Richard van der HoffandGitHub
f97df3eb3b
* Handle errors returned from Seshat Fix a bug which caused errors from Seshat to be swallowed, giving only "Unknown error". * fix type casting
67 lines
2.2 KiB
TypeScript
67 lines
2.2 KiB
TypeScript
/*
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Copyright 2022-2024 New Vector Ltd.
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SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
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Please see LICENSE files in the repository root for full details.
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*/
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import { logger } from "matrix-js-sdk/src/logger";
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import { type ElectronChannel } from "../../@types/global";
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interface IPCPayload {
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id?: number;
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error?: string | { message: string };
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reply?: any;
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}
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export class IPCManager {
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private pendingIpcCalls: { [ipcCallId: number]: PromiseWithResolvers<any> } = {};
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private nextIpcCallId = 0;
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public constructor(
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private readonly sendChannel: ElectronChannel = "ipcCall",
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private readonly recvChannel: ElectronChannel = "ipcReply",
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) {
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if (!window.electron) {
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throw new Error("Cannot instantiate ElectronPlatform, window.electron is not set");
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}
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window.electron.on(this.recvChannel, this.onIpcReply);
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}
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public async call(name: string, ...args: any[]): Promise<any> {
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// TODO this should be moved into the preload.js file.
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const ipcCallId = ++this.nextIpcCallId;
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const deferred = Promise.withResolvers<any>();
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this.pendingIpcCalls[ipcCallId] = deferred;
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// Maybe add a timeout to these? Probably not necessary.
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window.electron!.send(this.sendChannel, { id: ipcCallId, name, args });
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return deferred.promise;
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}
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private onIpcReply = (_ev: Event, payload: IPCPayload): void => {
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if (payload.id === undefined) {
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logger.warn("Ignoring IPC reply with no ID");
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return;
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}
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if (this.pendingIpcCalls[payload.id] === undefined) {
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logger.warn("Unknown IPC payload ID: " + payload.id);
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return;
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}
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const callbacks = this.pendingIpcCalls[payload.id];
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delete this.pendingIpcCalls[payload.id];
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if (payload.error) {
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// `seshat.ts` sends a JavaScript object with a `message` property. Turn it into a proper Error.
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let error = payload.error;
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if (typeof error === "object" && error.message) {
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error = new Error(error.message);
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}
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callbacks.reject(error);
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} else {
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callbacks.resolve(payload.reply);
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}
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};
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}
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