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/* 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
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
PreferenceExperiments:
RemoteSettingsExperimentLoader:
});
const UI_AVAILABLE_NOTIFICATION = "sessionstore-windows-restored";
const BOOTSTRAP_LOGGER_NAME = "app.normandy.bootstrap";
const SHIELD_INIT_NOTIFICATION = "shield-init-complete";
const STARTUP_EXPERIMENT_PREFS_BRANCH = "app.normandy.startupExperimentPrefs.";
const STARTUP_ROLLOUT_PREFS_BRANCH = "app.normandy.startupRolloutPrefs.";
const PREF_LOGGING_LEVEL = "app.normandy.logging.level";
// Logging
const log = Log.repository.getLogger(BOOTSTRAP_LOGGER_NAME);
log.addAppender(new Log.ConsoleAppender(new Log.BasicFormatter()));
log.level = Services.prefs.getIntPref(PREF_LOGGING_LEVEL, Log.Level.Warn);
export var Normandy = {
studyPrefsChanged: {},
rolloutPrefsChanged: {},
defaultPrefsHaveBeenApplied: Promise.withResolvers(),
uiAvailableNotificationObserved: Promise.withResolvers(),
/** Initialization that needs to happen before the first paint on startup. */
async init({ runAsync = true } = {}) {
// It is important to register the listener for the UI before the first
// await, to avoid missing it.
Services.obs.addObserver(this, UI_AVAILABLE_NOTIFICATION);
// It is important this happens before the first `await`. Note that this
// also happens before migrations are applied.
this.rolloutPrefsChanged = this.applyStartupPrefs(
STARTUP_ROLLOUT_PREFS_BRANCH
);
this.studyPrefsChanged = this.applyStartupPrefs(
STARTUP_EXPERIMENT_PREFS_BRANCH
);
this.defaultPrefsHaveBeenApplied.resolve();
await lazy.NormandyMigrations.applyAll();
// Wait for the UI to be ready, or time out after 5 minutes.
if (runAsync) {
await Promise.race([
this.uiAvailableNotificationObserved.promise,
new Promise(resolve => setTimeout(resolve, 5 * 60 * 1000)),
]);
}
// Remove observer for UI notifications. It will error if the notification
// was already removed, which is fine.
try {
Services.obs.removeObserver(this, UI_AVAILABLE_NOTIFICATION);
} catch (e) {}
await this.finishInit();
},
async observe(subject, topic) {
if (topic === UI_AVAILABLE_NOTIFICATION) {
Services.obs.removeObserver(this, UI_AVAILABLE_NOTIFICATION);
this.uiAvailableNotificationObserved.resolve();
}
},
async finishInit() {
try {
lazy.TelemetryEvents.init();
} catch (err) {
log.error("Failed to initialize telemetry events:", err);
}
await lazy.PreferenceRollouts.recordOriginalValues(
this.rolloutPrefsChanged
);
await lazy.PreferenceExperiments.recordOriginalValues(
this.studyPrefsChanged
);
// Setup logging and listen for changes to logging prefs
lazy.LogManager.configure(
Services.prefs.getIntPref(PREF_LOGGING_LEVEL, Log.Level.Warn)
);
Services.prefs.addObserver(PREF_LOGGING_LEVEL, lazy.LogManager.configure);
lazy.CleanupManager.addCleanupHandler(() =>
Services.prefs.removeObserver(
PREF_LOGGING_LEVEL,
lazy.LogManager.configure
)
);
try {
await lazy.ExperimentManager.onStartup();
} catch (err) {
log.error("Failed to initialize ExperimentManager:", err);
}
try {
await lazy.RemoteSettingsExperimentLoader.init();
} catch (err) {
log.error("Failed to initialize RemoteSettingsExperimentLoader:", err);
}
try {
await lazy.AddonStudies.init();
} catch (err) {
log.error("Failed to initialize addon studies:", err);
}
try {
await lazy.PreferenceRollouts.init();
} catch (err) {
log.error("Failed to initialize preference rollouts:", err);
}
try {
await lazy.AddonRollouts.init();
} catch (err) {
log.error("Failed to initialize addon rollouts:", err);
}
try {
await lazy.PreferenceExperiments.init();
} catch (err) {
log.error("Failed to initialize preference experiments:", err);
}
try {
lazy.ShieldPreferences.init();
} catch (err) {
log.error("Failed to initialize preferences UI:", err);
}
await lazy.RecipeRunner.init();
Services.obs.notifyObservers(null, SHIELD_INIT_NOTIFICATION);
},
async uninit() {
await lazy.CleanupManager.cleanup();
// Note that Service.pref.removeObserver and Service.obs.removeObserver have
// oppositely ordered parameters.
Services.prefs.removeObserver(
PREF_LOGGING_LEVEL,
lazy.LogManager.configure
);
try {
Services.obs.removeObserver(this, UI_AVAILABLE_NOTIFICATION);
} catch (e) {
// topic must have already been removed or never added
}
},
/**
* Copy a preference subtree from one branch to another, being careful about
* types, and return the values the target branch originally had. Prefs will
* be read from the user branch and applied to the default branch.
*
* @param sourcePrefix
* The pref prefix to read prefs from.
* @returns
* The original values that each pref had on the default branch.
*/
applyStartupPrefs(sourcePrefix) {
// Note that this is called before Normandy's migrations are applied. This
// currently has no effect, but future changes should be careful to be
// backwards compatible.
const originalValues = {};
const sourceBranch = Services.prefs.getBranch(sourcePrefix);
const targetBranch = Services.prefs.getDefaultBranch("");
for (const prefName of sourceBranch.getChildList("")) {
const sourcePrefType = sourceBranch.getPrefType(prefName);
const targetPrefType = targetBranch.getPrefType(prefName);
if (
targetPrefType !== Services.prefs.PREF_INVALID &&
targetPrefType !== sourcePrefType
) {
console.error(
new Error(
`Error setting startup pref ${prefName}; pref type does not match.`
)
);
continue;
}
// record the value of the default branch before setting it
try {
switch (targetPrefType) {
case Services.prefs.PREF_STRING: {
originalValues[prefName] = targetBranch.getCharPref(prefName);
break;
}
case Services.prefs.PREF_INT: {
originalValues[prefName] = targetBranch.getIntPref(prefName);
break;
}
case Services.prefs.PREF_BOOL: {
originalValues[prefName] = targetBranch.getBoolPref(prefName);
break;
}
case Services.prefs.PREF_INVALID: {
originalValues[prefName] = null;
break;
}
default: {
// This should never happen
log.error(
`Error getting startup pref ${prefName}; unknown value type ${sourcePrefType}.`
);
}
}
} catch (e) {
if (e.result === Cr.NS_ERROR_UNEXPECTED) {
// There is a value for the pref on the user branch but not on the default branch. This is ok.
originalValues[prefName] = null;
} else {
// Unexpected error, report it and move on
console.error(e);
continue;
}
}
// now set the new default value
switch (sourcePrefType) {
case Services.prefs.PREF_STRING: {
targetBranch.setCharPref(
prefName,
sourceBranch.getCharPref(prefName)
);
break;
}
case Services.prefs.PREF_INT: {
targetBranch.setIntPref(prefName, sourceBranch.getIntPref(prefName));
break;
}
case Services.prefs.PREF_BOOL: {
targetBranch.setBoolPref(
prefName,
sourceBranch.getBoolPref(prefName)
);
break;
}
default: {
// This should never happen.
console.error(
new Error(
`Error getting startup pref ${prefName}; unexpected value type ${sourcePrefType}.`
)
);
}
}
}
return originalValues;
},
};