triggers

package
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 Go to latest Published: Aug 9, 2022 License: Apache-2.0 Imports: 15 Imported by: 0

README

Triggers

Triggers allows you to execute code during deployments. This can be used for a variety of use cases such as:

  • Self tests: validate something after a resource/construct been provisioned
  • Data priming: add initial data to resources after they are created
  • Preconditions: check things such as account limits or external dependencies before deployment.

Usage

The TriggerFunction construct will define an AWS Lambda function which is triggered during deployment:

// Example automatically generated from non-compiling source. May contain errors.
import lambda "github.com/aws/aws-cdk-go/awscdk"
import triggers "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var stack stack


triggers.NewTriggerFunction(stack, jsii.String("MyTrigger"), &triggerFunctionProps{
	runtime: lambda.runtime_NODEJS_12_X(),
	handler: jsii.String("index.handler"),
	code: lambda.code.fromAsset(jsii.String(__dirname + "/my-trigger")),
})

In the above example, the AWS Lambda function defined in myLambdaFunction will be invoked when the stack is deployed.

Trigger Failures

If the trigger handler fails (e.g. an exception is raised), the CloudFormation deployment will fail, as if a resource failed to provision. This makes it easy to implement "self tests" via triggers by simply making a set of assertions on some provisioned infrastructure.

Order of Execution

By default, a trigger will be executed by CloudFormation after the associated handler is provisioned. This means that if the handler takes an implicit dependency on other resources (e.g. via environment variables), those resources will be provisioned before the trigger is executed.

In most cases, implicit ordering should be sufficient, but you can also use executeAfter and executeBefore to control the order of execution.

The following example defines the following order: (hello, world) => myTrigger => goodbye. The resources under hello and world will be provisioned in parallel, and then the trigger myTrigger will be executed. Only then the resources under goodbye will be provisioned:

// Example automatically generated from non-compiling source. May contain errors.
import "github.com/aws/constructs-go/constructs"
import triggers "github.com/aws/aws-cdk-go/awscdk"

var myTrigger trigger
var hello construct
var world construct
var goodbye construct


myTrigger.executeAfter(hello, world)
myTrigger.executeBefore(goodbye)

Note that hello and world are construct scopes. This means that they can be specific resources (such as an s3.Bucket object) or groups of resources composed together into constructs.

Re-execution of Triggers

By default, executeOnHandlerChange is enabled. This implies that the trigger is re-executed every time the handler function code or configuration changes. If this option is disabled, the trigger will be executed only once upon first deployment.

In the future we will consider adding support for additional re-execution modes:

  • executeOnEveryDeployment: boolean - re-executes every time the stack is deployed (add random "salt" during synthesis).
  • executeOnResourceChange: Construct[] - re-executes when one of the resources under the specified scopes has changed (add the hash the CloudFormation resource specs).

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func NewTriggerFunction_Override 

func NewTriggerFunction_Override(t TriggerFunction, scope constructs.Construct, id *string, props *TriggerFunctionProps)

Experimental.

func NewTrigger_Override 

func NewTrigger_Override(t Trigger, scope constructs.Construct, id *string, props *TriggerProps)

Experimental.

func TriggerFunction_ClassifyVersionProperty 

func TriggerFunction_ClassifyVersionProperty(propertyName *string, locked *bool)

Record whether specific properties in the `AWS::Lambda::Function` resource should also be associated to the Version resource.

See 'currentVersion' section in the module README for more details. Experimental.

func TriggerFunction_FromFunctionArn 

func TriggerFunction_FromFunctionArn(scope constructs.Construct, id *string, functionArn *string) awslambda.IFunction

Import a lambda function into the CDK using its ARN. Experimental.

func TriggerFunction_FromFunctionAttributes 

func TriggerFunction_FromFunctionAttributes(scope constructs.Construct, id *string, attrs *awslambda.FunctionAttributes) awslambda.IFunction

Creates a Lambda function object which represents a function not defined within this stack. Experimental.

func TriggerFunction_FromFunctionName 

func TriggerFunction_FromFunctionName(scope constructs.Construct, id *string, functionName *string) awslambda.IFunction

Import a lambda function into the CDK using its name. Experimental.

func TriggerFunction_IsConstruct 

func TriggerFunction_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func TriggerFunction_IsResource 

func TriggerFunction_IsResource(construct awscdk.IConstruct) *bool

Check whether the given construct is a Resource. Experimental.

func TriggerFunction_MetricAll 

func TriggerFunction_MetricAll(metricName *string, props *awscloudwatch.MetricOptions) awscloudwatch.Metric

Return the given named metric for this Lambda. Experimental.

func TriggerFunction_MetricAllConcurrentExecutions 

func TriggerFunction_MetricAllConcurrentExecutions(props *awscloudwatch.MetricOptions) awscloudwatch.Metric

Metric for the number of concurrent executions across all Lambdas. Experimental.

func TriggerFunction_MetricAllDuration 

func TriggerFunction_MetricAllDuration(props *awscloudwatch.MetricOptions) awscloudwatch.Metric

Metric for the Duration executing all Lambdas. Experimental.

func TriggerFunction_MetricAllErrors 

func TriggerFunction_MetricAllErrors(props *awscloudwatch.MetricOptions) awscloudwatch.Metric

Metric for the number of Errors executing all Lambdas. Experimental.

func TriggerFunction_MetricAllInvocations 

func TriggerFunction_MetricAllInvocations(props *awscloudwatch.MetricOptions) awscloudwatch.Metric

Metric for the number of invocations of all Lambdas. Experimental.

func TriggerFunction_MetricAllThrottles 

func TriggerFunction_MetricAllThrottles(props *awscloudwatch.MetricOptions) awscloudwatch.Metric

Metric for the number of throttled invocations of all Lambdas. Experimental.

func TriggerFunction_MetricAllUnreservedConcurrentExecutions 

func TriggerFunction_MetricAllUnreservedConcurrentExecutions(props *awscloudwatch.MetricOptions) awscloudwatch.Metric

Metric for the number of unreserved concurrent executions across all Lambdas. Experimental.

func Trigger_IsConstruct 

func Trigger_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

Types

type ITrigger 

type ITrigger interface {
	awscdk.IConstruct
	// Adds trigger dependencies.
	//
	// Execute this trigger only after these construct
	// scopes have been provisioned.
	// Experimental.
	ExecuteAfter(scopes ...constructs.Construct)
	// Adds this trigger as a dependency on other constructs.
	//
	// This means that this
	// trigger will get executed *before* the given construct(s).
	// Experimental.
	ExecuteBefore(scopes ...constructs.Construct)
}

Interface for triggers. Experimental.

type Trigger 

type Trigger interface {
	awscdk.Construct
	ITrigger
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Adds trigger dependencies.
	//
	// Execute this trigger only after these construct
	// scopes have been provisioned.
	// Experimental.
	ExecuteAfter(scopes ...constructs.Construct)
	// Adds this trigger as a dependency on other constructs.
	//
	// This means that this
	// trigger will get executed *before* the given construct(s).
	// Experimental.
	ExecuteBefore(scopes ...constructs.Construct)
	// 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
}

Triggers an AWS Lambda function during deployment.

Example: 

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

var construct construct
var function_ function

trigger := awscdk.Triggers.NewTrigger(this, jsii.String("MyTrigger"), &triggerProps{
	handler: function_,

	// the properties below are optional
	executeAfter: []*construct{
		construct,
	},
	executeBefore: []*construct{
		construct,
	},
	executeOnHandlerChange: jsii.Boolean(false),
})

Experimental.

func NewTrigger 

func NewTrigger(scope constructs.Construct, id *string, props *TriggerProps) Trigger

Experimental.

type TriggerFunction 

type TriggerFunction interface {
	awslambda.Function
	ITrigger
	// The architecture of this Lambda Function (this is an optional attribute and defaults to X86_64).
	// Experimental.
	Architecture() awslambda.Architecture
	// Whether the addPermission() call adds any permissions.
	//
	// True for new Lambdas, false for version $LATEST and imported Lambdas
	// from different accounts.
	// Experimental.
	CanCreatePermissions() *bool
	// Access the Connections object.
	//
	// Will fail if not a VPC-enabled Lambda Function.
	// Experimental.
	Connections() awsec2.Connections
	// Returns a `lambda.Version` which represents the current version of this Lambda function. A new version will be created every time the function's configuration changes.
	//
	// You can specify options for this version using the `currentVersionOptions`
	// prop when initializing the `lambda.Function`.
	// Experimental.
	CurrentVersion() awslambda.Version
	// The DLQ (as queue) associated with this Lambda Function (this is an optional attribute).
	// Experimental.
	DeadLetterQueue() awssqs.IQueue
	// The DLQ (as topic) associated with this Lambda Function (this is an optional attribute).
	// Experimental.
	DeadLetterTopic() awssns.ITopic
	// The environment this resource belongs to.
	//
	// For resources that are created and managed by the CDK
	// (generally, those created by creating new class instances like Role, Bucket, etc.),
	// this is always the same as the environment of the stack they belong to;
	// however, for imported resources
	// (those obtained from static methods like fromRoleArn, fromBucketName, etc.),
	// that might be different than the stack they were imported into.
	// Experimental.
	Env() *awscdk.ResourceEnvironment
	// ARN of this function.
	// Experimental.
	FunctionArn() *string
	// Name of this function.
	// Experimental.
	FunctionName() *string
	// The principal this Lambda Function is running as.
	// Experimental.
	GrantPrincipal() awsiam.IPrincipal
	// Whether or not this Lambda function was bound to a VPC.
	//
	// If this is is `false`, trying to access the `connections` object will fail.
	// Experimental.
	IsBoundToVpc() *bool
	// The `$LATEST` version of this function.
	//
	// Note that this is reference to a non-specific AWS Lambda version, which
	// means the function this version refers to can return different results in
	// different invocations.
	//
	// To obtain a reference to an explicit version which references the current
	// function configuration, use `lambdaFunction.currentVersion` instead.
	// Experimental.
	LatestVersion() awslambda.IVersion
	// The LogGroup where the Lambda function's logs are made available.
	//
	// If either `logRetention` is set or this property is called, a CloudFormation custom resource is added to the stack that
	// pre-creates the log group as part of the stack deployment, if it already doesn't exist, and sets the correct log retention
	// period (never expire, by default).
	//
	// Further, if the log group already exists and the `logRetention` is not set, the custom resource will reset the log retention
	// to never expire even if it was configured with a different value.
	// Experimental.
	LogGroup() awslogs.ILogGroup
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// The construct node where permissions are attached.
	// Experimental.
	PermissionsNode() 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 ARN(s) to put into the resource field of the generated IAM policy for grantInvoke().
	// Experimental.
	ResourceArnsForGrantInvoke() *[]*string
	// Execution role associated with this function.
	// Experimental.
	Role() awsiam.IRole
	// The runtime configured for this lambda.
	// Experimental.
	Runtime() awslambda.Runtime
	// The stack in which this resource is defined.
	// Experimental.
	Stack() awscdk.Stack
	// The timeout configured for this lambda.
	// Experimental.
	Timeout() awscdk.Duration
	// The underlying trigger resource.
	// Experimental.
	Trigger() Trigger
	// Defines an alias for this function.
	//
	// The alias will automatically be updated to point to the latest version of
	// the function as it is being updated during a deployment.
	//
	// “`ts
	// declare const fn: lambda.Function;
	//
	// fn.addAlias('Live');
	//
	// // Is equivalent to
	//
	// new lambda.Alias(this, 'AliasLive', {
	//    aliasName: 'Live',
	//    version: fn.currentVersion,
	// });.
	// Experimental.
	AddAlias(aliasName *string, options *awslambda.AliasOptions) awslambda.Alias
	// Adds an environment variable to this Lambda function.
	//
	// If this is a ref to a Lambda function, this operation results in a no-op.
	// Experimental.
	AddEnvironment(key *string, value *string, options *awslambda.EnvironmentOptions) awslambda.Function
	// Adds an event source to this function.
	//
	// Event sources are implemented in the @aws-cdk/aws-lambda-event-sources module.
	//
	// The following example adds an SQS Queue as an event source:
	// “`
	// import { SqsEventSource } from '@aws-cdk/aws-lambda-event-sources';
	// myFunction.addEventSource(new SqsEventSource(myQueue));
	// “`.
	// Experimental.
	AddEventSource(source awslambda.IEventSource)
	// Adds an event source that maps to this AWS Lambda function.
	// Experimental.
	AddEventSourceMapping(id *string, options *awslambda.EventSourceMappingOptions) awslambda.EventSourceMapping
	// Adds a url to this lambda function.
	// Experimental.
	AddFunctionUrl(options *awslambda.FunctionUrlOptions) awslambda.FunctionUrl
	// Adds one or more Lambda Layers to this Lambda function.
	// Experimental.
	AddLayers(layers ...awslambda.ILayerVersion)
	// Adds a permission to the Lambda resource policy.
	// See: Permission for details.
	//
	// Experimental.
	AddPermission(id *string, permission *awslambda.Permission)
	// Adds a statement to the IAM role assumed by the instance.
	// Experimental.
	AddToRolePolicy(statement awsiam.PolicyStatement)
	// Add a new version for this Lambda.
	//
	// If you want to deploy through CloudFormation and use aliases, you need to
	// add a new version (with a new name) to your Lambda every time you want to
	// deploy an update. An alias can then refer to the newly created Version.
	//
	// All versions should have distinct names, and you should not delete versions
	// as long as your Alias needs to refer to them.
	//
	// Returns: A new Version object.
	// Deprecated: This method will create an AWS::Lambda::Version resource which
	// snapshots the AWS Lambda function *at the time of its creation* and it
	// won't get updated when the function changes. Instead, use
	// `this.currentVersion` to obtain a reference to a version resource that gets
	// automatically recreated when the function configuration (or code) changes.
	AddVersion(name *string, codeSha256 *string, description *string, provisionedExecutions *float64, asyncInvokeConfig *awslambda.EventInvokeConfigOptions) awslambda.Version
	// 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)
	// Configures options for asynchronous invocation.
	// Experimental.
	ConfigureAsyncInvoke(options *awslambda.EventInvokeConfigOptions)
	// A warning will be added to functions under the following conditions: - permissions that include `lambda:InvokeFunction` are added to the unqualified function.
	//
	// - function.currentVersion is invoked before or after the permission is created.
	//
	// This applies only to permissions on Lambda functions, not versions or aliases.
	// This function is overridden as a noOp for QualifiedFunctionBase.
	// Experimental.
	ConsiderWarningOnInvokeFunctionPermissions(scope awscdk.Construct, action *string)
	// Adds trigger dependencies.
	//
	// Execute this trigger only after these construct
	// scopes have been provisioned.
	// Experimental.
	ExecuteAfter(scopes ...constructs.Construct)
	// Adds this trigger as a dependency on other constructs.
	//
	// This means that this
	// trigger will get executed *before* the given construct(s).
	// Experimental.
	ExecuteBefore(scopes ...constructs.Construct)
	// 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
	// Grant the given identity permissions to invoke this Lambda.
	// Experimental.
	GrantInvoke(grantee awsiam.IGrantable) awsiam.Grant
	// Grant the given identity permissions to invoke this Lambda Function URL.
	// Experimental.
	GrantInvokeUrl(grantee awsiam.IGrantable) awsiam.Grant
	// Return the given named metric for this Function.
	// Experimental.
	Metric(metricName *string, props *awscloudwatch.MetricOptions) awscloudwatch.Metric
	// How long execution of this Lambda takes.
	//
	// Average over 5 minutes.
	// Experimental.
	MetricDuration(props *awscloudwatch.MetricOptions) awscloudwatch.Metric
	// How many invocations of this Lambda fail.
	//
	// Sum over 5 minutes.
	// Experimental.
	MetricErrors(props *awscloudwatch.MetricOptions) awscloudwatch.Metric
	// How often this Lambda is invoked.
	//
	// Sum over 5 minutes.
	// Experimental.
	MetricInvocations(props *awscloudwatch.MetricOptions) awscloudwatch.Metric
	// How often this Lambda is throttled.
	//
	// Sum over 5 minutes.
	// Experimental.
	MetricThrottles(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
	// Experimental.
	WarnInvokeFunctionPermissions(scope awscdk.Construct)
}

Invokes an AWS Lambda function during deployment.

Example: 

// Example automatically generated from non-compiling source. May contain errors.
import lambda "github.com/aws/aws-cdk-go/awscdk"
import triggers "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var stack stack

triggers.NewTriggerFunction(stack, jsii.String("MyTrigger"), &triggerFunctionProps{
	runtime: lambda.runtime_NODEJS_12_X(),
	handler: jsii.String("index.handler"),
	code: lambda.code.fromAsset(jsii.String(__dirname + "/my-trigger")),
})

Experimental.

func NewTriggerFunction 

func NewTriggerFunction(scope constructs.Construct, id *string, props *TriggerFunctionProps) TriggerFunction

Experimental.

type TriggerFunctionProps 

type TriggerFunctionProps struct {
	// The maximum age of a request that Lambda sends to a function for processing.
	//
	// Minimum: 60 seconds
	// Maximum: 6 hours.
	// Experimental.
	MaxEventAge awscdk.Duration `field:"optional" json:"maxEventAge" yaml:"maxEventAge"`
	// The destination for failed invocations.
	// Experimental.
	OnFailure awslambda.IDestination `field:"optional" json:"onFailure" yaml:"onFailure"`
	// The destination for successful invocations.
	// Experimental.
	OnSuccess awslambda.IDestination `field:"optional" json:"onSuccess" yaml:"onSuccess"`
	// The maximum number of times to retry when the function returns an error.
	//
	// Minimum: 0
	// Maximum: 2.
	// Experimental.
	RetryAttempts *float64 `field:"optional" json:"retryAttempts" yaml:"retryAttempts"`
	// Whether to allow the Lambda to send all network traffic.
	//
	// If set to false, you must individually add traffic rules to allow the
	// Lambda to connect to network targets.
	// Experimental.
	AllowAllOutbound *bool `field:"optional" json:"allowAllOutbound" yaml:"allowAllOutbound"`
	// Lambda Functions in a public subnet can NOT access the internet.
	//
	// Use this property to acknowledge this limitation and still place the function in a public subnet.
	// See: https://stackoverflow.com/questions/52992085/why-cant-an-aws-lambda-function-inside-a-public-subnet-in-a-vpc-connect-to-the/52994841#52994841
	//
	// Experimental.
	AllowPublicSubnet *bool `field:"optional" json:"allowPublicSubnet" yaml:"allowPublicSubnet"`
	// The system architectures compatible with this lambda function.
	// Experimental.
	Architecture awslambda.Architecture `field:"optional" json:"architecture" yaml:"architecture"`
	// DEPRECATED.
	// Deprecated: use `architecture`.
	Architectures *[]awslambda.Architecture `field:"optional" json:"architectures" yaml:"architectures"`
	// Code signing config associated with this function.
	// Experimental.
	CodeSigningConfig awslambda.ICodeSigningConfig `field:"optional" json:"codeSigningConfig" yaml:"codeSigningConfig"`
	// Options for the `lambda.Version` resource automatically created by the `fn.currentVersion` method.
	// Experimental.
	CurrentVersionOptions *awslambda.VersionOptions `field:"optional" json:"currentVersionOptions" yaml:"currentVersionOptions"`
	// The SQS queue to use if DLQ is enabled.
	//
	// If SNS topic is desired, specify `deadLetterTopic` property instead.
	// Experimental.
	DeadLetterQueue awssqs.IQueue `field:"optional" json:"deadLetterQueue" yaml:"deadLetterQueue"`
	// Enabled DLQ.
	//
	// If `deadLetterQueue` is undefined,
	// an SQS queue with default options will be defined for your Function.
	// Experimental.
	DeadLetterQueueEnabled *bool `field:"optional" json:"deadLetterQueueEnabled" yaml:"deadLetterQueueEnabled"`
	// The SNS topic to use as a DLQ.
	//
	// Note that if `deadLetterQueueEnabled` is set to `true`, an SQS queue will be created
	// rather than an SNS topic. Using an SNS topic as a DLQ requires this property to be set explicitly.
	// Experimental.
	DeadLetterTopic awssns.ITopic `field:"optional" json:"deadLetterTopic" yaml:"deadLetterTopic"`
	// A description of the function.
	// Experimental.
	Description *string `field:"optional" json:"description" yaml:"description"`
	// Key-value pairs that Lambda caches and makes available for your Lambda functions.
	//
	// Use environment variables to apply configuration changes, such
	// as test and production environment configurations, without changing your
	// Lambda function source code.
	// Experimental.
	Environment *map[string]*string `field:"optional" json:"environment" yaml:"environment"`
	// The AWS KMS key that's used to encrypt your function's environment variables.
	// Experimental.
	EnvironmentEncryption awskms.IKey `field:"optional" json:"environmentEncryption" yaml:"environmentEncryption"`
	// The size of the function’s /tmp directory in MiB.
	// Experimental.
	EphemeralStorageSize awscdk.Size `field:"optional" json:"ephemeralStorageSize" yaml:"ephemeralStorageSize"`
	// Event sources for this function.
	//
	// You can also add event sources using `addEventSource`.
	// Experimental.
	Events *[]awslambda.IEventSource `field:"optional" json:"events" yaml:"events"`
	// The filesystem configuration for the lambda function.
	// Experimental.
	Filesystem awslambda.FileSystem `field:"optional" json:"filesystem" yaml:"filesystem"`
	// A name for the function.
	// Experimental.
	FunctionName *string `field:"optional" json:"functionName" yaml:"functionName"`
	// Initial policy statements to add to the created Lambda Role.
	//
	// You can call `addToRolePolicy` to the created lambda to add statements post creation.
	// Experimental.
	InitialPolicy *[]awsiam.PolicyStatement `field:"optional" json:"initialPolicy" yaml:"initialPolicy"`
	// Specify the version of CloudWatch Lambda insights to use for monitoring.
	// See: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Lambda-Insights-Getting-Started-docker.html
	//
	// Experimental.
	InsightsVersion awslambda.LambdaInsightsVersion `field:"optional" json:"insightsVersion" yaml:"insightsVersion"`
	// A list of layers to add to the function's execution environment.
	//
	// You can configure your Lambda function to pull in
	// additional code during initialization in the form of layers. Layers are packages of libraries or other dependencies
	// that can be used by multiple functions.
	// Experimental.
	Layers *[]awslambda.ILayerVersion `field:"optional" json:"layers" yaml:"layers"`
	// The number of days log events are kept in CloudWatch Logs.
	//
	// When updating
	// this property, unsetting it doesn't remove the log retention policy. To
	// remove the retention policy, set the value to `INFINITE`.
	// Experimental.
	LogRetention awslogs.RetentionDays `field:"optional" json:"logRetention" yaml:"logRetention"`
	// When log retention is specified, a custom resource attempts to create the CloudWatch log group.
	//
	// These options control the retry policy when interacting with CloudWatch APIs.
	// Experimental.
	LogRetentionRetryOptions *awslambda.LogRetentionRetryOptions `field:"optional" json:"logRetentionRetryOptions" yaml:"logRetentionRetryOptions"`
	// The IAM role for the Lambda function associated with the custom resource that sets the retention policy.
	// Experimental.
	LogRetentionRole awsiam.IRole `field:"optional" json:"logRetentionRole" yaml:"logRetentionRole"`
	// The amount of memory, in MB, that is allocated to your Lambda function.
	//
	// Lambda uses this value to proportionally allocate the amount of CPU
	// power. For more information, see Resource Model in the AWS Lambda
	// Developer Guide.
	// Experimental.
	MemorySize *float64 `field:"optional" json:"memorySize" yaml:"memorySize"`
	// Enable profiling.
	// See: https://docs.aws.amazon.com/codeguru/latest/profiler-ug/setting-up-lambda.html
	//
	// Experimental.
	Profiling *bool `field:"optional" json:"profiling" yaml:"profiling"`
	// Profiling Group.
	// See: https://docs.aws.amazon.com/codeguru/latest/profiler-ug/setting-up-lambda.html
	//
	// Experimental.
	ProfilingGroup awscodeguruprofiler.IProfilingGroup `field:"optional" json:"profilingGroup" yaml:"profilingGroup"`
	// The maximum of concurrent executions you want to reserve for the function.
	// See: https://docs.aws.amazon.com/lambda/latest/dg/concurrent-executions.html
	//
	// Experimental.
	ReservedConcurrentExecutions *float64 `field:"optional" json:"reservedConcurrentExecutions" yaml:"reservedConcurrentExecutions"`
	// Lambda execution role.
	//
	// This is the role that will be assumed by the function upon execution.
	// It controls the permissions that the function will have. The Role must
	// be assumable by the 'lambda.amazonaws.com' service principal.
	//
	// The default Role automatically has permissions granted for Lambda execution. If you
	// provide a Role, you must add the relevant AWS managed policies yourself.
	//
	// The relevant managed policies are "service-role/AWSLambdaBasicExecutionRole" and
	// "service-role/AWSLambdaVPCAccessExecutionRole".
	// Experimental.
	Role awsiam.IRole `field:"optional" json:"role" yaml:"role"`
	// What security group to associate with the Lambda's network interfaces. This property is being deprecated, consider using securityGroups instead.
	//
	// Only used if 'vpc' is supplied.
	//
	// Use securityGroups property instead.
	// Function constructor will throw an error if both are specified.
	// Deprecated: - This property is deprecated, use securityGroups instead.
	SecurityGroup awsec2.ISecurityGroup `field:"optional" json:"securityGroup" yaml:"securityGroup"`
	// The list of security groups to associate with the Lambda's network interfaces.
	//
	// Only used if 'vpc' is supplied.
	// Experimental.
	SecurityGroups *[]awsec2.ISecurityGroup `field:"optional" json:"securityGroups" yaml:"securityGroups"`
	// The function execution time (in seconds) after which Lambda terminates the function.
	//
	// Because the execution time affects cost, set this value
	// based on the function's expected execution time.
	// Experimental.
	Timeout awscdk.Duration `field:"optional" json:"timeout" yaml:"timeout"`
	// Enable AWS X-Ray Tracing for Lambda Function.
	// Experimental.
	Tracing awslambda.Tracing `field:"optional" json:"tracing" yaml:"tracing"`
	// VPC network to place Lambda network interfaces.
	//
	// Specify this if the Lambda function needs to access resources in a VPC.
	// Experimental.
	Vpc awsec2.IVpc `field:"optional" json:"vpc" yaml:"vpc"`
	// Where to place the network interfaces within the VPC.
	//
	// Only used if 'vpc' is supplied. Note: internet access for Lambdas
	// requires a NAT gateway, so picking Public subnets is not allowed.
	// Experimental.
	VpcSubnets *awsec2.SubnetSelection `field:"optional" json:"vpcSubnets" yaml:"vpcSubnets"`
	// The source code of your Lambda function.
	//
	// You can point to a file in an
	// Amazon Simple Storage Service (Amazon S3) bucket or specify your source
	// code as inline text.
	// Experimental.
	Code awslambda.Code `field:"required" json:"code" yaml:"code"`
	// The name of the method within your code that Lambda calls to execute your function.
	//
	// The format includes the file name. It can also include
	// namespaces and other qualifiers, depending on the runtime.
	// For more information, see https://docs.aws.amazon.com/lambda/latest/dg/gettingstarted-features.html#gettingstarted-features-programmingmodel.
	//
	// Use `Handler.FROM_IMAGE` when defining a function from a Docker image.
	//
	// NOTE: If you specify your source code as inline text by specifying the
	// ZipFile property within the Code property, specify index.function_name as
	// the handler.
	// Experimental.
	Handler *string `field:"required" json:"handler" yaml:"handler"`
	// The runtime environment for the Lambda function that you are uploading.
	//
	// For valid values, see the Runtime property in the AWS Lambda Developer
	// Guide.
	//
	// Use `Runtime.FROM_IMAGE` when when defining a function from a Docker image.
	// Experimental.
	Runtime awslambda.Runtime `field:"required" json:"runtime" yaml:"runtime"`
	// Adds trigger dependencies. Execute this trigger only after these construct scopes have been provisioned.
	//
	// You can also use `trigger.executeAfter()` to add additional dependencies.
	// Experimental.
	ExecuteAfter *[]constructs.Construct `field:"optional" json:"executeAfter" yaml:"executeAfter"`
	// Adds this trigger as a dependency on other constructs.
	//
	// This means that this
	// trigger will get executed *before* the given construct(s).
	//
	// You can also use `trigger.executeBefore()` to add additional dependants.
	// Experimental.
	ExecuteBefore *[]constructs.Construct `field:"optional" json:"executeBefore" yaml:"executeBefore"`
	// Re-executes the trigger every time the handler changes.
	//
	// This implies that the trigger is associated with the `currentVersion` of
	// the handler, which gets recreated every time the handler or its
	// configuration is updated.
	// Experimental.
	ExecuteOnHandlerChange *bool `field:"optional" json:"executeOnHandlerChange" yaml:"executeOnHandlerChange"`
}

Props for `InvokeFunction`.

Example: 

// Example automatically generated from non-compiling source. May contain errors.
import lambda "github.com/aws/aws-cdk-go/awscdk"
import triggers "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var stack stack

triggers.NewTriggerFunction(stack, jsii.String("MyTrigger"), &triggerFunctionProps{
	runtime: lambda.runtime_NODEJS_12_X(),
	handler: jsii.String("index.handler"),
	code: lambda.code.fromAsset(jsii.String(__dirname + "/my-trigger")),
})

Experimental.

type TriggerInvalidation 

type TriggerInvalidation string

Determines. Experimental. 

const (
	// The trigger will be executed every time the handler (or its configuration) changes.
	//
	// This is implemented by associated the trigger with the `currentVersion`
	// of the AWS Lambda function, which gets recreated every time the handler changes.
	// Experimental.
	TriggerInvalidation_HANDLER_CHANGE TriggerInvalidation = "HANDLER_CHANGE"
)

type TriggerOptions 

type TriggerOptions struct {
	// Adds trigger dependencies. Execute this trigger only after these construct scopes have been provisioned.
	//
	// You can also use `trigger.executeAfter()` to add additional dependencies.
	// Experimental.
	ExecuteAfter *[]constructs.Construct `field:"optional" json:"executeAfter" yaml:"executeAfter"`
	// Adds this trigger as a dependency on other constructs.
	//
	// This means that this
	// trigger will get executed *before* the given construct(s).
	//
	// You can also use `trigger.executeBefore()` to add additional dependants.
	// Experimental.
	ExecuteBefore *[]constructs.Construct `field:"optional" json:"executeBefore" yaml:"executeBefore"`
	// Re-executes the trigger every time the handler changes.
	//
	// This implies that the trigger is associated with the `currentVersion` of
	// the handler, which gets recreated every time the handler or its
	// configuration is updated.
	// Experimental.
	ExecuteOnHandlerChange *bool `field:"optional" json:"executeOnHandlerChange" yaml:"executeOnHandlerChange"`
}

Options for `Trigger`.

Example: 

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

var construct construct

triggerOptions := &triggerOptions{
	executeAfter: []*construct{
		construct,
	},
	executeBefore: []*construct{
		construct,
	},
	executeOnHandlerChange: jsii.Boolean(false),
}

Experimental.

type TriggerProps 

type TriggerProps struct {
	// Adds trigger dependencies. Execute this trigger only after these construct scopes have been provisioned.
	//
	// You can also use `trigger.executeAfter()` to add additional dependencies.
	// Experimental.
	ExecuteAfter *[]constructs.Construct `field:"optional" json:"executeAfter" yaml:"executeAfter"`
	// Adds this trigger as a dependency on other constructs.
	//
	// This means that this
	// trigger will get executed *before* the given construct(s).
	//
	// You can also use `trigger.executeBefore()` to add additional dependants.
	// Experimental.
	ExecuteBefore *[]constructs.Construct `field:"optional" json:"executeBefore" yaml:"executeBefore"`
	// Re-executes the trigger every time the handler changes.
	//
	// This implies that the trigger is associated with the `currentVersion` of
	// the handler, which gets recreated every time the handler or its
	// configuration is updated.
	// Experimental.
	ExecuteOnHandlerChange *bool `field:"optional" json:"executeOnHandlerChange" yaml:"executeOnHandlerChange"`
	// The AWS Lambda function of the handler to execute.
	// Experimental.
	Handler awslambda.Function `field:"required" json:"handler" yaml:"handler"`
}

Props for `Trigger`.

Example: 

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

var construct construct
var function_ function

triggerProps := &triggerProps{
	handler: function_,

	// the properties below are optional
	executeAfter: []*construct{
		construct,
	},
	executeBefore: []*construct{
		construct,
	},
	executeOnHandlerChange: jsii.Boolean(false),
}

Experimental.

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