1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/base/health/SessionInformation.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,137 @@
1.4 +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +package org.mozilla.gecko.health;
1.10 +
1.11 +import android.content.SharedPreferences;
1.12 +import android.util.Log;
1.13 +
1.14 +import org.mozilla.gecko.GeckoApp;
1.15 +
1.16 +import org.json.JSONException;
1.17 +import org.json.JSONObject;
1.18 +
1.19 +public class SessionInformation {
1.20 + private static final String LOG_TAG = "GeckoSessInfo";
1.21 +
1.22 + public static final String PREFS_SESSION_START = "sessionStart";
1.23 +
1.24 + public final long wallStartTime; // System wall clock.
1.25 + public final long realStartTime; // Realtime clock.
1.26 +
1.27 + private final boolean wasOOM;
1.28 + private final boolean wasStopped;
1.29 +
1.30 + private volatile long timedGeckoStartup = -1;
1.31 + private volatile long timedJavaStartup = -1;
1.32 +
1.33 + // Current sessions don't (right now) care about wasOOM/wasStopped.
1.34 + // Eventually we might want to lift that logic out of GeckoApp.
1.35 + public SessionInformation(long wallTime, long realTime) {
1.36 + this(wallTime, realTime, false, false);
1.37 + }
1.38 +
1.39 + // Previous sessions do...
1.40 + public SessionInformation(long wallTime, long realTime, boolean wasOOM, boolean wasStopped) {
1.41 + this.wallStartTime = wallTime;
1.42 + this.realStartTime = realTime;
1.43 + this.wasOOM = wasOOM;
1.44 + this.wasStopped = wasStopped;
1.45 + }
1.46 +
1.47 + /**
1.48 + * Initialize a new SessionInformation instance from the supplied prefs object.
1.49 + *
1.50 + * This includes retrieving OOM/crash data, as well as timings.
1.51 + *
1.52 + * If no wallStartTime was found, that implies that the previous
1.53 + * session was correctly recorded, and an object with a zero
1.54 + * wallStartTime is returned.
1.55 + */
1.56 + public static SessionInformation fromSharedPrefs(SharedPreferences prefs) {
1.57 + boolean wasOOM = prefs.getBoolean(GeckoApp.PREFS_OOM_EXCEPTION, false);
1.58 + boolean wasStopped = prefs.getBoolean(GeckoApp.PREFS_WAS_STOPPED, true);
1.59 + long wallStartTime = prefs.getLong(PREFS_SESSION_START, 0L);
1.60 + long realStartTime = 0L;
1.61 + Log.d(LOG_TAG, "Building SessionInformation from prefs: " +
1.62 + wallStartTime + ", " + realStartTime + ", " +
1.63 + wasStopped + ", " + wasOOM);
1.64 + return new SessionInformation(wallStartTime, realStartTime, wasOOM, wasStopped);
1.65 + }
1.66 +
1.67 + /**
1.68 + * Initialize a new SessionInformation instance to 'split' the current
1.69 + * session.
1.70 + */
1.71 + public static SessionInformation forRuntimeTransition() {
1.72 + final boolean wasOOM = false;
1.73 + final boolean wasStopped = true;
1.74 + final long wallStartTime = System.currentTimeMillis();
1.75 + final long realStartTime = android.os.SystemClock.elapsedRealtime();
1.76 + Log.v(LOG_TAG, "Recording runtime session transition: " +
1.77 + wallStartTime + ", " + realStartTime);
1.78 + return new SessionInformation(wallStartTime, realStartTime, wasOOM, wasStopped);
1.79 + }
1.80 +
1.81 + public boolean wasKilled() {
1.82 + return wasOOM || !wasStopped;
1.83 + }
1.84 +
1.85 + /**
1.86 + * Record the beginning of this session to SharedPreferences by
1.87 + * recording our start time. If a session was already recorded, it is
1.88 + * overwritten (there can only be one running session at a time). Does
1.89 + * not commit the editor.
1.90 + */
1.91 + public void recordBegin(SharedPreferences.Editor editor) {
1.92 + Log.d(LOG_TAG, "Recording start of session: " + this.wallStartTime);
1.93 + editor.putLong(PREFS_SESSION_START, this.wallStartTime);
1.94 + }
1.95 +
1.96 + /**
1.97 + * Record the completion of this session to SharedPreferences by
1.98 + * deleting our start time. Does not commit the editor.
1.99 + */
1.100 + public void recordCompletion(SharedPreferences.Editor editor) {
1.101 + Log.d(LOG_TAG, "Recording session done: " + this.wallStartTime);
1.102 + editor.remove(PREFS_SESSION_START);
1.103 + }
1.104 +
1.105 + /**
1.106 + * Return the JSON that we'll put in the DB for this session.
1.107 + */
1.108 + public JSONObject getCompletionJSON(String reason, long realEndTime) throws JSONException {
1.109 + long durationSecs = (realEndTime - this.realStartTime) / 1000;
1.110 + JSONObject out = new JSONObject();
1.111 + out.put("r", reason);
1.112 + out.put("d", durationSecs);
1.113 + if (this.timedGeckoStartup > 0) {
1.114 + out.put("sg", this.timedGeckoStartup);
1.115 + }
1.116 + if (this.timedJavaStartup > 0) {
1.117 + out.put("sj", this.timedJavaStartup);
1.118 + }
1.119 + return out;
1.120 + }
1.121 +
1.122 + public JSONObject getCrashedJSON() throws JSONException {
1.123 + JSONObject out = new JSONObject();
1.124 + // We use ints here instead of booleans, because we're packing
1.125 + // stuff into JSON, and saving bytes in the DB is a worthwhile
1.126 + // goal.
1.127 + out.put("oom", this.wasOOM ? 1 : 0);
1.128 + out.put("stopped", this.wasStopped ? 1 : 0);
1.129 + out.put("r", "A");
1.130 + return out;
1.131 + }
1.132 +
1.133 + public void setTimedGeckoStartup(final long duration) {
1.134 + timedGeckoStartup = duration;
1.135 + }
1.136 +
1.137 + public void setTimedJavaStartup(final long duration) {
1.138 + timedJavaStartup = duration;
1.139 + }
1.140 +}
