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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.os.Environment;
     25 import android.util.Log;
     26 
     27 public class ForwardService {
     28 
     29     private ForwardServer fs8000, fs8080, fs8443;
     30 
     31     private static ForwardService inst;
     32 
     33     private static final String LOGTAG = "ForwardService";
     34 
     35     private static final String DEFAULT_TEST_HOST = "android-browser-test.mtv.corp.google.com";
     36 
     37     private static final String FORWARD_HOST_CONF =
     38         Environment.getExternalStorageDirectory() + "/drt_forward_host.txt";
     39 
     40     private ForwardService() {
     41         int addr = getForwardHostAddr();
     42         if (addr != -1) {
     43             fs8000 = new ForwardServer(8000, addr, 8000);
     44             fs8080 = new ForwardServer(8080, addr, 8080);
     45             fs8443 = new ForwardServer(8443, addr, 8443);
     46         }
     47     }
     48 
     49     public static ForwardService getForwardService() {
     50         if (inst == null) {
     51             inst = new ForwardService();
     52         }
     53         return inst;
     54     }
     55 
     56     public void startForwardService() {
     57         try {
     58             if (fs8000 != null)
     59                 fs8000.start();
     60             if (fs8080 != null)
     61                 fs8080.start();
     62             if (fs8443 != null)
     63                 fs8443.start();
     64         } catch (IOException ioe) {
     65             Log.w(LOGTAG, "failed to start forwarder. http tests will fail.", ioe);
     66             return;
     67         }
     68     }
     69 
     70     public void stopForwardService() {
     71         if (fs8000 != null) {
     72             fs8000.stop();
     73             fs8000 = null;
     74         }
     75         if (fs8080 != null) {
     76             fs8080.stop();
     77             fs8080 = null;
     78         }
     79         if (fs8443 != null) {
     80             fs8443.stop();
     81             fs8443 = null;
     82         }
     83         Log.v(LOGTAG, "forwarders stopped.");
     84     }
     85 
     86     private static int getForwardHostAddr() {
     87         int addr = -1;
     88         String host = null;
     89         File forwardHostConf = new File(FORWARD_HOST_CONF);
     90         if (forwardHostConf.isFile()) {
     91             BufferedReader hostReader = null;
     92             try {
     93                 hostReader = new BufferedReader(new FileReader(forwardHostConf));
     94                 host = hostReader.readLine();
     95                 Log.v(LOGTAG, "read forward host from file: " + host);
     96             } catch (IOException ioe) {
     97                 Log.v(LOGTAG, "cannot read forward host from file", ioe);
     98             } finally {
     99                 if (hostReader != null) {
    100                     try {
    101                         hostReader.close();
    102                     } catch (IOException ioe) {
    103                         // burn!!!
    104                     }
    105                 }
    106             }
    107         }
    108         if (host == null || host.length() == 0)
    109             host = DEFAULT_TEST_HOST;
    110         try {
    111             addr = AdbUtils.resolve(host);
    112         } catch (IOException ioe) {
    113             Log.e(LOGTAG, "failed to resolve server address", ioe);
    114         }
    115         return addr;
    116     }
    117 }
    118