8f1af4be14
The structure here might need some documentation and work, but overall the idea is that all calls pass through a CachedEcho instance, which are self-updating.
65 lines
1.8 KiB
TypeScript
65 lines
1.8 KiB
TypeScript
/*
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Copyright 2020 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 { Whenable } from "../../utils/Whenable";
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export type RunFn = () => Promise<void>;
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export enum TransactionStatus {
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Pending,
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DoneSuccess,
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DoneError,
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}
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export class EchoTransaction extends Whenable<TransactionStatus> {
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private _status = TransactionStatus.Pending;
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private didFail = false;
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public constructor(
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public readonly auditName,
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public runFn: RunFn,
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) {
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super();
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}
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public get didPreviouslyFail(): boolean {
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return this.didFail;
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}
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public get status(): TransactionStatus {
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return this._status;
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}
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public run() {
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if (this.status === TransactionStatus.DoneSuccess) {
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throw new Error("Cannot re-run a successful echo transaction");
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}
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this.setStatus(TransactionStatus.Pending);
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this.runFn()
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.then(() => this.setStatus(TransactionStatus.DoneSuccess))
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.catch(() => this.setStatus(TransactionStatus.DoneError));
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}
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private setStatus(status: TransactionStatus) {
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this._status = status;
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if (status === TransactionStatus.DoneError) {
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this.didFail = true;
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} else if (status === TransactionStatus.DoneSuccess) {
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this.didFail = false;
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}
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this.notifyCondition(status);
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}
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}
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