| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.launcher3; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.util.Log; |
| |
| import java.io.*; |
| import java.util.ArrayList; |
| |
| public class Stats { |
| private static final boolean DEBUG_BROADCASTS = false; |
| private static final String TAG = "Launcher3/Stats"; |
| |
| private static final boolean LOCAL_LAUNCH_LOG = true; |
| |
| public static final String ACTION_LAUNCH = "com.android.launcher3.action.LAUNCH"; |
| public static final String PERM_LAUNCH = "com.android.launcher3.permission.RECEIVE_LAUNCH_BROADCASTS"; |
| public static final String EXTRA_INTENT = "intent"; |
| public static final String EXTRA_CONTAINER = "container"; |
| public static final String EXTRA_SCREEN = "screen"; |
| public static final String EXTRA_CELLX = "cellX"; |
| public static final String EXTRA_CELLY = "cellY"; |
| |
| private static final String LOG_FILE_NAME = "launches.log"; |
| private static final int LOG_VERSION = 1; |
| private static final int LOG_TAG_VERSION = 0x1; |
| private static final int LOG_TAG_LAUNCH = 0x1000; |
| |
| private static final String STATS_FILE_NAME = "stats.log"; |
| private static final int STATS_VERSION = 1; |
| private static final int INITIAL_STATS_SIZE = 100; |
| |
| // TODO: delayed/batched writes |
| private static final boolean FLUSH_IMMEDIATELY = true; |
| |
| private final Launcher mLauncher; |
| |
| DataOutputStream mLog; |
| |
| ArrayList<String> mIntents; |
| ArrayList<Integer> mHistogram; |
| |
| public Stats(Launcher launcher) { |
| mLauncher = launcher; |
| |
| loadStats(); |
| |
| if (LOCAL_LAUNCH_LOG) { |
| try { |
| mLog = new DataOutputStream(mLauncher.openFileOutput(LOG_FILE_NAME, Context.MODE_APPEND)); |
| mLog.writeInt(LOG_TAG_VERSION); |
| mLog.writeInt(LOG_VERSION); |
| } catch (FileNotFoundException e) { |
| Log.e(TAG, "unable to create stats log: " + e); |
| mLog = null; |
| } catch (IOException e) { |
| Log.e(TAG, "unable to write to stats log: " + e); |
| mLog = null; |
| } |
| } |
| |
| if (DEBUG_BROADCASTS) { |
| launcher.registerReceiver( |
| new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| android.util.Log.v("Stats", "got broadcast: " + intent + " for launched intent: " |
| + intent.getStringExtra(EXTRA_INTENT)); |
| } |
| }, |
| new IntentFilter(ACTION_LAUNCH), |
| PERM_LAUNCH, |
| null |
| ); |
| } |
| } |
| |
| public void incrementLaunch(String intentStr) { |
| int pos = mIntents.indexOf(intentStr); |
| if (pos < 0) { |
| mIntents.add(intentStr); |
| mHistogram.add(1); |
| } else { |
| mHistogram.set(pos, mHistogram.get(pos) + 1); |
| } |
| } |
| |
| public void recordLaunch(Intent intent) { |
| recordLaunch(intent, null); |
| } |
| |
| public void recordLaunch(Intent intent, ShortcutInfo shortcut) { |
| intent = new Intent(intent); |
| intent.setSourceBounds(null); |
| |
| final String flat = intent.toUri(0); |
| |
| Intent broadcastIntent = new Intent(ACTION_LAUNCH).putExtra(EXTRA_INTENT, flat); |
| if (shortcut != null) { |
| broadcastIntent.putExtra(EXTRA_CONTAINER, shortcut.container) |
| .putExtra(EXTRA_SCREEN, shortcut.screenId) |
| .putExtra(EXTRA_CELLX, shortcut.cellX) |
| .putExtra(EXTRA_CELLY, shortcut.cellY); |
| } |
| mLauncher.sendBroadcast(broadcastIntent, PERM_LAUNCH); |
| |
| incrementLaunch(flat); |
| |
| if (FLUSH_IMMEDIATELY) { |
| saveStats(); |
| } |
| |
| if (LOCAL_LAUNCH_LOG && mLog != null) { |
| try { |
| mLog.writeInt(LOG_TAG_LAUNCH); |
| mLog.writeLong(System.currentTimeMillis()); |
| if (shortcut == null) { |
| mLog.writeShort(0); |
| mLog.writeShort(0); |
| mLog.writeShort(0); |
| mLog.writeShort(0); |
| } else { |
| mLog.writeShort((short) shortcut.container); |
| mLog.writeShort((short) shortcut.screenId); |
| mLog.writeShort((short) shortcut.cellX); |
| mLog.writeShort((short) shortcut.cellY); |
| } |
| mLog.writeUTF(flat); |
| if (FLUSH_IMMEDIATELY) { |
| mLog.flush(); // TODO: delayed writes |
| } |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| private void saveStats() { |
| DataOutputStream stats = null; |
| try { |
| stats = new DataOutputStream(mLauncher.openFileOutput(STATS_FILE_NAME + ".tmp", Context.MODE_PRIVATE)); |
| stats.writeInt(STATS_VERSION); |
| final int N = mHistogram.size(); |
| stats.writeInt(N); |
| for (int i=0; i<N; i++) { |
| stats.writeUTF(mIntents.get(i)); |
| stats.writeInt(mHistogram.get(i)); |
| } |
| stats.close(); |
| stats = null; |
| mLauncher.getFileStreamPath(STATS_FILE_NAME + ".tmp") |
| .renameTo(mLauncher.getFileStreamPath(STATS_FILE_NAME)); |
| } catch (FileNotFoundException e) { |
| Log.e(TAG, "unable to create stats data: " + e); |
| } catch (IOException e) { |
| Log.e(TAG, "unable to write to stats data: " + e); |
| } finally { |
| if (stats != null) { |
| try { |
| stats.close(); |
| } catch (IOException e) { } |
| } |
| } |
| } |
| |
| private void loadStats() { |
| mIntents = new ArrayList<String>(INITIAL_STATS_SIZE); |
| mHistogram = new ArrayList<Integer>(INITIAL_STATS_SIZE); |
| DataInputStream stats = null; |
| try { |
| stats = new DataInputStream(mLauncher.openFileInput(STATS_FILE_NAME)); |
| final int version = stats.readInt(); |
| if (version == STATS_VERSION) { |
| final int N = stats.readInt(); |
| for (int i=0; i<N; i++) { |
| final String pkg = stats.readUTF(); |
| final int count = stats.readInt(); |
| mIntents.add(pkg); |
| mHistogram.add(count); |
| } |
| } |
| } catch (FileNotFoundException e) { |
| // not a problem |
| } catch (IOException e) { |
| // more of a problem |
| |
| } finally { |
| if (stats != null) { |
| try { |
| stats.close(); |
| } catch (IOException e) { } |
| } |
| } |
| } |
| } |