| /* |
| * Copyright (C) 2017 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.settings.dashboard.suggestions; |
| |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.util.Log; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Stores suggestion related statistics. |
| */ |
| public class EventStore { |
| |
| public static final String TAG = "SuggestionEventStore"; |
| |
| public static final String EVENT_SHOWN = "shown"; |
| public static final String EVENT_DISMISSED = "dismissed"; |
| public static final String EVENT_CLICKED = "clicked"; |
| public static final String METRIC_LAST_EVENT_TIME = "last_event_time"; |
| public static final String METRIC_COUNT = "count"; |
| |
| private static final Set<String> EVENTS = new HashSet<String>( |
| Arrays.asList(new String[] {EVENT_SHOWN, EVENT_DISMISSED, EVENT_CLICKED})); |
| private static final Set<String> METRICS = new HashSet<String>( |
| Arrays.asList(new String[] {METRIC_LAST_EVENT_TIME, METRIC_COUNT})); |
| |
| private final SharedPreferences mSharedPrefs; |
| |
| public EventStore(Context context) { |
| mSharedPrefs = context.getSharedPreferences(TAG, Context.MODE_PRIVATE); |
| } |
| |
| /** |
| * Writes individual log events. |
| * @param pkgName: Package for which this event is reported. |
| * @param eventType: Type of event (one of {@link #EVENTS}). |
| */ |
| public void writeEvent(String pkgName, String eventType) { |
| if (!EVENTS.contains(eventType)) { |
| Log.w(TAG, "Reported event type " + eventType + " is not a valid type!"); |
| return; |
| } |
| final String lastTimePrefKey = getPrefKey(pkgName, eventType, METRIC_LAST_EVENT_TIME); |
| final String countPrefKey = getPrefKey(pkgName, eventType, METRIC_COUNT); |
| writePref(lastTimePrefKey, System.currentTimeMillis()); |
| writePref(countPrefKey, readPref(countPrefKey, (long) 0) + 1); |
| } |
| |
| /** |
| * Reads metric of the the reported events (e.g., counts). |
| * @param pkgName: Package for which this metric is queried. |
| * @param eventType: Type of event (one of {@link #EVENTS}). |
| * @param metricType: Type of the queried metric (one of {@link #METRICS}). |
| * @return the corresponding metric. |
| */ |
| public long readMetric(String pkgName, String eventType, String metricType) { |
| if (!EVENTS.contains(eventType)) { |
| Log.w(TAG, "Reported event type " + eventType + " is not a valid event!"); |
| return 0; |
| } else if (!METRICS.contains(metricType)) { |
| Log.w(TAG, "Required stat type + " + metricType + " is not a valid stat!"); |
| return 0; |
| } |
| return readPref(getPrefKey(pkgName, eventType, metricType), (long) 0); |
| } |
| |
| private void writePref(String prefKey, long value) { |
| mSharedPrefs.edit().putLong(prefKey, value).commit(); |
| } |
| |
| private long readPref(String prefKey, Long defaultValue) { |
| return mSharedPrefs.getLong(prefKey, defaultValue); |
| } |
| |
| private String getPrefKey(String pkgName, String eventType, String statType) { |
| return new StringBuilder() |
| .append("setting_suggestion_") |
| .append(pkgName) |
| .append("_") |
| .append(eventType) |
| .append("_") |
| .append(statType) |
| .toString(); |
| } |
| } |