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      1 /*
      2  * Copyright (C) 2012 Google Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.google.mockwebserver;
     17 
     18 import java.net.HttpURLConnection;
     19 import java.util.concurrent.BlockingQueue;
     20 import java.util.concurrent.LinkedBlockingQueue;
     21 
     22 /**
     23  * Default dispatcher that processes a script of responses.  Populate the script by calling
     24  * {@link #enqueueResponse(MockResponse)}.
     25  */
     26 public class QueueDispatcher extends Dispatcher {
     27     protected final BlockingQueue<MockResponse> responseQueue
     28             = new LinkedBlockingQueue<MockResponse>();
     29     private MockResponse failFastResponse;
     30 
     31     @Override public MockResponse dispatch(RecordedRequest request) throws InterruptedException {
     32         // to permit interactive/browser testing, ignore requests for favicons
     33         final String requestLine = request.getRequestLine();
     34         if (requestLine != null && requestLine.equals("GET /favicon.ico HTTP/1.1")) {
     35             System.out.println("served " + requestLine);
     36             return new MockResponse()
     37                     .setResponseCode(HttpURLConnection.HTTP_NOT_FOUND);
     38         }
     39 
     40         if (failFastResponse != null && responseQueue.peek() == null) {
     41             // Fail fast if there's no response queued up.
     42             return failFastResponse;
     43         }
     44 
     45         return responseQueue.take();
     46     }
     47 
     48     @Override public MockResponse peek() {
     49         MockResponse peek = responseQueue.peek();
     50         if (peek != null) return peek;
     51         if (failFastResponse != null) return failFastResponse;
     52         return super.peek();
     53     }
     54 
     55     public void enqueueResponse(MockResponse response) {
     56         responseQueue.add(response);
     57     }
     58 
     59     public void setFailFast(boolean failFast) {
     60         MockResponse failFastResponse = failFast
     61                 ? new MockResponse().setResponseCode(HttpURLConnection.HTTP_NOT_FOUND)
     62                 : null;
     63         setFailFast(failFastResponse);
     64     }
     65 
     66     public void setFailFast(MockResponse failFastResponse) {
     67         this.failFastResponse = failFastResponse;
     68     }
     69 }
     70