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/* -*- js-indent-level: 2; 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/. */
"use strict";
ChromeUtils.import("resource://gre/modules/Log.jsm", this);
ChromeUtils.import("resource://gre/modules/Services.jsm", this);
ChromeUtils.import("resource://gre/modules/TelemetryUtils.jsm", this);
ChromeUtils.defineModuleGetter(
this,
"TelemetryController",
"resource://gre/modules/TelemetryController.jsm"
);
const LOGGER_NAME = "Toolkit.Telemetry";
const PING_TYPE = "update";
const UPDATE_DOWNLOADED_TOPIC = "update-downloaded";
const UPDATE_STAGED_TOPIC = "update-staged";
var EXPORTED_SYMBOLS = ["UpdatePing"];
/**
* This module is responsible for listening to all the relevant update
* signals, gathering the needed information and assembling the "update"
* ping.
*/
var UpdatePing = {
_enabled: false,
earlyInit() {
this._log = Log.repository.getLoggerWithMessagePrefix(
LOGGER_NAME,
"UpdatePing::"
);
this._enabled = Services.prefs.getBoolPref(
TelemetryUtils.Preferences.UpdatePing,
false
);
this._log.trace("init - enabled: " + this._enabled);
if (!this._enabled) {
return;
}
Services.obs.addObserver(this, UPDATE_DOWNLOADED_TOPIC);
Services.obs.addObserver(this, UPDATE_STAGED_TOPIC);
},
/**
* Get the information about the update we're going to apply/was just applied
* from the update manager.
*
* @return {nsIUpdate} The information about the update, if available, or null.
*/
_getActiveUpdate() {
let updateManager = Cc["@mozilla.org/updates/update-manager;1"].getService(
Ci.nsIUpdateManager
);
if (!updateManager || !updateManager.readyUpdate) {
return null;
}
return updateManager.readyUpdate;
},
/**
* Generate an "update" ping with reason "success" and dispatch it
* to the Telemetry system.
*
* @param {String} aPreviousVersion The browser version we updated from.
* @param {String} aPreviousBuildId The browser build id we updated from.
*/
handleUpdateSuccess(aPreviousVersion, aPreviousBuildId) {
if (!this._enabled) {
return;
}
this._log.trace("handleUpdateSuccess");
// An update could potentially change the update channel. Moreover,
// updates can only be applied if the update's channel matches with the build channel.
// There's no way to pass this information from the caller nor the environment as,
// in that case, the environment would report the "new" channel. However, the
// update manager should still have information about the active update: given the
// previous assumptions, we can simply get the channel from the update and assume
// it matches with the state previous to the update.
let update = this._getActiveUpdate();
const payload = {
reason: "success",
previousChannel: update ? update.channel : null,
previousVersion: aPreviousVersion,
previousBuildId: aPreviousBuildId,
};
const options = {
addClientId: true,
addEnvironment: true,
usePingSender: false,
};
TelemetryController.submitExternalPing(
PING_TYPE,
payload,
options
).catch(e =>
this._log.error("handleUpdateSuccess - failed to submit update ping", e)
);
},
/**
* Generate an "update" ping with reason "ready" and dispatch it
* to the Telemetry system.
*
* @param {String} aUpdateState The state of the downloaded patch. See
* nsIUpdateService.idl for a list of possible values.
*/
_handleUpdateReady(aUpdateState) {
const ALLOWED_STATES = [
"applied",
"applied-service",
"pending",
"pending-service",
"pending-elevate",
];
if (!ALLOWED_STATES.includes(aUpdateState)) {
this._log.trace("Unexpected update state: " + aUpdateState);
return;
}
// Get the information about the update we're going to apply from the
// update manager.
let update = this._getActiveUpdate();
if (!update) {
this._log.trace(
"Cannot get the update manager or no update is currently active."
);
return;
}
const payload = {
reason: "ready",
targetChannel: update.channel,
targetVersion: update.appVersion,
targetBuildId: update.buildID,
targetDisplayVersion: update.displayVersion,
};
const options = {
addClientId: true,
addEnvironment: true,
usePingSender: true,
};
TelemetryController.submitExternalPing(
PING_TYPE,
payload,
options
).catch(e =>
this._log.error("_handleUpdateReady - failed to submit update ping", e)
);
},
/**
* The notifications handler.
*/
observe(aSubject, aTopic, aData) {
this._log.trace("observe - aTopic: " + aTopic);
if (aTopic == UPDATE_DOWNLOADED_TOPIC || aTopic == UPDATE_STAGED_TOPIC) {
this._handleUpdateReady(aData);
}
},
shutdown() {
if (!this._enabled) {
return;
}
Services.obs.removeObserver(this, UPDATE_DOWNLOADED_TOPIC);
Services.obs.removeObserver(this, UPDATE_STAGED_TOPIC);
},
};
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