103 lines
3.8 KiB
Java
103 lines
3.8 KiB
Java
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package com.android.settings.dashboard.suggestions;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.util.Log;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.Set;
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/**
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* Stores suggestion related statistics.
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*/
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public class EventStore {
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public static final String TAG = "SuggestionEventStore";
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public static final String EVENT_SHOWN = "shown";
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public static final String EVENT_DISMISSED = "dismissed";
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public static final String EVENT_CLICKED = "clicked";
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public static final String METRIC_LAST_EVENT_TIME = "last_event_time";
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public static final String METRIC_COUNT = "count";
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private static final Set<String> EVENTS = new HashSet<String>(
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Arrays.asList(new String[] {EVENT_SHOWN, EVENT_DISMISSED, EVENT_CLICKED}));
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private static final Set<String> METRICS = new HashSet<String>(
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Arrays.asList(new String[] {METRIC_LAST_EVENT_TIME, METRIC_COUNT}));
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private final SharedPreferences mSharedPrefs;
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public EventStore(Context context) {
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mSharedPrefs = context.getSharedPreferences(TAG, Context.MODE_PRIVATE);
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}
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/**
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* Writes individual log events.
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* @param pkgName: Package for which this event is reported.
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* @param eventType: Type of event (one of {@link #EVENTS}).
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*/
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public void writeEvent(String pkgName, String eventType) {
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if (!EVENTS.contains(eventType)) {
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Log.w(TAG, "Reported event type " + eventType + " is not a valid type!");
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return;
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}
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final String lastTimePrefKey = getPrefKey(pkgName, eventType, METRIC_LAST_EVENT_TIME);
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final String countPrefKey = getPrefKey(pkgName, eventType, METRIC_COUNT);
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writePref(lastTimePrefKey, System.currentTimeMillis());
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writePref(countPrefKey, readPref(countPrefKey, (long) 0) + 1);
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}
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/**
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* Reads metric of the the reported events (e.g., counts).
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* @param pkgName: Package for which this metric is queried.
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* @param eventType: Type of event (one of {@link #EVENTS}).
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* @param metricType: Type of the queried metric (one of {@link #METRICS}).
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* @return the corresponding metric.
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*/
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public long readMetric(String pkgName, String eventType, String metricType) {
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if (!EVENTS.contains(eventType)) {
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Log.w(TAG, "Reported event type " + eventType + " is not a valid event!");
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return 0;
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} else if (!METRICS.contains(metricType)) {
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Log.w(TAG, "Required stat type + " + metricType + " is not a valid stat!");
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return 0;
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}
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return readPref(getPrefKey(pkgName, eventType, metricType), (long) 0);
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}
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private void writePref(String prefKey, long value) {
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mSharedPrefs.edit().putLong(prefKey, value).commit();
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}
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private long readPref(String prefKey, Long defaultValue) {
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return mSharedPrefs.getLong(prefKey, defaultValue);
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}
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private String getPrefKey(String pkgName, String eventType, String statType) {
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return new StringBuilder()
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.append("setting_suggestion_")
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.append(pkgName)
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.append("_")
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.append(eventType)
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.append("_")
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.append(statType)
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.toString();
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}
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}
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