Signing AWS HTTP requests with Apache HttpComponents Client

I think I found it! :)

This project seems to do exactly what I want : aws-signing-request-interceptor, described as "Request Interceptor for Apache Client that signs the request for AWS. Originally created to support AWS' Elasticsearch Service using the Jest client.".

Edit : I forked the project to fit my needs (Java 7, temporary STS credentials), and it works nicely.

Here is an example of usage (here without STS temporary credentials):

String region = "us-east-1";String service = "es";String url = "???"; // put the AWS ElasticSearch endpoint hereDefaultAWSCredentialsProviderChain awsCredentialsProvider = new DefaultAWSCredentialsProviderChain();final AWSSigner awsSigner = new AWSSigner(awsCredentialsProvider, region, service, () -> new LocalDateTime(DateTimeZone.UTC));JestClientFactory factory = new JestClientFactory() {    @Override    protected HttpClientBuilder configureHttpClient(HttpClientBuilder builder) {        builder.addInterceptorLast(new AWSSigningRequestInterceptor(awsSigner));        return builder;    }};factory.setHttpClientConfig(new HttpClientConfig.Builder(url)        .multiThreaded(true)        .build());JestClient client = factory.getObject();

This doesn't work in case of Async request.

Update:

Ignore my previous comment. It works after adding interceptor for async requests too:

final AWSSigningRequestInterceptor requestInterceptor = new AWSSigningRequestInterceptor(awsSigner);            factory = new JestClientFactory() {                @Override                protected HttpClientBuilder configureHttpClient(HttpClientBuilder builder) {                    builder.addInterceptorLast(requestInterceptor);                    return builder;                }                @Override                protected HttpAsyncClientBuilder configureHttpClient(HttpAsyncClientBuilder builder) {                    builder.addInterceptorLast(requestInterceptor);                    return builder;                }            };