forked from mystiq/hydrogen-web
150 lines
5 KiB
JavaScript
150 lines
5 KiB
JavaScript
/*
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Copyright 2020 Bruno Windels <bruno@windels.cloud>
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Copyright 2021 The Matrix.org Foundation C.I.C.
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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 {LogItem} from "./LogItem.js";
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import {LogLevel, LogFilter} from "./LogFilter.js";
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export class BaseLogger {
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constructor({platform}) {
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this._openItems = new Set();
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this._platform = platform;
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}
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log(labelOrValues, logLevel = LogLevel.Info) {
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const item = new LogItem(labelOrValues, logLevel, null, this);
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item._end = item._start;
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this._persistItem(item, null, false);
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}
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/** if item is a log item, wrap the callback in a child of it, otherwise start a new root log item. */
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wrapOrRun(item, labelOrValues, callback, logLevel = null, filterCreator = null) {
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if (item) {
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return item.wrap(labelOrValues, callback, logLevel, filterCreator);
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} else {
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return this.run(labelOrValues, callback, logLevel, filterCreator);
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}
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}
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/** run a callback in detached mode,
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where the (async) result or errors are not propagated but still logged.
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Useful to pair with LogItem.refDetached.
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@return {LogItem} the log item added, useful to pass to LogItem.refDetached */
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runDetached(labelOrValues, callback, logLevel = null, filterCreator = null) {
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if (logLevel === null) {
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logLevel = LogLevel.Info;
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}
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const item = new LogItem(labelOrValues, logLevel, null, this);
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this._run(item, callback, logLevel, filterCreator, false /* don't throw, nobody is awaiting */);
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return item;
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}
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/** run a callback wrapped in a log operation.
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Errors and duration are transparently logged, also for async operations.
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Whatever the callback returns is returned here. */
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run(labelOrValues, callback, logLevel = null, filterCreator = null) {
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if (logLevel === null) {
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logLevel = LogLevel.Info;
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}
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const item = new LogItem(labelOrValues, logLevel, null, this);
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return this._run(item, callback, logLevel, filterCreator, true);
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}
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_run(item, callback, logLevel, filterCreator, shouldThrow) {
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this._openItems.add(item);
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const finishItem = () => {
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let filter = new LogFilter();
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if (filterCreator) {
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try {
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filter = filterCreator(filter, item);
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} catch (err) {
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console.error("Error while creating log filter", err);
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}
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} else {
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// if not filter is specified, filter out anything lower than the initial log level
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filter = filter.minLevel(logLevel);
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}
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try {
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this._persistItem(item, filter, false);
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} catch (err) {
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console.error("Could not persist log item", err);
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}
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this._openItems.delete(item);
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};
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try {
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const result = item.run(callback);
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if (result instanceof Promise) {
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return result.then(promiseResult => {
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finishItem();
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return promiseResult;
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}, err => {
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finishItem();
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if (shouldThrow) {
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throw err;
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}
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});
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} else {
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finishItem();
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return result;
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}
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} catch (err) {
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finishItem();
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if (shouldThrow) {
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throw err;
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}
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}
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}
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_finishOpenItems() {
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for (const openItem of this._openItems) {
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openItem.finish();
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try {
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// for now, serialize with an all-permitting filter
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// as the createFilter function would get a distorted image anyway
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// about the duration of the item, etc ...
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// true for force finish
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this._persistItem(openItem, new LogFilter(), true);
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} catch (err) {
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console.error("Could not serialize log item", err);
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}
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}
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this._openItems.clear();
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}
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_persistItem() {
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throw new Error("not implemented");
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}
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async export() {
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throw new Error("not implemented");
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}
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// expose log level without needing
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get level() {
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return LogLevel;
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}
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_now() {
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return this._platform.clock.now();
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}
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_createRefId() {
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return Math.round(this._platform.random() * Number.MAX_SAFE_INTEGER);
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}
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}
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