software.amazon.awssdk.http.apache.internal.SdkConnectionReuseStrategy Maven / Gradle / Ivy
/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package software.amazon.awssdk.http.apache.internal;
import org.apache.http.HttpResponse;
import org.apache.http.impl.client.DefaultClientConnectionReuseStrategy;
import org.apache.http.protocol.HttpContext;
import software.amazon.awssdk.annotations.SdkInternalApi;
/**
* Do not reuse connections that returned a 5xx error.
*
* This is not strictly the behavior we would want in an AWS client, because sometimes we might want to keep a connection open
* (e.g. an undocumented service's 503 'SlowDown') and sometimes we might want to close the connection (e.g. S3's 400
* RequestTimeout or Glacier's 408 RequestTimeoutException), but this is good enough for the majority of services, and the ones
* for which it is not should not be impacted too harshly.
*/
@SdkInternalApi
public class SdkConnectionReuseStrategy extends DefaultClientConnectionReuseStrategy {
@Override
public boolean keepAlive(HttpResponse response, HttpContext context) {
if (!super.keepAlive(response, context)) {
return false;
}
if (response == null || response.getStatusLine() == null) {
return false;
}
return !is500(response);
}
private boolean is500(HttpResponse httpResponse) {
return httpResponse.getStatusLine().getStatusCode() / 100 == 5;
}
}