endpoints

package
v0.4.0 Latest Latest
Warning

This package is not in the latest version of its module.

Go to latest
Published: May 26, 2018 License: Apache-2.0 Imports: 8 Imported by: 0

Documentation

Overview

Package endpoints provides the types and functionality for defining regions and endpoints, as well as querying those definitions.

The SDK's Regions and Endpoints metadata is code generated into the endpoints package, and is accessible via the DefaultResolver function. This function returns a endpoint Resolver will search the metadata and build an associated endpoint if one is found. The default resolver will search all partitions known by the SDK. e.g AWS Standard (aws), AWS China (aws-cn), and AWS GovCloud (US) (aws-us-gov). .

Enumerating Regions and Endpoint Metadata

Casting the Resolver returned by DefaultResolver to a EnumPartitions interface will allow you to get access to the list of underlying Partitions with the Partitions method. This is helpful if you want to limit the SDK's endpoint resolving to a single partition, or enumerate regions, services, and endpoints in the partition.

resolver := endpoints.NewDefaultResolver()
partitions := resolver.Partitions()

for _, p := range partitions {
    fmt.Println("Regions for", p.ID())
    for id, _ := range p.Regions() {
        fmt.Println("*", id)
    }

    fmt.Println("Services for", p.ID())
    for id, _ := range p.Services() {
        fmt.Println("*", id)
    }
}

Using Custom Endpoints

The endpoints package also gives you the ability to use your own logic how endpoints are resolved. This is a great way to define a custom endpoint for select services, without passing that logic down through your code.

If a type implements the Resolver interface it can be used to resolve endpoints. To use this with the SDK's Session and Config set the value of the type to the EndpointsResolver field of aws.Config when initializing the service client.

In addition the ResolverFunc is a wrapper for a func matching the signature of Resolver.ResolveEndpoint, converting it to a type that satisfies the Resolver interface.

defaultResolver := endpoints.NewDefaultResolver()
myCustomResolver := func(service, region string) (aws.Endpoint, error) {
    if service == endpoints.S3ServiceID {
        return aws.Endpoint{
            URL:           "s3.custom.endpoint.com",
            SigningRegion: "custom-signing-region",
        }, nil
    }

    return defaultResolver.ResolveEndpoint(service, region)
}

cfg, err := external.LoadDefaultAWSConfig()
if err != nil {
    panic(err)
}
cfg.Region = "us-west-2"
cfg.EndpointResolver = aws.EndpointResolverFunc(myCustomResolver)

Index

Examples

Constants

View Source
const (
	AwsPartitionID      = "aws"        // AWS Standard partition.
	AwsCnPartitionID    = "aws-cn"     // AWS China partition.
	AwsUsGovPartitionID = "aws-us-gov" // AWS GovCloud (US) partition.
)

Partition identifiers

View Source
const (
	ApNortheast1RegionID = "ap-northeast-1" // Asia Pacific (Tokyo).
	ApNortheast2RegionID = "ap-northeast-2" // Asia Pacific (Seoul).
	ApSouth1RegionID     = "ap-south-1"     // Asia Pacific (Mumbai).
	ApSoutheast1RegionID = "ap-southeast-1" // Asia Pacific (Singapore).
	ApSoutheast2RegionID = "ap-southeast-2" // Asia Pacific (Sydney).
	CaCentral1RegionID   = "ca-central-1"   // Canada (Central).
	EuCentral1RegionID   = "eu-central-1"   // EU (Frankfurt).
	EuWest1RegionID      = "eu-west-1"      // EU (Ireland).
	EuWest2RegionID      = "eu-west-2"      // EU (London).
	EuWest3RegionID      = "eu-west-3"      // EU (Paris).
	SaEast1RegionID      = "sa-east-1"      // South America (Sao Paulo).
	UsEast1RegionID      = "us-east-1"      // US East (N. Virginia).
	UsEast2RegionID      = "us-east-2"      // US East (Ohio).
	UsWest1RegionID      = "us-west-1"      // US West (N. California).
	UsWest2RegionID      = "us-west-2"      // US West (Oregon).
)

AWS Standard partition's regions.

View Source
const (
	CnNorth1RegionID     = "cn-north-1"     // China (Beijing).
	CnNorthwest1RegionID = "cn-northwest-1" // China (Ningxia).
)

AWS China partition's regions.

View Source
const (
	A4bServiceID                          = "a4b"                          // A4b.
	AcmServiceID                          = "acm"                          // Acm.
	AcmPcaServiceID                       = "acm-pca"                      // AcmPca.
	ApiPricingServiceID                   = "api.pricing"                  // ApiPricing.
	ApigatewayServiceID                   = "apigateway"                   // Apigateway.
	ApplicationAutoscalingServiceID       = "application-autoscaling"      // ApplicationAutoscaling.
	Appstream2ServiceID                   = "appstream2"                   // Appstream2.
	AthenaServiceID                       = "athena"                       // Athena.
	AutoscalingServiceID                  = "autoscaling"                  // Autoscaling.
	AutoscalingPlansServiceID             = "autoscaling-plans"            // AutoscalingPlans.
	BatchServiceID                        = "batch"                        // Batch.
	BudgetsServiceID                      = "budgets"                      // Budgets.
	CeServiceID                           = "ce"                           // Ce.
	Cloud9ServiceID                       = "cloud9"                       // Cloud9.
	ClouddirectoryServiceID               = "clouddirectory"               // Clouddirectory.
	CloudformationServiceID               = "cloudformation"               // Cloudformation.
	CloudfrontServiceID                   = "cloudfront"                   // Cloudfront.
	CloudhsmServiceID                     = "cloudhsm"                     // Cloudhsm.
	Cloudhsmv2ServiceID                   = "cloudhsmv2"                   // Cloudhsmv2.
	CloudsearchServiceID                  = "cloudsearch"                  // Cloudsearch.
	CloudsearchdomainServiceID            = "cloudsearchdomain"            // Cloudsearchdomain.
	CloudtrailServiceID                   = "cloudtrail"                   // Cloudtrail.
	CodebuildServiceID                    = "codebuild"                    // Codebuild.
	CodecommitServiceID                   = "codecommit"                   // Codecommit.
	CodedeployServiceID                   = "codedeploy"                   // Codedeploy.
	CodepipelineServiceID                 = "codepipeline"                 // Codepipeline.
	CodestarServiceID                     = "codestar"                     // Codestar.
	CognitoIdentityServiceID              = "cognito-identity"             // CognitoIdentity.
	CognitoIdpServiceID                   = "cognito-idp"                  // CognitoIdp.
	CognitoSyncServiceID                  = "cognito-sync"                 // CognitoSync.
	ComprehendServiceID                   = "comprehend"                   // Comprehend.
	ConfigServiceID                       = "config"                       // Config.
	CurServiceID                          = "cur"                          // Cur.
	DataIotServiceID                      = "data.iot"                     // DataIot.
	DatapipelineServiceID                 = "datapipeline"                 // Datapipeline.
	DaxServiceID                          = "dax"                          // Dax.
	DevicefarmServiceID                   = "devicefarm"                   // Devicefarm.
	DirectconnectServiceID                = "directconnect"                // Directconnect.
	DiscoveryServiceID                    = "discovery"                    // Discovery.
	DmsServiceID                          = "dms"                          // Dms.
	DsServiceID                           = "ds"                           // Ds.
	DynamodbServiceID                     = "dynamodb"                     // Dynamodb.
	Ec2ServiceID                          = "ec2"                          // Ec2.
	Ec2metadataServiceID                  = "ec2metadata"                  // Ec2metadata.
	EcrServiceID                          = "ecr"                          // Ecr.
	EcsServiceID                          = "ecs"                          // Ecs.
	ElasticacheServiceID                  = "elasticache"                  // Elasticache.
	ElasticbeanstalkServiceID             = "elasticbeanstalk"             // Elasticbeanstalk.
	ElasticfilesystemServiceID            = "elasticfilesystem"            // Elasticfilesystem.
	ElasticloadbalancingServiceID         = "elasticloadbalancing"         // Elasticloadbalancing.
	ElasticmapreduceServiceID             = "elasticmapreduce"             // Elasticmapreduce.
	ElastictranscoderServiceID            = "elastictranscoder"            // Elastictranscoder.
	EmailServiceID                        = "email"                        // Email.
	EntitlementMarketplaceServiceID       = "entitlement.marketplace"      // EntitlementMarketplace.
	EsServiceID                           = "es"                           // Es.
	EventsServiceID                       = "events"                       // Events.
	FirehoseServiceID                     = "firehose"                     // Firehose.
	FmsServiceID                          = "fms"                          // Fms.
	GameliftServiceID                     = "gamelift"                     // Gamelift.
	GlacierServiceID                      = "glacier"                      // Glacier.
	GlueServiceID                         = "glue"                         // Glue.
	GreengrassServiceID                   = "greengrass"                   // Greengrass.
	GuarddutyServiceID                    = "guardduty"                    // Guardduty.
	HealthServiceID                       = "health"                       // Health.
	IamServiceID                          = "iam"                          // Iam.
	ImportexportServiceID                 = "importexport"                 // Importexport.
	InspectorServiceID                    = "inspector"                    // Inspector.
	IotServiceID                          = "iot"                          // Iot.
	KinesisServiceID                      = "kinesis"                      // Kinesis.
	KinesisanalyticsServiceID             = "kinesisanalytics"             // Kinesisanalytics.
	KinesisvideoServiceID                 = "kinesisvideo"                 // Kinesisvideo.
	KmsServiceID                          = "kms"                          // Kms.
	LambdaServiceID                       = "lambda"                       // Lambda.
	LightsailServiceID                    = "lightsail"                    // Lightsail.
	LogsServiceID                         = "logs"                         // Logs.
	MachinelearningServiceID              = "machinelearning"              // Machinelearning.
	MarketplacecommerceanalyticsServiceID = "marketplacecommerceanalytics" // Marketplacecommerceanalytics.
	MediaconvertServiceID                 = "mediaconvert"                 // Mediaconvert.
	MedialiveServiceID                    = "medialive"                    // Medialive.
	MediapackageServiceID                 = "mediapackage"                 // Mediapackage.
	MediastoreServiceID                   = "mediastore"                   // Mediastore.
	MeteringMarketplaceServiceID          = "metering.marketplace"         // MeteringMarketplace.
	MghServiceID                          = "mgh"                          // Mgh.
	MobileanalyticsServiceID              = "mobileanalytics"              // Mobileanalytics.
	ModelsLexServiceID                    = "models.lex"                   // ModelsLex.
	MonitoringServiceID                   = "monitoring"                   // Monitoring.
	MturkRequesterServiceID               = "mturk-requester"              // MturkRequester.
	OpsworksServiceID                     = "opsworks"                     // Opsworks.
	OpsworksCmServiceID                   = "opsworks-cm"                  // OpsworksCm.
	OrganizationsServiceID                = "organizations"                // Organizations.
	PinpointServiceID                     = "pinpoint"                     // Pinpoint.
	PollyServiceID                        = "polly"                        // Polly.
	RdsServiceID                          = "rds"                          // Rds.
	RedshiftServiceID                     = "redshift"                     // Redshift.
	RekognitionServiceID                  = "rekognition"                  // Rekognition.
	ResourceGroupsServiceID               = "resource-groups"              // ResourceGroups.
	Route53ServiceID                      = "route53"                      // Route53.
	Route53domainsServiceID               = "route53domains"               // Route53domains.
	RuntimeLexServiceID                   = "runtime.lex"                  // RuntimeLex.
	RuntimeSagemakerServiceID             = "runtime.sagemaker"            // RuntimeSagemaker.
	S3ServiceID                           = "s3"                           // S3.
	SagemakerServiceID                    = "sagemaker"                    // Sagemaker.
	SdbServiceID                          = "sdb"                          // Sdb.
	SecretsmanagerServiceID               = "secretsmanager"               // Secretsmanager.
	ServerlessrepoServiceID               = "serverlessrepo"               // Serverlessrepo.
	ServicecatalogServiceID               = "servicecatalog"               // Servicecatalog.
	ServicediscoveryServiceID             = "servicediscovery"             // Servicediscovery.
	ShieldServiceID                       = "shield"                       // Shield.
	SmsServiceID                          = "sms"                          // Sms.
	SnowballServiceID                     = "snowball"                     // Snowball.
	SnsServiceID                          = "sns"                          // Sns.
	SqsServiceID                          = "sqs"                          // Sqs.
	SsmServiceID                          = "ssm"                          // Ssm.
	StatesServiceID                       = "states"                       // States.
	StoragegatewayServiceID               = "storagegateway"               // Storagegateway.
	StreamsDynamodbServiceID              = "streams.dynamodb"             // StreamsDynamodb.
	StsServiceID                          = "sts"                          // Sts.
	SupportServiceID                      = "support"                      // Support.
	SwfServiceID                          = "swf"                          // Swf.
	TaggingServiceID                      = "tagging"                      // Tagging.
	TranslateServiceID                    = "translate"                    // Translate.
	WafServiceID                          = "waf"                          // Waf.
	WafRegionalServiceID                  = "waf-regional"                 // WafRegional.
	WorkdocsServiceID                     = "workdocs"                     // Workdocs.
	WorkmailServiceID                     = "workmail"                     // Workmail.
	WorkspacesServiceID                   = "workspaces"                   // Workspaces.
	XrayServiceID                         = "xray"                         // Xray.
)

Service identifiers

View Source
const (
	UsGovWest1RegionID = "us-gov-west-1" // AWS GovCloud (US).
)

AWS GovCloud (US) partition's regions.

Variables

This section is empty.

Functions

This section is empty.

Types

type DecodeModelOptions

type DecodeModelOptions struct {
	SkipCustomizations bool
}

A DecodeModelOptions are the options for how the endpoints model definition are decoded.

func (*DecodeModelOptions) Set

func (d *DecodeModelOptions) Set(optFns ...func(*DecodeModelOptions))

Set combines all of the option functions together.

type Endpoint

type Endpoint struct {
	// contains filtered or unexported fields
}

A Endpoint provides information about endpoints, and provides the ability to resolve that endpoint for the service, and the region the endpoint represents.

func (Endpoint) ID

func (e Endpoint) ID() string

ID returns the identifier for an endpoint.

func (Endpoint) Resolve

func (e Endpoint) Resolve(opts ResolveOptions) (aws.Endpoint, error)

Resolve resolves an endpoint from the context of a service and region the endpoint represents. See Partition.EndpointFor for usage and errors that can be returned.

func (Endpoint) ServiceID

func (e Endpoint) ServiceID() string

ServiceID returns the identifier the endpoint belongs to.

type Partition

type Partition struct {
	// contains filtered or unexported fields
}

A Partition provides the ability to enumerate the partition's regions and services.

func AwsCnPartition

func AwsCnPartition() Partition

AwsCnPartition returns the Resolver for AWS China.

func AwsPartition

func AwsPartition() Partition

AwsPartition returns the Resolver for AWS Standard.

func AwsUsGovPartition

func AwsUsGovPartition() Partition

AwsUsGovPartition returns the Resolver for AWS GovCloud (US).

func (Partition) Endpoint

func (p Partition) Endpoint(service, region string, opts ResolveOptions) (aws.Endpoint, error)

Endpoint attempts to resolve the endpoint based on service and region. See Options for information on configuring how the endpoint is resolved.

If the service cannot be found in the metadata the endpoint will be resolved based on the parition's endpoint pattern, and service endpoint prefix.

When resolving endpoints you can choose to enable StrictMatching. This will require the provided service and region to be known by the partition. If the endpoint cannot be strictly resolved an error will be returned. This mode is useful to ensure the endpoint resolved is valid. Without StrictMatching enabled the endpoint returned my look valid but may not work. StrictMatching requires the SDK to be updated if you want to take advantage of new regions and services expansions.

Errors that can be returned.

  • UnknownServiceError
  • UnknownEndpointError

func (Partition) ID

func (p Partition) ID() string

ID returns the identifier of the partition.

func (Partition) Regions

func (p Partition) Regions() map[string]Region

Regions returns a map of Regions indexed by their ID. This is useful for enumerating over the regions in a partition.

func (Partition) RegionsForService

func (p Partition) RegionsForService(id string) (map[string]Region, bool)

RegionsForService returns the map of regions for the service id specified. false is returned if the service is not found in the partition.

func (Partition) Resolver

func (p Partition) Resolver() *Resolver

Resolver returns an endpoint resolver for the partitions. Use this to satisfy the SDK's EndpointResolver.

func (Partition) Services

func (p Partition) Services() map[string]Service

Services returns a map of Service indexed by their ID. This is useful for enumerating over the services in a partition.

type Partitions

type Partitions []Partition

Partitions is a slice of paritions describing regions and endpoints

func DefaultPartitions

func DefaultPartitions() Partitions

DefaultPartitions returns a list of the partitions the SDK is bundled with. The available partitions are: AWS Standard, AWS China, and AWS GovCloud (US).

partitions := endpoints.DefaultPartitions
for _, p := range partitions {
    // ... inspect partitions
}

func (Partitions) ForPartition

func (ps Partitions) ForPartition(id string) (Partition, bool)

ForPartition returns the parition with the matching ID passed in.

func (Partitions) ForRegion

func (ps Partitions) ForRegion(id string) (Partition, bool)

ForRegion returns the first partition which includes the region passed in. This includes both known regions and regions which match a pattern supported by the partition which may include regions that are not explicitly known by the partition. Use the Regions method of the returned Partition if explicit support is needed.

type Region

type Region struct {
	// contains filtered or unexported fields
}

A Region provides information about a region, and ability to resolve an endpoint from the context of a region, given a service.

func (Region) Endpoint

func (r Region) Endpoint(service string, opts ResolveOptions) (aws.Endpoint, error)

Endpoint resolves an endpoint from the context of the region given a service. See Partition.EndpointFor for usage and errors that can be returned.

func (Region) ID

func (r Region) ID() string

ID returns the region's identifier.

func (Region) Services

func (r Region) Services() map[string]Service

Services returns a list of all services that are known to be in this region.

type ResolveOptions

type ResolveOptions struct {
	// DisableSSL forces the endpoint to be resolved as HTTP.
	// instead of HTTPS if the service supports it.
	DisableSSL bool

	// Sets the resolver to resolve the endpoint as a dualstack endpoint
	// for the service. If dualstack support for a service is not known and
	// StrictMatching is not enabled a dualstack endpoint for the service will
	// be returned. This endpoint may not be valid. If StrictMatching is
	// enabled only services that are known to support dualstack will return
	// dualstack endpoints.
	UseDualStack bool

	// Enables strict matching of services and regions resolved endpoints.
	// If the partition doesn't enumerate the exact service and region an
	// error will be returned. This option will prevent returning endpoints
	// that look valid, but may not resolve to any real endpoint.
	StrictMatching bool
}

ResolveOptions provide the configuration needed to direct how the endpoints will be resolved.

type Resolver

type Resolver struct {
	ResolveOptions
	// contains filtered or unexported fields
}

A Resolver provides endpoint resolution based on modeled endpoint data.

func DecodeModel

func DecodeModel(r io.Reader, optFns ...func(*DecodeModelOptions)) (*Resolver, error)

DecodeModel unmarshals a Regions and Endpoint model definition file into a endpoint Resolver. If the file format is not supported, or an error occurs when unmarshaling the model an error will be returned.

Casting the return value of this func to a EnumPartitions will allow you to get a list of the partitions in the order the endpoints will be resolved in.

resolver, err := endpoints.DecodeModel(reader)

partitions := resolver.Partitions()
for _, p := range partitions {
    // ... inspect partitions
}

func NewDefaultResolver

func NewDefaultResolver() *Resolver

NewDefaultResolver returns an Endpoint resolver that will be able to resolve endpoints for: AWS Standard, AWS China, and AWS GovCloud (US).

Use DefaultPartitions() to get the list of the default partitions.

func (*Resolver) Partitions

func (r *Resolver) Partitions() Partitions

Partitions returns the partitions that make up the resolver.

Example
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go-v2/aws/endpoints"
)

func main() {
	partitions := endpoints.NewDefaultResolver().Partitions()

	for _, p := range partitions {
		fmt.Println("Regions for", p.ID())
		for id := range p.Regions() {
			fmt.Println("*", id)
		}

		fmt.Println("Services for", p.ID())
		for id := range p.Services() {
			fmt.Println("*", id)
		}
	}
}
Output:

func (*Resolver) ResolveEndpoint

func (r *Resolver) ResolveEndpoint(service, region string) (aws.Endpoint, error)

ResolveEndpoint attempts to resolve an endpoint againsted the modeled endpoint data. If an endpoint is found it will be returned. An error will be returned otherwise.

Searches through the partitions in the order they are defined.

type Service

type Service struct {
	// contains filtered or unexported fields
}

A Service provides information about a service, and ability to resolve an endpoint from the context of a service, given a region.

func (Service) Endpoint

func (s Service) Endpoint(region string, opts ResolveOptions) (aws.Endpoint, error)

Endpoint resolves an endpoint from the context of a service given a region. See Partition.EndpointFor for usage and errors that can be returned.

func (Service) Endpoints

func (s Service) Endpoints() map[string]Endpoint

Endpoints returns a map of Endpoints indexed by their ID for all known endpoints for a service.

A region is the AWS region the service exists in. Whereas a Endpoint is an URL that can be resolved to a instance of a service.

func (Service) ID

func (s Service) ID() string

ID returns the identifier for the service.

func (Service) Regions

func (s Service) Regions() map[string]Region

Regions returns a map of Regions that the service is present in.

A region is the AWS region the service exists in. Whereas a Endpoint is an URL that can be resolved to a instance of a service.

type UnknownEndpointError

type UnknownEndpointError struct {
	Partition string
	Service   string
	Region    string
	Known     []string
	// contains filtered or unexported fields
}

A UnknownEndpointError is returned when in StrictMatching mode and the service is valid, but the region does not resolve to an endpoint. Includes a list of all known endpoints for the service.

func NewUnknownEndpointError

func NewUnknownEndpointError(p, s, r string, known []string) UnknownEndpointError

NewUnknownEndpointError builds and returns UnknownEndpointError.

func (UnknownEndpointError) Error

func (e UnknownEndpointError) Error() string

String returns the string representation of the error.

func (UnknownEndpointError) String

func (e UnknownEndpointError) String() string

String returns the string representation of the error.

type UnknownServiceError

type UnknownServiceError struct {
	Partition string
	Service   string
	Known     []string
	// contains filtered or unexported fields
}

A UnknownServiceError is returned when the service does not resolve to an endpoint. Includes a list of all known services for the partition. Returned when a partition does not support the service.

func NewUnknownServiceError

func NewUnknownServiceError(p, s string, known []string) UnknownServiceError

NewUnknownServiceError builds and returns UnknownServiceError.

func (UnknownServiceError) Error

func (e UnknownServiceError) Error() string

String returns the string representation of the error.

func (UnknownServiceError) String

func (e UnknownServiceError) String() string

String returns the string representation of the error.

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL