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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
import { LogManager } from "resource://gre/modules/LogManager.sys.mjs";
// See Bug 1889052
// eslint-disable-next-line mozilla/use-console-createInstance
import { Log } from "resource://gre/modules/Log.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
AsyncShutdown: "resource://gre/modules/AsyncShutdown.sys.mjs",
cancelIdleCallback: "resource://gre/modules/Timer.sys.mjs",
requestIdleCallback: "resource://gre/modules/Timer.sys.mjs",
});
const loggerNames = ["SessionStore"];
export const sessionStoreLogger = Log.repository.getLogger("SessionStore");
sessionStoreLogger.manageLevelFromPref("browser.sessionstore.loglevel");
class SessionLogManager extends LogManager {
#idleCallbackId = null;
#observers = new Set();
QueryInterface = ChromeUtils.generateQI([Ci.nsIObserver]);
constructor(options = {}) {
super(options);
Services.obs.addObserver(this, "sessionstore-windows-restored");
this.#observers.add("sessionstore-windows-restored");
lazy.AsyncShutdown.profileBeforeChange.addBlocker(
"SessionLogManager: finalize and flush any logs to disk",
() => {
return this.stop();
}
);
}
async stop() {
if (this.#observers.has("sessionstore-windows-restored")) {
Services.obs.removeObserver(this, "sessionstore-windows-restored");
this.#observers.delete("sessionstore-windows-restored");
}
await this.requestLogFlush(true);
this.finalize();
}
observe(subject, topic, _) {
switch (topic) {
case "sessionstore-windows-restored":
// this represents the moment session restore is nominally complete
// and is a good time to ensure any log messages are flushed to disk
Services.obs.removeObserver(this, "sessionstore-windows-restored");
this.#observers.delete("sessionstore-windows-restored");
this.requestLogFlush();
break;
}
}
async requestLogFlush(immediate = false) {
if (this.#idleCallbackId && !immediate) {
return;
}
if (this.#idleCallbackId) {
lazy.cancelIdleCallback(this.#idleCallbackId);
this.#idleCallbackId = null;
}
if (!immediate) {
await new Promise(resolve => {
this.#idleCallbackId = lazy.requestIdleCallback(resolve);
});
this.#idleCallbackId = null;
}
await this.resetFileLog();
}
}
export const logManager = new SessionLogManager({
prefRoot: "browser.sessionstore.",
logNames: loggerNames,
logFilePrefix: "sessionrestore",
logFileSubDirectoryEntries: ["sessionstore-logs"],
testTopicPrefix: "sessionrestore:log-manager:",
});
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