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author | Florian Dold <florian.dold@gmail.com> | 2019-12-12 20:53:15 +0100 |
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committer | Florian Dold <florian.dold@gmail.com> | 2019-12-12 20:53:15 +0100 |
commit | 74433c3e05734aa1194049fcbcaa92c70ce61c74 (patch) | |
tree | d30e79c9ac3fd5720de628f6a9764354ec69c648 /src/operations/errors.ts | |
parent | cc137c87394ec34d2f54d69fe896dfdf3feec5ea (diff) | |
download | wallet-core-74433c3e05734aa1194049fcbcaa92c70ce61c74.tar.xz |
refactor: re-structure type definitions
Diffstat (limited to 'src/operations/errors.ts')
-rw-r--r-- | src/operations/errors.ts | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/operations/errors.ts b/src/operations/errors.ts new file mode 100644 index 000000000..7e97fdb3c --- /dev/null +++ b/src/operations/errors.ts @@ -0,0 +1,84 @@ +import { OperationError } from "../types/walletTypes"; + +/* + 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/> + */ + +/** + * This exception is there to let the caller know that an error happened, + * but the error has already been reported by writing it to the database. + */ +export class OperationFailedAndReportedError extends Error { + constructor(message: string) { + super(message); + + // Set the prototype explicitly. + Object.setPrototypeOf(this, OperationFailedAndReportedError.prototype); + } +} + +/** + * This exception is thrown when an error occured and the caller is + * responsible for recording the failure in the database. + */ +export class OperationFailedError extends Error { + constructor(message: string, public err: OperationError) { + super(message); + + // Set the prototype explicitly. + Object.setPrototypeOf(this, OperationFailedError.prototype); + } +} + +/** + * Run an operation and call the onOpError callback + * when there was an exception or operation error that must be reported. + * The cause will be re-thrown to the caller. + */ +export async function guardOperationException<T>( + op: () => Promise<T>, + onOpError: (e: OperationError) => Promise<void>, +): Promise<T> { + try { + return await op(); + } catch (e) { + console.log("guard: caught exception"); + if (e instanceof OperationFailedAndReportedError) { + throw e; + } + if (e instanceof OperationFailedError) { + await onOpError(e.err); + throw new OperationFailedAndReportedError(e.message); + } + if (e instanceof Error) { + console.log("guard: caught Error"); + await onOpError({ + type: "exception", + message: e.message, + details: {}, + }); + throw new OperationFailedAndReportedError(e.message); + } + console.log("guard: caught something else"); + await onOpError({ + type: "exception", + message: "non-error exception thrown", + details: { + value: e.toString(), + }, + }); + throw new OperationFailedAndReportedError(e.message); + } +}
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