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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.quicksearchbox;
     18 
     19 import android.content.Context;
     20 import android.util.EventLog;
     21 
     22 import java.util.Collection;
     23 import java.util.List;
     24 import java.util.Random;
     25 
     26 /**
     27  * Logs events to {@link EventLog}.
     28  */
     29 public class EventLogLogger implements Logger {
     30 
     31     private static final char LIST_SEPARATOR = '|';
     32 
     33     private final Context mContext;
     34 
     35     private final Config mConfig;
     36 
     37     private final String mPackageName;
     38 
     39     private final Random mRandom;
     40 
     41     public EventLogLogger(Context context, Config config) {
     42         mContext = context;
     43         mConfig = config;
     44         mPackageName = mContext.getPackageName();
     45         mRandom = new Random();
     46     }
     47 
     48     protected Context getContext() {
     49         return mContext;
     50     }
     51 
     52     protected int getVersionCode() {
     53         return QsbApplication.get(getContext()).getVersionCode();
     54     }
     55 
     56     protected Config getConfig() {
     57         return mConfig;
     58     }
     59 
     60     @Override
     61     public void logStart(int onCreateLatency, int latency, String intentSource) {
     62         // TODO: Add more info to startMethod
     63         String startMethod = intentSource;
     64         EventLogTags.writeQsbStart(mPackageName, getVersionCode(), startMethod,
     65                 latency, null, null, onCreateLatency);
     66     }
     67 
     68     @Override
     69     public void logSuggestionClick(long id, SuggestionCursor suggestionCursor, int clickType) {
     70         String suggestions = getSuggestions(suggestionCursor);
     71         int numChars = suggestionCursor.getUserQuery().length();
     72         EventLogTags.writeQsbClick(id, suggestions, null, numChars,
     73                 clickType);
     74     }
     75 
     76     @Override
     77     public void logSearch(int startMethod, int numChars) {
     78         EventLogTags.writeQsbSearch(null, startMethod, numChars);
     79     }
     80 
     81     @Override
     82     public void logVoiceSearch() {
     83         EventLogTags.writeQsbVoiceSearch(null);
     84     }
     85 
     86     @Override
     87     public void logExit(SuggestionCursor suggestionCursor, int numChars) {
     88         String suggestions = getSuggestions(suggestionCursor);
     89         EventLogTags.writeQsbExit(suggestions, numChars);
     90     }
     91 
     92     @Override
     93     public void logLatency(SourceResult result) {
     94     }
     95 
     96     private String getSuggestions(SuggestionCursor cursor) {
     97         StringBuilder sb = new StringBuilder();
     98         final int count = cursor == null ? 0 : cursor.getCount();
     99         for (int i = 0; i < count; i++) {
    100             if (i > 0) sb.append(LIST_SEPARATOR);
    101             cursor.moveTo(i);
    102             String source = cursor.getSuggestionSource().getName();
    103             String type = cursor.getSuggestionLogType();
    104             if (type == null) type = "";
    105             String shortcut = cursor.isSuggestionShortcut() ? "shortcut" : "";
    106             sb.append(source).append(':').append(type).append(':').append(shortcut);
    107         }
    108         return sb.toString();
    109     }
    110 
    111 }
    112