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/*
* Copyright 2010-2014 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 com.amazonaws.http;
/**
* Responsible for handling an HTTP response and returning an object of type T.
* For example, a typical response handler might accept a response, and
* translate it into a concrete typed object.
*
* @param
* The output of this response handler.
*/
public interface HttpResponseHandler {
/**
* Accepts an HTTP response object, and returns an object of type T.
* Individual implementations may choose to handle the response however they
* need to, and return any type that they need to.
*
* @param response
* The HTTP response to handle, as received from an AWS service.
*
* @return An object of type T, as defined by individual implementations.
*
* @throws Exception
* If any problems are encountered handling the response.
*/
public T handle(HttpResponse response) throws Exception;
/**
* Indicates if this response handler requires that the underlying HTTP
* connection not be closed automatically after the response is
* handled.
*
* For example, if the object returned by this response handler manually
* manages the stream of data from the HTTP connection, and doesn't read all
* the data from the connection in the {@link #handle(HttpResponse)} method,
* this method can be used to prevent the underlying connection from being
* prematurely closed.
*
* Response handlers should use this option very carefully, since it means
* that resource cleanup is no longer handled automatically, and if
* neglected, can result in the client runtime running out of resources for
* new HTTP connections.
*
* @return True if this response handler requires that the underlying HTTP
* connection be left open, and not automatically closed, otherwise
* false.
*/
public boolean needsConnectionLeftOpen();
}