io.druid.java.util.http.client.HttpClient Maven / Gradle / Ivy
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* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License 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 io.druid.java.util.http.client;
import com.google.common.util.concurrent.ListenableFuture;
import io.druid.java.util.http.client.response.HttpResponseHandler;
import org.joda.time.Duration;
/**
* Interface for Async HTTP client libraries.
*/
public interface HttpClient
{
/**
* Submit a request and process the response with the given response handler.
*
* Note that the Request object passed in to the HttpClient *may* be mutated by the actual client. This is
* largely done by composed clients, but the contract is that mutation is possible. It is the caller's
* responsibility to pass in a copy of the Request object if they want to have an object that is not mutated.
*
* @param request Request to process, this *may* be mutated by the client
* @param handler An asynchronous response handler that will be used to process results from the http call
* @param The type of the intermediate results from the handler
* @param The type of the final results that the returned ListenableFuture will contain
*
* @return A listenable future that will eventually provide an object of type Final
*/
ListenableFuture go(
Request request,
HttpResponseHandler handler
);
/**
* Submit a request and process the response with the given response handler.
*
* Note that the Request object passed in to the HttpClient *may* be mutated by the actual client. This is
* largely done by composed clients, but the contract is that mutation is possible. It is the caller's
* responsibility to pass in a copy of the Request object if they want to have an object that is not mutated.
*
* @param request Request to process, this *may* be mutated by the client
* @param handler An asynchronous response handler that will be used to process results from the http call
* @param readTimeout Read timeout to use for this request. Leave null to use the default readTimeout. Set to zero
* to disable timeouts for this request.
* @param The type of the intermediate results from the handler
* @param The type of the final results that the returned ListenableFuture will contain
*
* @return A listenable future that will eventually provide an object of type Final
*/
ListenableFuture go(
Request request,
HttpResponseHandler handler,
Duration readTimeout
);
}