1 /**
2 * Licensed to jclouds, Inc. (jclouds) under one or more
3 * contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. jclouds licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.jclouds.http;
20
21 import java.util.concurrent.Future;
22
23 import com.google.common.base.Function;
24 import com.google.common.util.concurrent.ListenableFuture;
25
26 /**
27 * Executor which will invoke and transform the response of an {@code EndpointCommand} into generic
28 * type <T>.
29 *
30 * @author Adrian Cole
31 */
32 public interface TransformingHttpCommandExecutorService {
33 /**
34 *
35 * Submits the command and transforms the result before requested via {@link Future#get()}.
36 *
37 * @param <T>
38 * type that is required from the value.
39 * @param command
40 * holds the state of the request, including metadata such as redirect counts
41 * @param responseTransformer
42 * how to transform the response from the above command
43 * @return value of the intended response.
44 */
45 public <T, R extends HttpRequest> ListenableFuture<T> submit(HttpCommand command,
46 Function<HttpResponse, T> responseTransformer);
47
48 }