gecko/toolkit/components/telemetry/TelemetryPing.js

1141 lines
38 KiB
JavaScript

/* -*- indent-tabs-mode: nil -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
const Cu = Components.utils;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/NetUtil.jsm");
#ifndef MOZ_WIDGET_GONK
Cu.import("resource://gre/modules/LightweightThemeManager.jsm");
#endif
Cu.import("resource://gre/modules/ctypes.jsm");
// When modifying the payload in incompatible ways, please bump this version number
const PAYLOAD_VERSION = 1;
// This is the HG changeset of the Histogram.json file, used to associate
// submitted ping data with its histogram definition (bug 832007)
#expand const HISTOGRAMS_FILE_VERSION = "__HISTOGRAMS_FILE_VERSION__";
const PREF_BRANCH = "toolkit.telemetry.";
const PREF_SERVER = PREF_BRANCH + "server";
#ifdef MOZ_TELEMETRY_ON_BY_DEFAULT
const PREF_ENABLED = PREF_BRANCH + "enabledPreRelease";
#else
const PREF_ENABLED = PREF_BRANCH + "enabled";
#endif
const PREF_PREVIOUS_BUILDID = PREF_BRANCH + "previousBuildID";
// Do not gather data more than once a minute
const TELEMETRY_INTERVAL = 60000;
// Delay before intializing telemetry (ms)
const TELEMETRY_DELAY = 60000;
// Delete ping files that have been lying around for longer than this.
const MAX_PING_FILE_AGE = 7 * 24 * 60 * 60 * 1000; // 1 week
// Constants from prio.h for nsIFileOutputStream.init
const PR_WRONLY = 0x2;
const PR_CREATE_FILE = 0x8;
const PR_TRUNCATE = 0x20;
const PR_EXCL = 0x80;
const RW_OWNER = 0600;
const RWX_OWNER = 0700;
// MEM_HISTOGRAMS lists the memory reporters we turn into histograms.
//
// Note that we currently handle only vanilla memory reporters, not memory
// multi-reporters.
//
// test_TelemetryPing.js relies on some of these memory reporters
// being here. If you remove any of the following histograms from
// MEM_HISTOGRAMS, you'll have to modify test_TelemetryPing.js:
//
// * MEMORY_JS_GC_HEAP, and
// * MEMORY_JS_COMPARTMENTS_SYSTEM.
//
// We used to measure "explicit" too, but it could cause hangs, and the data
// was always really noisy anyway. See bug 859657.
const MEM_HISTOGRAMS = {
"js-gc-heap": "MEMORY_JS_GC_HEAP",
"js-compartments/system": "MEMORY_JS_COMPARTMENTS_SYSTEM",
"js-compartments/user": "MEMORY_JS_COMPARTMENTS_USER",
"js-main-runtime-temporary-peak": "MEMORY_JS_MAIN_RUNTIME_TEMPORARY_PEAK",
"resident-fast": "MEMORY_RESIDENT",
"vsize": "MEMORY_VSIZE",
"storage-sqlite": "MEMORY_STORAGE_SQLITE",
"images-content-used-uncompressed":
"MEMORY_IMAGES_CONTENT_USED_UNCOMPRESSED",
"heap-allocated": "MEMORY_HEAP_ALLOCATED",
"heap-committed-unused": "MEMORY_HEAP_COMMITTED_UNUSED",
"heap-committed-unused-ratio": "MEMORY_HEAP_COMMITTED_UNUSED_RATIO",
"page-faults-hard": "PAGE_FAULTS_HARD",
"low-memory-events/virtual": "LOW_MEMORY_EVENTS_VIRTUAL",
"low-memory-events/physical": "LOW_MEMORY_EVENTS_PHYSICAL",
"ghost-windows": "GHOST_WINDOWS"
};
// Seconds of idle time before pinging.
// On idle-daily a gather-telemetry notification is fired, during it probes can
// start asynchronous tasks to gather data. On the next idle the data is sent.
const IDLE_TIMEOUT_SECONDS = 5 * 60;
var gLastMemoryPoll = null;
let gWasDebuggerAttached = false;
function getLocale() {
return Cc["@mozilla.org/chrome/chrome-registry;1"].
getService(Ci.nsIXULChromeRegistry).
getSelectedLocale('global');
}
XPCOMUtils.defineLazyServiceGetter(this, "Telemetry",
"@mozilla.org/base/telemetry;1",
"nsITelemetry");
XPCOMUtils.defineLazyServiceGetter(this, "idleService",
"@mozilla.org/widget/idleservice;1",
"nsIIdleService");
XPCOMUtils.defineLazyModuleGetter(this, "UpdateChannel",
"resource://gre/modules/UpdateChannel.jsm");
function generateUUID() {
let str = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator).generateUUID().toString();
// strip {}
return str.substring(1, str.length - 1);
}
/**
* Read current process I/O counters.
*/
let processInfo = {
_initialized: false,
_IO_COUNTERS: null,
_kernel32: null,
_GetProcessIoCounters: null,
_GetCurrentProcess: null,
getCounters: function() {
let isWindows = ("@mozilla.org/windows-registry-key;1" in Components.classes);
if (isWindows)
return this.getCounters_Windows();
return null;
},
getCounters_Windows: function() {
if (!this._initialized){
this._IO_COUNTERS = new ctypes.StructType("IO_COUNTERS", [
{'readOps': ctypes.unsigned_long_long},
{'writeOps': ctypes.unsigned_long_long},
{'otherOps': ctypes.unsigned_long_long},
{'readBytes': ctypes.unsigned_long_long},
{'writeBytes': ctypes.unsigned_long_long},
{'otherBytes': ctypes.unsigned_long_long} ]);
try {
this._kernel32 = ctypes.open("Kernel32.dll");
this._GetProcessIoCounters = this._kernel32.declare("GetProcessIoCounters",
ctypes.winapi_abi,
ctypes.bool, // return
ctypes.voidptr_t, // hProcess
this._IO_COUNTERS.ptr); // lpIoCounters
this._GetCurrentProcess = this._kernel32.declare("GetCurrentProcess",
ctypes.winapi_abi,
ctypes.voidptr_t); // return
this._initialized = true;
} catch (err) {
return null;
}
}
let io = new this._IO_COUNTERS();
if(!this._GetProcessIoCounters(this._GetCurrentProcess(), io.address()))
return null;
return [parseInt(io.readBytes), parseInt(io.writeBytes)];
}
};
function TelemetryPing() {}
TelemetryPing.prototype = {
_histograms: {},
_initialized: false,
_prevValues: {},
// Generate a unique id once per session so the server can cope with
// duplicate submissions.
_uuid: generateUUID(),
// Regex that matches histograms we care about during startup.
// Keep this in sync with gen-histogram-bucket-ranges.py.
_startupHistogramRegex: /SQLITE|HTTP|SPDY|CACHE|DNS/,
_slowSQLStartup: {},
_prevSession: null,
_hasWindowRestoredObserver: false,
_hasXulWindowVisibleObserver: false,
_pendingPings: [],
_doLoadSaveNotifications: false,
_startupIO : {},
// The number of outstanding saved pings that we have issued loading
// requests for.
_pingsLoaded: 0,
// The number of those requests that have actually completed.
_pingLoadsCompleted: 0,
_savedProfileDirectory: null,
// The previous build ID, if this is the first run with a new build.
// Undefined if this is not the first run, or the previous build ID is unknown.
_previousBuildID: undefined,
/**
* Gets a series of simple measurements (counters). At the moment, this
* only returns startup data from nsIAppStartup.getStartupInfo().
*
* @return simple measurements as a dictionary.
*/
getSimpleMeasurements: function getSimpleMeasurements(forSavedSession) {
let si = Services.startup.getStartupInfo();
var ret = {
// uptime in minutes
uptime: Math.round((new Date() - si.process) / 60000)
}
// Look for app-specific timestamps
var appTimestamps = {};
try {
let o = {};
Cu.import("resource://gre/modules/TelemetryTimestamps.jsm", o);
appTimestamps = o.TelemetryTimestamps.get();
} catch (ex) {}
try {
let o = {};
Cu.import("resource://gre/modules/AddonManager.jsm", o);
ret.addonManager = o.AddonManagerPrivate.getSimpleMeasures();
} catch (ex) {}
if (si.process) {
for each (let field in Object.keys(si)) {
if (field == "process")
continue;
ret[field] = si[field] - si.process
}
for (let p in appTimestamps) {
if (!(p in ret) && appTimestamps[p])
ret[p] = appTimestamps[p] - si.process;
}
}
ret.startupInterrupted = new Number(Services.startup.interrupted);
// Update debuggerAttached flag
let debugService = Cc["@mozilla.org/xpcom/debug;1"].getService(Ci.nsIDebug2);
let isDebuggerAttached = debugService.isDebuggerAttached;
gWasDebuggerAttached = gWasDebuggerAttached || isDebuggerAttached;
ret.debuggerAttached = new Number(gWasDebuggerAttached);
ret.js = Cc["@mozilla.org/js/xpc/XPConnect;1"]
.getService(Ci.nsIJSEngineTelemetryStats)
.telemetryValue;
let shutdownDuration = Telemetry.lastShutdownDuration;
if (shutdownDuration)
ret.shutdownDuration = shutdownDuration;
let failedProfileLockCount = Telemetry.failedProfileLockCount;
if (failedProfileLockCount)
ret.failedProfileLockCount = failedProfileLockCount;
let maximalNumberOfConcurrentThreads = Telemetry.maximalNumberOfConcurrentThreads;
if (maximalNumberOfConcurrentThreads)
ret.maximalNumberOfConcurrentThreads = maximalNumberOfConcurrentThreads;
for (let ioCounter in this._startupIO)
ret[ioCounter] = this._startupIO[ioCounter];
let hasPingBeenSent = false;
try {
hasPingBeenSent = Telemetry.getHistogramById("TELEMETRY_SUCCESS").snapshot().sum > 0;
} catch(e) {
}
if (!forSavedSession || hasPingBeenSent) {
ret.savedPings = this._pingsLoaded;
}
return ret;
},
/**
* When reflecting a histogram into JS, Telemetry hands us an object
* with the following properties:
*
* - min, max, histogram_type, sum, sum_squares_{lo,hi}: simple integers;
* - log_sum, log_sum_squares: doubles;
* - counts: array of counts for histogram buckets;
* - ranges: array of calculated bucket sizes.
*
* This format is not straightforward to read and potentially bulky
* with lots of zeros in the counts array. Packing histograms makes
* raw histograms easier to read and compresses the data a little bit.
*
* Returns an object:
* { range: [min, max], bucket_count: <number of buckets>,
* histogram_type: <histogram_type>, sum: <sum>,
* sum_squares_lo: <sum_squares_lo>,
* sum_squares_hi: <sum_squares_hi>,
* log_sum: <log_sum>, log_sum_squares: <log_sum_squares>,
* values: { bucket1: count1, bucket2: count2, ... } }
*/
packHistogram: function packHistogram(hgram) {
let r = hgram.ranges;;
let c = hgram.counts;
let retgram = {
range: [r[1], r[r.length - 1]],
bucket_count: r.length,
histogram_type: hgram.histogram_type,
values: {},
sum: hgram.sum
};
if (hgram.histogram_type == Telemetry.HISTOGRAM_EXPONENTIAL) {
retgram.log_sum = hgram.log_sum;
retgram.log_sum_squares = hgram.log_sum_squares;
} else {
retgram.sum_squares_lo = hgram.sum_squares_lo;
retgram.sum_squares_hi = hgram.sum_squares_hi;
}
let first = true;
let last = 0;
for (let i = 0; i < c.length; i++) {
let value = c[i];
if (!value)
continue;
// add a lower bound
if (i && first) {
retgram.values[r[i - 1]] = 0;
}
first = false;
last = i + 1;
retgram.values[r[i]] = value;
}
// add an upper bound
if (last && last < c.length)
retgram.values[r[last]] = 0;
return retgram;
},
getHistograms: function getHistograms(hls) {
let info = Telemetry.registeredHistograms;
let ret = {};
for (let name in hls) {
if (info[name]) {
ret[name] = this.packHistogram(hls[name]);
let startup_name = "STARTUP_" + name;
if (hls[startup_name])
ret[startup_name] = this.packHistogram(hls[startup_name]);
}
}
return ret;
},
getAddonHistograms: function getAddonHistograms() {
let ahs = Telemetry.addonHistogramSnapshots;
let ret = {};
for (let addonName in ahs) {
addonHistograms = ahs[addonName];
packedHistograms = {};
for (let name in addonHistograms) {
packedHistograms[name] = this.packHistogram(addonHistograms[name]);
}
if (Object.keys(packedHistograms).length != 0)
ret[addonName] = packedHistograms;
}
return ret;
},
addValue: function addValue(name, id, val) {
let h = this._histograms[name];
if (!h) {
h = Telemetry.getHistogramById(id);
this._histograms[name] = h;
}
h.add(val);
},
/**
* Descriptive metadata
*
* @param reason
* The reason for the telemetry ping, this will be included in the
* returned metadata,
* @return The metadata as a JS object
*/
getMetadata: function getMetadata(reason) {
let ai = Services.appinfo;
let ret = {
reason: reason,
OS: ai.OS,
appID: ai.ID,
appVersion: ai.version,
appName: ai.name,
appBuildID: ai.appBuildID,
appUpdateChannel: UpdateChannel.get(),
platformBuildID: ai.platformBuildID,
revision: HISTOGRAMS_FILE_VERSION,
locale: getLocale()
};
if (this._previousBuildID) {
ret.previousBuildID = this._previousBuildID;
}
// sysinfo fields are not always available, get what we can.
let sysInfo = Cc["@mozilla.org/system-info;1"].getService(Ci.nsIPropertyBag2);
let fields = ["cpucount", "memsize", "arch", "version", "kernel_version",
"device", "manufacturer", "hardware",
"hasMMX", "hasSSE", "hasSSE2", "hasSSE3",
"hasSSSE3", "hasSSE4A", "hasSSE4_1", "hasSSE4_2",
"hasEDSP", "hasARMv6", "hasARMv7", "hasNEON", "isWow64"];
for each (let field in fields) {
let value;
try {
value = sysInfo.getProperty(field);
} catch (e) {
continue;
}
if (field == "memsize") {
// Send RAM size in megabytes. Rounding because sysinfo doesn't
// always provide RAM in multiples of 1024.
value = Math.round(value / 1024 / 1024);
}
ret[field] = value;
}
// gfxInfo fields are not always available, get what we can.
let gfxInfo = Cc["@mozilla.org/gfx/info;1"].getService(Ci.nsIGfxInfo);
let gfxfields = ["adapterDescription", "adapterVendorID", "adapterDeviceID",
"adapterRAM", "adapterDriver", "adapterDriverVersion",
"adapterDriverDate", "adapterDescription2",
"adapterVendorID2", "adapterDeviceID2", "adapterRAM2",
"adapterDriver2", "adapterDriverVersion2",
"adapterDriverDate2", "isGPU2Active", "D2DEnabled",
"DWriteEnabled", "DWriteVersion"
];
if (gfxInfo) {
for each (let field in gfxfields) {
try {
let value = "";
value = gfxInfo[field];
if (value != "")
ret[field] = value;
} catch (e) {
continue
}
}
}
#ifndef MOZ_WIDGET_GONK
let theme = LightweightThemeManager.currentTheme;
if (theme)
ret.persona = theme.id;
#endif
if (this._addons)
ret.addons = this._addons;
let flashVersion = this.getFlashVersion();
if (flashVersion)
ret.flashVersion = flashVersion;
return ret;
},
/**
* Pull values from about:memory into corresponding histograms
*/
gatherMemory: function gatherMemory() {
let mgr;
try {
mgr = Cc["@mozilla.org/memory-reporter-manager;1"].
getService(Ci.nsIMemoryReporterManager);
} catch (e) {
// OK to skip memory reporters in xpcshell
return;
}
let histogram = Telemetry.getHistogramById("TELEMETRY_MEMORY_REPORTER_MS");
let startTime = new Date();
let e = mgr.enumerateReporters();
while (e.hasMoreElements()) {
let mr = e.getNext().QueryInterface(Ci.nsIMemoryReporter);
let id = MEM_HISTOGRAMS[mr.path];
if (!id) {
continue;
}
// Reading mr.amount might throw an exception. If so, just ignore that
// memory reporter; we're not getting useful data out of it.
try {
this.handleMemoryReport(id, mr.path, mr.units, mr.amount);
}
catch (e) {
}
}
histogram.add(new Date() - startTime);
},
handleMemoryReport: function handleMemoryReport(id, path, units, amount) {
if (amount == -1) {
return;
}
let val;
if (units == Ci.nsIMemoryReporter.UNITS_BYTES) {
val = Math.floor(amount / 1024);
}
else if (units == Ci.nsIMemoryReporter.UNITS_PERCENTAGE) {
// UNITS_PERCENTAGE amounts are 100x greater than their raw value.
val = Math.floor(amount / 100);
}
else if (units == Ci.nsIMemoryReporter.UNITS_COUNT) {
val = amount;
}
else if (units == Ci.nsIMemoryReporter.UNITS_COUNT_CUMULATIVE) {
// If the reporter gives us a cumulative count, we'll report the
// difference in its value between now and our previous ping.
if (!(path in this._prevValues)) {
// If this is the first time we're reading this reporter, store its
// current value but don't report it in the telemetry ping, so we
// ignore the effect startup had on the reporter.
this._prevValues[path] = amount;
return;
}
val = amount - this._prevValues[path];
this._prevValues[path] = amount;
}
else {
NS_ASSERT(false, "Can't handle memory reporter with units " + units);
return;
}
this.addValue(path, id, val);
},
/**
* Return true if we're interested in having a STARTUP_* histogram for
* the given histogram name.
*/
isInterestingStartupHistogram: function isInterestingStartupHistogram(name) {
return this._startupHistogramRegex.test(name);
},
/**
* Make a copy of interesting histograms at startup.
*/
gatherStartupHistograms: function gatherStartupHistograms() {
let info = Telemetry.registeredHistograms;
let snapshots = Telemetry.histogramSnapshots;
for (let name in info) {
// Only duplicate histograms with actual data.
if (this.isInterestingStartupHistogram(name) && name in snapshots) {
Telemetry.histogramFrom("STARTUP_" + name, name);
}
}
},
/**
* Get the current session's payload using the provided
* simpleMeasurements and info, which are typically obtained by a call
* to |this.getSimpleMeasurements| and |this.getMetadata|,
* respectively.
*/
assemblePayloadWithMeasurements: function assemblePayloadWithMeasurements(simpleMeasurements, info) {
let payloadObj = {
ver: PAYLOAD_VERSION,
simpleMeasurements: simpleMeasurements,
histograms: this.getHistograms(Telemetry.histogramSnapshots),
slowSQL: Telemetry.slowSQL,
chromeHangs: Telemetry.chromeHangs,
lateWrites: Telemetry.lateWrites,
addonHistograms: this.getAddonHistograms(),
info: info
};
if (Object.keys(this._slowSQLStartup.mainThread).length
|| Object.keys(this._slowSQLStartup.otherThreads).length) {
payloadObj.slowSQLStartup = this._slowSQLStartup;
}
return payloadObj;
},
getSessionPayload: function getSessionPayload(reason) {
let measurements = this.getSimpleMeasurements(reason == "saved-session");
let info = this.getMetadata(reason);
return this.assemblePayloadWithMeasurements(measurements, info);
},
assemblePing: function assemblePing(payloadObj, reason) {
let slug = this._uuid;
return { slug: slug, reason: reason, payload: JSON.stringify(payloadObj) };
},
getSessionPayloadAndSlug: function getSessionPayloadAndSlug(reason) {
return this.assemblePing(this.getSessionPayload(reason), reason);
},
getPayloads: function getPayloads(reason) {
function payloadIter() {
yield this.getSessionPayloadAndSlug(reason);
while (this._pendingPings.length > 0) {
let data = this._pendingPings.pop();
// Send persisted pings to the test URL too.
if (reason == "test-ping") {
data.reason = reason;
}
yield data;
}
}
let payloadIterWithThis = payloadIter.bind(this);
return { __iterator__: payloadIterWithThis };
},
/**
* Send data to the server. Record success/send-time in histograms
*/
send: function send(reason, server) {
// populate histograms one last time
this.gatherMemory();
this.sendPingsFromIterator(server, reason,
Iterator(this.getPayloads(reason)));
},
/**
* What we want to do is the following:
*
* for data in getPayloads(reason):
* if sending ping data to server failed:
* break;
*
* but we can't do that, since XMLHttpRequest is async. What we do
* instead is let this function control the essential looping logic
* and provide callbacks for XMLHttpRequest when a request has
* finished.
*/
sendPingsFromIterator: function sendPingsFromIterator(server, reason, i) {
function finishPings(reason) {
if (reason == "test-ping") {
Services.obs.notifyObservers(null, "telemetry-test-xhr-complete", null);
}
}
let data = null;
try {
data = i.next();
} catch (e if e instanceof StopIteration) {
finishPings(reason);
return;
}
function onSuccess() {
this.sendPingsFromIterator(server, reason, i);
}
function onError() {
this.savePing(data, true);
// Notify that testing is complete, even if we didn't send everything.
finishPings(reason);
}
this.doPing(server, data,
onSuccess.bind(this), onError.bind(this));
},
finishPingRequest: function finishPingRequest(success, startTime, ping) {
let hping = Telemetry.getHistogramById("TELEMETRY_PING");
let hsuccess = Telemetry.getHistogramById("TELEMETRY_SUCCESS");
hsuccess.add(success);
hping.add(new Date() - startTime);
if (success) {
let file = this.saveFileForPing(ping);
try {
file.remove(true);
} catch(e) {
}
}
},
doPing: function doPing(server, ping, onSuccess, onError) {
let submitPath = "/submit/telemetry/" + (ping.reason == "test-ping"
? "test-ping"
: ping.slug);
let url = server + submitPath;
let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]
.createInstance(Ci.nsIXMLHttpRequest);
request.mozBackgroundRequest = true;
request.open("POST", url, true);
request.overrideMimeType("text/plain");
request.setRequestHeader("Content-Type", "application/json; charset=UTF-8");
let startTime = new Date();
function handler(success, callback) {
return function(event) {
this.finishPingRequest(success, startTime, ping);
callback();
};
}
request.addEventListener("error", handler(false, onError).bind(this), false);
request.addEventListener("load", handler(true, onSuccess).bind(this), false);
request.setRequestHeader("Content-Encoding", "gzip");
let payloadStream = Cc["@mozilla.org/io/string-input-stream;1"]
.createInstance(Ci.nsIStringInputStream);
payloadStream.data = this.gzipCompressString(ping.payload);
request.send(payloadStream);
},
gzipCompressString: function gzipCompressString(string) {
let observer = {
buffer: "",
onStreamComplete: function(loader, context, status, length, result) {
this.buffer = String.fromCharCode.apply(this, result);
}
};
let scs = Cc["@mozilla.org/streamConverters;1"]
.getService(Ci.nsIStreamConverterService);
let listener = Cc["@mozilla.org/network/stream-loader;1"]
.createInstance(Ci.nsIStreamLoader);
listener.init(observer);
let converter = scs.asyncConvertData("uncompressed", "gzip",
listener, null);
let stringStream = Cc["@mozilla.org/io/string-input-stream;1"]
.createInstance(Ci.nsIStringInputStream);
stringStream.data = string;
converter.onStartRequest(null, null);
converter.onDataAvailable(null, null, stringStream, 0, string.length);
converter.onStopRequest(null, null, null);
return observer.buffer;
},
attachObservers: function attachObservers() {
if (!this._initialized)
return;
Services.obs.addObserver(this, "cycle-collector-begin", false);
Services.obs.addObserver(this, "idle-daily", false);
},
detachObservers: function detachObservers() {
if (!this._initialized)
return;
Services.obs.removeObserver(this, "idle-daily");
Services.obs.removeObserver(this, "cycle-collector-begin");
if (this._isIdleObserver) {
idleService.removeIdleObserver(this, IDLE_TIMEOUT_SECONDS);
this._isIdleObserver = false;
}
},
/**
* Initializes telemetry within a timer. If there is no PREF_SERVER set, don't turn on telemetry.
*/
setup: function setup() {
// Record old value and update build ID preference if this is the first
// run with a new build ID.
let previousBuildID = undefined;
try {
previousBuildID = Services.prefs.getCharPref(PREF_PREVIOUS_BUILDID);
} catch (e) {
// Preference was not set.
}
let thisBuildID = Services.appinfo.appBuildID;
// If there is no previousBuildID preference, this._previousBuildID remains
// undefined so no value is sent in the telemetry metadata.
if (previousBuildID != thisBuildID) {
this._previousBuildID = previousBuildID;
Services.prefs.setCharPref(PREF_PREVIOUS_BUILDID, thisBuildID);
}
#ifdef MOZILLA_OFFICIAL
if (!Telemetry.canSend) {
// We can't send data; no point in initializing observers etc.
// Only do this for official builds so that e.g. developer builds
// still enable Telemetry based on prefs.
Telemetry.canRecord = false;
return;
}
#endif
let enabled = false;
try {
enabled = Services.prefs.getBoolPref(PREF_ENABLED);
this._server = Services.prefs.getCharPref(PREF_SERVER);
} catch (e) {
// Prerequesite prefs aren't set
}
if (!enabled) {
// Turn off local telemetry if telemetry is disabled.
// This may change once about:telemetry is added.
Telemetry.canRecord = false;
return;
}
Services.obs.addObserver(this, "profile-before-change2", false);
Services.obs.addObserver(this, "sessionstore-windows-restored", false);
Services.obs.addObserver(this, "quit-application-granted", false);
#ifdef MOZ_WIDGET_ANDROID
Services.obs.addObserver(this, "application-background", false);
#endif
Services.obs.addObserver(this, "xul-window-visible", false);
this._hasWindowRestoredObserver = true;
this._hasXulWindowVisibleObserver = true;
// Delay full telemetry initialization to give the browser time to
// run various late initializers. Otherwise our gathered memory
// footprint and other numbers would be too optimistic.
this._timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
function timerCallback() {
this._initialized = true;
this.loadSavedPings(false);
this.attachObservers();
this.gatherMemory();
Telemetry.asyncFetchTelemetryData(function () {
});
delete this._timer;
}
this._timer.initWithCallback(timerCallback.bind(this), TELEMETRY_DELAY,
Ci.nsITimer.TYPE_ONE_SHOT);
},
addToPendingPings: function addToPendingPings(file, stream) {
let success = false;
try {
let string = NetUtil.readInputStreamToString(stream, stream.available(), { charset: "UTF-8" });
stream.close();
let ping = JSON.parse(string);
this._pingLoadsCompleted++;
this._pendingPings.push(ping);
if (this._doLoadSaveNotifications &&
this._pingLoadsCompleted == this._pingsLoaded) {
Services.obs.notifyObservers(null, "telemetry-test-load-complete", null);
}
success = true;
} catch (e) {
// An error reading the file, or an error parsing the contents.
stream.close(); // close is idempotent.
file.remove(true);
}
let success_histogram = Telemetry.getHistogramById("READ_SAVED_PING_SUCCESS");
success_histogram.add(success);
},
loadHistograms: function loadHistograms(file, sync) {
let now = new Date();
if (now - file.lastModifiedTime > MAX_PING_FILE_AGE) {
// We haven't had much luck in sending this file; delete it.
file.remove(true);
return;
}
this._pingsLoaded++;
if (sync) {
let stream = Cc["@mozilla.org/network/file-input-stream;1"]
.createInstance(Ci.nsIFileInputStream);
stream.init(file, -1, -1, 0);
this.addToPendingPings(file, stream);
} else {
let channel = NetUtil.newChannel(file);
channel.contentType = "application/json"
NetUtil.asyncFetch(channel, (function(stream, result) {
if (!Components.isSuccessCode(result)) {
return;
}
this.addToPendingPings(file, stream);
}).bind(this));
}
},
testLoadHistograms: function testLoadHistograms(file, sync) {
this._pingsLoaded = 0;
this._pingLoadsCompleted = 0;
this.loadHistograms(file, sync);
},
loadSavedPings: function loadSavedPings(sync) {
let directory = this.ensurePingDirectory();
let entries = directory.directoryEntries
.QueryInterface(Ci.nsIDirectoryEnumerator);
this._pingsLoaded = 0;
this._pingLoadsCompleted = 0;
try {
while (entries.hasMoreElements()) {
this.loadHistograms(entries.nextFile, sync);
}
}
finally {
entries.close();
}
},
finishTelemetrySave: function finishTelemetrySave(ok, stream) {
stream.close();
if (this._doLoadSaveNotifications && ok) {
Services.obs.notifyObservers(null, "telemetry-test-save-complete", null);
}
},
savePingToFile: function savePingToFile(ping, file, sync, overwrite) {
let pingString = JSON.stringify(ping);
let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
.createInstance(Ci.nsIScriptableUnicodeConverter);
converter.charset = "UTF-8";
let ostream = Cc["@mozilla.org/network/file-output-stream;1"]
.createInstance(Ci.nsIFileOutputStream);
let initFlags = PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE;
if (!overwrite) {
initFlags |= PR_EXCL;
}
try {
ostream.init(file, initFlags, RW_OWNER, 0);
} catch (e) {
// Probably due to PR_EXCL.
return;
}
if (sync) {
let utf8String = converter.ConvertFromUnicode(pingString);
utf8String += converter.Finish();
let success = false;
try {
let amount = ostream.write(utf8String, utf8String.length);
success = amount == utf8String.length;
} catch (e) {
}
this.finishTelemetrySave(success, ostream);
} else {
let istream = converter.convertToInputStream(pingString)
let self = this;
NetUtil.asyncCopy(istream, ostream,
function(result) {
self.finishTelemetrySave(Components.isSuccessCode(result),
ostream);
});
}
},
getFlashVersion: function getFlashVersion() {
let host = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost);
let tags = host.getPluginTags();
for (let i = 0; i < tags.length; i++) {
if (tags[i].name == "Shockwave Flash")
return tags[i].version;
}
return null;
},
ensurePingDirectory: function ensurePingDirectory() {
let directory = this._savedProfileDirectory.clone();
directory.append("saved-telemetry-pings");
try {
directory.create(Ci.nsIFile.DIRECTORY_TYPE, RWX_OWNER);
} catch (e) {
// Already exists, just ignore this.
}
return directory;
},
saveFileForPing: function saveFileForPing(ping) {
let file = this.ensurePingDirectory();
file.append(ping.slug);
return file;
},
savePing: function savePing(ping, overwrite) {
this.savePingToFile(ping, this.saveFileForPing(ping), true, overwrite);
},
savePendingPings: function savePendingPings() {
let sessionPing = this.getSessionPayloadAndSlug("saved-session");
this.savePing(sessionPing, true);
this._pendingPings.forEach(function sppcb(e, i, a) {
this.savePing(e, false);
}, this);
this._pendingPings = [];
},
saveHistograms: function saveHistograms(file, sync) {
this.savePingToFile(this.getSessionPayloadAndSlug("saved-session"),
file, sync, true);
},
/**
* Remove observers to avoid leaks
*/
uninstall: function uninstall() {
this.detachObservers()
if (this._hasWindowRestoredObserver) {
Services.obs.removeObserver(this, "sessionstore-windows-restored");
this._hasWindowRestoredObserver = false;
}
if (this._hasXulWindowVisibleObserver) {
Services.obs.removeObserver(this, "xul-window-visible");
this._hasXulWindowVisibleObserver = false;
}
Services.obs.removeObserver(this, "profile-before-change2");
Services.obs.removeObserver(this, "quit-application-granted");
#ifdef MOZ_WIDGET_ANDROID
Services.obs.removeObserver(this, "application-background", false);
#endif
},
getPayload: function getPayload() {
// This function returns the current Telemetry payload to the caller.
// We only gather startup info once.
if (Object.keys(this._slowSQLStartup).length == 0) {
this.gatherStartupHistograms();
this._slowSQLStartup = Telemetry.slowSQL;
}
this.gatherMemory();
return this.getSessionPayload("gather-payload");
},
gatherStartup: function gatherStartup() {
let counters = processInfo.getCounters();
if (counters) {
[this._startupIO.startupSessionRestoreReadBytes,
this._startupIO.startupSessionRestoreWriteBytes] = counters;
}
this.gatherStartupHistograms();
this._slowSQLStartup = Telemetry.slowSQL;
},
enableLoadSaveNotifications: function enableLoadSaveNotifications() {
this._doLoadSaveNotifications = true;
},
setAddOns: function setAddOns(aAddOns) {
this._addons = aAddOns;
},
sendIdlePing: function sendIdlePing(aTest, aServer) {
if (this._isIdleObserver) {
idleService.removeIdleObserver(this, IDLE_TIMEOUT_SECONDS);
this._isIdleObserver = false;
}
if (aTest) {
this.send("test-ping", aServer);
} else if (Telemetry.canSend) {
this.send("idle-daily", aServer);
}
},
testPing: function testPing(server) {
this.sendIdlePing(true, server);
},
cacheProfileDirectory: function cacheProfileDirectory() {
this._savedProfileDirectory = Services.dirsvc.get("ProfD", Ci.nsILocalFile);
},
/**
* This observer drives telemetry.
*/
observe: function (aSubject, aTopic, aData) {
switch (aTopic) {
case "profile-after-change":
this.setup();
this.cacheProfileDirectory();
break;
case "cycle-collector-begin":
let now = new Date();
if (!gLastMemoryPoll
|| (TELEMETRY_INTERVAL <= now - gLastMemoryPoll)) {
gLastMemoryPoll = now;
this.gatherMemory();
}
break;
case "xul-window-visible":
Services.obs.removeObserver(this, "xul-window-visible");
this._hasXulWindowVisibleObserver = false;
var counters = processInfo.getCounters();
if (counters) {
[this._startupIO.startupWindowVisibleReadBytes,
this._startupIO.startupWindowVisibleWriteBytes] = counters;
}
break;
case "sessionstore-windows-restored":
Services.obs.removeObserver(this, "sessionstore-windows-restored");
this._hasWindowRestoredObserver = false;
// Check whether debugger was attached during startup
let debugService = Cc["@mozilla.org/xpcom/debug;1"].getService(Ci.nsIDebug2);
gWasDebuggerAttached = debugService.isDebuggerAttached;
this.gatherStartup();
break;
case "idle-daily":
// Enqueue to main-thread, otherwise components may be inited by the
// idle-daily category and miss the gather-telemetry notification.
Services.tm.mainThread.dispatch((function() {
// Notify that data should be gathered now, since ping will happen soon.
Services.obs.notifyObservers(null, "gather-telemetry", null);
// The ping happens at the first idle of length IDLE_TIMEOUT_SECONDS.
idleService.addIdleObserver(this, IDLE_TIMEOUT_SECONDS);
this._isIdleObserver = true;
}).bind(this), Ci.nsIThread.DISPATCH_NORMAL);
break;
case "idle":
this.sendIdlePing(false, this._server);
break;
case "profile-before-change2":
this.uninstall();
if (Telemetry.canSend) {
this.savePendingPings();
}
break;
#ifdef MOZ_WIDGET_ANDROID
// On Android, we can get killed without warning once we are in the background,
// but we may also submit data and/or come back into the foreground without getting
// killed. To deal with this, we save the current session data to file when we are
// put into the background. This handles the following post-backgrounding scenarios:
// 1) We are killed immediately. In this case the current session data (which we
// save to a file) will be loaded and submitted on a future run.
// 2) We submit the data while in the background, and then are killed. In this case
// the file that we saved will be deleted by the usual process in
// finishPingRequest after it is submitted.
// 3) We submit the data, and then come back into the foreground. Same as case (2).
// 4) We do not submit the data, but come back into the foreground. In this case
// we have the option of either deleting the file that we saved (since we will either
// send the live data while in the foreground, or create the file again on the next
// backgrounding), or not (in which case we will delete it on submit, or overwrite
// it on the next backgrounding). Not deleting it is faster, so that's what we do.
case "application-background":
if (Telemetry.canSend) {
let ping = this.getSessionPayloadAndSlug("saved-session");
this.savePing(ping, true);
}
break;
#endif
}
},
classID: Components.ID("{55d6a5fa-130e-4ee6-a158-0133af3b86ba}"),
QueryInterface: XPCOMUtils.generateQI([Ci.nsITelemetryPing, Ci.nsIObserver]),
};
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([TelemetryPing]);