diff options
Diffstat (limited to 'toolkit/components/telemetry/app/TelemetrySend.sys.mjs')
| -rw-r--r-- | toolkit/components/telemetry/app/TelemetrySend.sys.mjs | 1701 |
1 files changed, 1701 insertions, 0 deletions
diff --git a/toolkit/components/telemetry/app/TelemetrySend.sys.mjs b/toolkit/components/telemetry/app/TelemetrySend.sys.mjs new file mode 100644 index 0000000000..25abfd6da1 --- /dev/null +++ b/toolkit/components/telemetry/app/TelemetrySend.sys.mjs @@ -0,0 +1,1701 @@ +/* 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/. */ + +/* + * This module is responsible for uploading pings to the server and persisting + * pings that can't be send now. + * Those pending pings are persisted on disk and sent at the next opportunity, + * newest first. + */ + +import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs"; + +import { ClientID } from "resource://gre/modules/ClientID.sys.mjs"; +import { Log } from "resource://gre/modules/Log.sys.mjs"; +import { ServiceRequest } from "resource://gre/modules/ServiceRequest.sys.mjs"; + +import { TelemetryUtils } from "resource://gre/modules/TelemetryUtils.sys.mjs"; +import { clearTimeout, setTimeout } from "resource://gre/modules/Timer.sys.mjs"; + +const lazy = {}; + +ChromeUtils.defineESModuleGetters(lazy, { + NimbusFeatures: "resource://nimbus/ExperimentAPI.sys.mjs", + TelemetryHealthPing: "resource://gre/modules/HealthPing.sys.mjs", + TelemetryReportingPolicy: + "resource://gre/modules/TelemetryReportingPolicy.sys.mjs", + TelemetryStorage: "resource://gre/modules/TelemetryStorage.sys.mjs", +}); + +const Utils = TelemetryUtils; + +const LOGGER_NAME = "Toolkit.Telemetry"; +const LOGGER_PREFIX = "TelemetrySend::"; + +const TOPIC_IDLE_DAILY = "idle-daily"; +// The following topics are notified when Firefox is closing +// because the OS is shutting down. +const TOPIC_QUIT_APPLICATION_GRANTED = "quit-application-granted"; +const TOPIC_QUIT_APPLICATION_FORCED = "quit-application-forced"; +const PREF_CHANGED_TOPIC = "nsPref:changed"; +const TOPIC_PROFILE_CHANGE_NET_TEARDOWN = "profile-change-net-teardown"; + +// Whether the FHR/Telemetry unification features are enabled. +// Changing this pref requires a restart. +const IS_UNIFIED_TELEMETRY = Services.prefs.getBoolPref( + TelemetryUtils.Preferences.Unified, + false +); + +const MS_IN_A_MINUTE = 60 * 1000; + +const PING_TYPE_DELETION_REQUEST = "deletion-request"; + +// We try to spread "midnight" pings out over this interval. +const MIDNIGHT_FUZZING_INTERVAL_MS = 60 * MS_IN_A_MINUTE; +// We delay sending "midnight" pings on this client by this interval. +const MIDNIGHT_FUZZING_DELAY_MS = Math.random() * MIDNIGHT_FUZZING_INTERVAL_MS; + +// Timeout after which we consider a ping submission failed. +export const PING_SUBMIT_TIMEOUT_MS = 1.5 * MS_IN_A_MINUTE; + +// To keep resource usage in check, we limit ping sending to a maximum number +// of pings per minute. +const MAX_PING_SENDS_PER_MINUTE = 10; + +// If we have more pending pings then we can send right now, we schedule the next +// send for after SEND_TICK_DELAY. +const SEND_TICK_DELAY = 1 * MS_IN_A_MINUTE; +// If we had any ping send failures since the last ping, we use a backoff timeout +// for the next ping sends. We increase the delay exponentially up to a limit of +// SEND_MAXIMUM_BACKOFF_DELAY_MS. +// This exponential backoff will be reset by external ping submissions & idle-daily. +const SEND_MAXIMUM_BACKOFF_DELAY_MS = 120 * MS_IN_A_MINUTE; + +// Strings to map from XHR.errorCode to TELEMETRY_SEND_FAILURE_TYPE. +// Echoes XMLHttpRequestMainThread's ErrorType enum. +// Make sure that any additions done to XHR_ERROR_TYPE enum are also mirrored in +// TELEMETRY_SEND_FAILURE_TYPE and TELEMETRY_SEND_FAILURE_TYPE_PER_PING's labels. +const XHR_ERROR_TYPE = [ + "eOK", + "eRequest", + "eUnreachable", + "eChannelOpen", + "eRedirect", + "eTerminated", +]; + +/** + * This is a policy object used to override behavior within this module. + * Tests override properties on this object to allow for control of behavior + * that would otherwise be very hard to cover. + */ +export var Policy = { + now: () => new Date(), + midnightPingFuzzingDelay: () => MIDNIGHT_FUZZING_DELAY_MS, + pingSubmissionTimeout: () => PING_SUBMIT_TIMEOUT_MS, + setSchedulerTickTimeout: (callback, delayMs) => setTimeout(callback, delayMs), + clearSchedulerTickTimeout: id => clearTimeout(id), + gzipCompressString: data => gzipCompressString(data), +}; + +/** + * Determine if the ping has the new v4 ping format or the legacy v2 one or earlier. + */ +function isV4PingFormat(aPing) { + return ( + "id" in aPing && + "application" in aPing && + "version" in aPing && + aPing.version >= 2 + ); +} + +/** + * Check if the provided ping is a deletion-request ping. + * @param {Object} aPing The ping to check. + * @return {Boolean} True if the ping is a deletion-request ping, false otherwise. + */ +function isDeletionRequestPing(aPing) { + return isV4PingFormat(aPing) && aPing.type == PING_TYPE_DELETION_REQUEST; +} + +/** + * Save the provided ping as a pending ping. + * @param {Object} aPing The ping to save. + * @return {Promise} A promise resolved when the ping is saved. + */ +function savePing(aPing) { + return lazy.TelemetryStorage.savePendingPing(aPing); +} + +function arrayToString(array) { + let buffer = ""; + // String.fromCharCode can only deal with 500,000 characters at + // a time, so chunk the result into parts of that size. + const chunkSize = 500000; + for (let offset = 0; offset < array.length; offset += chunkSize) { + buffer += String.fromCharCode.apply( + String, + array.slice(offset, offset + chunkSize) + ); + } + return buffer; +} + +/** + * @return {String} This returns a string with the gzip compressed data. + */ +export function gzipCompressString(string) { + let observer = { + buffer: null, + onStreamComplete(loader, context, status, length, result) { + this.buffer = arrayToString(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, stringStream, 0, string.length); + converter.onStopRequest(null, null, null); + return observer.buffer; +} + +const STANDALONE_PING_TIMEOUT = 30 * 1000; // 30 seconds + +export function sendStandalonePing(endpoint, payload, extraHeaders = {}) { + return new Promise((resolve, reject) => { + let request = new ServiceRequest({ mozAnon: true }); + request.mozBackgroundRequest = true; + request.timeout = STANDALONE_PING_TIMEOUT; + + request.open("POST", endpoint, true); + request.overrideMimeType("text/plain"); + request.setRequestHeader("Content-Type", "application/json; charset=UTF-8"); + request.setRequestHeader("Content-Encoding", "gzip"); + request.setRequestHeader("Date", new Date().toUTCString()); + for (let header in extraHeaders) { + request.setRequestHeader(header, extraHeaders[header]); + } + + request.onload = event => { + if (request.status !== 200) { + reject(event); + } else { + resolve(event); + } + }; + request.onerror = reject; + request.onabort = reject; + request.ontimeout = reject; + + let payloadStream = Cc[ + "@mozilla.org/io/string-input-stream;1" + ].createInstance(Ci.nsIStringInputStream); + + const utf8Payload = new TextEncoder().encode(payload); + + payloadStream.data = gzipCompressString(arrayToString(utf8Payload)); + request.sendInputStream(payloadStream); + }); +} + +export var TelemetrySend = { + get pendingPingCount() { + return TelemetrySendImpl.pendingPingCount; + }, + + /** + * Partial setup that runs immediately at startup. This currently triggers + * the crash report annotations. + */ + earlyInit() { + TelemetrySendImpl.earlyInit(); + }, + + /** + * Initializes this module. + * + * @param {Boolean} testing Whether this is run in a test. This changes some behavior + * to enable proper testing. + * @return {Promise} Resolved when setup is finished. + */ + setup(testing = false) { + return TelemetrySendImpl.setup(testing); + }, + + /** + * Shutdown this module - this will cancel any pending ping tasks and wait for + * outstanding async activity like network and disk I/O. + * + * @return {Promise} Promise that is resolved when shutdown is finished. + */ + shutdown() { + return TelemetrySendImpl.shutdown(); + }, + + /** + * Flushes all pings to pingsender that were both + * 1. submitted after profile-change-net-teardown, and + * 2. wanting to be sent using pingsender. + */ + flushPingSenderBatch() { + TelemetrySendImpl.flushPingSenderBatch(); + }, + + /** + * Submit a ping for sending. This will: + * - send the ping right away if possible or + * - save the ping to disk and send it at the next opportunity + * + * @param {Object} ping The ping data to send, must be serializable to JSON. + * @param {Object} [aOptions] Options object. + * @param {Boolean} [options.usePingSender=false] if true, send the ping using the PingSender. + * @return {Promise} Test-only - a promise that is resolved when the ping is sent or saved. + */ + submitPing(ping, options = {}) { + options.usePingSender = options.usePingSender || false; + return TelemetrySendImpl.submitPing(ping, options); + }, + + /** + * Check if sending is disabled. If Telemetry is not allowed to upload, + * pings are not sent to the server. + * If trying to send a deletion-request ping, don't block it. + * + * @param {Object} [ping=null] A ping to be checked. + * @return {Boolean} True if pings can be send to the servers, false otherwise. + */ + sendingEnabled(ping = null) { + return TelemetrySendImpl.sendingEnabled(ping); + }, + + /** + * Notify that we can start submitting data to the servers. + */ + notifyCanUpload() { + return TelemetrySendImpl.notifyCanUpload(); + }, + + /** + * Only used in tests. Used to reset the module data to emulate a restart. + */ + reset() { + return TelemetrySendImpl.reset(); + }, + + /** + * Only used in tests. + */ + setServer(server) { + return TelemetrySendImpl.setServer(server); + }, + + /** + * Clear out unpersisted, yet to be sent, pings and cancel outgoing ping requests. + */ + clearCurrentPings() { + return TelemetrySendImpl.clearCurrentPings(); + }, + + /** + * Only used in tests to wait on outgoing pending pings. + */ + testWaitOnOutgoingPings() { + return TelemetrySendImpl.promisePendingPingActivity(); + }, + + /** + * Only used in tests to set whether it is too late in shutdown to send pings. + */ + testTooLateToSend(tooLate) { + TelemetrySendImpl._tooLateToSend = tooLate; + }, + + /** + * Test-only - this allows overriding behavior to enable ping sending in debug builds. + */ + setTestModeEnabled(testing) { + TelemetrySendImpl.setTestModeEnabled(testing); + }, + + /** + * This returns state info for this module for AsyncShutdown timeout diagnostics. + */ + getShutdownState() { + return TelemetrySendImpl.getShutdownState(); + }, + + /** + * Send a ping using the ping sender. + * This method will not wait for the ping to be sent, instead it will return + * as soon as the pingsender program has been launched. + * + * This method is currently exposed here only for testing purposes as it's + * only used internally. + * + * @param {Array}<Object> pings An array of objects holding url / path pairs + * for each ping to be sent. The URL represent the telemetry server the + * ping will be sent to and the path points to the ping data. The ping + * data files will be deleted if the pings have been submitted + * successfully. + * @param {callback} observer A function called with parameters + * (subject, topic, data) and a topic of "process-finished" or + * "process-failed" after pingsender completion. + * + * @throws NS_ERROR_FAILURE if we couldn't find or run the pingsender + * executable. + * @throws NS_ERROR_NOT_IMPLEMENTED on Android as the pingsender is not + * available. + */ + testRunPingSender(pings, observer) { + return TelemetrySendImpl.runPingSender(pings, observer); + }, +}; + +var CancellableTimeout = { + _deferred: null, + _timer: null, + + /** + * This waits until either the given timeout passed or the timeout was cancelled. + * + * @param {Number} timeoutMs The timeout in ms. + * @return {Promise<bool>} Promise that is resolved with false if the timeout was cancelled, + * false otherwise. + */ + promiseWaitOnTimeout(timeoutMs) { + if (!this._deferred) { + this._deferred = Promise.withResolvers(); + this._timer = Policy.setSchedulerTickTimeout( + () => this._onTimeout(), + timeoutMs + ); + } + + return this._deferred.promise; + }, + + _onTimeout() { + if (this._deferred) { + this._deferred.resolve(false); + this._timer = null; + this._deferred = null; + } + }, + + cancelTimeout() { + if (this._deferred) { + Policy.clearSchedulerTickTimeout(this._timer); + this._deferred.resolve(true); + this._timer = null; + this._deferred = null; + } + }, +}; + +/** + * SendScheduler implements the timer & scheduling behavior for ping sends. + */ +export var SendScheduler = { + // Whether any ping sends failed since the last tick. If yes, we start with our exponential + // backoff timeout. + _sendsFailed: false, + // The current retry delay after ping send failures. We use this for the exponential backoff, + // increasing this value everytime we had send failures since the last tick. + _backoffDelay: SEND_TICK_DELAY, + _shutdown: false, + _sendTask: null, + // A string that tracks the last seen send task state, null if it never ran. + _sendTaskState: null, + + _logger: null, + + get _log() { + if (!this._logger) { + this._logger = Log.repository.getLoggerWithMessagePrefix( + LOGGER_NAME, + LOGGER_PREFIX + "Scheduler::" + ); + } + + return this._logger; + }, + + shutdown() { + this._log.trace("shutdown"); + this._shutdown = true; + CancellableTimeout.cancelTimeout(); + return Promise.resolve(this._sendTask); + }, + + start() { + this._log.trace("start"); + this._sendsFailed = false; + this._backoffDelay = SEND_TICK_DELAY; + this._shutdown = false; + }, + + /** + * Only used for testing, resets the state to emulate a restart. + */ + reset() { + this._log.trace("reset"); + return this.shutdown().then(() => this.start()); + }, + + /** + * Notify the scheduler of a failure in sending out pings that warrants retrying. + * This will trigger the exponential backoff timer behavior on the next tick. + */ + notifySendsFailed() { + this._log.trace("notifySendsFailed"); + if (this._sendsFailed) { + return; + } + + this._sendsFailed = true; + this._log.trace("notifySendsFailed - had send failures"); + }, + + /** + * Returns whether ping submissions are currently throttled. + */ + isThrottled() { + const now = Policy.now(); + const nextPingSendTime = this._getNextPingSendTime(now); + return nextPingSendTime > now.getTime(); + }, + + waitOnSendTask() { + return Promise.resolve(this._sendTask); + }, + + triggerSendingPings(immediately) { + this._log.trace( + "triggerSendingPings - active send task: " + + !!this._sendTask + + ", immediately: " + + immediately + ); + + if (!this._sendTask) { + this._sendTask = this._doSendTask(); + let clear = () => (this._sendTask = null); + this._sendTask.then(clear, clear); + } else if (immediately) { + CancellableTimeout.cancelTimeout(); + } + + return this._sendTask; + }, + + async _doSendTask() { + this._sendTaskState = "send task started"; + this._backoffDelay = SEND_TICK_DELAY; + this._sendsFailed = false; + + const resetBackoffTimer = () => { + this._backoffDelay = SEND_TICK_DELAY; + }; + + for (;;) { + this._log.trace("_doSendTask iteration"); + this._sendTaskState = "start iteration"; + + if (this._shutdown) { + this._log.trace("_doSendTask - shutting down, bailing out"); + this._sendTaskState = "bail out - shutdown check"; + return; + } + + // Get a list of pending pings, sorted by last modified, descending. + // Filter out all the pings we can't send now. This addresses scenarios like "deletion-request" pings + // which can be sent even when upload is disabled. + let pending = lazy.TelemetryStorage.getPendingPingList(); + let current = TelemetrySendImpl.getUnpersistedPings(); + this._log.trace( + "_doSendTask - pending: " + + pending.length + + ", current: " + + current.length + ); + // Note that the two lists contain different kind of data. |pending| only holds ping + // info, while |current| holds actual ping data. + if (!TelemetrySendImpl.sendingEnabled()) { + // If sending is disabled, only handle deletion-request pings + pending = []; + current = current.filter(p => isDeletionRequestPing(p)); + } + this._log.trace( + "_doSendTask - can send - pending: " + + pending.length + + ", current: " + + current.length + ); + + // Bail out if there is nothing to send. + if (!pending.length && !current.length) { + this._log.trace("_doSendTask - no pending pings, bailing out"); + this._sendTaskState = "bail out - no pings to send"; + return; + } + + // If we are currently throttled (e.g. fuzzing to avoid midnight spikes), wait for the next send window. + const now = Policy.now(); + if (this.isThrottled()) { + const nextPingSendTime = this._getNextPingSendTime(now); + this._log.trace( + "_doSendTask - throttled, delaying ping send to " + + new Date(nextPingSendTime) + ); + this._sendTaskState = "wait for throttling to pass"; + + const delay = nextPingSendTime - now.getTime(); + const cancelled = await CancellableTimeout.promiseWaitOnTimeout(delay); + if (cancelled) { + this._log.trace( + "_doSendTask - throttling wait was cancelled, resetting backoff timer" + ); + resetBackoffTimer(); + } + + continue; + } + + let sending = pending.slice(0, MAX_PING_SENDS_PER_MINUTE); + pending = pending.slice(MAX_PING_SENDS_PER_MINUTE); + this._log.trace( + "_doSendTask - triggering sending of " + + sending.length + + " pings now" + + ", " + + pending.length + + " pings waiting" + ); + + this._sendsFailed = false; + const sendStartTime = Policy.now(); + this._sendTaskState = "wait on ping sends"; + await TelemetrySendImpl.sendPings( + current, + sending.map(p => p.id) + ); + if (this._shutdown || TelemetrySend.pendingPingCount == 0) { + this._log.trace( + "_doSendTask - bailing out after sending, shutdown: " + + this._shutdown + + ", pendingPingCount: " + + TelemetrySend.pendingPingCount + ); + this._sendTaskState = "bail out - shutdown & pending check after send"; + return; + } + + // Calculate the delay before sending the next batch of pings. + // We start with a delay that makes us send max. 1 batch per minute. + // If we had send failures in the last batch, we will override this with + // a backoff delay. + const timeSinceLastSend = Policy.now() - sendStartTime; + let nextSendDelay = Math.max(0, SEND_TICK_DELAY - timeSinceLastSend); + + if (!this._sendsFailed) { + this._log.trace( + "_doSendTask - had no send failures, resetting backoff timer" + ); + resetBackoffTimer(); + } else { + const newDelay = Math.min( + SEND_MAXIMUM_BACKOFF_DELAY_MS, + this._backoffDelay * 2 + ); + this._log.trace( + "_doSendTask - had send failures, backing off -" + + " old timeout: " + + this._backoffDelay + + ", new timeout: " + + newDelay + ); + this._backoffDelay = newDelay; + nextSendDelay = this._backoffDelay; + } + + this._log.trace( + "_doSendTask - waiting for next send opportunity, timeout is " + + nextSendDelay + ); + this._sendTaskState = "wait on next send opportunity"; + const cancelled = await CancellableTimeout.promiseWaitOnTimeout( + nextSendDelay + ); + if (cancelled) { + this._log.trace( + "_doSendTask - batch send wait was cancelled, resetting backoff timer" + ); + resetBackoffTimer(); + } + } + }, + + /** + * This helper calculates the next time that we can send pings at. + * Currently this mostly redistributes ping sends from midnight until one hour after + * to avoid submission spikes around local midnight for daily pings. + * + * @param now Date The current time. + * @return Number The next time (ms from UNIX epoch) when we can send pings. + */ + _getNextPingSendTime(now) { + // 1. First we check if the pref is set to skip any delay and send immediately. + // 2. Next we check if the time is between 0am and 1am. If it's not, we send + // immediately. + // 3. If we confirmed the time is indeed between 0am and 1am in step 1, we disallow + // sending before (midnight + fuzzing delay), which is a random time between 0am-1am + // (decided at startup). + + let disableFuzzingDelay = Services.prefs.getBoolPref( + TelemetryUtils.Preferences.DisableFuzzingDelay, + false + ); + if (disableFuzzingDelay) { + return now.getTime(); + } + + const midnight = Utils.truncateToDays(now); + // Don't delay pings if we are not within the fuzzing interval. + if (now.getTime() - midnight.getTime() > MIDNIGHT_FUZZING_INTERVAL_MS) { + return now.getTime(); + } + + // Delay ping send if we are within the midnight fuzzing range. + // We spread those ping sends out between |midnight| and |midnight + midnightPingFuzzingDelay|. + return midnight.getTime() + Policy.midnightPingFuzzingDelay(); + }, + + getShutdownState() { + return { + shutdown: this._shutdown, + hasSendTask: !!this._sendTask, + sendsFailed: this._sendsFailed, + sendTaskState: this._sendTaskState, + backoffDelay: this._backoffDelay, + }; + }, +}; + +export var TelemetrySendImpl = { + _sendingEnabled: false, + // Tracks the shutdown state. + _shutdown: false, + _logger: null, + // This tracks all pending ping requests to the server. + _pendingPingRequests: new Map(), + // This tracks all the pending async ping activity. + _pendingPingActivity: new Set(), + // This is true when running in the test infrastructure. + _testMode: false, + // This holds pings that we currently try and haven't persisted yet. + _currentPings: new Map(), + // Used to skip spawning the pingsender if OS is shutting down. + _isOSShutdown: false, + // Has the network shut down, making it too late to send pings? + _tooLateToSend: false, + // Array of {url, path} awaiting flushPingSenderBatch(). + _pingSenderBatch: [], + + OBSERVER_TOPICS: [ + TOPIC_IDLE_DAILY, + TOPIC_QUIT_APPLICATION_GRANTED, + TOPIC_QUIT_APPLICATION_FORCED, + TOPIC_PROFILE_CHANGE_NET_TEARDOWN, + ], + + OBSERVED_PREFERENCES: [ + TelemetryUtils.Preferences.TelemetryEnabled, + TelemetryUtils.Preferences.FhrUploadEnabled, + ], + + // Whether sending pings has been overridden. + get _overrideOfficialCheck() { + return Services.prefs.getBoolPref( + TelemetryUtils.Preferences.OverrideOfficialCheck, + false + ); + }, + + get _log() { + if (!this._logger) { + this._logger = Log.repository.getLoggerWithMessagePrefix( + LOGGER_NAME, + LOGGER_PREFIX + ); + } + + return this._logger; + }, + + get pendingPingRequests() { + return this._pendingPingRequests; + }, + + get pendingPingCount() { + return ( + lazy.TelemetryStorage.getPendingPingList().length + + this._currentPings.size + ); + }, + + setTestModeEnabled(testing) { + this._testMode = testing; + }, + + earlyInit() { + this._annotateCrashReport(); + + // Install the observer to detect OS shutdown early enough, so + // that we catch this before the delayed setup happens. + Services.obs.addObserver(this, TOPIC_QUIT_APPLICATION_FORCED); + Services.obs.addObserver(this, TOPIC_QUIT_APPLICATION_GRANTED); + }, + + QueryInterface: ChromeUtils.generateQI(["nsISupportsWeakReference"]), + + async setup(testing) { + this._log.trace("setup"); + + this._testMode = testing; + + Services.obs.addObserver(this, TOPIC_IDLE_DAILY); + Services.obs.addObserver(this, TOPIC_PROFILE_CHANGE_NET_TEARDOWN); + + this._server = Services.prefs.getStringPref( + TelemetryUtils.Preferences.Server, + undefined + ); + this._sendingEnabled = true; + + // Annotate crash reports so that crash pings are sent correctly and listen + // to pref changes to adjust the annotations accordingly. + for (let pref of this.OBSERVED_PREFERENCES) { + Services.prefs.addObserver(pref, this, true); + } + this._annotateCrashReport(); + + // Check the pending pings on disk now. + try { + await this._checkPendingPings(); + } catch (ex) { + this._log.error("setup - _checkPendingPings rejected", ex); + } + + // Enforce the pending pings storage quota. It could take a while so don't + // block on it. + lazy.TelemetryStorage.runEnforcePendingPingsQuotaTask(); + + // Start sending pings, but don't block on this. + SendScheduler.triggerSendingPings(true); + }, + + /** + * Triggers the crash report annotations depending on the current + * configuration. This communicates to the crash reporter if it can send a + * crash ping or not. This method can be called safely before setup() has + * been called. + */ + _annotateCrashReport() { + try { + const cr = Cc["@mozilla.org/toolkit/crash-reporter;1"]; + if (cr) { + // This needs to use nsICrashReporter because test_TelemetrySend.js + // replaces the crash reporter service, which we can't access here + // as Services caches it. + // eslint-disable-next-line mozilla/use-services + const crs = cr.getService(Ci.nsICrashReporter); + + let clientId = ClientID.getCachedClientID(); + let server = + this._server || + Services.prefs.getStringPref( + TelemetryUtils.Preferences.Server, + undefined + ); + + if ( + !this.sendingEnabled() || + !lazy.TelemetryReportingPolicy.canUpload() + ) { + // If we cannot send pings then clear the crash annotations + crs.removeCrashReportAnnotation("TelemetryClientId"); + crs.removeCrashReportAnnotation("TelemetryServerURL"); + } else { + crs.annotateCrashReport("TelemetryClientId", clientId); + crs.annotateCrashReport("TelemetryServerURL", server); + } + } + } catch (e) { + // Ignore errors when crash reporting is disabled + } + }, + + /** + * Discard old pings from the pending pings and detect overdue ones. + * @return {Boolean} True if we have overdue pings, false otherwise. + */ + async _checkPendingPings() { + // Scan the pending pings - that gives us a list sorted by last modified, descending. + let infos = await lazy.TelemetryStorage.loadPendingPingList(); + this._log.info("_checkPendingPings - pending ping count: " + infos.length); + if (!infos.length) { + this._log.trace("_checkPendingPings - no pending pings"); + return; + } + + const now = Policy.now(); + + // Submit the age of the pending pings. + for (let pingInfo of infos) { + const ageInDays = Utils.millisecondsToDays( + Math.abs(now.getTime() - pingInfo.lastModificationDate) + ); + Services.telemetry + .getHistogramById("TELEMETRY_PENDING_PINGS_AGE") + .add(ageInDays); + } + }, + + async shutdown() { + this._shutdown = true; + + for (let pref of this.OBSERVED_PREFERENCES) { + // FIXME: When running tests this causes errors to be printed out if + // TelemetrySend.shutdown() is called twice in a row without calling + // TelemetrySend.setup() in-between. + Services.prefs.removeObserver(pref, this); + } + + for (let topic of this.OBSERVER_TOPICS) { + try { + Services.obs.removeObserver(this, topic); + } catch (ex) { + this._log.error( + "shutdown - failed to remove observer for " + topic, + ex + ); + } + } + + // We can't send anymore now. + this._sendingEnabled = false; + + // Cancel any outgoing requests. + await this._cancelOutgoingRequests(); + + // Stop any active send tasks. + await SendScheduler.shutdown(); + + // Wait for any outstanding async ping activity. + await this.promisePendingPingActivity(); + + // Save any outstanding pending pings to disk. + await this._persistCurrentPings(); + }, + + flushPingSenderBatch() { + if (this._pingSenderBatch.length === 0) { + return; + } + this._log.trace( + `flushPingSenderBatch - Sending ${this._pingSenderBatch.length} pings.` + ); + this.runPingSender(this._pingSenderBatch); + }, + + reset() { + this._log.trace("reset"); + + this._shutdown = false; + this._currentPings = new Map(); + this._tooLateToSend = false; + this._isOSShutdown = false; + this._sendingEnabled = true; + + const histograms = [ + "TELEMETRY_SUCCESS", + "TELEMETRY_SEND_SUCCESS", + "TELEMETRY_SEND_FAILURE", + "TELEMETRY_SEND_FAILURE_TYPE", + ]; + + histograms.forEach(h => Services.telemetry.getHistogramById(h).clear()); + + const keyedHistograms = ["TELEMETRY_SEND_FAILURE_TYPE_PER_PING"]; + + keyedHistograms.forEach(h => + Services.telemetry.getKeyedHistogramById(h).clear() + ); + + return SendScheduler.reset(); + }, + + /** + * Notify that we can start submitting data to the servers. + */ + notifyCanUpload() { + if (!this._sendingEnabled) { + this._log.trace( + "notifyCanUpload - notifying before sending is enabled. Ignoring." + ); + return Promise.resolve(); + } + // Let the scheduler trigger sending pings if possible, also inform the + // crash reporter that it can send crash pings if appropriate. + SendScheduler.triggerSendingPings(true); + this._annotateCrashReport(); + + return this.promisePendingPingActivity(); + }, + + observe(subject, topic, data) { + let setOSShutdown = () => { + this._log.trace("setOSShutdown - in OS shutdown"); + this._isOSShutdown = true; + }; + + switch (topic) { + case TOPIC_IDLE_DAILY: + SendScheduler.triggerSendingPings(true); + break; + case TOPIC_QUIT_APPLICATION_FORCED: + setOSShutdown(); + break; + case TOPIC_QUIT_APPLICATION_GRANTED: + if (data == "syncShutdown") { + setOSShutdown(); + } + break; + case PREF_CHANGED_TOPIC: + if (this.OBSERVED_PREFERENCES.includes(data)) { + this._annotateCrashReport(); + } + break; + case TOPIC_PROFILE_CHANGE_NET_TEARDOWN: + this._tooLateToSend = true; + break; + } + }, + + /** + * Spawn the PingSender process that sends a ping. This function does + * not return an error or throw, it only logs an error. + * + * Even if the function doesn't fail, it doesn't mean that the ping was + * successfully sent, as we have no control over the spawned process. If it, + * succeeds, the ping is eventually removed from the disk to prevent duplicated + * submissions. + * + * @param {String} pingId The id of the ping to send. + * @param {String} submissionURL The complete Telemetry-compliant URL for the ping. + */ + _sendWithPingSender(pingId, submissionURL) { + this._log.trace( + "_sendWithPingSender - sending " + pingId + " to " + submissionURL + ); + try { + const pingPath = PathUtils.join( + lazy.TelemetryStorage.pingDirectoryPath, + pingId + ); + if (this._tooLateToSend) { + // We're in shutdown. Batch pings destined for pingsender. + this._log.trace("_sendWithPingSender - too late to send. Batching."); + this._pingSenderBatch.push({ url: submissionURL, path: pingPath }); + return; + } + this.runPingSender([{ url: submissionURL, path: pingPath }]); + } catch (e) { + this._log.error("_sendWithPingSender - failed to submit ping", e); + } + }, + + submitPing(ping, options) { + this._log.trace( + "submitPing - ping id: " + + ping.id + + ", options: " + + JSON.stringify(options) + ); + + if (!this.sendingEnabled(ping)) { + this._log.trace("submitPing - Telemetry is not allowed to send pings."); + return Promise.resolve(); + } + + // Send the ping using the PingSender, if requested and the user was + // notified of our policy. We don't support the pingsender on Android, + // so ignore this option on that platform (see bug 1335917). + // Moreover, if the OS is shutting down, we don't want to spawn the + // pingsender as it could unnecessarily slow down OS shutdown. + // Additionally, it could be be killed before it can complete its tasks, + // for example after successfully sending the ping but before removing + // the copy from the disk, resulting in receiving duplicate pings when + // Firefox restarts. + if ( + options.usePingSender && + !this._isOSShutdown && + lazy.TelemetryReportingPolicy.canUpload() && + AppConstants.platform != "android" + ) { + const url = this._buildSubmissionURL(ping); + // Serialize the ping to the disk and then spawn the PingSender. + return savePing(ping).then(() => this._sendWithPingSender(ping.id, url)); + } + + if (!this.canSendNow) { + // Sending is disabled or throttled, add this to the persisted pending pings. + this._log.trace( + "submitPing - can't send ping now, persisting to disk - " + + "canSendNow: " + + this.canSendNow + ); + return savePing(ping); + } + + // Let the scheduler trigger sending pings if possible. + // As a safety mechanism, this resets any currently active throttling. + this._log.trace("submitPing - can send pings, trying to send now"); + this._currentPings.set(ping.id, ping); + SendScheduler.triggerSendingPings(true); + return Promise.resolve(); + }, + + /** + * Only used in tests. + */ + setServer(server) { + this._log.trace("setServer", server); + this._server = server; + }, + + /** + * Clear out unpersisted, yet to be sent, pings and cancel outgoing ping requests. + */ + async clearCurrentPings() { + if (this._shutdown) { + this._log.trace("clearCurrentPings - in shutdown, bailing out"); + return; + } + + // Temporarily disable the scheduler. It must not try to reschedule ping sending + // while we're deleting them. + await SendScheduler.shutdown(); + + // Now that the ping activity has settled, abort outstanding ping requests. + this._cancelOutgoingRequests(); + + // Also, purge current pings. + this._currentPings.clear(); + + // We might have been interrupted and shutdown could have been started. + // We need to bail out in that case to avoid triggering send activity etc. + // at unexpected times. + if (this._shutdown) { + this._log.trace( + "clearCurrentPings - in shutdown, not spinning SendScheduler up again" + ); + return; + } + + // Enable the scheduler again and spin the send task. + SendScheduler.start(); + SendScheduler.triggerSendingPings(true); + }, + + _cancelOutgoingRequests() { + // Abort any pending ping XHRs. + for (let [id, request] of this._pendingPingRequests) { + this._log.trace( + "_cancelOutgoingRequests - aborting ping request for id " + id + ); + try { + request.abort(); + } catch (e) { + this._log.error( + "_cancelOutgoingRequests - failed to abort request for id " + id, + e + ); + } + } + this._pendingPingRequests.clear(); + }, + + sendPings(currentPings, persistedPingIds) { + let pingSends = []; + + // Prioritize health pings to enable low-latency monitoring. + currentPings = [ + ...currentPings.filter(ping => ping.type === "health"), + ...currentPings.filter(ping => ping.type !== "health"), + ]; + + for (let current of currentPings) { + let ping = current; + let p = (async () => { + try { + await this._doPing(ping, ping.id, false); + } catch (ex) { + this._log.info( + "sendPings - ping " + ping.id + " not sent, saving to disk", + ex + ); + await savePing(ping); + } finally { + this._currentPings.delete(ping.id); + } + })(); + + this._trackPendingPingTask(p); + pingSends.push(p); + } + + if (persistedPingIds.length) { + pingSends.push( + this._sendPersistedPings(persistedPingIds).catch(ex => { + this._log.info("sendPings - persisted pings not sent", ex); + }) + ); + } + + return Promise.all(pingSends); + }, + + /** + * Send the persisted pings to the server. + * + * @param {Array<string>} List of ping ids that should be sent. + * + * @return Promise A promise that is resolved when all pings finished sending or failed. + */ + async _sendPersistedPings(pingIds) { + this._log.trace("sendPersistedPings"); + + if (this.pendingPingCount < 1) { + this._log.trace("_sendPersistedPings - no pings to send"); + return; + } + + if (pingIds.length < 1) { + this._log.trace("sendPersistedPings - no pings to send"); + return; + } + + // We can send now. + // If there are any send failures, _doPing() sets up handlers that e.g. trigger backoff timer behavior. + this._log.trace( + "sendPersistedPings - sending " + pingIds.length + " pings" + ); + let pingSendPromises = []; + for (let pingId of pingIds) { + const id = pingId; + pingSendPromises.push( + lazy.TelemetryStorage.loadPendingPing(id) + .then(data => this._doPing(data, id, true)) + .catch(e => + this._log.error("sendPersistedPings - failed to send ping " + id, e) + ) + ); + } + + let promise = Promise.all(pingSendPromises); + this._trackPendingPingTask(promise); + await promise; + }, + + _onPingRequestFinished(success, startTime, id, isPersisted) { + this._log.trace( + "_onPingRequestFinished - success: " + + success + + ", persisted: " + + isPersisted + ); + + let sendId = success ? "TELEMETRY_SEND_SUCCESS" : "TELEMETRY_SEND_FAILURE"; + let hsend = Services.telemetry.getHistogramById(sendId); + let hsuccess = Services.telemetry.getHistogramById("TELEMETRY_SUCCESS"); + + hsend.add(Utils.monotonicNow() - startTime); + hsuccess.add(success); + + if (!success) { + // Let the scheduler know about send failures for triggering backoff timeouts. + SendScheduler.notifySendsFailed(); + } + + if (success && isPersisted) { + return lazy.TelemetryStorage.removePendingPing(id); + } + return Promise.resolve(); + }, + + _buildSubmissionURL(ping) { + const version = isV4PingFormat(ping) + ? AppConstants.TELEMETRY_PING_FORMAT_VERSION + : 1; + return this._server + this._getSubmissionPath(ping) + "?v=" + version; + }, + + _getSubmissionPath(ping) { + // The new ping format contains an "application" section, the old one doesn't. + let pathComponents; + if (isV4PingFormat(ping)) { + // We insert the Ping id in the URL to simplify server handling of duplicated + // pings. + let app = ping.application; + pathComponents = [ + ping.id, + ping.type, + app.name, + app.version, + app.channel, + app.buildId, + ]; + } else { + // This is a ping in the old format. + if (!("slug" in ping)) { + // That's odd, we don't have a slug. Generate one so that TelemetryStorage.sys.mjs works. + ping.slug = Utils.generateUUID(); + } + + // Do we have enough info to build a submission URL? + let payload = "payload" in ping ? ping.payload : null; + if (payload && "info" in payload) { + let info = ping.payload.info; + pathComponents = [ + ping.slug, + info.reason, + info.appName, + info.appVersion, + info.appUpdateChannel, + info.appBuildID, + ]; + } else { + // Only use the UUID as the slug. + pathComponents = [ping.slug]; + } + } + + let slug = pathComponents.join("/"); + return "/submit/telemetry/" + slug; + }, + + _doPingRequest(ping, id, url, options, errorHandler, onloadHandler) { + // Don't send cookies with these requests. + let request = new ServiceRequest({ mozAnon: true }); + request.mozBackgroundRequest = true; + request.timeout = Policy.pingSubmissionTimeout(); + + request.open("POST", url, options); + request.overrideMimeType("text/plain"); + request.setRequestHeader("Content-Type", "application/json; charset=UTF-8"); + request.setRequestHeader("Date", Policy.now().toUTCString()); + request.setRequestHeader("Content-Encoding", "gzip"); + request.onerror = errorHandler; + request.ontimeout = errorHandler; + request.onabort = errorHandler; + request.onload = onloadHandler; + this._pendingPingRequests.set(id, request); + + let startTime = Utils.monotonicNow(); + + // If that's a legacy ping format, just send its payload. + let networkPayload = isV4PingFormat(ping) ? ping : ping.payload; + + const utf8Payload = new TextEncoder().encode( + JSON.stringify(networkPayload) + ); + + Services.telemetry + .getHistogramById("TELEMETRY_STRINGIFY") + .add(Utils.monotonicNow() - startTime); + + let payloadStream = Cc[ + "@mozilla.org/io/string-input-stream;1" + ].createInstance(Ci.nsIStringInputStream); + startTime = Utils.monotonicNow(); + payloadStream.data = Policy.gzipCompressString(arrayToString(utf8Payload)); + + // Check the size and drop pings which are too big. + const compressedPingSizeBytes = payloadStream.data.length; + if (compressedPingSizeBytes > lazy.TelemetryStorage.MAXIMUM_PING_SIZE) { + this._log.error( + "_doPing - submitted ping exceeds the size limit, size: " + + compressedPingSizeBytes + ); + Services.telemetry + .getHistogramById("TELEMETRY_PING_SIZE_EXCEEDED_SEND") + .add(); + Services.telemetry + .getHistogramById("TELEMETRY_DISCARDED_SEND_PINGS_SIZE_MB") + .add(Math.floor(compressedPingSizeBytes / 1024 / 1024)); + // We don't need to call |request.abort()| as it was not sent yet. + this._pendingPingRequests.delete(id); + + lazy.TelemetryHealthPing.recordDiscardedPing(ping.type); + return { promise: lazy.TelemetryStorage.removePendingPing(id) }; + } + + Services.telemetry + .getHistogramById("TELEMETRY_COMPRESS") + .add(Utils.monotonicNow() - startTime); + request.sendInputStream(payloadStream); + + return { payloadStream }; + }, + + _doPing(ping, id, isPersisted) { + if (!this.sendingEnabled(ping)) { + // We can't send the pings to the server, so don't try to. + this._log.trace("_doPing - Can't send ping " + ping.id); + return Promise.resolve(); + } + + if (this._tooLateToSend) { + // Too late to send now. Reject so we pend the ping to send it next time. + this._log.trace("_doPing - Too late to send ping " + ping.id); + Services.telemetry + .getHistogramById("TELEMETRY_SEND_FAILURE_TYPE") + .add("eTooLate"); + Services.telemetry + .getKeyedHistogramById("TELEMETRY_SEND_FAILURE_TYPE_PER_PING") + .add(ping.type, "eTooLate"); + return Promise.reject(); + } + + this._log.trace( + "_doPing - server: " + + this._server + + ", persisted: " + + isPersisted + + ", id: " + + id + ); + + const url = this._buildSubmissionURL(ping); + + const monotonicStartTime = Utils.monotonicNow(); + let deferred = Promise.withResolvers(); + + let onRequestFinished = (success, event) => { + let onCompletion = () => { + if (success) { + deferred.resolve(); + } else { + deferred.reject(event); + } + }; + + this._pendingPingRequests.delete(id); + this._onPingRequestFinished( + success, + monotonicStartTime, + id, + isPersisted + ).then( + () => onCompletion(), + error => { + this._log.error( + "_doPing - request success: " + success + ", error: " + error + ); + onCompletion(); + } + ); + }; + + let retryRequest = request => { + if ( + this._shutdown || + ServiceRequest.isOffline || + Services.startup.shuttingDown || + !request.bypassProxyEnabled || + this._tooLateToSend || + request.bypassProxy || + !request.isProxied + ) { + return false; + } + ServiceRequest.logProxySource(request.channel, "telemetry.send"); + // If the request failed, and it's using a proxy, automatically + // attempt without proxy. + let { payloadStream } = this._doPingRequest( + ping, + id, + url, + { bypassProxy: true }, + errorHandler, + onloadHandler + ); + this.payloadStream = payloadStream; + return true; + }; + + let errorHandler = event => { + let request = event.target; + if (retryRequest(request)) { + return; + } + + let failure = event.type; + if (failure === "error") { + failure = XHR_ERROR_TYPE[request.errorCode]; + } + + lazy.TelemetryHealthPing.recordSendFailure(failure); + + Services.telemetry + .getHistogramById("TELEMETRY_SEND_FAILURE_TYPE") + .add(failure); + Services.telemetry + .getKeyedHistogramById("TELEMETRY_SEND_FAILURE_TYPE_PER_PING") + .add(ping.type, failure); + + this._log.error( + "_doPing - error making request to " + url + ": " + failure + ); + onRequestFinished(false, event); + }; + + let onloadHandler = event => { + let request = event.target; + let status = request.status; + let statusClass = status - (status % 100); + let success = false; + + if (statusClass === 200) { + // We can treat all 2XX as success. + this._log.info("_doPing - successfully loaded, status: " + status); + success = true; + } else if (statusClass === 400) { + // 4XX means that something with the request was broken. + this._log.error( + "_doPing - error submitting to " + + url + + ", status: " + + status + + " - ping request broken?" + ); + Services.telemetry + .getHistogramById("TELEMETRY_PING_EVICTED_FOR_SERVER_ERRORS") + .add(); + // TODO: we should handle this better, but for now we should avoid resubmitting + // broken requests by pretending success. + success = true; + } else if (statusClass === 500) { + // 5XX means there was a server-side error and we should try again later. + this._log.error( + "_doPing - error submitting to " + + url + + ", status: " + + status + + " - server error, should retry later" + ); + } else { + // We received an unexpected status code. + this._log.error( + "_doPing - error submitting to " + + url + + ", status: " + + status + + ", type: " + + event.type + ); + } + if (!success && retryRequest(request)) { + return; + } + + onRequestFinished(success, event); + }; + + let { payloadStream, promise } = this._doPingRequest( + ping, + id, + url, + {}, + errorHandler, + onloadHandler + ); + if (promise) { + return promise; + } + this.payloadStream = payloadStream; + + return deferred.promise; + }, + + /** + * Check if sending is temporarily disabled. + * @return {Boolean} True if we can send pings to the server right now, false if + * sending is temporarily disabled. + */ + get canSendNow() { + // If the reporting policy was not accepted yet, don't send pings. + if (!lazy.TelemetryReportingPolicy.canUpload()) { + return false; + } + + return this._sendingEnabled; + }, + + /** + * Check if sending is disabled. If Telemetry is not allowed to upload, + * pings are not sent to the server. + * If trying to send a "deletion-request" ping, don't block it. + * If unified telemetry is off, don't send pings if Telemetry is disabled. + * + * @param {Object} [ping=null] A ping to be checked. + * @return {Boolean} True if pings can be send to the servers, false otherwise. + */ + sendingEnabled(ping = null) { + // We only send pings from official builds, but allow overriding this for tests. + if ( + !Services.telemetry.isOfficialTelemetry && + !this._testMode && + !this._overrideOfficialCheck + ) { + return false; + } + + // With unified Telemetry, the FHR upload setting controls whether we can send pings. + // The Telemetry pref enables sending extended data sets instead. + if (IS_UNIFIED_TELEMETRY) { + // "deletion-request" pings are sent once even if the upload is disabled. + if (ping && isDeletionRequestPing(ping)) { + return true; + } + return Services.prefs.getBoolPref( + TelemetryUtils.Preferences.FhrUploadEnabled, + false + ); + } + + // Without unified Telemetry, the Telemetry enabled pref controls ping sending. + return Utils.isTelemetryEnabled; + }, + + /** + * Track any pending ping send and save tasks through the promise passed here. + * This is needed to block shutdown on any outstanding ping activity. + */ + _trackPendingPingTask(promise) { + let clear = () => this._pendingPingActivity.delete(promise); + promise.then(clear, clear); + this._pendingPingActivity.add(promise); + }, + + /** + * Return a promise that allows to wait on pending pings. + * @return {Object<Promise>} A promise resolved when all the pending pings promises + * are resolved. + */ + promisePendingPingActivity() { + this._log.trace("promisePendingPingActivity - Waiting for ping task"); + let p = Array.from(this._pendingPingActivity, p => + p.catch(ex => { + this._log.error( + "promisePendingPingActivity - ping activity had an error", + ex + ); + }) + ); + p.push(SendScheduler.waitOnSendTask()); + return Promise.all(p); + }, + + async _persistCurrentPings() { + for (let [id, ping] of this._currentPings) { + try { + await savePing(ping); + this._log.trace("_persistCurrentPings - saved ping " + id); + } catch (ex) { + this._log.error("_persistCurrentPings - failed to save ping " + id, ex); + } finally { + this._currentPings.delete(id); + } + } + }, + + /** + * Returns the current pending, not yet persisted, pings, newest first. + */ + getUnpersistedPings() { + let current = [...this._currentPings.values()]; + current.reverse(); + return current; + }, + + getShutdownState() { + return { + sendingEnabled: this._sendingEnabled, + pendingPingRequestCount: this._pendingPingRequests.size, + pendingPingActivityCount: this._pendingPingActivity.size, + unpersistedPingCount: this._currentPings.size, + persistedPingCount: lazy.TelemetryStorage.getPendingPingList().length, + schedulerState: SendScheduler.getShutdownState(), + }; + }, + + runPingSender(pings, observer) { + if (AppConstants.platform === "android") { + throw Components.Exception("", Cr.NS_ERROR_NOT_IMPLEMENTED); + } + + let suppressPingsender = Services.prefs.getBoolPref( + "toolkit.telemetry.testing.suppressPingsender", + false + ); + if (suppressPingsender) { + this._log.trace("Silently skipping pingsender call in automation"); + return; + } + + // By default, invoke `pingsender[.exe] URL path ...`. + let exeName = + AppConstants.platform === "win" ? "pingsender.exe" : "pingsender"; + let params = []; + + if (lazy.NimbusFeatures.pingsender.getVariable("backgroundTaskEnabled")) { + // If using pingsender background task, invoke `firefox[.exe] --backgroundtask pingsender URL path ...`. + exeName = + AppConstants.MOZ_APP_NAME + + (AppConstants.platform === "win" ? ".exe" : ""); + params = ["--backgroundtask", "pingsender"]; + } + + this._log.info( + `Invoking '${exeName}${params.length ? " " + params.join(" ") : ""} ...'` + ); + + let exe = Services.dirsvc.get("GreBinD", Ci.nsIFile); + exe.append(exeName); + + params.push(...pings.flatMap(ping => [ping.url, ping.path])); + let process = Cc["@mozilla.org/process/util;1"].createInstance( + Ci.nsIProcess + ); + process.init(exe); + process.startHidden = true; + process.noShell = true; + process.runAsync(params, params.length, observer); + }, +}; |