awslogs

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 Go to latest Published: Aug 9, 2022 License: Apache-2.0 Imports: 9 Imported by: 18

README

Amazon CloudWatch Logs Construct Library

This library supplies constructs for working with CloudWatch Logs.

Log Groups/Streams

The basic unit of CloudWatch is a Log Group. Every log group typically has the same kind of data logged to it, in the same format. If there are multiple applications or services logging into the Log Group, each of them creates a new Log Stream.

Every log operation creates a "log event", which can consist of a simple string or a single-line JSON object. JSON objects have the advantage that they afford more filtering abilities (see below).

The only configurable attribute for log streams is the retention period, which configures after how much time the events in the log stream expire and are deleted.

The default retention period if not supplied is 2 years, but it can be set to one of the values in the RetentionDays enum to configure a different retention period (including infinite retention).

// Configure log group for short retention
logGroup := awscdk.NewLogGroup(stack, jsii.String("LogGroup"), &logGroupProps{
	retention: awscdk.RetentionDays_ONE_WEEK,
})// Configure log group for infinite retention
logGroup := awscdk.NewLogGroup(stack, jsii.String("LogGroup"), &logGroupProps{
	retention: infinity,
})

LogRetention

The LogRetention construct is a way to control the retention period of log groups that are created outside of the CDK. The construct is usually used on log groups that are auto created by AWS services, such as AWS lambda.

This is implemented using a CloudFormation custom resource which pre-creates the log group if it doesn't exist, and sets the specified log retention period (never expire, by default).

By default, the log group will be created in the same region as the stack. The logGroupRegion property can be used to configure log groups in other regions. This is typically useful when controlling retention for log groups auto-created by global services that publish their log group to a specific region, such as AWS Chatbot creating a log group in us-east-1.

Resource Policy

CloudWatch Resource Policies allow other AWS services or IAM Principals to put log events into the log groups. A resource policy is automatically created when addToResourcePolicy is called on the LogGroup for the first time:

logGroup := logs.NewLogGroup(this, jsii.String("LogGroup"))
logGroup.addToResourcePolicy(iam.NewPolicyStatement(&policyStatementProps{
	actions: []*string{
		jsii.String("logs:CreateLogStream"),
		jsii.String("logs:PutLogEvents"),
	},
	principals: []iPrincipal{
		iam.NewServicePrincipal(jsii.String("es.amazonaws.com")),
	},
	resources: []*string{
		logGroup.logGroupArn,
	},
}))

Or more conveniently, write permissions to the log group can be granted as follows which gives same result as in the above example.

logGroup := logs.NewLogGroup(this, jsii.String("LogGroup"))
logGroup.grantWrite(iam.NewServicePrincipal(jsii.String("es.amazonaws.com")))

Be aware that any ARNs or tokenized values passed to the resource policy will be converted into AWS Account IDs. This is because CloudWatch Logs Resource Policies do not accept ARNs as principals, but they do accept Account ID strings. Non-ARN principals, like Service principals or Any princpals, are accepted by CloudWatch.

Encrypting Log Groups

By default, log group data is always encrypted in CloudWatch Logs. You have the option to encrypt log group data using a AWS KMS customer master key (CMK) should you not wish to use the default AWS encryption. Keep in mind that if you decide to encrypt a log group, any service or IAM identity that needs to read the encrypted log streams in the future will require the same CMK to decrypt the data.

Here's a simple example of creating an encrypted Log Group using a KMS CMK.

import kms "github.com/aws/aws-cdk-go/awscdk"


logs.NewLogGroup(this, jsii.String("LogGroup"), &logGroupProps{
	encryptionKey: kms.NewKey(this, jsii.String("Key")),
})

See the AWS documentation for more detailed information about encrypting CloudWatch Logs.

Subscriptions and Destinations

Log events matching a particular filter can be sent to either a Lambda function or a Kinesis stream.

If the Kinesis stream lives in a different account, a CrossAccountDestination object needs to be added in the destination account which will act as a proxy for the remote Kinesis stream. This object is automatically created for you if you use the CDK Kinesis library.

Create a SubscriptionFilter, initialize it with an appropriate Pattern (see below) and supply the intended destination:

import destinations "github.com/aws/aws-cdk-go/awscdk"
var fn function
var logGroup logGroup


logs.NewSubscriptionFilter(this, jsii.String("Subscription"), &subscriptionFilterProps{
	logGroup: logGroup,
	destination: destinations.NewLambdaDestination(fn),
	filterPattern: logs.filterPattern.allTerms(jsii.String("ERROR"), jsii.String("MainThread")),
})

Metric Filters

CloudWatch Logs can extract and emit metrics based on a textual log stream. Depending on your needs, this may be a more convenient way of generating metrics for you application than making calls to CloudWatch Metrics yourself.

A MetricFilter either emits a fixed number every time it sees a log event matching a particular pattern (see below), or extracts a number from the log event and uses that as the metric value.

Example:

awscdk.NewMetricFilter(this, jsii.String("MetricFilter"), &metricFilterProps{
	logGroup: logGroup,
	metricNamespace: jsii.String("MyApp"),
	metricName: jsii.String("Latency"),
	filterPattern: awscdk.FilterPattern.exists(jsii.String("$.latency")),
	metricValue: jsii.String("$.latency"),
})

Remember that if you want to use a value from the log event as the metric value, you must mention it in your pattern somewhere.

A very simple MetricFilter can be created by using the logGroup.extractMetric() helper function:

var logGroup logGroup

logGroup.extractMetric(jsii.String("$.jsonField"), jsii.String("Namespace"), jsii.String("MetricName"))

Will extract the value of jsonField wherever it occurs in JSON-structed log records in the LogGroup, and emit them to CloudWatch Metrics under the name Namespace/MetricName.

Exposing Metric on a Metric Filter

You can expose a metric on a metric filter by calling the MetricFilter.metric() API. This has a default of statistic = 'avg' if the statistic is not set in the props.

var logGroup logGroup

mf := logs.NewMetricFilter(this, jsii.String("MetricFilter"), &metricFilterProps{
	logGroup: logGroup,
	metricNamespace: jsii.String("MyApp"),
	metricName: jsii.String("Latency"),
	filterPattern: logs.filterPattern.exists(jsii.String("$.latency")),
	metricValue: jsii.String("$.latency"),
})

//expose a metric from the metric filter
metric := mf.metric()

//you can use the metric to create a new alarm
//you can use the metric to create a new alarm
cloudwatch.NewAlarm(this, jsii.String("alarm from metric filter"), &alarmProps{
	metric: metric,
	threshold: jsii.Number(100),
	evaluationPeriods: jsii.Number(2),
})

Patterns

Patterns describe which log events match a subscription or metric filter. There are three types of patterns:

  • Text patterns
  • JSON patterns
  • Space-delimited table patterns

All patterns are constructed by using static functions on the FilterPattern class.

In addition to the patterns above, the following special patterns exist:

  • FilterPattern.allEvents(): matches all log events.
  • FilterPattern.literal(string): if you already know what pattern expression to use, this function takes a string and will use that as the log pattern. For more information, see the Filter and Pattern Syntax.
Text Patterns

Text patterns match if the literal strings appear in the text form of the log line.

  • FilterPattern.allTerms(term, term, ...): matches if all of the given terms (substrings) appear in the log event.
  • FilterPattern.anyTerm(term, term, ...): matches if all of the given terms (substrings) appear in the log event.
  • FilterPattern.anyTermGroup([term, term, ...], [term, term, ...], ...): matches if all of the terms in any of the groups (specified as arrays) matches. This is an OR match.

Examples:

// Search for lines that contain both "ERROR" and "MainThread"
pattern1 := logs.filterPattern.allTerms(jsii.String("ERROR"), jsii.String("MainThread"))

// Search for lines that either contain both "ERROR" and "MainThread", or
// both "WARN" and "Deadlock".
pattern2 := logs.filterPattern.anyTermGroup([]*string{
	jsii.String("ERROR"),
	jsii.String("MainThread"),
}, []*string{
	jsii.String("WARN"),
	jsii.String("Deadlock"),
})

JSON Patterns

JSON patterns apply if the log event is the JSON representation of an object (without any other characters, so it cannot include a prefix such as timestamp or log level). JSON patterns can make comparisons on the values inside the fields.

  • Strings: the comparison operators allowed for strings are = and !=. String values can start or end with a * wildcard.
  • Numbers: the comparison operators allowed for numbers are =, !=, <, <=, >, >=.

Fields in the JSON structure are identified by identifier the complete object as $ and then descending into it, such as $.field or $.list[0].field.

  • FilterPattern.stringValue(field, comparison, string): matches if the given field compares as indicated with the given string value.
  • FilterPattern.numberValue(field, comparison, number): matches if the given field compares as indicated with the given numerical value.
  • FilterPattern.isNull(field): matches if the given field exists and has the value null.
  • FilterPattern.notExists(field): matches if the given field is not in the JSON structure.
  • FilterPattern.exists(field): matches if the given field is in the JSON structure.
  • FilterPattern.booleanValue(field, boolean): matches if the given field is exactly the given boolean value.
  • FilterPattern.all(jsonPattern, jsonPattern, ...): matches if all of the given JSON patterns match. This makes an AND combination of the given patterns.
  • FilterPattern.any(jsonPattern, jsonPattern, ...): matches if any of the given JSON patterns match. This makes an OR combination of the given patterns.

Example:

// Search for all events where the component field is equal to
// "HttpServer" and either error is true or the latency is higher
// than 1000.
pattern := logs.filterPattern.all(logs.filterPattern.stringValue(jsii.String("$.component"), jsii.String("="), jsii.String("HttpServer")), logs.filterPattern.any(logs.filterPattern.booleanValue(jsii.String("$.error"), jsii.Boolean(true)), logs.filterPattern.numberValue(jsii.String("$.latency"), jsii.String(">"), jsii.Number(1000))))

Space-delimited table patterns

If the log events are rows of a space-delimited table, this pattern can be used to identify the columns in that structure and add conditions on any of them. The canonical example where you would apply this type of pattern is Apache server logs.

Text that is surrounded by "..." quotes or [...] square brackets will be treated as one column.

  • FilterPattern.spaceDelimited(column, column, ...): construct a SpaceDelimitedTextPattern object with the indicated columns. The columns map one-by-one the columns found in the log event. The string "..." may be used to specify an arbitrary number of unnamed columns anywhere in the name list (but may only be specified once).

After constructing a SpaceDelimitedTextPattern, you can use the following two members to add restrictions:

  • pattern.whereString(field, comparison, string): add a string condition. The rules are the same as for JSON patterns.
  • pattern.whereNumber(field, comparison, number): add a numerical condition. The rules are the same as for JSON patterns.

Multiple restrictions can be added on the same column; they must all apply.

Example:

// Search for all events where the component is "HttpServer" and the
// result code is not equal to 200.
pattern := logs.filterPattern.spaceDelimited(jsii.String("time"), jsii.String("component"), jsii.String("..."), jsii.String("result_code"), jsii.String("latency")).whereString(jsii.String("component"), jsii.String("="), jsii.String("HttpServer")).whereNumber(jsii.String("result_code"), jsii.String("!="), jsii.Number(200))

Logs Insights Query Definition

Creates a query definition for CloudWatch Logs Insights.

Example:

logs.NewQueryDefinition(this, jsii.String("QueryDefinition"), &queryDefinitionProps{
	queryDefinitionName: jsii.String("MyQuery"),
	queryString: logs.NewQueryString(&queryStringProps{
		fields: []*string{
			jsii.String("@timestamp"),
			jsii.String("@message"),
		},
		sort: jsii.String("@timestamp desc"),
		limit: jsii.Number(20),
	}),
})

Notes

Be aware that Log Group ARNs will always have the string :* appended to them, to match the behavior of the CloudFormation AWS::Logs::LogGroup resource.

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CfnDestination_CFN_RESOURCE_TYPE_NAME 

func CfnDestination_CFN_RESOURCE_TYPE_NAME() *string

func CfnDestination_IsCfnElement 

func CfnDestination_IsCfnElement(x interface{}) *bool

Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of `instanceof` to allow stack elements from different versions of this library to be included in the same stack.

Returns: The construct as a stack element or undefined if it is not a stack element. Experimental.

func CfnDestination_IsCfnResource 

func CfnDestination_IsCfnResource(construct constructs.IConstruct) *bool

Check whether the given construct is a CfnResource. Experimental.

func CfnDestination_IsConstruct 

func CfnDestination_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func CfnLogGroup_CFN_RESOURCE_TYPE_NAME 

func CfnLogGroup_CFN_RESOURCE_TYPE_NAME() *string

func CfnLogGroup_IsCfnElement 

func CfnLogGroup_IsCfnElement(x interface{}) *bool

Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of `instanceof` to allow stack elements from different versions of this library to be included in the same stack.

Returns: The construct as a stack element or undefined if it is not a stack element. Experimental.

func CfnLogGroup_IsCfnResource 

func CfnLogGroup_IsCfnResource(construct constructs.IConstruct) *bool

Check whether the given construct is a CfnResource. Experimental.

func CfnLogGroup_IsConstruct 

func CfnLogGroup_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func CfnLogStream_CFN_RESOURCE_TYPE_NAME 

func CfnLogStream_CFN_RESOURCE_TYPE_NAME() *string

func CfnLogStream_IsCfnElement 

func CfnLogStream_IsCfnElement(x interface{}) *bool

Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of `instanceof` to allow stack elements from different versions of this library to be included in the same stack.

Returns: The construct as a stack element or undefined if it is not a stack element. Experimental.

func CfnLogStream_IsCfnResource 

func CfnLogStream_IsCfnResource(construct constructs.IConstruct) *bool

Check whether the given construct is a CfnResource. Experimental.

func CfnLogStream_IsConstruct 

func CfnLogStream_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func CfnMetricFilter_CFN_RESOURCE_TYPE_NAME 

func CfnMetricFilter_CFN_RESOURCE_TYPE_NAME() *string

func CfnMetricFilter_IsCfnElement 

func CfnMetricFilter_IsCfnElement(x interface{}) *bool

Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of `instanceof` to allow stack elements from different versions of this library to be included in the same stack.

Returns: The construct as a stack element or undefined if it is not a stack element. Experimental.

func CfnMetricFilter_IsCfnResource 

func CfnMetricFilter_IsCfnResource(construct constructs.IConstruct) *bool

Check whether the given construct is a CfnResource. Experimental.

func CfnMetricFilter_IsConstruct 

func CfnMetricFilter_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func CfnQueryDefinition_CFN_RESOURCE_TYPE_NAME 

func CfnQueryDefinition_CFN_RESOURCE_TYPE_NAME() *string

func CfnQueryDefinition_IsCfnElement 

func CfnQueryDefinition_IsCfnElement(x interface{}) *bool

Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of `instanceof` to allow stack elements from different versions of this library to be included in the same stack.

Returns: The construct as a stack element or undefined if it is not a stack element. Experimental.

func CfnQueryDefinition_IsCfnResource 

func CfnQueryDefinition_IsCfnResource(construct constructs.IConstruct) *bool

Check whether the given construct is a CfnResource. Experimental.

func CfnQueryDefinition_IsConstruct 

func CfnQueryDefinition_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func CfnResourcePolicy_CFN_RESOURCE_TYPE_NAME 

func CfnResourcePolicy_CFN_RESOURCE_TYPE_NAME() *string

func CfnResourcePolicy_IsCfnElement 

func CfnResourcePolicy_IsCfnElement(x interface{}) *bool

Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of `instanceof` to allow stack elements from different versions of this library to be included in the same stack.

Returns: The construct as a stack element or undefined if it is not a stack element. Experimental.

func CfnResourcePolicy_IsCfnResource 

func CfnResourcePolicy_IsCfnResource(construct constructs.IConstruct) *bool

Check whether the given construct is a CfnResource. Experimental.

func CfnResourcePolicy_IsConstruct 

func CfnResourcePolicy_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func CfnSubscriptionFilter_CFN_RESOURCE_TYPE_NAME 

func CfnSubscriptionFilter_CFN_RESOURCE_TYPE_NAME() *string

func CfnSubscriptionFilter_IsCfnElement 

func CfnSubscriptionFilter_IsCfnElement(x interface{}) *bool

Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of `instanceof` to allow stack elements from different versions of this library to be included in the same stack.

Returns: The construct as a stack element or undefined if it is not a stack element. Experimental.

func CfnSubscriptionFilter_IsCfnResource 

func CfnSubscriptionFilter_IsCfnResource(construct constructs.IConstruct) *bool

Check whether the given construct is a CfnResource. Experimental.

func CfnSubscriptionFilter_IsConstruct 

func CfnSubscriptionFilter_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func CrossAccountDestination_IsConstruct 

func CrossAccountDestination_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func CrossAccountDestination_IsResource 

func CrossAccountDestination_IsResource(construct awscdk.IConstruct) *bool

Check whether the given construct is a Resource. Experimental.

func LogGroup_IsConstruct 

func LogGroup_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func LogGroup_IsResource 

func LogGroup_IsResource(construct awscdk.IConstruct) *bool

Check whether the given construct is a Resource. Experimental.

func LogRetention_IsConstruct 

func LogRetention_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func LogStream_IsConstruct 

func LogStream_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func LogStream_IsResource 

func LogStream_IsResource(construct awscdk.IConstruct) *bool

Check whether the given construct is a Resource. Experimental.

func MetricFilter_IsConstruct 

func MetricFilter_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func MetricFilter_IsResource 

func MetricFilter_IsResource(construct awscdk.IConstruct) *bool

Check whether the given construct is a Resource. Experimental.

func NewCfnDestination_Override 

func NewCfnDestination_Override(c CfnDestination, scope awscdk.Construct, id *string, props *CfnDestinationProps)

Create a new `AWS::Logs::Destination`.

func NewCfnLogGroup_Override 

func NewCfnLogGroup_Override(c CfnLogGroup, scope awscdk.Construct, id *string, props *CfnLogGroupProps)

Create a new `AWS::Logs::LogGroup`.

func NewCfnLogStream_Override 

func NewCfnLogStream_Override(c CfnLogStream, scope awscdk.Construct, id *string, props *CfnLogStreamProps)

Create a new `AWS::Logs::LogStream`.

func NewCfnMetricFilter_Override 

func NewCfnMetricFilter_Override(c CfnMetricFilter, scope awscdk.Construct, id *string, props *CfnMetricFilterProps)

Create a new `AWS::Logs::MetricFilter`.

func NewCfnQueryDefinition_Override 

func NewCfnQueryDefinition_Override(c CfnQueryDefinition, scope awscdk.Construct, id *string, props *CfnQueryDefinitionProps)

Create a new `AWS::Logs::QueryDefinition`.

func NewCfnResourcePolicy_Override 

func NewCfnResourcePolicy_Override(c CfnResourcePolicy, scope awscdk.Construct, id *string, props *CfnResourcePolicyProps)

Create a new `AWS::Logs::ResourcePolicy`.

func NewCfnSubscriptionFilter_Override 

func NewCfnSubscriptionFilter_Override(c CfnSubscriptionFilter, scope awscdk.Construct, id *string, props *CfnSubscriptionFilterProps)

Create a new `AWS::Logs::SubscriptionFilter`.

func NewCrossAccountDestination_Override 

func NewCrossAccountDestination_Override(c CrossAccountDestination, scope constructs.Construct, id *string, props *CrossAccountDestinationProps)

Experimental.

func NewFilterPattern_Override 

func NewFilterPattern_Override(f FilterPattern)

Experimental.

func NewJsonPattern_Override 

func NewJsonPattern_Override(j JsonPattern, jsonPatternString *string)

Experimental.

func NewLogGroup_Override 

func NewLogGroup_Override(l LogGroup, scope constructs.Construct, id *string, props *LogGroupProps)

Experimental.

func NewLogRetention_Override 

func NewLogRetention_Override(l LogRetention, scope constructs.Construct, id *string, props *LogRetentionProps)

Experimental.

func NewLogStream_Override 

func NewLogStream_Override(l LogStream, scope constructs.Construct, id *string, props *LogStreamProps)

Experimental.

func NewMetricFilter_Override 

func NewMetricFilter_Override(m MetricFilter, scope constructs.Construct, id *string, props *MetricFilterProps)

Experimental.

func NewQueryDefinition_Override 

func NewQueryDefinition_Override(q QueryDefinition, scope constructs.Construct, id *string, props *QueryDefinitionProps)

Experimental.

func NewQueryString_Override 

func NewQueryString_Override(q QueryString, props *QueryStringProps)

Experimental.

func NewResourcePolicy_Override 

func NewResourcePolicy_Override(r ResourcePolicy, scope constructs.Construct, id *string, props *ResourcePolicyProps)

Experimental.

func NewSpaceDelimitedTextPattern_Override 

func NewSpaceDelimitedTextPattern_Override(s SpaceDelimitedTextPattern, columns *[]*string, restrictions *map[string]*[]*ColumnRestriction)

Experimental.

func NewSubscriptionFilter_Override 

func NewSubscriptionFilter_Override(s SubscriptionFilter, scope constructs.Construct, id *string, props *SubscriptionFilterProps)

Experimental.

func QueryDefinition_IsConstruct 

func QueryDefinition_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func QueryDefinition_IsResource 

func QueryDefinition_IsResource(construct awscdk.IConstruct) *bool

Check whether the given construct is a Resource. Experimental.

func ResourcePolicy_IsConstruct 

func ResourcePolicy_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func ResourcePolicy_IsResource 

func ResourcePolicy_IsResource(construct awscdk.IConstruct) *bool

Check whether the given construct is a Resource. Experimental.

func SubscriptionFilter_IsConstruct 

func SubscriptionFilter_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func SubscriptionFilter_IsResource 

func SubscriptionFilter_IsResource(construct awscdk.IConstruct) *bool

Check whether the given construct is a Resource. Experimental.

Types

type CfnDestination 

type CfnDestination interface {
	awscdk.CfnResource
	awscdk.IInspectable
	// The ARN of the CloudWatch Logs destination, such as `arn:aws:logs:us-west-1:123456789012:destination:MyDestination` .
	AttrArn() *string
	// Options for this resource, such as condition, update policy etc.
	// Experimental.
	CfnOptions() awscdk.ICfnResourceOptions
	CfnProperties() *map[string]interface{}
	// AWS resource type.
	// Experimental.
	CfnResourceType() *string
	// Returns: the stack trace of the point where this Resource was created from, sourced
	// from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most
	// node +internal+ entries filtered.
	// Experimental.
	CreationStack() *[]*string
	// The name of the destination.
	DestinationName() *string
	SetDestinationName(val *string)
	// An IAM policy document that governs which AWS accounts can create subscription filters against this destination.
	DestinationPolicy() *string
	SetDestinationPolicy(val *string)
	// The logical ID for this CloudFormation stack element.
	//
	// The logical ID of the element
	// is calculated from the path of the resource node in the construct tree.
	//
	// To override this value, use `overrideLogicalId(newLogicalId)`.
	//
	// Returns: the logical ID as a stringified token. This value will only get
	// resolved during synthesis.
	// Experimental.
	LogicalId() *string
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
	//
	// If, by any chance, the intrinsic reference of a resource is not a string, you could
	// coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.
	// Experimental.
	Ref() *string
	// The ARN of an IAM role that permits CloudWatch Logs to send data to the specified AWS resource.
	RoleArn() *string
	SetRoleArn(val *string)
	// The stack in which this element is defined.
	//
	// CfnElements must be defined within a stack scope (directly or indirectly).
	// Experimental.
	Stack() awscdk.Stack
	// The Amazon Resource Name (ARN) of the physical target where the log events are delivered (for example, a Kinesis stream).
	TargetArn() *string
	SetTargetArn(val *string)
	// Return properties modified after initiation.
	//
	// Resources that expose mutable properties should override this function to
	// collect and return the properties object for this resource.
	// Experimental.
	UpdatedProperites() *map[string]interface{}
	// Syntactic sugar for `addOverride(path, undefined)`.
	// Experimental.
	AddDeletionOverride(path *string)
	// Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
	//
	// This can be used for resources across stacks (or nested stack) boundaries
	// and the dependency will automatically be transferred to the relevant scope.
	// Experimental.
	AddDependsOn(target awscdk.CfnResource)
	// Add a value to the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	AddMetadata(key *string, value interface{})
	// Adds an override to the synthesized CloudFormation resource.
	//
	// To add a
	// property override, either use `addPropertyOverride` or prefix `path` with
	// "Properties." (i.e. `Properties.TopicName`).
	//
	// If the override is nested, separate each nested level using a dot (.) in the path parameter.
	// If there is an array as part of the nesting, specify the index in the path.
	//
	// To include a literal `.` in the property name, prefix with a `\`. In most
	// programming languages you will need to write this as `"\\."` because the
	// `\` itself will need to be escaped.
	//
	// For example,
	// “`typescript
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
	// “`
	// would add the overrides
	// “`json
	// "Properties": {
	//    "GlobalSecondaryIndexes": [
	//      {
	//        "Projection": {
	//          "NonKeyAttributes": [ "myattribute" ]
	//          ...
	//        }
	//        ...
	//      },
	//      {
	//        "ProjectionType": "INCLUDE"
	//        ...
	//      },
	//    ]
	//    ...
	// }
	// “`
	//
	// The `value` argument to `addOverride` will not be processed or translated
	// in any way. Pass raw JSON values in here with the correct capitalization
	// for CloudFormation. If you pass CDK classes or structs, they will be
	// rendered with lowercased key names, and CloudFormation will reject the
	// template.
	// Experimental.
	AddOverride(path *string, value interface{})
	// Adds an override that deletes the value of a property from the resource definition.
	// Experimental.
	AddPropertyDeletionOverride(propertyPath *string)
	// Adds an override to a resource property.
	//
	// Syntactic sugar for `addOverride("Properties.<...>", value)`.
	// Experimental.
	AddPropertyOverride(propertyPath *string, value interface{})
	// Sets the deletion policy of the resource based on the removal policy specified.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy, options *awscdk.RemovalPolicyOptions)
	// Returns a token for an runtime attribute of this resource.
	//
	// Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
	// in case there is no generated attribute.
	// Experimental.
	GetAtt(attributeName *string) awscdk.Reference
	// Retrieve a value value from the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	GetMetadata(key *string) interface{}
	// Examines the CloudFormation resource and discloses attributes.
	Inspect(inspector awscdk.TreeInspector)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Overrides the auto-generated logical ID with a specific ID.
	// Experimental.
	OverrideLogicalId(newLogicalId *string)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	RenderProperties(props *map[string]interface{}) *map[string]interface{}
	// Can be overridden by subclasses to determine if this resource will be rendered into the cloudformation template.
	//
	// Returns: `true` if the resource should be included or `false` is the resource
	// should be omitted.
	// Experimental.
	ShouldSynthesize() *bool
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	//
	// Returns: a string representation of this resource.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
	// Experimental.
	ValidateProperties(_properties interface{})
}

A CloudFormation `AWS::Logs::Destination`.

The AWS::Logs::Destination resource specifies a CloudWatch Logs destination. A destination encapsulates a physical resource (such as an Amazon Kinesis data stream) and enables you to subscribe that resource to a stream of log events.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnDestination := awscdk.Aws_logs.NewCfnDestination(this, jsii.String("MyCfnDestination"), &cfnDestinationProps{
	destinationName: jsii.String("destinationName"),
	destinationPolicy: jsii.String("destinationPolicy"),
	roleArn: jsii.String("roleArn"),
	targetArn: jsii.String("targetArn"),
})

func NewCfnDestination 

func NewCfnDestination(scope awscdk.Construct, id *string, props *CfnDestinationProps) CfnDestination

Create a new `AWS::Logs::Destination`.

type CfnDestinationProps 

type CfnDestinationProps struct {
	// The name of the destination.
	DestinationName *string `field:"required" json:"destinationName" yaml:"destinationName"`
	// An IAM policy document that governs which AWS accounts can create subscription filters against this destination.
	DestinationPolicy *string `field:"required" json:"destinationPolicy" yaml:"destinationPolicy"`
	// The ARN of an IAM role that permits CloudWatch Logs to send data to the specified AWS resource.
	RoleArn *string `field:"required" json:"roleArn" yaml:"roleArn"`
	// The Amazon Resource Name (ARN) of the physical target where the log events are delivered (for example, a Kinesis stream).
	TargetArn *string `field:"required" json:"targetArn" yaml:"targetArn"`
}

Properties for defining a `CfnDestination`.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnDestinationProps := &cfnDestinationProps{
	destinationName: jsii.String("destinationName"),
	destinationPolicy: jsii.String("destinationPolicy"),
	roleArn: jsii.String("roleArn"),
	targetArn: jsii.String("targetArn"),
}

type CfnLogGroup 

type CfnLogGroup interface {
	awscdk.CfnResource
	awscdk.IInspectable
	// The ARN of the log group, such as `arn:aws:logs:us-west-1:123456789012:log-group:/mystack-testgroup-12ABC1AB12A1:*`.
	AttrArn() *string
	// Options for this resource, such as condition, update policy etc.
	// Experimental.
	CfnOptions() awscdk.ICfnResourceOptions
	CfnProperties() *map[string]interface{}
	// AWS resource type.
	// Experimental.
	CfnResourceType() *string
	// Returns: the stack trace of the point where this Resource was created from, sourced
	// from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most
	// node +internal+ entries filtered.
	// Experimental.
	CreationStack() *[]*string
	// The Amazon Resource Name (ARN) of the AWS KMS key to use when encrypting log data.
	//
	// To associate an AWS KMS key with the log group, specify the ARN of that KMS key here. If you do so, ingested data is encrypted using this key. This association is stored as long as the data encrypted with the KMS key is still within CloudWatch Logs . This enables CloudWatch Logs to decrypt this data whenever it is requested.
	//
	// If you attempt to associate a KMS key with the log group but the KMS key doesn't exist or is deactivated, you will receive an `InvalidParameterException` error.
	//
	// Log group data is always encrypted in CloudWatch Logs . If you omit this key, the encryption does not use AWS KMS . For more information, see [Encrypt log data in CloudWatch Logs using AWS Key Management Service](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/encrypt-log-data-kms.html)
	KmsKeyId() *string
	SetKmsKeyId(val *string)
	// The name of the log group.
	//
	// If you don't specify a name, AWS CloudFormation generates a unique ID for the log group.
	LogGroupName() *string
	SetLogGroupName(val *string)
	// The logical ID for this CloudFormation stack element.
	//
	// The logical ID of the element
	// is calculated from the path of the resource node in the construct tree.
	//
	// To override this value, use `overrideLogicalId(newLogicalId)`.
	//
	// Returns: the logical ID as a stringified token. This value will only get
	// resolved during synthesis.
	// Experimental.
	LogicalId() *string
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
	//
	// If, by any chance, the intrinsic reference of a resource is not a string, you could
	// coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.
	// Experimental.
	Ref() *string
	// The number of days to retain the log events in the specified log group.
	//
	// Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 2192, 2557, 2922, 3288, and 3653.
	//
	// To set a log group to never have log events expire, use [DeleteRetentionPolicy](https://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/API_DeleteRetentionPolicy.html) .
	RetentionInDays() *float64
	SetRetentionInDays(val *float64)
	// The stack in which this element is defined.
	//
	// CfnElements must be defined within a stack scope (directly or indirectly).
	// Experimental.
	Stack() awscdk.Stack
	// An array of key-value pairs to apply to the log group.
	//
	// For more information, see [Tag](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-resource-tags.html) .
	Tags() awscdk.TagManager
	// Return properties modified after initiation.
	//
	// Resources that expose mutable properties should override this function to
	// collect and return the properties object for this resource.
	// Experimental.
	UpdatedProperites() *map[string]interface{}
	// Syntactic sugar for `addOverride(path, undefined)`.
	// Experimental.
	AddDeletionOverride(path *string)
	// Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
	//
	// This can be used for resources across stacks (or nested stack) boundaries
	// and the dependency will automatically be transferred to the relevant scope.
	// Experimental.
	AddDependsOn(target awscdk.CfnResource)
	// Add a value to the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	AddMetadata(key *string, value interface{})
	// Adds an override to the synthesized CloudFormation resource.
	//
	// To add a
	// property override, either use `addPropertyOverride` or prefix `path` with
	// "Properties." (i.e. `Properties.TopicName`).
	//
	// If the override is nested, separate each nested level using a dot (.) in the path parameter.
	// If there is an array as part of the nesting, specify the index in the path.
	//
	// To include a literal `.` in the property name, prefix with a `\`. In most
	// programming languages you will need to write this as `"\\."` because the
	// `\` itself will need to be escaped.
	//
	// For example,
	// “`typescript
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
	// “`
	// would add the overrides
	// “`json
	// "Properties": {
	//    "GlobalSecondaryIndexes": [
	//      {
	//        "Projection": {
	//          "NonKeyAttributes": [ "myattribute" ]
	//          ...
	//        }
	//        ...
	//      },
	//      {
	//        "ProjectionType": "INCLUDE"
	//        ...
	//      },
	//    ]
	//    ...
	// }
	// “`
	//
	// The `value` argument to `addOverride` will not be processed or translated
	// in any way. Pass raw JSON values in here with the correct capitalization
	// for CloudFormation. If you pass CDK classes or structs, they will be
	// rendered with lowercased key names, and CloudFormation will reject the
	// template.
	// Experimental.
	AddOverride(path *string, value interface{})
	// Adds an override that deletes the value of a property from the resource definition.
	// Experimental.
	AddPropertyDeletionOverride(propertyPath *string)
	// Adds an override to a resource property.
	//
	// Syntactic sugar for `addOverride("Properties.<...>", value)`.
	// Experimental.
	AddPropertyOverride(propertyPath *string, value interface{})
	// Sets the deletion policy of the resource based on the removal policy specified.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy, options *awscdk.RemovalPolicyOptions)
	// Returns a token for an runtime attribute of this resource.
	//
	// Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
	// in case there is no generated attribute.
	// Experimental.
	GetAtt(attributeName *string) awscdk.Reference
	// Retrieve a value value from the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	GetMetadata(key *string) interface{}
	// Examines the CloudFormation resource and discloses attributes.
	Inspect(inspector awscdk.TreeInspector)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Overrides the auto-generated logical ID with a specific ID.
	// Experimental.
	OverrideLogicalId(newLogicalId *string)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	RenderProperties(props *map[string]interface{}) *map[string]interface{}
	// Can be overridden by subclasses to determine if this resource will be rendered into the cloudformation template.
	//
	// Returns: `true` if the resource should be included or `false` is the resource
	// should be omitted.
	// Experimental.
	ShouldSynthesize() *bool
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	//
	// Returns: a string representation of this resource.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
	// Experimental.
	ValidateProperties(_properties interface{})
}

A CloudFormation `AWS::Logs::LogGroup`.

The `AWS::Logs::LogGroup` resource specifies a log group. A log group defines common properties for log streams, such as their retention and access control rules. Each log stream must belong to one log group.

You can create up to 1,000,000 log groups per Region per account. You must use the following guidelines when naming a log group:

- Log group names must be unique within a Region for an AWS account. - Log group names can be between 1 and 512 characters long. - Log group names consist of the following characters: a-z, A-Z, 0-9, '_' (underscore), '-' (hyphen), '/' (forward slash), and '.' (period).

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnLogGroup := awscdk.Aws_logs.NewCfnLogGroup(this, jsii.String("MyCfnLogGroup"), &cfnLogGroupProps{
	kmsKeyId: jsii.String("kmsKeyId"),
	logGroupName: jsii.String("logGroupName"),
	retentionInDays: jsii.Number(123),
	tags: []cfnTag{
		&cfnTag{
			key: jsii.String("key"),
			value: jsii.String("value"),
		},
	},
})

func NewCfnLogGroup 

func NewCfnLogGroup(scope awscdk.Construct, id *string, props *CfnLogGroupProps) CfnLogGroup

Create a new `AWS::Logs::LogGroup`.

type CfnLogGroupProps 

type CfnLogGroupProps struct {
	// The Amazon Resource Name (ARN) of the AWS KMS key to use when encrypting log data.
	//
	// To associate an AWS KMS key with the log group, specify the ARN of that KMS key here. If you do so, ingested data is encrypted using this key. This association is stored as long as the data encrypted with the KMS key is still within CloudWatch Logs . This enables CloudWatch Logs to decrypt this data whenever it is requested.
	//
	// If you attempt to associate a KMS key with the log group but the KMS key doesn't exist or is deactivated, you will receive an `InvalidParameterException` error.
	//
	// Log group data is always encrypted in CloudWatch Logs . If you omit this key, the encryption does not use AWS KMS . For more information, see [Encrypt log data in CloudWatch Logs using AWS Key Management Service](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/encrypt-log-data-kms.html)
	KmsKeyId *string `field:"optional" json:"kmsKeyId" yaml:"kmsKeyId"`
	// The name of the log group.
	//
	// If you don't specify a name, AWS CloudFormation generates a unique ID for the log group.
	LogGroupName *string `field:"optional" json:"logGroupName" yaml:"logGroupName"`
	// The number of days to retain the log events in the specified log group.
	//
	// Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 2192, 2557, 2922, 3288, and 3653.
	//
	// To set a log group to never have log events expire, use [DeleteRetentionPolicy](https://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/API_DeleteRetentionPolicy.html) .
	RetentionInDays *float64 `field:"optional" json:"retentionInDays" yaml:"retentionInDays"`
	// An array of key-value pairs to apply to the log group.
	//
	// For more information, see [Tag](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-resource-tags.html) .
	Tags *[]*awscdk.CfnTag `field:"optional" json:"tags" yaml:"tags"`
}

Properties for defining a `CfnLogGroup`.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnLogGroupProps := &cfnLogGroupProps{
	kmsKeyId: jsii.String("kmsKeyId"),
	logGroupName: jsii.String("logGroupName"),
	retentionInDays: jsii.Number(123),
	tags: []cfnTag{
		&cfnTag{
			key: jsii.String("key"),
			value: jsii.String("value"),
		},
	},
}

type CfnLogStream 

type CfnLogStream interface {
	awscdk.CfnResource
	awscdk.IInspectable
	// Options for this resource, such as condition, update policy etc.
	// Experimental.
	CfnOptions() awscdk.ICfnResourceOptions
	CfnProperties() *map[string]interface{}
	// AWS resource type.
	// Experimental.
	CfnResourceType() *string
	// Returns: the stack trace of the point where this Resource was created from, sourced
	// from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most
	// node +internal+ entries filtered.
	// Experimental.
	CreationStack() *[]*string
	// The name of the log group where the log stream is created.
	LogGroupName() *string
	SetLogGroupName(val *string)
	// The logical ID for this CloudFormation stack element.
	//
	// The logical ID of the element
	// is calculated from the path of the resource node in the construct tree.
	//
	// To override this value, use `overrideLogicalId(newLogicalId)`.
	//
	// Returns: the logical ID as a stringified token. This value will only get
	// resolved during synthesis.
	// Experimental.
	LogicalId() *string
	// The name of the log stream.
	//
	// The name must be unique within the log group.
	LogStreamName() *string
	SetLogStreamName(val *string)
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
	//
	// If, by any chance, the intrinsic reference of a resource is not a string, you could
	// coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.
	// Experimental.
	Ref() *string
	// The stack in which this element is defined.
	//
	// CfnElements must be defined within a stack scope (directly or indirectly).
	// Experimental.
	Stack() awscdk.Stack
	// Return properties modified after initiation.
	//
	// Resources that expose mutable properties should override this function to
	// collect and return the properties object for this resource.
	// Experimental.
	UpdatedProperites() *map[string]interface{}
	// Syntactic sugar for `addOverride(path, undefined)`.
	// Experimental.
	AddDeletionOverride(path *string)
	// Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
	//
	// This can be used for resources across stacks (or nested stack) boundaries
	// and the dependency will automatically be transferred to the relevant scope.
	// Experimental.
	AddDependsOn(target awscdk.CfnResource)
	// Add a value to the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	AddMetadata(key *string, value interface{})
	// Adds an override to the synthesized CloudFormation resource.
	//
	// To add a
	// property override, either use `addPropertyOverride` or prefix `path` with
	// "Properties." (i.e. `Properties.TopicName`).
	//
	// If the override is nested, separate each nested level using a dot (.) in the path parameter.
	// If there is an array as part of the nesting, specify the index in the path.
	//
	// To include a literal `.` in the property name, prefix with a `\`. In most
	// programming languages you will need to write this as `"\\."` because the
	// `\` itself will need to be escaped.
	//
	// For example,
	// “`typescript
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
	// “`
	// would add the overrides
	// “`json
	// "Properties": {
	//    "GlobalSecondaryIndexes": [
	//      {
	//        "Projection": {
	//          "NonKeyAttributes": [ "myattribute" ]
	//          ...
	//        }
	//        ...
	//      },
	//      {
	//        "ProjectionType": "INCLUDE"
	//        ...
	//      },
	//    ]
	//    ...
	// }
	// “`
	//
	// The `value` argument to `addOverride` will not be processed or translated
	// in any way. Pass raw JSON values in here with the correct capitalization
	// for CloudFormation. If you pass CDK classes or structs, they will be
	// rendered with lowercased key names, and CloudFormation will reject the
	// template.
	// Experimental.
	AddOverride(path *string, value interface{})
	// Adds an override that deletes the value of a property from the resource definition.
	// Experimental.
	AddPropertyDeletionOverride(propertyPath *string)
	// Adds an override to a resource property.
	//
	// Syntactic sugar for `addOverride("Properties.<...>", value)`.
	// Experimental.
	AddPropertyOverride(propertyPath *string, value interface{})
	// Sets the deletion policy of the resource based on the removal policy specified.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy, options *awscdk.RemovalPolicyOptions)
	// Returns a token for an runtime attribute of this resource.
	//
	// Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
	// in case there is no generated attribute.
	// Experimental.
	GetAtt(attributeName *string) awscdk.Reference
	// Retrieve a value value from the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	GetMetadata(key *string) interface{}
	// Examines the CloudFormation resource and discloses attributes.
	Inspect(inspector awscdk.TreeInspector)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Overrides the auto-generated logical ID with a specific ID.
	// Experimental.
	OverrideLogicalId(newLogicalId *string)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	RenderProperties(props *map[string]interface{}) *map[string]interface{}
	// Can be overridden by subclasses to determine if this resource will be rendered into the cloudformation template.
	//
	// Returns: `true` if the resource should be included or `false` is the resource
	// should be omitted.
	// Experimental.
	ShouldSynthesize() *bool
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	//
	// Returns: a string representation of this resource.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
	// Experimental.
	ValidateProperties(_properties interface{})
}

A CloudFormation `AWS::Logs::LogStream`.

The `AWS::Logs::LogStream` resource specifies an Amazon CloudWatch Logs log stream in a specific log group. A log stream represents the sequence of events coming from an application instance or resource that you are monitoring.

There is no limit on the number of log streams that you can create for a log group.

You must use the following guidelines when naming a log stream:

- Log stream names must be unique within the log group. - Log stream names can be between 1 and 512 characters long. - The ':' (colon) and '*' (asterisk) characters are not allowed.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnLogStream := awscdk.Aws_logs.NewCfnLogStream(this, jsii.String("MyCfnLogStream"), &cfnLogStreamProps{
	logGroupName: jsii.String("logGroupName"),

	// the properties below are optional
	logStreamName: jsii.String("logStreamName"),
})

func NewCfnLogStream 

func NewCfnLogStream(scope awscdk.Construct, id *string, props *CfnLogStreamProps) CfnLogStream

Create a new `AWS::Logs::LogStream`.

type CfnLogStreamProps 

type CfnLogStreamProps struct {
	// The name of the log group where the log stream is created.
	LogGroupName *string `field:"required" json:"logGroupName" yaml:"logGroupName"`
	// The name of the log stream.
	//
	// The name must be unique within the log group.
	LogStreamName *string `field:"optional" json:"logStreamName" yaml:"logStreamName"`
}

Properties for defining a `CfnLogStream`.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnLogStreamProps := &cfnLogStreamProps{
	logGroupName: jsii.String("logGroupName"),

	// the properties below are optional
	logStreamName: jsii.String("logStreamName"),
}

type CfnMetricFilter 

type CfnMetricFilter interface {
	awscdk.CfnResource
	awscdk.IInspectable
	// Options for this resource, such as condition, update policy etc.
	// Experimental.
	CfnOptions() awscdk.ICfnResourceOptions
	CfnProperties() *map[string]interface{}
	// AWS resource type.
	// Experimental.
	CfnResourceType() *string
	// Returns: the stack trace of the point where this Resource was created from, sourced
	// from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most
	// node +internal+ entries filtered.
	// Experimental.
	CreationStack() *[]*string
	// `AWS::Logs::MetricFilter.FilterName`.
	FilterName() *string
	SetFilterName(val *string)
	// A filter pattern for extracting metric data out of ingested log events.
	//
	// For more information, see [Filter and Pattern Syntax](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html) .
	FilterPattern() *string
	SetFilterPattern(val *string)
	// The name of an existing log group that you want to associate with this metric filter.
	LogGroupName() *string
	SetLogGroupName(val *string)
	// The logical ID for this CloudFormation stack element.
	//
	// The logical ID of the element
	// is calculated from the path of the resource node in the construct tree.
	//
	// To override this value, use `overrideLogicalId(newLogicalId)`.
	//
	// Returns: the logical ID as a stringified token. This value will only get
	// resolved during synthesis.
	// Experimental.
	LogicalId() *string
	// The metric transformations.
	MetricTransformations() interface{}
	SetMetricTransformations(val interface{})
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
	//
	// If, by any chance, the intrinsic reference of a resource is not a string, you could
	// coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.
	// Experimental.
	Ref() *string
	// The stack in which this element is defined.
	//
	// CfnElements must be defined within a stack scope (directly or indirectly).
	// Experimental.
	Stack() awscdk.Stack
	// Return properties modified after initiation.
	//
	// Resources that expose mutable properties should override this function to
	// collect and return the properties object for this resource.
	// Experimental.
	UpdatedProperites() *map[string]interface{}
	// Syntactic sugar for `addOverride(path, undefined)`.
	// Experimental.
	AddDeletionOverride(path *string)
	// Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
	//
	// This can be used for resources across stacks (or nested stack) boundaries
	// and the dependency will automatically be transferred to the relevant scope.
	// Experimental.
	AddDependsOn(target awscdk.CfnResource)
	// Add a value to the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	AddMetadata(key *string, value interface{})
	// Adds an override to the synthesized CloudFormation resource.
	//
	// To add a
	// property override, either use `addPropertyOverride` or prefix `path` with
	// "Properties." (i.e. `Properties.TopicName`).
	//
	// If the override is nested, separate each nested level using a dot (.) in the path parameter.
	// If there is an array as part of the nesting, specify the index in the path.
	//
	// To include a literal `.` in the property name, prefix with a `\`. In most
	// programming languages you will need to write this as `"\\."` because the
	// `\` itself will need to be escaped.
	//
	// For example,
	// “`typescript
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
	// “`
	// would add the overrides
	// “`json
	// "Properties": {
	//    "GlobalSecondaryIndexes": [
	//      {
	//        "Projection": {
	//          "NonKeyAttributes": [ "myattribute" ]
	//          ...
	//        }
	//        ...
	//      },
	//      {
	//        "ProjectionType": "INCLUDE"
	//        ...
	//      },
	//    ]
	//    ...
	// }
	// “`
	//
	// The `value` argument to `addOverride` will not be processed or translated
	// in any way. Pass raw JSON values in here with the correct capitalization
	// for CloudFormation. If you pass CDK classes or structs, they will be
	// rendered with lowercased key names, and CloudFormation will reject the
	// template.
	// Experimental.
	AddOverride(path *string, value interface{})
	// Adds an override that deletes the value of a property from the resource definition.
	// Experimental.
	AddPropertyDeletionOverride(propertyPath *string)
	// Adds an override to a resource property.
	//
	// Syntactic sugar for `addOverride("Properties.<...>", value)`.
	// Experimental.
	AddPropertyOverride(propertyPath *string, value interface{})
	// Sets the deletion policy of the resource based on the removal policy specified.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy, options *awscdk.RemovalPolicyOptions)
	// Returns a token for an runtime attribute of this resource.
	//
	// Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
	// in case there is no generated attribute.
	// Experimental.
	GetAtt(attributeName *string) awscdk.Reference
	// Retrieve a value value from the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	GetMetadata(key *string) interface{}
	// Examines the CloudFormation resource and discloses attributes.
	Inspect(inspector awscdk.TreeInspector)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Overrides the auto-generated logical ID with a specific ID.
	// Experimental.
	OverrideLogicalId(newLogicalId *string)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	RenderProperties(props *map[string]interface{}) *map[string]interface{}
	// Can be overridden by subclasses to determine if this resource will be rendered into the cloudformation template.
	//
	// Returns: `true` if the resource should be included or `false` is the resource
	// should be omitted.
	// Experimental.
	ShouldSynthesize() *bool
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	//
	// Returns: a string representation of this resource.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
	// Experimental.
	ValidateProperties(_properties interface{})
}

A CloudFormation `AWS::Logs::MetricFilter`.

The `AWS::Logs::MetricFilter` resource specifies a metric filter that describes how CloudWatch Logs extracts information from logs and transforms it into Amazon CloudWatch metrics. If you have multiple metric filters that are associated with a log group, all the filters are applied to the log streams in that group.

The maximum number of metric filters that can be associated with a log group is 100.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnMetricFilter := awscdk.Aws_logs.NewCfnMetricFilter(this, jsii.String("MyCfnMetricFilter"), &cfnMetricFilterProps{
	filterPattern: jsii.String("filterPattern"),
	logGroupName: jsii.String("logGroupName"),
	metricTransformations: []interface{}{
		&metricTransformationProperty{
			metricName: jsii.String("metricName"),
			metricNamespace: jsii.String("metricNamespace"),
			metricValue: jsii.String("metricValue"),

			// the properties below are optional
			defaultValue: jsii.Number(123),
			dimensions: []interface{}{
				&dimensionProperty{
					key: jsii.String("key"),
					value: jsii.String("value"),
				},
			},
			unit: jsii.String("unit"),
		},
	},

	// the properties below are optional
	filterName: jsii.String("filterName"),
})

func NewCfnMetricFilter 

func NewCfnMetricFilter(scope awscdk.Construct, id *string, props *CfnMetricFilterProps) CfnMetricFilter

Create a new `AWS::Logs::MetricFilter`.

type CfnMetricFilterProps 

type CfnMetricFilterProps struct {
	// A filter pattern for extracting metric data out of ingested log events.
	//
	// For more information, see [Filter and Pattern Syntax](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html) .
	FilterPattern *string `field:"required" json:"filterPattern" yaml:"filterPattern"`
	// The name of an existing log group that you want to associate with this metric filter.
	LogGroupName *string `field:"required" json:"logGroupName" yaml:"logGroupName"`
	// The metric transformations.
	MetricTransformations interface{} `field:"required" json:"metricTransformations" yaml:"metricTransformations"`
	// `AWS::Logs::MetricFilter.FilterName`.
	FilterName *string `field:"optional" json:"filterName" yaml:"filterName"`
}

Properties for defining a `CfnMetricFilter`.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnMetricFilterProps := &cfnMetricFilterProps{
	filterPattern: jsii.String("filterPattern"),
	logGroupName: jsii.String("logGroupName"),
	metricTransformations: []interface{}{
		&metricTransformationProperty{
			metricName: jsii.String("metricName"),
			metricNamespace: jsii.String("metricNamespace"),
			metricValue: jsii.String("metricValue"),

			// the properties below are optional
			defaultValue: jsii.Number(123),
			dimensions: []interface{}{
				&dimensionProperty{
					key: jsii.String("key"),
					value: jsii.String("value"),
				},
			},
			unit: jsii.String("unit"),
		},
	},

	// the properties below are optional
	filterName: jsii.String("filterName"),
}

type CfnMetricFilter_DimensionProperty 

type CfnMetricFilter_DimensionProperty struct {
	// `CfnMetricFilter.DimensionProperty.Key`.
	Key *string `field:"required" json:"key" yaml:"key"`
	// `CfnMetricFilter.DimensionProperty.Value`.
	Value *string `field:"required" json:"value" yaml:"value"`
}

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

dimensionProperty := &dimensionProperty{
	key: jsii.String("key"),
	value: jsii.String("value"),
}

type CfnMetricFilter_MetricTransformationProperty 

type CfnMetricFilter_MetricTransformationProperty struct {
	// The name of the CloudWatch metric.
	MetricName *string `field:"required" json:"metricName" yaml:"metricName"`
	// A custom namespace to contain your metric in CloudWatch.
	//
	// Use namespaces to group together metrics that are similar. For more information, see [Namespaces](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_concepts.html#Namespace) .
	MetricNamespace *string `field:"required" json:"metricNamespace" yaml:"metricNamespace"`
	// The value that is published to the CloudWatch metric.
	//
	// For example, if you're counting the occurrences of a particular term like `Error` , specify 1 for the metric value. If you're counting the number of bytes transferred, reference the value that is in the log event by using $ followed by the name of the field that you specified in the filter pattern, such as `$.size` .
	MetricValue *string `field:"required" json:"metricValue" yaml:"metricValue"`
	// (Optional) The value to emit when a filter pattern does not match a log event.
	//
	// This value can be null.
	DefaultValue *float64 `field:"optional" json:"defaultValue" yaml:"defaultValue"`
	// `CfnMetricFilter.MetricTransformationProperty.Dimensions`.
	Dimensions interface{} `field:"optional" json:"dimensions" yaml:"dimensions"`
	// `CfnMetricFilter.MetricTransformationProperty.Unit`.
	Unit *string `field:"optional" json:"unit" yaml:"unit"`
}

`MetricTransformation` is a property of the `AWS::Logs::MetricFilter` resource that describes how to transform log streams into a CloudWatch metric.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

metricTransformationProperty := &metricTransformationProperty{
	metricName: jsii.String("metricName"),
	metricNamespace: jsii.String("metricNamespace"),
	metricValue: jsii.String("metricValue"),

	// the properties below are optional
	defaultValue: jsii.Number(123),
	dimensions: []interface{}{
		&dimensionProperty{
			key: jsii.String("key"),
			value: jsii.String("value"),
		},
	},
	unit: jsii.String("unit"),
}

type CfnQueryDefinition 

type CfnQueryDefinition interface {
	awscdk.CfnResource
	awscdk.IInspectable
	// The ID of the query definition.
	AttrQueryDefinitionId() *string
	// Options for this resource, such as condition, update policy etc.
	// Experimental.
	CfnOptions() awscdk.ICfnResourceOptions
	CfnProperties() *map[string]interface{}
	// AWS resource type.
	// Experimental.
	CfnResourceType() *string
	// Returns: the stack trace of the point where this Resource was created from, sourced
	// from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most
	// node +internal+ entries filtered.
	// Experimental.
	CreationStack() *[]*string
	// Use this parameter if you want the query to query only certain log groups.
	LogGroupNames() *[]*string
	SetLogGroupNames(val *[]*string)
	// The logical ID for this CloudFormation stack element.
	//
	// The logical ID of the element
	// is calculated from the path of the resource node in the construct tree.
	//
	// To override this value, use `overrideLogicalId(newLogicalId)`.
	//
	// Returns: the logical ID as a stringified token. This value will only get
	// resolved during synthesis.
	// Experimental.
	LogicalId() *string
	// A name for the query definition.
	Name() *string
	SetName(val *string)
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// The query string to use for this query definition.
	//
	// For more information, see [CloudWatch Logs Insights Query Syntax](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/CWL_QuerySyntax.html) .
	QueryString() *string
	SetQueryString(val *string)
	// Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
	//
	// If, by any chance, the intrinsic reference of a resource is not a string, you could
	// coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.
	// Experimental.
	Ref() *string
	// The stack in which this element is defined.
	//
	// CfnElements must be defined within a stack scope (directly or indirectly).
	// Experimental.
	Stack() awscdk.Stack
	// Return properties modified after initiation.
	//
	// Resources that expose mutable properties should override this function to
	// collect and return the properties object for this resource.
	// Experimental.
	UpdatedProperites() *map[string]interface{}
	// Syntactic sugar for `addOverride(path, undefined)`.
	// Experimental.
	AddDeletionOverride(path *string)
	// Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
	//
	// This can be used for resources across stacks (or nested stack) boundaries
	// and the dependency will automatically be transferred to the relevant scope.
	// Experimental.
	AddDependsOn(target awscdk.CfnResource)
	// Add a value to the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	AddMetadata(key *string, value interface{})
	// Adds an override to the synthesized CloudFormation resource.
	//
	// To add a
	// property override, either use `addPropertyOverride` or prefix `path` with
	// "Properties." (i.e. `Properties.TopicName`).
	//
	// If the override is nested, separate each nested level using a dot (.) in the path parameter.
	// If there is an array as part of the nesting, specify the index in the path.
	//
	// To include a literal `.` in the property name, prefix with a `\`. In most
	// programming languages you will need to write this as `"\\."` because the
	// `\` itself will need to be escaped.
	//
	// For example,
	// “`typescript
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
	// “`
	// would add the overrides
	// “`json
	// "Properties": {
	//    "GlobalSecondaryIndexes": [
	//      {
	//        "Projection": {
	//          "NonKeyAttributes": [ "myattribute" ]
	//          ...
	//        }
	//        ...
	//      },
	//      {
	//        "ProjectionType": "INCLUDE"
	//        ...
	//      },
	//    ]
	//    ...
	// }
	// “`
	//
	// The `value` argument to `addOverride` will not be processed or translated
	// in any way. Pass raw JSON values in here with the correct capitalization
	// for CloudFormation. If you pass CDK classes or structs, they will be
	// rendered with lowercased key names, and CloudFormation will reject the
	// template.
	// Experimental.
	AddOverride(path *string, value interface{})
	// Adds an override that deletes the value of a property from the resource definition.
	// Experimental.
	AddPropertyDeletionOverride(propertyPath *string)
	// Adds an override to a resource property.
	//
	// Syntactic sugar for `addOverride("Properties.<...>", value)`.
	// Experimental.
	AddPropertyOverride(propertyPath *string, value interface{})
	// Sets the deletion policy of the resource based on the removal policy specified.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy, options *awscdk.RemovalPolicyOptions)
	// Returns a token for an runtime attribute of this resource.
	//
	// Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
	// in case there is no generated attribute.
	// Experimental.
	GetAtt(attributeName *string) awscdk.Reference
	// Retrieve a value value from the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	GetMetadata(key *string) interface{}
	// Examines the CloudFormation resource and discloses attributes.
	Inspect(inspector awscdk.TreeInspector)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Overrides the auto-generated logical ID with a specific ID.
	// Experimental.
	OverrideLogicalId(newLogicalId *string)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	RenderProperties(props *map[string]interface{}) *map[string]interface{}
	// Can be overridden by subclasses to determine if this resource will be rendered into the cloudformation template.
	//
	// Returns: `true` if the resource should be included or `false` is the resource
	// should be omitted.
	// Experimental.
	ShouldSynthesize() *bool
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	//
	// Returns: a string representation of this resource.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
	// Experimental.
	ValidateProperties(_properties interface{})
}

A CloudFormation `AWS::Logs::QueryDefinition`.

Creates a query definition for CloudWatch Logs Insights. For more information, see [Analyzing Log Data with CloudWatch Logs Insights](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/AnalyzingLogData.html) .

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnQueryDefinition := awscdk.Aws_logs.NewCfnQueryDefinition(this, jsii.String("MyCfnQueryDefinition"), &cfnQueryDefinitionProps{
	name: jsii.String("name"),
	queryString: jsii.String("queryString"),

	// the properties below are optional
	logGroupNames: []*string{
		jsii.String("logGroupNames"),
	},
})

func NewCfnQueryDefinition 

func NewCfnQueryDefinition(scope awscdk.Construct, id *string, props *CfnQueryDefinitionProps) CfnQueryDefinition

Create a new `AWS::Logs::QueryDefinition`.

type CfnQueryDefinitionProps 

type CfnQueryDefinitionProps struct {
	// A name for the query definition.
	Name *string `field:"required" json:"name" yaml:"name"`
	// The query string to use for this query definition.
	//
	// For more information, see [CloudWatch Logs Insights Query Syntax](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/CWL_QuerySyntax.html) .
	QueryString *string `field:"required" json:"queryString" yaml:"queryString"`
	// Use this parameter if you want the query to query only certain log groups.
	LogGroupNames *[]*string `field:"optional" json:"logGroupNames" yaml:"logGroupNames"`
}

Properties for defining a `CfnQueryDefinition`.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnQueryDefinitionProps := &cfnQueryDefinitionProps{
	name: jsii.String("name"),
	queryString: jsii.String("queryString"),

	// the properties below are optional
	logGroupNames: []*string{
		jsii.String("logGroupNames"),
	},
}

type CfnResourcePolicy 

type CfnResourcePolicy interface {
	awscdk.CfnResource
	awscdk.IInspectable
	// Options for this resource, such as condition, update policy etc.
	// Experimental.
	CfnOptions() awscdk.ICfnResourceOptions
	CfnProperties() *map[string]interface{}
	// AWS resource type.
	// Experimental.
	CfnResourceType() *string
	// Returns: the stack trace of the point where this Resource was created from, sourced
	// from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most
	// node +internal+ entries filtered.
	// Experimental.
	CreationStack() *[]*string
	// The logical ID for this CloudFormation stack element.
	//
	// The logical ID of the element
	// is calculated from the path of the resource node in the construct tree.
	//
	// To override this value, use `overrideLogicalId(newLogicalId)`.
	//
	// Returns: the logical ID as a stringified token. This value will only get
	// resolved during synthesis.
	// Experimental.
	LogicalId() *string
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// The details of the policy.
	//
	// It must be formatted in JSON, and you must use backslashes to escape characters that need to be escaped in JSON strings, such as double quote marks.
	PolicyDocument() *string
	SetPolicyDocument(val *string)
	// The name of the resource policy.
	PolicyName() *string
	SetPolicyName(val *string)
	// Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
	//
	// If, by any chance, the intrinsic reference of a resource is not a string, you could
	// coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.
	// Experimental.
	Ref() *string
	// The stack in which this element is defined.
	//
	// CfnElements must be defined within a stack scope (directly or indirectly).
	// Experimental.
	Stack() awscdk.Stack
	// Return properties modified after initiation.
	//
	// Resources that expose mutable properties should override this function to
	// collect and return the properties object for this resource.
	// Experimental.
	UpdatedProperites() *map[string]interface{}
	// Syntactic sugar for `addOverride(path, undefined)`.
	// Experimental.
	AddDeletionOverride(path *string)
	// Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
	//
	// This can be used for resources across stacks (or nested stack) boundaries
	// and the dependency will automatically be transferred to the relevant scope.
	// Experimental.
	AddDependsOn(target awscdk.CfnResource)
	// Add a value to the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	AddMetadata(key *string, value interface{})
	// Adds an override to the synthesized CloudFormation resource.
	//
	// To add a
	// property override, either use `addPropertyOverride` or prefix `path` with
	// "Properties." (i.e. `Properties.TopicName`).
	//
	// If the override is nested, separate each nested level using a dot (.) in the path parameter.
	// If there is an array as part of the nesting, specify the index in the path.
	//
	// To include a literal `.` in the property name, prefix with a `\`. In most
	// programming languages you will need to write this as `"\\."` because the
	// `\` itself will need to be escaped.
	//
	// For example,
	// “`typescript
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
	// “`
	// would add the overrides
	// “`json
	// "Properties": {
	//    "GlobalSecondaryIndexes": [
	//      {
	//        "Projection": {
	//          "NonKeyAttributes": [ "myattribute" ]
	//          ...
	//        }
	//        ...
	//      },
	//      {
	//        "ProjectionType": "INCLUDE"
	//        ...
	//      },
	//    ]
	//    ...
	// }
	// “`
	//
	// The `value` argument to `addOverride` will not be processed or translated
	// in any way. Pass raw JSON values in here with the correct capitalization
	// for CloudFormation. If you pass CDK classes or structs, they will be
	// rendered with lowercased key names, and CloudFormation will reject the
	// template.
	// Experimental.
	AddOverride(path *string, value interface{})
	// Adds an override that deletes the value of a property from the resource definition.
	// Experimental.
	AddPropertyDeletionOverride(propertyPath *string)
	// Adds an override to a resource property.
	//
	// Syntactic sugar for `addOverride("Properties.<...>", value)`.
	// Experimental.
	AddPropertyOverride(propertyPath *string, value interface{})
	// Sets the deletion policy of the resource based on the removal policy specified.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy, options *awscdk.RemovalPolicyOptions)
	// Returns a token for an runtime attribute of this resource.
	//
	// Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
	// in case there is no generated attribute.
	// Experimental.
	GetAtt(attributeName *string) awscdk.Reference
	// Retrieve a value value from the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	GetMetadata(key *string) interface{}
	// Examines the CloudFormation resource and discloses attributes.
	Inspect(inspector awscdk.TreeInspector)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Overrides the auto-generated logical ID with a specific ID.
	// Experimental.
	OverrideLogicalId(newLogicalId *string)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	RenderProperties(props *map[string]interface{}) *map[string]interface{}
	// Can be overridden by subclasses to determine if this resource will be rendered into the cloudformation template.
	//
	// Returns: `true` if the resource should be included or `false` is the resource
	// should be omitted.
	// Experimental.
	ShouldSynthesize() *bool
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	//
	// Returns: a string representation of this resource.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
	// Experimental.
	ValidateProperties(_properties interface{})
}

A CloudFormation `AWS::Logs::ResourcePolicy`.

Creates or updates a resource policy that allows other AWS services to put log events to this account. An account can have up to 10 resource policies per AWS Region.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnResourcePolicy := awscdk.Aws_logs.NewCfnResourcePolicy(this, jsii.String("MyCfnResourcePolicy"), &cfnResourcePolicyProps{
	policyDocument: jsii.String("policyDocument"),
	policyName: jsii.String("policyName"),
})

func NewCfnResourcePolicy 

func NewCfnResourcePolicy(scope awscdk.Construct, id *string, props *CfnResourcePolicyProps) CfnResourcePolicy

Create a new `AWS::Logs::ResourcePolicy`.

type CfnResourcePolicyProps 

type CfnResourcePolicyProps struct {
	// The details of the policy.
	//
	// It must be formatted in JSON, and you must use backslashes to escape characters that need to be escaped in JSON strings, such as double quote marks.
	PolicyDocument *string `field:"required" json:"policyDocument" yaml:"policyDocument"`
	// The name of the resource policy.
	PolicyName *string `field:"required" json:"policyName" yaml:"policyName"`
}

Properties for defining a `CfnResourcePolicy`.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnResourcePolicyProps := &cfnResourcePolicyProps{
	policyDocument: jsii.String("policyDocument"),
	policyName: jsii.String("policyName"),
}

type CfnSubscriptionFilter 

type CfnSubscriptionFilter interface {
	awscdk.CfnResource
	awscdk.IInspectable
	// Options for this resource, such as condition, update policy etc.
	// Experimental.
	CfnOptions() awscdk.ICfnResourceOptions
	CfnProperties() *map[string]interface{}
	// AWS resource type.
	// Experimental.
	CfnResourceType() *string
	// Returns: the stack trace of the point where this Resource was created from, sourced
	// from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most
	// node +internal+ entries filtered.
	// Experimental.
	CreationStack() *[]*string
	// The Amazon Resource Name (ARN) of the destination.
	DestinationArn() *string
	SetDestinationArn(val *string)
	// The filtering expressions that restrict what gets delivered to the destination AWS resource.
	//
	// For more information about the filter pattern syntax, see [Filter and Pattern Syntax](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html) .
	FilterPattern() *string
	SetFilterPattern(val *string)
	// The log group to associate with the subscription filter.
	//
	// All log events that are uploaded to this log group are filtered and delivered to the specified AWS resource if the filter pattern matches the log events.
	LogGroupName() *string
	SetLogGroupName(val *string)
	// The logical ID for this CloudFormation stack element.
	//
	// The logical ID of the element
	// is calculated from the path of the resource node in the construct tree.
	//
	// To override this value, use `overrideLogicalId(newLogicalId)`.
	//
	// Returns: the logical ID as a stringified token. This value will only get
	// resolved during synthesis.
	// Experimental.
	LogicalId() *string
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
	//
	// If, by any chance, the intrinsic reference of a resource is not a string, you could
	// coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.
	// Experimental.
	Ref() *string
	// The ARN of an IAM role that grants CloudWatch Logs permissions to deliver ingested log events to the destination stream.
	//
	// You don't need to provide the ARN when you are working with a logical destination for cross-account delivery.
	RoleArn() *string
	SetRoleArn(val *string)
	// The stack in which this element is defined.
	//
	// CfnElements must be defined within a stack scope (directly or indirectly).
	// Experimental.
	Stack() awscdk.Stack
	// Return properties modified after initiation.
	//
	// Resources that expose mutable properties should override this function to
	// collect and return the properties object for this resource.
	// Experimental.
	UpdatedProperites() *map[string]interface{}
	// Syntactic sugar for `addOverride(path, undefined)`.
	// Experimental.
	AddDeletionOverride(path *string)
	// Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
	//
	// This can be used for resources across stacks (or nested stack) boundaries
	// and the dependency will automatically be transferred to the relevant scope.
	// Experimental.
	AddDependsOn(target awscdk.CfnResource)
	// Add a value to the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	AddMetadata(key *string, value interface{})
	// Adds an override to the synthesized CloudFormation resource.
	//
	// To add a
	// property override, either use `addPropertyOverride` or prefix `path` with
	// "Properties." (i.e. `Properties.TopicName`).
	//
	// If the override is nested, separate each nested level using a dot (.) in the path parameter.
	// If there is an array as part of the nesting, specify the index in the path.
	//
	// To include a literal `.` in the property name, prefix with a `\`. In most
	// programming languages you will need to write this as `"\\."` because the
	// `\` itself will need to be escaped.
	//
	// For example,
	// “`typescript
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
	// cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
	// “`
	// would add the overrides
	// “`json
	// "Properties": {
	//    "GlobalSecondaryIndexes": [
	//      {
	//        "Projection": {
	//          "NonKeyAttributes": [ "myattribute" ]
	//          ...
	//        }
	//        ...
	//      },
	//      {
	//        "ProjectionType": "INCLUDE"
	//        ...
	//      },
	//    ]
	//    ...
	// }
	// “`
	//
	// The `value` argument to `addOverride` will not be processed or translated
	// in any way. Pass raw JSON values in here with the correct capitalization
	// for CloudFormation. If you pass CDK classes or structs, they will be
	// rendered with lowercased key names, and CloudFormation will reject the
	// template.
	// Experimental.
	AddOverride(path *string, value interface{})
	// Adds an override that deletes the value of a property from the resource definition.
	// Experimental.
	AddPropertyDeletionOverride(propertyPath *string)
	// Adds an override to a resource property.
	//
	// Syntactic sugar for `addOverride("Properties.<...>", value)`.
	// Experimental.
	AddPropertyOverride(propertyPath *string, value interface{})
	// Sets the deletion policy of the resource based on the removal policy specified.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy, options *awscdk.RemovalPolicyOptions)
	// Returns a token for an runtime attribute of this resource.
	//
	// Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
	// in case there is no generated attribute.
	// Experimental.
	GetAtt(attributeName *string) awscdk.Reference
	// Retrieve a value value from the CloudFormation Resource Metadata.
	// See: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html
	//
	// Note that this is a different set of metadata from CDK node metadata; this
	// metadata ends up in the stack template under the resource, whereas CDK
	// node metadata ends up in the Cloud Assembly.
	//
	// Experimental.
	GetMetadata(key *string) interface{}
	// Examines the CloudFormation resource and discloses attributes.
	Inspect(inspector awscdk.TreeInspector)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Overrides the auto-generated logical ID with a specific ID.
	// Experimental.
	OverrideLogicalId(newLogicalId *string)
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	RenderProperties(props *map[string]interface{}) *map[string]interface{}
	// Can be overridden by subclasses to determine if this resource will be rendered into the cloudformation template.
	//
	// Returns: `true` if the resource should be included or `false` is the resource
	// should be omitted.
	// Experimental.
	ShouldSynthesize() *bool
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	//
	// Returns: a string representation of this resource.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
	// Experimental.
	ValidateProperties(_properties interface{})
}

A CloudFormation `AWS::Logs::SubscriptionFilter`.

The `AWS::Logs::SubscriptionFilter` resource specifies a subscription filter and associates it with the specified log group. Subscription filters allow you to subscribe to a real-time stream of log events and have them delivered to a specific destination. Currently, the supported destinations are:

- An Amazon Kinesis data stream belonging to the same account as the subscription filter, for same-account delivery. - A logical destination that belongs to a different account, for cross-account delivery. - An Amazon Kinesis Firehose delivery stream that belongs to the same account as the subscription filter, for same-account delivery. - An AWS Lambda function that belongs to the same account as the subscription filter, for same-account delivery.

There can as many as two subscription filters associated with a log group.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnSubscriptionFilter := awscdk.Aws_logs.NewCfnSubscriptionFilter(this, jsii.String("MyCfnSubscriptionFilter"), &cfnSubscriptionFilterProps{
	destinationArn: jsii.String("destinationArn"),
	filterPattern: jsii.String("filterPattern"),
	logGroupName: jsii.String("logGroupName"),

	// the properties below are optional
	roleArn: jsii.String("roleArn"),
})

func NewCfnSubscriptionFilter 

func NewCfnSubscriptionFilter(scope awscdk.Construct, id *string, props *CfnSubscriptionFilterProps) CfnSubscriptionFilter

Create a new `AWS::Logs::SubscriptionFilter`.

type CfnSubscriptionFilterProps 

type CfnSubscriptionFilterProps struct {
	// The Amazon Resource Name (ARN) of the destination.
	DestinationArn *string `field:"required" json:"destinationArn" yaml:"destinationArn"`
	// The filtering expressions that restrict what gets delivered to the destination AWS resource.
	//
	// For more information about the filter pattern syntax, see [Filter and Pattern Syntax](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html) .
	FilterPattern *string `field:"required" json:"filterPattern" yaml:"filterPattern"`
	// The log group to associate with the subscription filter.
	//
	// All log events that are uploaded to this log group are filtered and delivered to the specified AWS resource if the filter pattern matches the log events.
	LogGroupName *string `field:"required" json:"logGroupName" yaml:"logGroupName"`
	// The ARN of an IAM role that grants CloudWatch Logs permissions to deliver ingested log events to the destination stream.
	//
	// You don't need to provide the ARN when you are working with a logical destination for cross-account delivery.
	RoleArn *string `field:"optional" json:"roleArn" yaml:"roleArn"`
}

Properties for defining a `CfnSubscriptionFilter`.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

cfnSubscriptionFilterProps := &cfnSubscriptionFilterProps{
	destinationArn: jsii.String("destinationArn"),
	filterPattern: jsii.String("filterPattern"),
	logGroupName: jsii.String("logGroupName"),

	// the properties below are optional
	roleArn: jsii.String("roleArn"),
}

type ColumnRestriction 

type ColumnRestriction struct {
	// Comparison operator to use.
	// Experimental.
	Comparison *string `field:"required" json:"comparison" yaml:"comparison"`
	// Number value to compare to.
	//
	// Exactly one of 'stringValue' and 'numberValue' must be set.
	// Experimental.
	NumberValue *float64 `field:"optional" json:"numberValue" yaml:"numberValue"`
	// String value to compare to.
	//
	// Exactly one of 'stringValue' and 'numberValue' must be set.
	// Experimental.
	StringValue *string `field:"optional" json:"stringValue" yaml:"stringValue"`
}

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

columnRestriction := &columnRestriction{
	comparison: jsii.String("comparison"),

	// the properties below are optional
	numberValue: jsii.Number(123),
	stringValue: jsii.String("stringValue"),
}

Experimental.

type CrossAccountDestination 

type CrossAccountDestination interface {
	awscdk.Resource
	ILogSubscriptionDestination
	// The ARN of this CrossAccountDestination object.
	// Experimental.
	DestinationArn() *string
	// The name of this CrossAccountDestination object.
	// Experimental.
	DestinationName() *string
	// The environment this resource belongs to.
	//
	// For resources that are created and managed by the CDK
	// (generally, those created by creating new class instances like Role, Bucket, etc.),
	// this is always the same as the environment of the stack they belong to;
	// however, for imported resources
	// (those obtained from static methods like fromRoleArn, fromBucketName, etc.),
	// that might be different than the stack they were imported into.
	// Experimental.
	Env() *awscdk.ResourceEnvironment
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Returns a string-encoded token that resolves to the physical name that should be passed to the CloudFormation resource.
	//
	// This value will resolve to one of the following:
	// - a concrete value (e.g. `"my-awesome-bucket"`)
	// - `undefined`, when a name should be generated by CloudFormation
	// - a concrete name generated automatically during synthesis, in
	//    cross-environment scenarios.
	// Experimental.
	PhysicalName() *string
	// Policy object of this CrossAccountDestination object.
	// Experimental.
	PolicyDocument() awsiam.PolicyDocument
	// The stack in which this resource is defined.
	// Experimental.
	Stack() awscdk.Stack
	// Experimental.
	AddToPolicy(statement awsiam.PolicyStatement)
	// Apply the given removal policy to this resource.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy)
	// Return the properties required to send subscription events to this destination.
	//
	// If necessary, the destination can use the properties of the SubscriptionFilter
	// object itself to configure its permissions to allow the subscription to write
	// to it.
	//
	// The destination may reconfigure its own permissions in response to this
	// function call.
	// Experimental.
	Bind(_scope awscdk.Construct, _sourceLogGroup ILogGroup) *LogSubscriptionDestinationConfig
	// Experimental.
	GeneratePhysicalName() *string
	// Returns an environment-sensitive token that should be used for the resource's "ARN" attribute (e.g. `bucket.bucketArn`).
	//
	// Normally, this token will resolve to `arnAttr`, but if the resource is
	// referenced across environments, `arnComponents` will be used to synthesize
	// a concrete ARN with the resource's physical name. Make sure to reference
	// `this.physicalName` in `arnComponents`.
	// Experimental.
	GetResourceArnAttribute(arnAttr *string, arnComponents *awscdk.ArnComponents) *string
	// Returns an environment-sensitive token that should be used for the resource's "name" attribute (e.g. `bucket.bucketName`).
	//
	// Normally, this token will resolve to `nameAttr`, but if the resource is
	// referenced across environments, it will be resolved to `this.physicalName`,
	// which will be a concrete name.
	// Experimental.
	GetResourceNameAttribute(nameAttr *string) *string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

A new CloudWatch Logs Destination for use in cross-account scenarios.

CrossAccountDestinations are used to subscribe a Kinesis stream in a different account to a CloudWatch Subscription.

Consumers will hardly ever need to use this class. Instead, directly subscribe a Kinesis stream using the integration class in the `@aws-cdk/aws-logs-destinations` package; if necessary, a `CrossAccountDestination` will be created automatically.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var role role

crossAccountDestination := awscdk.Aws_logs.NewCrossAccountDestination(this, jsii.String("MyCrossAccountDestination"), &crossAccountDestinationProps{
	role: role,
	targetArn: jsii.String("targetArn"),

	// the properties below are optional
	destinationName: jsii.String("destinationName"),
})

Experimental.

func NewCrossAccountDestination 

func NewCrossAccountDestination(scope constructs.Construct, id *string, props *CrossAccountDestinationProps) CrossAccountDestination

Experimental.

type CrossAccountDestinationProps 

type CrossAccountDestinationProps struct {
	// The role to assume that grants permissions to write to 'target'.
	//
	// The role must be assumable by 'logs.{REGION}.amazonaws.com'.
	// Experimental.
	Role awsiam.IRole `field:"required" json:"role" yaml:"role"`
	// The log destination target's ARN.
	// Experimental.
	TargetArn *string `field:"required" json:"targetArn" yaml:"targetArn"`
	// The name of the log destination.
	// Experimental.
	DestinationName *string `field:"optional" json:"destinationName" yaml:"destinationName"`
}

Properties for a CrossAccountDestination.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var role role

crossAccountDestinationProps := &crossAccountDestinationProps{
	role: role,
	targetArn: jsii.String("targetArn"),

	// the properties below are optional
	destinationName: jsii.String("destinationName"),
}

Experimental.

type FilterPattern 

type FilterPattern interface {
}

A collection of static methods to generate appropriate ILogPatterns.

Example: 

// Search for lines that contain both "ERROR" and "MainThread"
pattern1 := logs.filterPattern.allTerms(jsii.String("ERROR"), jsii.String("MainThread"))

// Search for lines that either contain both "ERROR" and "MainThread", or
// both "WARN" and "Deadlock".
pattern2 := logs.filterPattern.anyTermGroup([]*string{
	jsii.String("ERROR"),
	jsii.String("MainThread"),
}, []*string{
	jsii.String("WARN"),
	jsii.String("Deadlock"),
})

Experimental.

func NewFilterPattern 

func NewFilterPattern() FilterPattern

Experimental.

type IFilterPattern 

type IFilterPattern interface {
	// Experimental.
	LogPatternString() *string
}

Interface for objects that can render themselves to log patterns. Experimental.

func FilterPattern_AllEvents 

func FilterPattern_AllEvents() IFilterPattern

A log pattern that matches all events. Experimental.

func FilterPattern_AllTerms 

func FilterPattern_AllTerms(terms ...*string) IFilterPattern

A log pattern that matches if all the strings given appear in the event. Experimental.

func FilterPattern_AnyTerm 

func FilterPattern_AnyTerm(terms ...*string) IFilterPattern

A log pattern that matches if any of the strings given appear in the event. Experimental.

func FilterPattern_AnyTermGroup 

func FilterPattern_AnyTermGroup(termGroups ...*[]*string) IFilterPattern

A log pattern that matches if any of the given term groups matches the event.

A term group matches an event if all the terms in it appear in the event string. Experimental.

func FilterPattern_Literal 

func FilterPattern_Literal(logPatternString *string) IFilterPattern

Use the given string as log pattern.

See https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html for information on writing log patterns. Experimental.

type ILogGroup 

type ILogGroup interface {
	awsiam.IResourceWithPolicy
	// Create a new Metric Filter on this Log Group.
	// Experimental.
	AddMetricFilter(id *string, props *MetricFilterOptions) MetricFilter
	// Create a new Log Stream for this Log Group.
	// Experimental.
	AddStream(id *string, props *StreamOptions) LogStream
	// Create a new Subscription Filter on this Log Group.
	// Experimental.
	AddSubscriptionFilter(id *string, props *SubscriptionFilterOptions) SubscriptionFilter
	// Extract a metric from structured log events in the LogGroup.
	//
	// Creates a MetricFilter on this LogGroup that will extract the value
	// of the indicated JSON field in all records where it occurs.
	//
	// The metric will be available in CloudWatch Metrics under the
	// indicated namespace and name.
	//
	// Returns: A Metric object representing the extracted metric.
	// Experimental.
	ExtractMetric(jsonField *string, metricNamespace *string, metricName *string) awscloudwatch.Metric
	// Give the indicated permissions on this log group and all streams.
	// Experimental.
	Grant(grantee awsiam.IGrantable, actions ...*string) awsiam.Grant
	// Give permissions to write to create and write to streams in this log group.
	// Experimental.
	GrantWrite(grantee awsiam.IGrantable) awsiam.Grant
	// Public method to get the physical name of this log group.
	// Experimental.
	LogGroupPhysicalName() *string
	// The ARN of this log group, with ':*' appended.
	// Experimental.
	LogGroupArn() *string
	// The name of this log group.
	// Experimental.
	LogGroupName() *string
}

Experimental.

func LogGroup_FromLogGroupArn 

func LogGroup_FromLogGroupArn(scope constructs.Construct, id *string, logGroupArn *string) ILogGroup

Import an existing LogGroup given its ARN. Experimental.

func LogGroup_FromLogGroupName 

func LogGroup_FromLogGroupName(scope constructs.Construct, id *string, logGroupName *string) ILogGroup

Import an existing LogGroup given its name. Experimental.

type ILogStream 

type ILogStream interface {
	awscdk.IResource
	// The name of this log stream.
	// Experimental.
	LogStreamName() *string
}

Experimental.

func LogStream_FromLogStreamName 

func LogStream_FromLogStreamName(scope constructs.Construct, id *string, logStreamName *string) ILogStream

Import an existing LogGroup. Experimental.

type ILogSubscriptionDestination 

type ILogSubscriptionDestination interface {
	// Return the properties required to send subscription events to this destination.
	//
	// If necessary, the destination can use the properties of the SubscriptionFilter
	// object itself to configure its permissions to allow the subscription to write
	// to it.
	//
	// The destination may reconfigure its own permissions in response to this
	// function call.
	// Experimental.
	Bind(scope awscdk.Construct, sourceLogGroup ILogGroup) *LogSubscriptionDestinationConfig
}

Interface for classes that can be the destination of a log Subscription. Experimental.

type JsonPattern 

type JsonPattern interface {
	IFilterPattern
	// Experimental.
	JsonPatternString() *string
	// Experimental.
	LogPatternString() *string
}

Base class for patterns that only match JSON log events.

Example: 

// Search for all events where the component field is equal to
// "HttpServer" and either error is true or the latency is higher
// than 1000.
pattern := logs.filterPattern.all(logs.filterPattern.stringValue(jsii.String("$.component"), jsii.String("="), jsii.String("HttpServer")), logs.filterPattern.any(logs.filterPattern.booleanValue(jsii.String("$.error"), jsii.Boolean(true)), logs.filterPattern.numberValue(jsii.String("$.latency"), jsii.String(">"), jsii.Number(1000))))

Experimental.

func FilterPattern_All 

func FilterPattern_All(patterns ...JsonPattern) JsonPattern

A JSON log pattern that matches if all given JSON log patterns match. Experimental.

func FilterPattern_Any 

func FilterPattern_Any(patterns ...JsonPattern) JsonPattern

A JSON log pattern that matches if any of the given JSON log patterns match. Experimental.

func FilterPattern_BooleanValue 

func FilterPattern_BooleanValue(jsonField *string, value *bool) JsonPattern

A JSON log pattern that matches if the field exists and equals the boolean value. Experimental.

func FilterPattern_Exists 

func FilterPattern_Exists(jsonField *string) JsonPattern

A JSON log patter that matches if the field exists.

This is a readable convenience wrapper over 'field = *'. Experimental.

func FilterPattern_IsNull 

func FilterPattern_IsNull(jsonField *string) JsonPattern

A JSON log pattern that matches if the field exists and has the special value 'null'. Experimental.

func FilterPattern_NotExists 

func FilterPattern_NotExists(jsonField *string) JsonPattern

A JSON log pattern that matches if the field does not exist. Experimental.

func FilterPattern_NumberValue 

func FilterPattern_NumberValue(jsonField *string, comparison *string, value *float64) JsonPattern

A JSON log pattern that compares numerical values.

This pattern only matches if the event is a JSON event, and the indicated field inside compares with the value in the indicated way.

Use '$' to indicate the root of the JSON structure. The comparison operator can only compare equality or inequality. The '*' wildcard may appear in the value may at the start or at the end.

For more information, see:

https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html Experimental.

func FilterPattern_StringValue 

func FilterPattern_StringValue(jsonField *string, comparison *string, value *string) JsonPattern

A JSON log pattern that compares string values.

This pattern only matches if the event is a JSON event, and the indicated field inside compares with the string value.

Use '$' to indicate the root of the JSON structure. The comparison operator can only compare equality or inequality. The '*' wildcard may appear in the value may at the start or at the end.

For more information, see:

https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html Experimental.

type LogGroup 

type LogGroup interface {
	awscdk.Resource
	ILogGroup
	// The environment this resource belongs to.
	//
	// For resources that are created and managed by the CDK
	// (generally, those created by creating new class instances like Role, Bucket, etc.),
	// this is always the same as the environment of the stack they belong to;
	// however, for imported resources
	// (those obtained from static methods like fromRoleArn, fromBucketName, etc.),
	// that might be different than the stack they were imported into.
	// Experimental.
	Env() *awscdk.ResourceEnvironment
	// The ARN of this log group.
	// Experimental.
	LogGroupArn() *string
	// The name of this log group.
	// Experimental.
	LogGroupName() *string
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Returns a string-encoded token that resolves to the physical name that should be passed to the CloudFormation resource.
	//
	// This value will resolve to one of the following:
	// - a concrete value (e.g. `"my-awesome-bucket"`)
	// - `undefined`, when a name should be generated by CloudFormation
	// - a concrete name generated automatically during synthesis, in
	//    cross-environment scenarios.
	// Experimental.
	PhysicalName() *string
	// The stack in which this resource is defined.
	// Experimental.
	Stack() awscdk.Stack
	// Create a new Metric Filter on this Log Group.
	// Experimental.
	AddMetricFilter(id *string, props *MetricFilterOptions) MetricFilter
	// Create a new Log Stream for this Log Group.
	// Experimental.
	AddStream(id *string, props *StreamOptions) LogStream
	// Create a new Subscription Filter on this Log Group.
	// Experimental.
	AddSubscriptionFilter(id *string, props *SubscriptionFilterOptions) SubscriptionFilter
	// Adds a statement to the resource policy associated with this log group.
	//
	// A resource policy will be automatically created upon the first call to `addToResourcePolicy`.
	//
	// Any ARN Principals inside of the statement will be converted into AWS Account ID strings
	// because CloudWatch Logs Resource Policies do not accept ARN principals.
	// Experimental.
	AddToResourcePolicy(statement awsiam.PolicyStatement) *awsiam.AddToResourcePolicyResult
	// Apply the given removal policy to this resource.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy)
	// Extract a metric from structured log events in the LogGroup.
	//
	// Creates a MetricFilter on this LogGroup that will extract the value
	// of the indicated JSON field in all records where it occurs.
	//
	// The metric will be available in CloudWatch Metrics under the
	// indicated namespace and name.
	//
	// Returns: A Metric object representing the extracted metric.
	// Experimental.
	ExtractMetric(jsonField *string, metricNamespace *string, metricName *string) awscloudwatch.Metric
	// Experimental.
	GeneratePhysicalName() *string
	// Returns an environment-sensitive token that should be used for the resource's "ARN" attribute (e.g. `bucket.bucketArn`).
	//
	// Normally, this token will resolve to `arnAttr`, but if the resource is
	// referenced across environments, `arnComponents` will be used to synthesize
	// a concrete ARN with the resource's physical name. Make sure to reference
	// `this.physicalName` in `arnComponents`.
	// Experimental.
	GetResourceArnAttribute(arnAttr *string, arnComponents *awscdk.ArnComponents) *string
	// Returns an environment-sensitive token that should be used for the resource's "name" attribute (e.g. `bucket.bucketName`).
	//
	// Normally, this token will resolve to `nameAttr`, but if the resource is
	// referenced across environments, it will be resolved to `this.physicalName`,
	// which will be a concrete name.
	// Experimental.
	GetResourceNameAttribute(nameAttr *string) *string
	// Give the indicated permissions on this log group and all streams.
	// Experimental.
	Grant(grantee awsiam.IGrantable, actions ...*string) awsiam.Grant
	// Give permissions to create and write to streams in this log group.
	// Experimental.
	GrantWrite(grantee awsiam.IGrantable) awsiam.Grant
	// Public method to get the physical name of this log group.
	//
	// Returns: Physical name of log group.
	// Experimental.
	LogGroupPhysicalName() *string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

Define a CloudWatch Log Group.

Example: 

import logs "github.com/aws/aws-cdk-go/awscdk"

logGroup := logs.NewLogGroup(this, jsii.String("Log Group"))
logBucket := s3.NewBucket(this, jsii.String("S3 Bucket"))

tasks.NewEmrContainersStartJobRun(this, jsii.String("EMR Containers Start Job Run"), &emrContainersStartJobRunProps{
	virtualCluster: tasks.virtualClusterInput.fromVirtualClusterId(jsii.String("de92jdei2910fwedz")),
	releaseLabel: tasks.releaseLabel_EMR_6_2_0(),
	jobDriver: &jobDriver{
		sparkSubmitJobDriver: &sparkSubmitJobDriver{
			entryPoint: sfn.taskInput.fromText(jsii.String("local:///usr/lib/spark/examples/src/main/python/pi.py")),
			sparkSubmitParameters: jsii.String("--conf spark.executor.instances=2 --conf spark.executor.memory=2G --conf spark.executor.cores=2 --conf spark.driver.cores=1"),
		},
	},
	monitoring: &monitoring{
		logGroup: logGroup,
		logBucket: logBucket,
	},
})

Experimental.

func NewLogGroup 

func NewLogGroup(scope constructs.Construct, id *string, props *LogGroupProps) LogGroup

Experimental.

type LogGroupProps 

type LogGroupProps struct {
	// The KMS Key to encrypt the log group with.
	// Experimental.
	EncryptionKey awskms.IKey `field:"optional" json:"encryptionKey" yaml:"encryptionKey"`
	// Name of the log group.
	// Experimental.
	LogGroupName *string `field:"optional" json:"logGroupName" yaml:"logGroupName"`
	// Determine the removal policy of this log group.
	//
	// Normally you want to retain the log group so you can diagnose issues
	// from logs even after a deployment that no longer includes the log group.
	// In that case, use the normal date-based retention policy to age out your
	// logs.
	// Experimental.
	RemovalPolicy awscdk.RemovalPolicy `field:"optional" json:"removalPolicy" yaml:"removalPolicy"`
	// How long, in days, the log contents will be retained.
	//
	// To retain all logs, set this value to RetentionDays.INFINITE.
	// Experimental.
	Retention RetentionDays `field:"optional" json:"retention" yaml:"retention"`
}

Properties for a LogGroup.

Example: 

var vpc vpc

kmsKey := kms.NewKey(this, jsii.String("KmsKey"))

// Pass the KMS key in the `encryptionKey` field to associate the key to the log group
logGroup := logs.NewLogGroup(this, jsii.String("LogGroup"), &logGroupProps{
	encryptionKey: kmsKey,
})

// Pass the KMS key in the `encryptionKey` field to associate the key to the S3 bucket
execBucket := s3.NewBucket(this, jsii.String("EcsExecBucket"), &bucketProps{
	encryptionKey: kmsKey,
})

cluster := ecs.NewCluster(this, jsii.String("Cluster"), &clusterProps{
	vpc: vpc,
	executeCommandConfiguration: &executeCommandConfiguration{
		kmsKey: kmsKey,
		logConfiguration: &executeCommandLogConfiguration{
			cloudWatchLogGroup: logGroup,
			cloudWatchEncryptionEnabled: jsii.Boolean(true),
			s3Bucket: execBucket,
			s3EncryptionEnabled: jsii.Boolean(true),
			s3KeyPrefix: jsii.String("exec-command-output"),
		},
		logging: ecs.executeCommandLogging_OVERRIDE,
	},
})

Experimental.

type LogRetention 

type LogRetention interface {
	awscdk.Construct
	// The ARN of the LogGroup.
	// Experimental.
	LogGroupArn() *string
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

Creates a custom resource to control the retention policy of a CloudWatch Logs log group.

The log group is created if it doesn't already exist. The policy is removed when `retentionDays` is `undefined` or equal to `Infinity`. Log group can be created in the region that is different from stack region by specifying `logGroupRegion`.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import monocdk "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var duration duration
var role role

logRetention := awscdk.Aws_logs.NewLogRetention(this, jsii.String("MyLogRetention"), &logRetentionProps{
	logGroupName: jsii.String("logGroupName"),
	retention: awscdk.*Aws_logs.retentionDays_ONE_DAY,

	// the properties below are optional
	logGroupRegion: jsii.String("logGroupRegion"),
	logRetentionRetryOptions: &logRetentionRetryOptions{
		base: duration,
		maxRetries: jsii.Number(123),
	},
	role: role,
})

Experimental.

func NewLogRetention 

func NewLogRetention(scope constructs.Construct, id *string, props *LogRetentionProps) LogRetention

Experimental.

type LogRetentionProps 

type LogRetentionProps struct {
	// The log group name.
	// Experimental.
	LogGroupName *string `field:"required" json:"logGroupName" yaml:"logGroupName"`
	// The number of days log events are kept in CloudWatch Logs.
	// Experimental.
	Retention RetentionDays `field:"required" json:"retention" yaml:"retention"`
	// The region where the log group should be created.
	// Experimental.
	LogGroupRegion *string `field:"optional" json:"logGroupRegion" yaml:"logGroupRegion"`
	// Retry options for all AWS API calls.
	// Experimental.
	LogRetentionRetryOptions *LogRetentionRetryOptions `field:"optional" json:"logRetentionRetryOptions" yaml:"logRetentionRetryOptions"`
	// The IAM role for the Lambda function associated with the custom resource.
	// Experimental.
	Role awsiam.IRole `field:"optional" json:"role" yaml:"role"`
}

Construction properties for a LogRetention.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import monocdk "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var duration duration
var role role

logRetentionProps := &logRetentionProps{
	logGroupName: jsii.String("logGroupName"),
	retention: awscdk.Aws_logs.retentionDays_ONE_DAY,

	// the properties below are optional
	logGroupRegion: jsii.String("logGroupRegion"),
	logRetentionRetryOptions: &logRetentionRetryOptions{
		base: duration,
		maxRetries: jsii.Number(123),
	},
	role: role,
}

Experimental.

type LogRetentionRetryOptions 

type LogRetentionRetryOptions struct {
	// The base duration to use in the exponential backoff for operation retries.
	// Experimental.
	Base awscdk.Duration `field:"optional" json:"base" yaml:"base"`
	// The maximum amount of retries.
	// Experimental.
	MaxRetries *float64 `field:"optional" json:"maxRetries" yaml:"maxRetries"`
}

Retry options for all AWS API calls.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import monocdk "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var duration duration

logRetentionRetryOptions := &logRetentionRetryOptions{
	base: duration,
	maxRetries: jsii.Number(123),
}

Experimental.

type LogStream 

type LogStream interface {
	awscdk.Resource
	ILogStream
	// The environment this resource belongs to.
	//
	// For resources that are created and managed by the CDK
	// (generally, those created by creating new class instances like Role, Bucket, etc.),
	// this is always the same as the environment of the stack they belong to;
	// however, for imported resources
	// (those obtained from static methods like fromRoleArn, fromBucketName, etc.),
	// that might be different than the stack they were imported into.
	// Experimental.
	Env() *awscdk.ResourceEnvironment
	// The name of this log stream.
	// Experimental.
	LogStreamName() *string
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Returns a string-encoded token that resolves to the physical name that should be passed to the CloudFormation resource.
	//
	// This value will resolve to one of the following:
	// - a concrete value (e.g. `"my-awesome-bucket"`)
	// - `undefined`, when a name should be generated by CloudFormation
	// - a concrete name generated automatically during synthesis, in
	//    cross-environment scenarios.
	// Experimental.
	PhysicalName() *string
	// The stack in which this resource is defined.
	// Experimental.
	Stack() awscdk.Stack
	// Apply the given removal policy to this resource.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy)
	// Experimental.
	GeneratePhysicalName() *string
	// Returns an environment-sensitive token that should be used for the resource's "ARN" attribute (e.g. `bucket.bucketArn`).
	//
	// Normally, this token will resolve to `arnAttr`, but if the resource is
	// referenced across environments, `arnComponents` will be used to synthesize
	// a concrete ARN with the resource's physical name. Make sure to reference
	// `this.physicalName` in `arnComponents`.
	// Experimental.
	GetResourceArnAttribute(arnAttr *string, arnComponents *awscdk.ArnComponents) *string
	// Returns an environment-sensitive token that should be used for the resource's "name" attribute (e.g. `bucket.bucketName`).
	//
	// Normally, this token will resolve to `nameAttr`, but if the resource is
	// referenced across environments, it will be resolved to `this.physicalName`,
	// which will be a concrete name.
	// Experimental.
	GetResourceNameAttribute(nameAttr *string) *string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

Define a Log Stream in a Log Group.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import monocdk "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var logGroup logGroup

logStream := awscdk.Aws_logs.NewLogStream(this, jsii.String("MyLogStream"), &logStreamProps{
	logGroup: logGroup,

	// the properties below are optional
	logStreamName: jsii.String("logStreamName"),
	removalPolicy: monocdk.removalPolicy_DESTROY,
})

Experimental.

func NewLogStream 

func NewLogStream(scope constructs.Construct, id *string, props *LogStreamProps) LogStream

Experimental.

type LogStreamProps 

type LogStreamProps struct {
	// The log group to create a log stream for.
	// Experimental.
	LogGroup ILogGroup `field:"required" json:"logGroup" yaml:"logGroup"`
	// The name of the log stream to create.
	//
	// The name must be unique within the log group.
	// Experimental.
	LogStreamName *string `field:"optional" json:"logStreamName" yaml:"logStreamName"`
	// Determine what happens when the log stream resource is removed from the app.
	//
	// Normally you want to retain the log stream so you can diagnose issues from
	// logs even after a deployment that no longer includes the log stream.
	//
	// The date-based retention policy of your log group will age out the logs
	// after a certain time.
	// Experimental.
	RemovalPolicy awscdk.RemovalPolicy `field:"optional" json:"removalPolicy" yaml:"removalPolicy"`
}

Properties for a LogStream.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import monocdk "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var logGroup logGroup

logStreamProps := &logStreamProps{
	logGroup: logGroup,

	// the properties below are optional
	logStreamName: jsii.String("logStreamName"),
	removalPolicy: monocdk.removalPolicy_DESTROY,
}

Experimental.

type LogSubscriptionDestinationConfig 

type LogSubscriptionDestinationConfig struct {
	// The ARN of the subscription's destination.
	// Experimental.
	Arn *string `field:"required" json:"arn" yaml:"arn"`
	// The role to assume to write log events to the destination.
	// Experimental.
	Role awsiam.IRole `field:"optional" json:"role" yaml:"role"`
}

Properties returned by a Subscription destination.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var role role

logSubscriptionDestinationConfig := &logSubscriptionDestinationConfig{
	arn: jsii.String("arn"),

	// the properties below are optional
	role: role,
}

Experimental.

type MetricFilter 

type MetricFilter interface {
	awscdk.Resource
	// The environment this resource belongs to.
	//
	// For resources that are created and managed by the CDK
	// (generally, those created by creating new class instances like Role, Bucket, etc.),
	// this is always the same as the environment of the stack they belong to;
	// however, for imported resources
	// (those obtained from static methods like fromRoleArn, fromBucketName, etc.),
	// that might be different than the stack they were imported into.
	// Experimental.
	Env() *awscdk.ResourceEnvironment
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Returns a string-encoded token that resolves to the physical name that should be passed to the CloudFormation resource.
	//
	// This value will resolve to one of the following:
	// - a concrete value (e.g. `"my-awesome-bucket"`)
	// - `undefined`, when a name should be generated by CloudFormation
	// - a concrete name generated automatically during synthesis, in
	//    cross-environment scenarios.
	// Experimental.
	PhysicalName() *string
	// The stack in which this resource is defined.
	// Experimental.
	Stack() awscdk.Stack
	// Apply the given removal policy to this resource.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy)
	// Experimental.
	GeneratePhysicalName() *string
	// Returns an environment-sensitive token that should be used for the resource's "ARN" attribute (e.g. `bucket.bucketArn`).
	//
	// Normally, this token will resolve to `arnAttr`, but if the resource is
	// referenced across environments, `arnComponents` will be used to synthesize
	// a concrete ARN with the resource's physical name. Make sure to reference
	// `this.physicalName` in `arnComponents`.
	// Experimental.
	GetResourceArnAttribute(arnAttr *string, arnComponents *awscdk.ArnComponents) *string
	// Returns an environment-sensitive token that should be used for the resource's "name" attribute (e.g. `bucket.bucketName`).
	//
	// Normally, this token will resolve to `nameAttr`, but if the resource is
	// referenced across environments, it will be resolved to `this.physicalName`,
	// which will be a concrete name.
	// Experimental.
	GetResourceNameAttribute(nameAttr *string) *string
	// Return the given named metric for this Metric Filter.
	// Experimental.
	Metric(props *awscloudwatch.MetricOptions) awscloudwatch.Metric
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

A filter that extracts information from CloudWatch Logs and emits to CloudWatch Metrics.

Example: 

awscdk.NewMetricFilter(this, jsii.String("MetricFilter"), &metricFilterProps{
	logGroup: logGroup,
	metricNamespace: jsii.String("MyApp"),
	metricName: jsii.String("Latency"),
	filterPattern: awscdk.FilterPattern.exists(jsii.String("$.latency")),
	metricValue: jsii.String("$.latency"),
})

Experimental.

func NewMetricFilter 

func NewMetricFilter(scope constructs.Construct, id *string, props *MetricFilterProps) MetricFilter

Experimental.

type MetricFilterOptions 

type MetricFilterOptions struct {
	// Pattern to search for log events.
	// Experimental.
	FilterPattern IFilterPattern `field:"required" json:"filterPattern" yaml:"filterPattern"`
	// The name of the metric to emit.
	// Experimental.
	MetricName *string `field:"required" json:"metricName" yaml:"metricName"`
	// The namespace of the metric to emit.
	// Experimental.
	MetricNamespace *string `field:"required" json:"metricNamespace" yaml:"metricNamespace"`
	// The value to emit if the pattern does not match a particular event.
	// Experimental.
	DefaultValue *float64 `field:"optional" json:"defaultValue" yaml:"defaultValue"`
	// The value to emit for the metric.
	//
	// Can either be a literal number (typically "1"), or the name of a field in the structure
	// to take the value from the matched event. If you are using a field value, the field
	// value must have been matched using the pattern.
	//
	// If you want to specify a field from a matched JSON structure, use '$.fieldName',
	// and make sure the field is in the pattern (if only as '$.fieldName = *').
	//
	// If you want to specify a field from a matched space-delimited structure,
	// use '$fieldName'.
	// Experimental.
	MetricValue *string `field:"optional" json:"metricValue" yaml:"metricValue"`
}

Properties for a MetricFilter created from a LogGroup.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

var filterPattern iFilterPattern

metricFilterOptions := &metricFilterOptions{
	filterPattern: filterPattern,
	metricName: jsii.String("metricName"),
	metricNamespace: jsii.String("metricNamespace"),

	// the properties below are optional
	defaultValue: jsii.Number(123),
	metricValue: jsii.String("metricValue"),
}

Experimental.

type MetricFilterProps 

type MetricFilterProps struct {
	// Pattern to search for log events.
	// Experimental.
	FilterPattern IFilterPattern `field:"required" json:"filterPattern" yaml:"filterPattern"`
	// The name of the metric to emit.
	// Experimental.
	MetricName *string `field:"required" json:"metricName" yaml:"metricName"`
	// The namespace of the metric to emit.
	// Experimental.
	MetricNamespace *string `field:"required" json:"metricNamespace" yaml:"metricNamespace"`
	// The value to emit if the pattern does not match a particular event.
	// Experimental.
	DefaultValue *float64 `field:"optional" json:"defaultValue" yaml:"defaultValue"`
	// The value to emit for the metric.
	//
	// Can either be a literal number (typically "1"), or the name of a field in the structure
	// to take the value from the matched event. If you are using a field value, the field
	// value must have been matched using the pattern.
	//
	// If you want to specify a field from a matched JSON structure, use '$.fieldName',
	// and make sure the field is in the pattern (if only as '$.fieldName = *').
	//
	// If you want to specify a field from a matched space-delimited structure,
	// use '$fieldName'.
	// Experimental.
	MetricValue *string `field:"optional" json:"metricValue" yaml:"metricValue"`
	// The log group to create the filter on.
	// Experimental.
	LogGroup ILogGroup `field:"required" json:"logGroup" yaml:"logGroup"`
}

Properties for a MetricFilter.

Example: 

awscdk.NewMetricFilter(this, jsii.String("MetricFilter"), &metricFilterProps{
	logGroup: logGroup,
	metricNamespace: jsii.String("MyApp"),
	metricName: jsii.String("Latency"),
	filterPattern: awscdk.FilterPattern.exists(jsii.String("$.latency")),
	metricValue: jsii.String("$.latency"),
})

Experimental.

type QueryDefinition 

type QueryDefinition interface {
	awscdk.Resource
	// The environment this resource belongs to.
	//
	// For resources that are created and managed by the CDK
	// (generally, those created by creating new class instances like Role, Bucket, etc.),
	// this is always the same as the environment of the stack they belong to;
	// however, for imported resources
	// (those obtained from static methods like fromRoleArn, fromBucketName, etc.),
	// that might be different than the stack they were imported into.
	// Experimental.
	Env() *awscdk.ResourceEnvironment
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Returns a string-encoded token that resolves to the physical name that should be passed to the CloudFormation resource.
	//
	// This value will resolve to one of the following:
	// - a concrete value (e.g. `"my-awesome-bucket"`)
	// - `undefined`, when a name should be generated by CloudFormation
	// - a concrete name generated automatically during synthesis, in
	//    cross-environment scenarios.
	// Experimental.
	PhysicalName() *string
	// The ID of the query definition.
	// Experimental.
	QueryDefinitionId() *string
	// The stack in which this resource is defined.
	// Experimental.
	Stack() awscdk.Stack
	// Apply the given removal policy to this resource.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy)
	// Experimental.
	GeneratePhysicalName() *string
	// Returns an environment-sensitive token that should be used for the resource's "ARN" attribute (e.g. `bucket.bucketArn`).
	//
	// Normally, this token will resolve to `arnAttr`, but if the resource is
	// referenced across environments, `arnComponents` will be used to synthesize
	// a concrete ARN with the resource's physical name. Make sure to reference
	// `this.physicalName` in `arnComponents`.
	// Experimental.
	GetResourceArnAttribute(arnAttr *string, arnComponents *awscdk.ArnComponents) *string
	// Returns an environment-sensitive token that should be used for the resource's "name" attribute (e.g. `bucket.bucketName`).
	//
	// Normally, this token will resolve to `nameAttr`, but if the resource is
	// referenced across environments, it will be resolved to `this.physicalName`,
	// which will be a concrete name.
	// Experimental.
	GetResourceNameAttribute(nameAttr *string) *string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

Define a query definition for CloudWatch Logs Insights.

Example: 

logs.NewQueryDefinition(this, jsii.String("QueryDefinition"), &queryDefinitionProps{
	queryDefinitionName: jsii.String("MyQuery"),
	queryString: logs.NewQueryString(&queryStringProps{
		fields: []*string{
			jsii.String("@timestamp"),
			jsii.String("@message"),
		},
		sort: jsii.String("@timestamp desc"),
		limit: jsii.Number(20),
	}),
})

Experimental.

func NewQueryDefinition 

func NewQueryDefinition(scope constructs.Construct, id *string, props *QueryDefinitionProps) QueryDefinition

Experimental.

type QueryDefinitionProps 

type QueryDefinitionProps struct {
	// Name of the query definition.
	// Experimental.
	QueryDefinitionName *string `field:"required" json:"queryDefinitionName" yaml:"queryDefinitionName"`
	// The query string to use for this query definition.
	// Experimental.
	QueryString QueryString `field:"required" json:"queryString" yaml:"queryString"`
	// Specify certain log groups for the query definition.
	// Experimental.
	LogGroups *[]ILogGroup `field:"optional" json:"logGroups" yaml:"logGroups"`
}

Properties for a QueryDefinition.

Example: 

logs.NewQueryDefinition(this, jsii.String("QueryDefinition"), &queryDefinitionProps{
	queryDefinitionName: jsii.String("MyQuery"),
	queryString: logs.NewQueryString(&queryStringProps{
		fields: []*string{
			jsii.String("@timestamp"),
			jsii.String("@message"),
		},
		sort: jsii.String("@timestamp desc"),
		limit: jsii.Number(20),
	}),
})

Experimental.

type QueryString 

type QueryString interface {
	// String representation of this QueryString.
	// Experimental.
	ToString() *string
}

Define a QueryString.

Example: 

logs.NewQueryDefinition(this, jsii.String("QueryDefinition"), &queryDefinitionProps{
	queryDefinitionName: jsii.String("MyQuery"),
	queryString: logs.NewQueryString(&queryStringProps{
		fields: []*string{
			jsii.String("@timestamp"),
			jsii.String("@message"),
		},
		sort: jsii.String("@timestamp desc"),
		limit: jsii.Number(20),
	}),
})

Experimental.

func NewQueryString 

func NewQueryString(props *QueryStringProps) QueryString

Experimental.

type QueryStringProps 

type QueryStringProps struct {
	// Specifies which fields to display in the query results.
	// Experimental.
	Display *string `field:"optional" json:"display" yaml:"display"`
	// Retrieves the specified fields from log events for display.
	// Experimental.
	Fields *[]*string `field:"optional" json:"fields" yaml:"fields"`
	// Filters the results of a query that's based on one or more conditions.
	// Experimental.
	Filter *string `field:"optional" json:"filter" yaml:"filter"`
	// Specifies the number of log events returned by the query.
	// Experimental.
	Limit *float64 `field:"optional" json:"limit" yaml:"limit"`
	// Extracts data from a log field and creates one or more ephemeral fields that you can process further in the query.
	// Experimental.
	Parse *string `field:"optional" json:"parse" yaml:"parse"`
	// Sorts the retrieved log events.
	// Experimental.
	Sort *string `field:"optional" json:"sort" yaml:"sort"`
	// Uses log field values to calculate aggregate statistics.
	// Experimental.
	Stats *string `field:"optional" json:"stats" yaml:"stats"`
}

Properties for a QueryString.

Example: 

logs.NewQueryDefinition(this, jsii.String("QueryDefinition"), &queryDefinitionProps{
	queryDefinitionName: jsii.String("MyQuery"),
	queryString: logs.NewQueryString(&queryStringProps{
		fields: []*string{
			jsii.String("@timestamp"),
			jsii.String("@message"),
		},
		sort: jsii.String("@timestamp desc"),
		limit: jsii.Number(20),
	}),
})

Experimental.

type ResourcePolicy 

type ResourcePolicy interface {
	awscdk.Resource
	// The IAM policy document for this resource policy.
	// Experimental.
	Document() awsiam.PolicyDocument
	// The environment this resource belongs to.
	//
	// For resources that are created and managed by the CDK
	// (generally, those created by creating new class instances like Role, Bucket, etc.),
	// this is always the same as the environment of the stack they belong to;
	// however, for imported resources
	// (those obtained from static methods like fromRoleArn, fromBucketName, etc.),
	// that might be different than the stack they were imported into.
	// Experimental.
	Env() *awscdk.ResourceEnvironment
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Returns a string-encoded token that resolves to the physical name that should be passed to the CloudFormation resource.
	//
	// This value will resolve to one of the following:
	// - a concrete value (e.g. `"my-awesome-bucket"`)
	// - `undefined`, when a name should be generated by CloudFormation
	// - a concrete name generated automatically during synthesis, in
	//    cross-environment scenarios.
	// Experimental.
	PhysicalName() *string
	// The stack in which this resource is defined.
	// Experimental.
	Stack() awscdk.Stack
	// Apply the given removal policy to this resource.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy)
	// Experimental.
	GeneratePhysicalName() *string
	// Returns an environment-sensitive token that should be used for the resource's "ARN" attribute (e.g. `bucket.bucketArn`).
	//
	// Normally, this token will resolve to `arnAttr`, but if the resource is
	// referenced across environments, `arnComponents` will be used to synthesize
	// a concrete ARN with the resource's physical name. Make sure to reference
	// `this.physicalName` in `arnComponents`.
	// Experimental.
	GetResourceArnAttribute(arnAttr *string, arnComponents *awscdk.ArnComponents) *string
	// Returns an environment-sensitive token that should be used for the resource's "name" attribute (e.g. `bucket.bucketName`).
	//
	// Normally, this token will resolve to `nameAttr`, but if the resource is
	// referenced across environments, it will be resolved to `this.physicalName`,
	// which will be a concrete name.
	// Experimental.
	GetResourceNameAttribute(nameAttr *string) *string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

Resource Policy for CloudWatch Log Groups.

Policies define the operations that are allowed on this resource.

You almost never need to define this construct directly.

All AWS resources that support resource policies have a method called `addToResourcePolicy()`, which will automatically create a new resource policy if one doesn't exist yet, otherwise it will add to the existing policy.

Prefer to use `addToResourcePolicy()` instead.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var policyStatement policyStatement

resourcePolicy := awscdk.Aws_logs.NewResourcePolicy(this, jsii.String("MyResourcePolicy"), &resourcePolicyProps{
	policyStatements: []*policyStatement{
		policyStatement,
	},
	resourcePolicyName: jsii.String("resourcePolicyName"),
})

Experimental.

func NewResourcePolicy 

func NewResourcePolicy(scope constructs.Construct, id *string, props *ResourcePolicyProps) ResourcePolicy

Experimental.

type ResourcePolicyProps 

type ResourcePolicyProps struct {
	// Initial statements to add to the resource policy.
	// Experimental.
	PolicyStatements *[]awsiam.PolicyStatement `field:"optional" json:"policyStatements" yaml:"policyStatements"`
	// Name of the log group resource policy.
	// Experimental.
	ResourcePolicyName *string `field:"optional" json:"resourcePolicyName" yaml:"resourcePolicyName"`
}

Properties to define Cloudwatch log group resource policy.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var policyStatement policyStatement

resourcePolicyProps := &resourcePolicyProps{
	policyStatements: []*policyStatement{
		policyStatement,
	},
	resourcePolicyName: jsii.String("resourcePolicyName"),
}

Experimental.

type RetentionDays 

type RetentionDays string

How long, in days, the log contents will be retained.

Example: 

import logs "github.com/aws/aws-cdk-go/awscdk"
var myLogsPublishingRole role
var vpc vpc

// Exporting logs from a cluster
cluster := rds.NewDatabaseCluster(this, jsii.String("Database"), &databaseClusterProps{
	engine: rds.databaseClusterEngine.aurora(&auroraClusterEngineProps{
		version: rds.auroraEngineVersion_VER_1_17_9(),
	}),
	instanceProps: &instanceProps{
		vpc: vpc,
	},
	cloudwatchLogsExports: []*string{
		jsii.String("error"),
		jsii.String("general"),
		jsii.String("slowquery"),
		jsii.String("audit"),
	},
	 // Export all available MySQL-based logs
	cloudwatchLogsRetention: logs.retentionDays_THREE_MONTHS,
	 // Optional - default is to never expire logs
	cloudwatchLogsRetentionRole: myLogsPublishingRole,
})

// Exporting logs from an instance
instance := rds.NewDatabaseInstance(this, jsii.String("Instance"), &databaseInstanceProps{
	engine: rds.databaseInstanceEngine.postgres(&postgresInstanceEngineProps{
		version: rds.postgresEngineVersion_VER_12_3(),
	}),
	vpc: vpc,
	cloudwatchLogsExports: []*string{
		jsii.String("postgresql"),
	},
})

Experimental. 

const (
	// 1 day.
	// Experimental.
	RetentionDays_ONE_DAY RetentionDays = "ONE_DAY"
	// 3 days.
	// Experimental.
	RetentionDays_THREE_DAYS RetentionDays = "THREE_DAYS"
	// 5 days.
	// Experimental.
	RetentionDays_FIVE_DAYS RetentionDays = "FIVE_DAYS"
	// 1 week.
	// Experimental.
	RetentionDays_ONE_WEEK RetentionDays = "ONE_WEEK"
	// 2 weeks.
	// Experimental.
	RetentionDays_TWO_WEEKS RetentionDays = "TWO_WEEKS"
	// 1 month.
	// Experimental.
	RetentionDays_ONE_MONTH RetentionDays = "ONE_MONTH"
	// 2 months.
	// Experimental.
	RetentionDays_TWO_MONTHS RetentionDays = "TWO_MONTHS"
	// 3 months.
	// Experimental.
	RetentionDays_THREE_MONTHS RetentionDays = "THREE_MONTHS"
	// 4 months.
	// Experimental.
	RetentionDays_FOUR_MONTHS RetentionDays = "FOUR_MONTHS"
	// 5 months.
	// Experimental.
	RetentionDays_FIVE_MONTHS RetentionDays = "FIVE_MONTHS"
	// 6 months.
	// Experimental.
	RetentionDays_SIX_MONTHS RetentionDays = "SIX_MONTHS"
	// 1 year.
	// Experimental.
	RetentionDays_ONE_YEAR RetentionDays = "ONE_YEAR"
	// 13 months.
	// Experimental.
	RetentionDays_THIRTEEN_MONTHS RetentionDays = "THIRTEEN_MONTHS"
	// 18 months.
	// Experimental.
	RetentionDays_EIGHTEEN_MONTHS RetentionDays = "EIGHTEEN_MONTHS"
	// 2 years.
	// Experimental.
	RetentionDays_TWO_YEARS RetentionDays = "TWO_YEARS"
	// 5 years.
	// Experimental.
	RetentionDays_FIVE_YEARS RetentionDays = "FIVE_YEARS"
	// 6 years.
	// Experimental.
	RetentionDays_SIX_YEARS RetentionDays = "SIX_YEARS"
	// 7 years.
	// Experimental.
	RetentionDays_SEVEN_YEARS RetentionDays = "SEVEN_YEARS"
	// 8 years.
	// Experimental.
	RetentionDays_EIGHT_YEARS RetentionDays = "EIGHT_YEARS"
	// 9 years.
	// Experimental.
	RetentionDays_NINE_YEARS RetentionDays = "NINE_YEARS"
	// 10 years.
	// Experimental.
	RetentionDays_TEN_YEARS RetentionDays = "TEN_YEARS"
	// Retain logs forever.
	// Experimental.
	RetentionDays_INFINITE RetentionDays = "INFINITE"
)

type SpaceDelimitedTextPattern 

type SpaceDelimitedTextPattern interface {
	IFilterPattern
	// Experimental.
	LogPatternString() *string
	// Restrict where the pattern applies.
	// Experimental.
	WhereNumber(columnName *string, comparison *string, value *float64) SpaceDelimitedTextPattern
	// Restrict where the pattern applies.
	// Experimental.
	WhereString(columnName *string, comparison *string, value *string) SpaceDelimitedTextPattern
}

Space delimited text pattern.

Example: 

// Search for all events where the component is "HttpServer" and the
// result code is not equal to 200.
pattern := logs.filterPattern.spaceDelimited(jsii.String("time"), jsii.String("component"), jsii.String("..."), jsii.String("result_code"), jsii.String("latency")).whereString(jsii.String("component"), jsii.String("="), jsii.String("HttpServer")).whereNumber(jsii.String("result_code"), jsii.String("!="), jsii.Number(200))

Experimental.

func FilterPattern_SpaceDelimited 

func FilterPattern_SpaceDelimited(columns ...*string) SpaceDelimitedTextPattern

A space delimited log pattern matcher.

The log event is divided into space-delimited columns (optionally enclosed by "" or [] to capture spaces into column values), and names are given to each column.

'...' may be specified once to match any number of columns.

Afterwards, conditions may be added to individual columns. Experimental.

func NewSpaceDelimitedTextPattern 

func NewSpaceDelimitedTextPattern(columns *[]*string, restrictions *map[string]*[]*ColumnRestriction) SpaceDelimitedTextPattern

Experimental.

func SpaceDelimitedTextPattern_Construct 

func SpaceDelimitedTextPattern_Construct(columns *[]*string) SpaceDelimitedTextPattern

Construct a new instance of a space delimited text pattern.

Since this class must be public, we can't rely on the user only creating it through the `LogPattern.spaceDelimited()` factory function. We must therefore validate the argument in the constructor. Since we're returning a copy on every mutation, and we don't want to re-validate the same things on every construction, we provide a limited set of mutator functions and only validate the new data every time. Experimental.

type StreamOptions 

type StreamOptions struct {
	// The name of the log stream to create.
	//
	// The name must be unique within the log group.
	// Experimental.
	LogStreamName *string `field:"optional" json:"logStreamName" yaml:"logStreamName"`
}

Properties for a new LogStream created from a LogGroup.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

streamOptions := &streamOptions{
	logStreamName: jsii.String("logStreamName"),
}

Experimental.

type SubscriptionFilter 

type SubscriptionFilter interface {
	awscdk.Resource
	// The environment this resource belongs to.
	//
	// For resources that are created and managed by the CDK
	// (generally, those created by creating new class instances like Role, Bucket, etc.),
	// this is always the same as the environment of the stack they belong to;
	// however, for imported resources
	// (those obtained from static methods like fromRoleArn, fromBucketName, etc.),
	// that might be different than the stack they were imported into.
	// Experimental.
	Env() *awscdk.ResourceEnvironment
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Returns a string-encoded token that resolves to the physical name that should be passed to the CloudFormation resource.
	//
	// This value will resolve to one of the following:
	// - a concrete value (e.g. `"my-awesome-bucket"`)
	// - `undefined`, when a name should be generated by CloudFormation
	// - a concrete name generated automatically during synthesis, in
	//    cross-environment scenarios.
	// Experimental.
	PhysicalName() *string
	// The stack in which this resource is defined.
	// Experimental.
	Stack() awscdk.Stack
	// Apply the given removal policy to this resource.
	//
	// The Removal Policy controls what happens to this resource when it stops
	// being managed by CloudFormation, either because you've removed it from the
	// CDK application or because you've made a change that requires the resource
	// to be replaced.
	//
	// The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
	// account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
	// Experimental.
	ApplyRemovalPolicy(policy awscdk.RemovalPolicy)
	// Experimental.
	GeneratePhysicalName() *string
	// Returns an environment-sensitive token that should be used for the resource's "ARN" attribute (e.g. `bucket.bucketArn`).
	//
	// Normally, this token will resolve to `arnAttr`, but if the resource is
	// referenced across environments, `arnComponents` will be used to synthesize
	// a concrete ARN with the resource's physical name. Make sure to reference
	// `this.physicalName` in `arnComponents`.
	// Experimental.
	GetResourceArnAttribute(arnAttr *string, arnComponents *awscdk.ArnComponents) *string
	// Returns an environment-sensitive token that should be used for the resource's "name" attribute (e.g. `bucket.bucketName`).
	//
	// Normally, this token will resolve to `nameAttr`, but if the resource is
	// referenced across environments, it will be resolved to `this.physicalName`,
	// which will be a concrete name.
	// Experimental.
	GetResourceNameAttribute(nameAttr *string) *string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

A new Subscription on a CloudWatch log group.

Example: 

import destinations "github.com/aws/aws-cdk-go/awscdk"
var fn function
var logGroup logGroup

logs.NewSubscriptionFilter(this, jsii.String("Subscription"), &subscriptionFilterProps{
	logGroup: logGroup,
	destination: destinations.NewLambdaDestination(fn),
	filterPattern: logs.filterPattern.allTerms(jsii.String("ERROR"), jsii.String("MainThread")),
})

Experimental.

func NewSubscriptionFilter 

func NewSubscriptionFilter(scope constructs.Construct, id *string, props *SubscriptionFilterProps) SubscriptionFilter

Experimental.

type SubscriptionFilterOptions 

type SubscriptionFilterOptions struct {
	// The destination to send the filtered events to.
	//
	// For example, a Kinesis stream or a Lambda function.
	// Experimental.
	Destination ILogSubscriptionDestination `field:"required" json:"destination" yaml:"destination"`
	// Log events matching this pattern will be sent to the destination.
	// Experimental.
	FilterPattern IFilterPattern `field:"required" json:"filterPattern" yaml:"filterPattern"`
}

Properties for a new SubscriptionFilter created from a LogGroup.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import "github.com/aws/aws-cdk-go/awscdk"

var filterPattern iFilterPattern
var logSubscriptionDestination iLogSubscriptionDestination

subscriptionFilterOptions := &subscriptionFilterOptions{
	destination: logSubscriptionDestination,
	filterPattern: filterPattern,
}

Experimental.

type SubscriptionFilterProps 

type SubscriptionFilterProps struct {
	// The destination to send the filtered events to.
	//
	// For example, a Kinesis stream or a Lambda function.
	// Experimental.
	Destination ILogSubscriptionDestination `field:"required" json:"destination" yaml:"destination"`
	// Log events matching this pattern will be sent to the destination.
	// Experimental.
	FilterPattern IFilterPattern `field:"required" json:"filterPattern" yaml:"filterPattern"`
	// The log group to create the subscription on.
	// Experimental.
	LogGroup ILogGroup `field:"required" json:"logGroup" yaml:"logGroup"`
}

Properties for a SubscriptionFilter.

Example: 

import destinations "github.com/aws/aws-cdk-go/awscdk"
var fn function
var logGroup logGroup

logs.NewSubscriptionFilter(this, jsii.String("Subscription"), &subscriptionFilterProps{
	logGroup: logGroup,
	destination: destinations.NewLambdaDestination(fn),
	filterPattern: logs.filterPattern.allTerms(jsii.String("ERROR"), jsii.String("MainThread")),
})

Experimental.

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