2018-04-13 03:34:16 +03:00
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/*
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Copyright 2017 OpenMarket Ltd
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Copyright 2018 New Vector Ltd
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2019-10-08 16:29:03 +03:00
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Copyright 2019 The Matrix.org Foundation C.I.C.
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2018-04-13 03:34:16 +03:00
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import Promise from 'bluebird';
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// This module contains all the code needed to log the console, persist it to
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// disk and submit bug reports. Rationale is as follows:
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// - Monkey-patching the console is preferable to having a log library because
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// we can catch logs by other libraries more easily, without having to all
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// depend on the same log framework / pass the logger around.
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// - We use IndexedDB to persists logs because it has generous disk space
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// limits compared to local storage. IndexedDB does not work in incognito
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// mode, in which case this module will not be able to write logs to disk.
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// However, the logs will still be stored in-memory, so can still be
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// submitted in a bug report should the user wish to: we can also store more
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// logs in-memory than in local storage, which does work in incognito mode.
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// We also need to handle the case where there are 2+ tabs. Each JS runtime
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// generates a random string which serves as the "ID" for that tab/session.
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// These IDs are stored along with the log lines.
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// - Bug reports are sent as a POST over HTTPS: it purposefully does not use
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// Matrix as bug reports may be made when Matrix is not responsive (which may
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// be the cause of the bug). We send the most recent N MB of UTF-8 log data,
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// starting with the most recent, which we know because the "ID"s are
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// actually timestamps. We then purge the remaining logs. We also do this
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// purge on startup to prevent logs from accumulating.
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// the frequency with which we flush to indexeddb
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const FLUSH_RATE_MS = 30 * 1000;
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// the length of log data we keep in indexeddb (and include in the reports)
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const MAX_LOG_SIZE = 1024 * 1024 * 1; // 1 MB
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// A class which monkey-patches the global console and stores log lines.
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class ConsoleLogger {
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constructor() {
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this.logs = "";
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}
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monkeyPatch(consoleObj) {
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// Monkey-patch console logging
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const consoleFunctionsToLevels = {
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log: "I",
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info: "I",
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warn: "W",
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error: "E",
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};
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Object.keys(consoleFunctionsToLevels).forEach((fnName) => {
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const level = consoleFunctionsToLevels[fnName];
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2018-10-12 05:58:20 +03:00
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const originalFn = consoleObj[fnName].bind(consoleObj);
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consoleObj[fnName] = (...args) => {
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this.log(level, ...args);
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originalFn(...args);
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2018-10-12 05:58:20 +03:00
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};
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2018-04-13 03:34:16 +03:00
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});
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}
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log(level, ...args) {
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// We don't know what locale the user may be running so use ISO strings
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const ts = new Date().toISOString();
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2019-03-01 19:58:54 +03:00
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// Convert objects and errors to helpful things
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args = args.map((arg) => {
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if (arg instanceof Error) {
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2019-08-23 10:12:46 +03:00
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return arg.message + (arg.stack ? `\n${arg.stack}` : '');
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2019-10-08 16:29:03 +03:00
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} else if (typeof (arg) === 'object') {
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try {
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return JSON.stringify(arg);
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} catch (e) {
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// In development, it can be useful to log complex cyclic
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// objects to the console for inspection. This is fine for
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// the console, but default `stringify` can't handle that.
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// We workaround this by using a special replacer function
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// to only log values of the root object and avoid cycles.
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return JSON.stringify(arg, (key, value) => {
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if (key && typeof value === "object") {
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return "<object>";
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}
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return value;
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});
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}
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2019-03-01 19:58:54 +03:00
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} else {
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return arg;
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2019-03-01 19:58:54 +03:00
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}
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});
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2018-04-13 03:34:16 +03:00
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// Some browsers support string formatting which we're not doing here
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// so the lines are a little more ugly but easy to implement / quick to
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// run.
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// Example line:
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// 2017-01-18T11:23:53.214Z W Failed to set badge count
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let line = `${ts} ${level} ${args.join(' ')}\n`;
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// Do some cleanup
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line = line.replace(/token=[a-zA-Z0-9-]+/gm, 'token=xxxxx');
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2018-04-13 03:34:16 +03:00
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// Using + really is the quickest way in JS
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// http://jsperf.com/concat-vs-plus-vs-join
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this.logs += line;
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}
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/**
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* Retrieve log lines to flush to disk.
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* @param {boolean} keepLogs True to not delete logs after flushing.
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* @return {string} \n delimited log lines to flush.
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*/
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flush(keepLogs) {
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// The ConsoleLogger doesn't care how these end up on disk, it just
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// flushes them to the caller.
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if (keepLogs) {
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return this.logs;
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}
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const logsToFlush = this.logs;
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this.logs = "";
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return logsToFlush;
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}
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}
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// A class which stores log lines in an IndexedDB instance.
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class IndexedDBLogStore {
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constructor(indexedDB, logger) {
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this.indexedDB = indexedDB;
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this.logger = logger;
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this.id = "instance-" + Math.random() + Date.now();
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this.index = 0;
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this.db = null;
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this.flushPromise = null;
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// set if flush() is called whilst one is ongoing
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this.flushAgainPromise = null;
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}
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/**
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* @return {Promise} Resolves when the store is ready.
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*/
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connect() {
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const req = this.indexedDB.open("logs");
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return new Promise((resolve, reject) => {
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req.onsuccess = (event) => {
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this.db = event.target.result;
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// Periodically flush logs to local storage / indexeddb
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setInterval(this.flush.bind(this), FLUSH_RATE_MS);
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resolve();
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};
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req.onerror = (event) => {
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const err = (
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2018-10-08 16:14:03 +03:00
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"Failed to open log database: " + event.target.error.name
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2018-04-13 03:34:16 +03:00
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);
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console.error(err);
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reject(new Error(err));
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};
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// First time: Setup the object store
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req.onupgradeneeded = (event) => {
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const db = event.target.result;
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const logObjStore = db.createObjectStore("logs", {
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keyPath: ["id", "index"],
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2018-04-13 03:34:16 +03:00
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});
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// Keys in the database look like: [ "instance-148938490", 0 ]
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// Later on we need to query everything based on an instance id.
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// In order to do this, we need to set up indexes "id".
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logObjStore.createIndex("id", "id", { unique: false });
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logObjStore.add(
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this._generateLogEntry(
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new Date() + " ::: Log database was created.",
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),
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);
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const lastModifiedStore = db.createObjectStore("logslastmod", {
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keyPath: "id",
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});
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lastModifiedStore.add(this._generateLastModifiedTime());
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};
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2018-04-13 03:34:16 +03:00
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});
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}
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/**
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* Flush logs to disk.
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*
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* There are guards to protect against race conditions in order to ensure
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* that all previous flushes have completed before the most recent flush.
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* Consider without guards:
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* - A calls flush() periodically.
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* - B calls flush() and wants to send logs immediately afterwards.
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* - If B doesn't wait for A's flush to complete, B will be missing the
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* contents of A's flush.
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* To protect against this, we set 'flushPromise' when a flush is ongoing.
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* Subsequent calls to flush() during this period will chain another flush,
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* then keep returning that same chained flush.
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*
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* This guarantees that we will always eventually do a flush when flush() is
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* called.
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*
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* @return {Promise} Resolved when the logs have been flushed.
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*/
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flush() {
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// check if a flush() operation is ongoing
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if (this.flushPromise && this.flushPromise.isPending()) {
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if (this.flushAgainPromise && this.flushAgainPromise.isPending()) {
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// this is the 3rd+ time we've called flush() : return the same
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// promise.
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return this.flushAgainPromise;
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}
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// queue up a flush to occur immediately after the pending one
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// completes.
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this.flushAgainPromise = this.flushPromise.then(() => {
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return this.flush();
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});
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return this.flushAgainPromise;
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}
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// there is no flush promise or there was but it has finished, so do
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// a brand new one, destroying the chain which may have been built up.
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this.flushPromise = new Promise((resolve, reject) => {
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if (!this.db) {
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// not connected yet or user rejected access for us to r/w to
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// the db.
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reject(new Error("No connected database"));
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return;
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}
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const lines = this.logger.flush();
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if (lines.length === 0) {
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resolve();
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return;
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}
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2018-10-12 05:58:20 +03:00
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const txn = this.db.transaction(["logs", "logslastmod"], "readwrite");
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const objStore = txn.objectStore("logs");
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2018-04-13 03:34:16 +03:00
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txn.oncomplete = (event) => {
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resolve();
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};
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txn.onerror = (event) => {
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console.error(
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2018-10-12 05:58:20 +03:00
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"Failed to flush logs : ", event,
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);
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reject(
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new Error("Failed to write logs: " + event.target.errorCode),
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);
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2018-10-12 05:58:20 +03:00
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};
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2018-04-13 03:34:16 +03:00
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objStore.add(this._generateLogEntry(lines));
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2018-10-12 05:58:20 +03:00
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const lastModStore = txn.objectStore("logslastmod");
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2018-04-13 03:34:16 +03:00
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lastModStore.put(this._generateLastModifiedTime());
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});
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return this.flushPromise;
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}
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/**
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* Consume the most recent logs and return them. Older logs which are not
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* returned are deleted at the same time, so this can be called at startup
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* to do house-keeping to keep the logs from growing too large.
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*
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* @return {Promise<Object[]>} Resolves to an array of objects. The array is
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* sorted in time (oldest first) based on when the log file was created (the
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* log ID). The objects have said log ID in an "id" field and "lines" which
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* is a big string with all the new-line delimited logs.
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*/
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async consume() {
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const db = this.db;
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// Returns: a string representing the concatenated logs for this ID.
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// Stops adding log fragments when the size exceeds maxSize
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function fetchLogs(id, maxSize) {
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2018-10-15 17:23:44 +03:00
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const objectStore = db.transaction("logs", "readonly").objectStore("logs");
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return new Promise((resolve, reject) => {
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2019-09-26 20:46:19 +03:00
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const query = objectStore.index("id").openCursor(IDBKeyRange.only(id), 'prev');
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2018-10-15 17:23:44 +03:00
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let lines = '';
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query.onerror = (event) => {
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reject(new Error("Query failed: " + event.target.errorCode));
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};
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query.onsuccess = (event) => {
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const cursor = event.target.result;
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if (!cursor) {
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resolve(lines);
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return; // end of results
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}
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2019-10-04 16:56:46 +03:00
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lines = cursor.value.lines + lines;
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if (lines.length >= maxSize) {
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2018-10-15 17:23:44 +03:00
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resolve(lines);
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} else {
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cursor.continue();
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}
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2018-10-12 05:58:20 +03:00
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};
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2018-04-13 03:34:16 +03:00
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});
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}
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// Returns: A sorted array of log IDs. (newest first)
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function fetchLogIds() {
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// To gather all the log IDs, query for all records in logslastmod.
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const o = db.transaction("logslastmod", "readonly").objectStore(
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2018-10-12 05:58:20 +03:00
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"logslastmod",
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);
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return selectQuery(o, undefined, (cursor) => {
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return {
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id: cursor.value.id,
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ts: cursor.value.ts,
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};
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}).then((res) => {
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// Sort IDs by timestamp (newest first)
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return res.sort((a, b) => {
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return b.ts - a.ts;
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}).map((a) => a.id);
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});
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}
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function deleteLogs(id) {
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return new Promise((resolve, reject) => {
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const txn = db.transaction(
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2018-10-12 05:58:20 +03:00
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["logs", "logslastmod"], "readwrite",
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2018-04-13 03:34:16 +03:00
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);
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const o = txn.objectStore("logs");
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// only load the key path, not the data which may be huge
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const query = o.index("id").openKeyCursor(IDBKeyRange.only(id));
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query.onsuccess = (event) => {
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const cursor = event.target.result;
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if (!cursor) {
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return;
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}
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o.delete(cursor.primaryKey);
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cursor.continue();
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};
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txn.oncomplete = () => {
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resolve();
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};
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txn.onerror = (event) => {
|
|
|
|
reject(
|
|
|
|
new Error(
|
|
|
|
"Failed to delete logs for " +
|
2018-10-12 05:58:20 +03:00
|
|
|
`'${id}' : ${event.target.errorCode}`,
|
|
|
|
),
|
2018-04-13 03:34:16 +03:00
|
|
|
);
|
|
|
|
};
|
|
|
|
// delete last modified entries
|
|
|
|
const lastModStore = txn.objectStore("logslastmod");
|
|
|
|
lastModStore.delete(id);
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
2018-10-12 05:58:20 +03:00
|
|
|
const allLogIds = await fetchLogIds();
|
2018-04-13 03:34:16 +03:00
|
|
|
let removeLogIds = [];
|
2018-10-12 05:58:20 +03:00
|
|
|
const logs = [];
|
2018-04-13 03:34:16 +03:00
|
|
|
let size = 0;
|
|
|
|
for (let i = 0; i < allLogIds.length; i++) {
|
2019-10-04 16:56:46 +03:00
|
|
|
const lines = await fetchLogs(allLogIds[i], MAX_LOG_SIZE - size);
|
2018-04-13 03:34:16 +03:00
|
|
|
|
2019-10-04 16:56:46 +03:00
|
|
|
// always add the log file: fetchLogs will truncate once the maxSize we give it is
|
|
|
|
// exceeded, so we'll go over the max but only by one fragment's worth.
|
|
|
|
logs.push({
|
|
|
|
lines: lines,
|
|
|
|
id: allLogIds[i],
|
|
|
|
});
|
|
|
|
size += lines.length;
|
|
|
|
|
|
|
|
// If fetchLogs truncated we'll now be at or over the size limit,
|
|
|
|
// in which case we should stop and remove the rest of the log files.
|
|
|
|
if (size >= MAX_LOG_SIZE) {
|
2018-04-13 03:34:16 +03:00
|
|
|
// the remaining log IDs should be removed. If we go out of
|
|
|
|
// bounds this is just []
|
|
|
|
removeLogIds = allLogIds.slice(i + 1);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
if (removeLogIds.length > 0) {
|
|
|
|
console.log("Removing logs: ", removeLogIds);
|
|
|
|
// Don't await this because it's non-fatal if we can't clean up
|
|
|
|
// logs.
|
|
|
|
Promise.all(removeLogIds.map((id) => deleteLogs(id))).then(() => {
|
|
|
|
console.log(`Removed ${removeLogIds.length} old logs.`);
|
|
|
|
}, (err) => {
|
|
|
|
console.error(err);
|
2018-10-12 05:58:20 +03:00
|
|
|
});
|
2018-04-13 03:34:16 +03:00
|
|
|
}
|
|
|
|
return logs;
|
|
|
|
}
|
|
|
|
|
|
|
|
_generateLogEntry(lines) {
|
|
|
|
return {
|
|
|
|
id: this.id,
|
|
|
|
lines: lines,
|
2018-10-12 05:58:20 +03:00
|
|
|
index: this.index++,
|
2018-04-13 03:34:16 +03:00
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
_generateLastModifiedTime() {
|
|
|
|
return {
|
|
|
|
id: this.id,
|
|
|
|
ts: Date.now(),
|
|
|
|
};
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Helper method to collect results from a Cursor and promiseify it.
|
|
|
|
* @param {ObjectStore|Index} store The store to perform openCursor on.
|
|
|
|
* @param {IDBKeyRange=} keyRange Optional key range to apply on the cursor.
|
|
|
|
* @param {Function} resultMapper A function which is repeatedly called with a
|
|
|
|
* Cursor.
|
|
|
|
* Return the data you want to keep.
|
|
|
|
* @return {Promise<T[]>} Resolves to an array of whatever you returned from
|
|
|
|
* resultMapper.
|
|
|
|
*/
|
|
|
|
function selectQuery(store, keyRange, resultMapper) {
|
|
|
|
const query = store.openCursor(keyRange);
|
|
|
|
return new Promise((resolve, reject) => {
|
2018-10-12 05:58:20 +03:00
|
|
|
const results = [];
|
2018-04-13 03:34:16 +03:00
|
|
|
query.onerror = (event) => {
|
|
|
|
reject(new Error("Query failed: " + event.target.errorCode));
|
|
|
|
};
|
|
|
|
// collect results
|
|
|
|
query.onsuccess = (event) => {
|
|
|
|
const cursor = event.target.result;
|
|
|
|
if (!cursor) {
|
|
|
|
resolve(results);
|
|
|
|
return; // end of results
|
|
|
|
}
|
|
|
|
results.push(resultMapper(cursor));
|
|
|
|
cursor.continue();
|
2018-10-12 05:58:20 +03:00
|
|
|
};
|
2018-04-13 03:34:16 +03:00
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
module.exports = {
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Configure rage shaking support for sending bug reports.
|
|
|
|
* Modifies globals.
|
|
|
|
* @return {Promise} Resolves when set up.
|
|
|
|
*/
|
|
|
|
init: function() {
|
2018-04-20 16:06:09 +03:00
|
|
|
if (global.mx_rage_initPromise) {
|
|
|
|
return global.mx_rage_initPromise;
|
2018-04-13 03:34:16 +03:00
|
|
|
}
|
2018-04-20 16:06:09 +03:00
|
|
|
global.mx_rage_logger = new ConsoleLogger();
|
|
|
|
global.mx_rage_logger.monkeyPatch(window.console);
|
2018-04-13 03:34:16 +03:00
|
|
|
|
|
|
|
// just *accessing* indexedDB throws an exception in firefox with
|
|
|
|
// indexeddb disabled.
|
|
|
|
let indexedDB;
|
|
|
|
try {
|
|
|
|
indexedDB = window.indexedDB;
|
2018-10-12 05:58:20 +03:00
|
|
|
} catch (e) {}
|
2018-04-13 03:34:16 +03:00
|
|
|
|
|
|
|
if (indexedDB) {
|
2018-04-20 16:06:09 +03:00
|
|
|
global.mx_rage_store = new IndexedDBLogStore(indexedDB, global.mx_rage_logger);
|
|
|
|
global.mx_rage_initPromise = global.mx_rage_store.connect();
|
|
|
|
return global.mx_rage_initPromise;
|
2018-04-13 03:34:16 +03:00
|
|
|
}
|
2018-04-20 16:06:09 +03:00
|
|
|
global.mx_rage_initPromise = Promise.resolve();
|
|
|
|
return global.mx_rage_initPromise;
|
2018-04-13 03:34:16 +03:00
|
|
|
},
|
|
|
|
|
|
|
|
flush: function() {
|
2018-04-20 16:06:09 +03:00
|
|
|
if (!global.mx_rage_store) {
|
2018-04-13 03:34:16 +03:00
|
|
|
return;
|
|
|
|
}
|
2018-04-20 16:06:09 +03:00
|
|
|
global.mx_rage_store.flush();
|
2018-04-13 03:34:16 +03:00
|
|
|
},
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Clean up old logs.
|
|
|
|
* @return Promise Resolves if cleaned logs.
|
|
|
|
*/
|
|
|
|
cleanup: async function() {
|
2018-04-20 16:06:09 +03:00
|
|
|
if (!global.mx_rage_store) {
|
2018-04-13 03:34:16 +03:00
|
|
|
return;
|
|
|
|
}
|
2018-04-20 16:06:09 +03:00
|
|
|
await global.mx_rage_store.consume();
|
2018-04-13 03:34:16 +03:00
|
|
|
},
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get a recent snapshot of the logs, ready for attaching to a bug report
|
|
|
|
*
|
|
|
|
* @return {Array<{lines: string, id, string}>} list of log data
|
|
|
|
*/
|
|
|
|
getLogsForReport: async function() {
|
2018-04-20 16:06:09 +03:00
|
|
|
if (!global.mx_rage_logger) {
|
2018-04-13 03:34:16 +03:00
|
|
|
throw new Error(
|
2018-10-12 05:58:20 +03:00
|
|
|
"No console logger, did you forget to call init()?",
|
2018-04-13 03:34:16 +03:00
|
|
|
);
|
|
|
|
}
|
|
|
|
// If in incognito mode, store is null, but we still want bug report
|
|
|
|
// sending to work going off the in-memory console logs.
|
2018-04-20 16:06:09 +03:00
|
|
|
if (global.mx_rage_store) {
|
2018-04-13 03:34:16 +03:00
|
|
|
// flush most recent logs
|
2018-04-20 16:06:09 +03:00
|
|
|
await global.mx_rage_store.flush();
|
|
|
|
return await global.mx_rage_store.consume();
|
2018-10-12 05:58:20 +03:00
|
|
|
} else {
|
2018-04-13 03:34:16 +03:00
|
|
|
return [{
|
2018-04-20 16:06:09 +03:00
|
|
|
lines: global.mx_rage_logger.flush(true),
|
2018-04-13 03:34:16 +03:00
|
|
|
id: "-",
|
|
|
|
}];
|
|
|
|
}
|
|
|
|
},
|
|
|
|
};
|