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      1 /*
      2  * Copyright (C) 2009 The Android Open Source Project
      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 
     17 package com.android.dumprendertree.forwarder;
     18 
     19 import java.io.BufferedReader;
     20 import java.io.File;
     21 import java.io.FileReader;
     22 import java.io.IOException;
     23 
     24 import android.util.Log;
     25 
     26 public class ForwardService {
     27 
     28     private ForwardServer fs8000, fs8080, fs8443;
     29 
     30     private static ForwardService inst;
     31 
     32     private static final String LOGTAG = "ForwardService";
     33 
     34     private static final String DEFAULT_TEST_HOST = "android-browser-test.mtv.corp.google.com";
     35 
     36     private static final String FORWARD_HOST_CONF = "/sdcard/drt_forward_host.txt";
     37 
     38     private ForwardService() {
     39         int addr = getForwardHostAddr();
     40         if (addr != -1) {
     41             fs8000 = new ForwardServer(8000, addr, 8000);
     42             fs8080 = new ForwardServer(8080, addr, 8080);
     43             fs8443 = new ForwardServer(8443, addr, 8443);
     44         }
     45     }
     46 
     47     public static ForwardService getForwardService() {
     48         if (inst == null) {
     49             inst = new ForwardService();
     50         }
     51         return inst;
     52     }
     53 
     54     public void startForwardService() {
     55         try {
     56             if (fs8000 != null)
     57                 fs8000.start();
     58             if (fs8080 != null)
     59                 fs8080.start();
     60             if (fs8443 != null)
     61                 fs8443.start();
     62         } catch (IOException ioe) {
     63             Log.w(LOGTAG, "failed to start forwarder. http tests will fail.", ioe);
     64             return;
     65         }
     66     }
     67 
     68     public void stopForwardService() {
     69         if (fs8000 != null) {
     70             fs8000.stop();
     71             fs8000 = null;
     72         }
     73         if (fs8080 != null) {
     74             fs8080.stop();
     75             fs8080 = null;
     76         }
     77         if (fs8443 != null) {
     78             fs8443.stop();
     79             fs8443 = null;
     80         }
     81         Log.v(LOGTAG, "forwarders stopped.");
     82     }
     83 
     84     private static int getForwardHostAddr() {
     85         int addr = -1;
     86         String host = null;
     87         File forwardHostConf = new File(FORWARD_HOST_CONF);
     88         if (forwardHostConf.isFile()) {
     89             BufferedReader hostReader = null;
     90             try {
     91                 hostReader = new BufferedReader(new FileReader(forwardHostConf));
     92                 host = hostReader.readLine();
     93                 Log.v(LOGTAG, "read forward host from file: " + host);
     94             } catch (IOException ioe) {
     95                 Log.v(LOGTAG, "cannot read forward host from file", ioe);
     96             } finally {
     97                 if (hostReader != null) {
     98                     try {
     99                         hostReader.close();
    100                     } catch (IOException ioe) {
    101                         // burn!!!
    102                     }
    103                 }
    104             }
    105         }
    106         if (host == null || host.length() == 0)
    107             host = DEFAULT_TEST_HOST;
    108         try {
    109             addr = AdbUtils.resolve(host);
    110         } catch (IOException ioe) {
    111             Log.e(LOGTAG, "failed to resolve server address", ioe);
    112         }
    113         return addr;
    114     }
    115 }
    116