128 lines
2.9 KiB
TypeScript
128 lines
2.9 KiB
TypeScript
/*
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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 {LogLevel} from "./LogFilter";
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import type {ILogger, ILogItem, ILogReporter, LabelOrValues, LogCallback, LogItemValues} from "./types";
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function noop (): void {}
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export class NullLogger implements ILogger {
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public readonly item: ILogItem = new NullLogItem(this);
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log(): void {}
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addReporter() {}
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get reporters(): ReadonlyArray<ILogReporter> {
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return [];
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}
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getOpenRootItems(): Iterable<ILogItem> {
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return [];
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}
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forceFinish(): void {}
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child(): ILogItem {
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return this.item;
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}
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run<T>(_, callback: LogCallback<T>): T {
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return callback(this.item);
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}
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wrapOrRun<T>(item: ILogItem | undefined, _, callback: LogCallback<T>): T {
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if (item) {
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return item.wrap(_, callback);
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} else {
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return this.run(_, callback);
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}
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}
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runDetached(_, callback): ILogItem {
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new Promise(r => r(callback(this.item))).then(noop, noop);
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return this.item;
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}
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get level(): typeof LogLevel {
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return LogLevel;
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}
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}
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export class NullLogItem implements ILogItem {
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public readonly logger: NullLogger;
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public readonly logLevel: LogLevel;
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public children?: Array<ILogItem>;
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public values: LogItemValues;
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public error?: Error;
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constructor(logger: NullLogger) {
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this.logger = logger;
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}
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wrap<T>(_: LabelOrValues, callback: LogCallback<T>): T {
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return this.run(callback);
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}
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run<T>(callback: LogCallback<T>): T {
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return callback(this);
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}
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log(): ILogItem {
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return this;
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}
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set(): ILogItem { return this; }
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runDetached(_: LabelOrValues, callback: LogCallback<unknown>): ILogItem {
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new Promise(r => r(callback(this))).then(noop, noop);
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return this;
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}
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wrapDetached(_: LabelOrValues, _callback: LogCallback<unknown>): void {
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return this.refDetached();
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}
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refDetached(): void {}
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ensureRefId(): void {}
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get level(): typeof LogLevel {
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return LogLevel;
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}
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get duration(): 0 {
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return 0;
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}
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catch(err: Error): Error {
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return err;
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}
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child(): ILogItem {
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return this;
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}
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finish(): void {}
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forceFinish(): void {}
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serialize(): undefined {
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return undefined;
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}
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}
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export const Instance = new NullLogger();
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