be.wegenenverkeer.rxhttp.aws

Class InstanceCredentialsProvider

java.lang.Object

be.wegenenverkeer.rxhttp.aws.InstanceCredentialsProvider

All Implemented Interfaces:

AwsCredentialsProvider

public class InstanceCredentialsProvider
extends java.lang.Object
implements AwsCredentialsProvider

An AwsCredentialsProvider that retrieves (temporary) credentials from the EC2 instance metadata service.

The provider will retrieve and cache the credentials. Before each invocation of InstanceCredentialsProvier#getAwsCredentials(), the service will check whether the credentials need to be refreshed.

See the Retrieving Security Credentials from Instance Metadata, and AWS Request Signing documentation.

Created by Karel Maesen, Geovise BVBA on 07/02/17.

Constructor Summary

Constructors

Constructor and Description
InstanceCredentialsProvider() Constructs an instance
InstanceCredentialsProvider(java.lang.String roleName) Constructs an instance with the security credentials for the specified IAM role

Method Summary

Modifier and Type	Method and Description
AwsCredentials	getAwsCredentials() Returns the AwsCredentials for this provider

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InstanceCredentialsProvider

public InstanceCredentialsProvider(java.lang.String roleName)

Constructs an instance with the security credentials for the specified IAM role

Parameters:

roleName - the name of the IAM role to retrieve

InstanceCredentialsProvider

public InstanceCredentialsProvider()

Constructs an instance

When constructing this instance the instance metadata services will be queried for available role names and the first role will be selected. This is same behavior as the AWS SDK.

Method Detail

getAwsCredentials

public AwsCredentials getAwsCredentials()

Returns the AwsCredentials for this provider

Specified by:

getAwsCredentials in interface AwsCredentialsProvider

Returns:

the AwsCredentials