src/ro/ieval/fonbot/PollResultCallback.java

   1 package ro.ieval.fonbot;
   2
   3 import static ro.ieval.fonbot.Utils.toNonNull;
   4
   5 import java.io.InputStream;
   6 import org.eclipse.jdt.annotation.Nullable;
   7
   8 import org.json.JSONArray;
   9 import org.json.JSONObject;
  10
  11 import android.content.Context;
  12 import android.os.Handler;
  13 import android.os.Looper;
  14 import android.util.Log;
  15
  16 import ro.ieval.fonbot.Address.Protocol;
  17 import ro.ieval.fonbot.HttpCallExecutableRunnable.ResultCallback;
  18
  19 /*
  20 * Copyright © 2013 Marius Gavrilescu
  21 *
  22 * This file is part of FonBot.
  23 *
  24 * FonBot is free software: you can redistribute it and/or modify
  25 * it under the terms of the GNU General Public License as published by
  26 * the Free Software Foundation, either version 3 of the License, or
  27 * (at your option) any later version.
  28 *
  29 * FonBot is distributed in the hope that it will be useful,
  30 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  32 * GNU General Public License for more details.
  33 *
  34 * You should have received a copy of the GNU General Public License
  35 * along with FonBot.  If not, see <http://www.gnu.org/licenses/>.
  36 */
  37
  38 /**
  39  * ResultCallback implementation that polls the server for pending commands.
  40  *
  41  * @author Marius Gavrilescu <marius@ieval.ro>
  42  */
  43 final class PollResultCallback implements ResultCallback {
  44         /** Context instance */
  45         private final Context context;
  46
  47         /**
  48          * Construct a <code>PollResultCallback</code> with a Context.
  49          *
  50          * @param context Context instance
  51          */
  52         public PollResultCallback(final Context context) {
  53                 this.context=context;
  54         }
  55
  56         @Override
  57         public void onResult(final int responseCode, final String responseMessage, final @Nullable InputStream inputStream) {
  58                 if(responseCode != 200 || inputStream==null){
  59                         if(responseCode != 204)
  60                                 throw new RuntimeException("Bad HTTP response code: "+responseCode);
  61                         return;
  62                 }
  63
  64                 final Handler handler=new Handler(Looper.getMainLooper());
  65
  66                 try{
  67                         final JSONArray array;
  68                         {
  69                                 final byte[] buf=new byte[2048*1024];
  70                                 final int length=inputStream.read(buf);
  71                                 array=new JSONArray(new String(buf, 0, length));
  72                         }
  73
  74                         for(int i=0;i<array.length();i++){
  75                                 final JSONObject object=array.getJSONObject(i);
  76
  77                                 final JSONArray jsonargs=object.getJSONArray("args");
  78                                 final String command=object.getString("command");
  79                                 final Address replyTo=new Address(toNonNull(Protocol.HTTP), object.getString("replyto"), object.has("requestid") ? object.getString("requestid") : null);//NOPMD address depends on command
  80                                 final String[] args=new String[jsonargs.length()];
  81                                 for(int j=0;j<args.length;j++)
  82                                         args[j]=jsonargs.getString(j);
  83
  84                                 Log.d(getClass().getName(), "Poll got command "+command+" with "+((args.length==0)?"no args":"args "+Utils.join(
  85                                                 " ",toNonNull(args))));
  86
  87                                 handler.post(new Runnable() {
  88                                         @Override
  89                                         public void run() {
  90                                                 Utils.processCommand(
  91                                                                 toNonNull(context),
  92                                                                 toNonNull(command),
  93                                                                 args, replyTo);
  94                                         }
  95                                 });
  96                         }
  97                 }catch(Exception ex){
  98                         ex.printStackTrace();
  99                 }
 100         }
 101
 102         @Override
 103         public void onError(final String error) {
 104                 Log.e("PollResultCallback", "onError: "+error);
 105                 throw new RuntimeException(error);
 106         }
 107
 108 }