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Diffstat (limited to 'packages/taler-wallet-core/src/crypto/workers/synchronousWorkerPlain.ts')
-rw-r--r-- | packages/taler-wallet-core/src/crypto/workers/synchronousWorkerPlain.ts | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/packages/taler-wallet-core/src/crypto/workers/synchronousWorkerPlain.ts b/packages/taler-wallet-core/src/crypto/workers/synchronousWorkerPlain.ts new file mode 100644 index 000000000..058896828 --- /dev/null +++ b/packages/taler-wallet-core/src/crypto/workers/synchronousWorkerPlain.ts @@ -0,0 +1,96 @@ +/* + This file is part of GNU Taler + (C) 2019 GNUnet e.V. + + GNU Taler is free software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along with + GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ + +/** + * Imports. + */ +import { Logger } from "@gnu-taler/taler-util"; +import { + nativeCryptoR, + TalerCryptoInterfaceR, +} from "../cryptoImplementation.js"; +import { CryptoWorker } from "./cryptoWorkerInterface.js"; +import { processRequestWithImpl } from "./worker-common.js"; + +const logger = new Logger("synchronousWorker.ts"); + +/** + * Worker implementation that synchronously executes cryptographic + * operations. + */ +export class SynchronousCryptoWorkerPlain implements CryptoWorker { + /** + * Function to be called when we receive a message from the worker thread. + */ + onmessage: undefined | ((m: any) => void); + + /** + * Function to be called when we receive an error from the worker thread. + */ + onerror: undefined | ((m: any) => void); + + cryptoImplR: TalerCryptoInterfaceR; + + constructor() { + this.onerror = undefined; + this.onmessage = undefined; + this.cryptoImplR = { ...nativeCryptoR }; + } + + /** + * Add an event listener for either an "error" or "message" event. + */ + addEventListener(event: "message" | "error", fn: (x: any) => void): void { + switch (event) { + case "message": + this.onmessage = fn; + break; + case "error": + this.onerror = fn; + break; + } + } + + private dispatchMessage(msg: any): void { + if (this.onmessage) { + this.onmessage(msg); + } + } + + /** + * Send a message to the worker thread. + */ + postMessage(msg: any): void { + const handleRequest = async () => { + const responseMsg = await processRequestWithImpl(msg, this.cryptoImplR); + try { + setTimeout(() => this.dispatchMessage(responseMsg), 0); + } catch (e) { + logger.error("got error during dispatch", e); + } + }; + handleRequest().catch((e) => { + logger.error("Error while handling crypto request:", e); + }); + } + + /** + * Forcibly terminate the worker thread. + */ + terminate(): void { + // This is a no-op. + } +} |