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59 lines
2.2 KiB
Go
59 lines
2.2 KiB
Go
// Package ec2rolecreds provides the credentials provider implementation for
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// retrieving AWS credentials from Amazon EC2 Instance Roles via Amazon EC2 IMDS.
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//
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// # Concurrency and caching
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//
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// The Provider is not safe to be used concurrently, and does not provide any
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// caching of credentials retrieved. You should wrap the Provider with a
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// `aws.CredentialsCache` to provide concurrency safety, and caching of
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// credentials.
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//
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// # Loading credentials with the SDK's AWS Config
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//
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// The EC2 Instance role credentials provider will automatically be the resolved
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// credential provider in the credential chain if no other credential provider is
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// resolved first.
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//
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// To explicitly instruct the SDK's credentials resolving to use the EC2 Instance
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// role for credentials, you specify a `credentials_source` property in the config
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// profile the SDK will load.
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//
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// [default]
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// credential_source = Ec2InstanceMetadata
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//
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// # Loading credentials with the Provider directly
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//
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// Another way to use the EC2 Instance role credentials provider is to create it
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// directly and assign it as the credentials provider for an API client.
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//
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// The following example creates a credentials provider for a command, and wraps
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// it with the CredentialsCache before assigning the provider to the Amazon S3 API
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// client's Credentials option.
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//
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// provider := imds.New(imds.Options{})
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//
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// // Create the service client value configured for credentials.
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// svc := s3.New(s3.Options{
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// Credentials: aws.NewCredentialsCache(provider),
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// })
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//
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// If you need more control, you can set the configuration options on the
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// credentials provider using the imds.Options type to configure the EC2 IMDS
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// API Client and ExpiryWindow of the retrieved credentials.
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//
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// provider := imds.New(imds.Options{
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// // See imds.Options type's documentation for more options available.
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// Client: imds.New(Options{
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// HTTPClient: customHTTPClient,
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// }),
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//
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// // Modify how soon credentials expire prior to their original expiry time.
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// ExpiryWindow: 5 * time.Minute,
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// })
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//
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// # EC2 IMDS API Client
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//
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// See the github.com/aws/aws-sdk-go-v2/feature/ec2/imds module for more details on
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// configuring the client, and options available.
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package ec2rolecreds
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