AWS SDK V2: HTTP Proxy Configuration for AWS SDK Clients

[arunkpatra]

AWS SDK V2 has introduced new mechanisms to configure SDKClients, e.g software.amazon.awssdk.services.sesv2.SesV2Client or the S3Client especially the way client configuration overrides are provided while building the client. Any overrides related to the underlying ApacheHttpClient for all AWS SDK clients are now to be provided using the SdkHttpClient. Since a feature like the 'http proxy' probably would apply to the entire running application, would it be better to have the capability to auto configure a SdkHttpClient from the spring-cloud-aws-v3-autoconfigure module?

That way, any other module may use it their SDK Clients (e.g. SES Client) like:

SesV2Client.builder()
    .credentialsProvider(awsCredentialsProvider)
    .region(awsRegionProvider.getRegion())
    .httpClient(sdkHttpClient).build();

In AutoConfig module we could configure the

@Bean
public SdkHttpClient sdkHttpClient() {

ProxyConfiguration proxyConfiguration = ProxyConfiguration.builder().endpoint(URI.create("host:port")).username("usr").password("pwd").build();

SdkHttpClient sdkHttpClient =
        ApacheSdkHttpClientFactory.builder().proxyConfiguration(proxyConfiguration).build().createHttpClient();

return sdkHttpClient 
}

The properties to configure the SdkHttpClient would be provided by the user under lets say spring.cloud.aws.http?

@maciejwalkowiak @eddumelendez @MatejNedic please suggest.