gristlabs_grist-core/app/server/lib/expressWrap.ts

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import {RequestWithLogin} from 'app/server/lib/Authorizer';
import * as log from 'app/server/lib/log';
import * as express from 'express';
/**
* Wrapper for async express endpoints to catch errors and forward them to the error handler.
*/
export function expressWrap(callback: express.RequestHandler): express.RequestHandler {
return async (req, res, next) => {
try {
await callback(req, res, next);
} catch (err) {
next(err);
}
};
}
/**
* Error-handling middleware that responds to errors in json. The status code is taken from
* error.status property (for which ApiError is convenient), and defaults to 500.
*/
export const jsonErrorHandler: express.ErrorRequestHandler = (err, req, res, next) => {
const mreq = req as RequestWithLogin;
log.warn("Error during api call to %s: (%s) user %d params %s body %s", req.path, err.message,
mreq.userId,
JSON.stringify(req.params), JSON.stringify(req.body));
let details = err.details && {...err.details};
const status = details?.status || err.status || 500;
if (details) {
// Remove some details exposed for websocket API only.
delete details.accessMode;
delete details.status; // TODO: reconcile err.status and details.status, no need for both.
if (Object.keys(details).length === 0) { details = undefined; }
}
res.status(status).json({error: err.message || 'internal error', details});
};
/**
* Middleware that responds with a 404 status and a json error object.
*/
export const jsonNotFoundHandler: express.RequestHandler = (req, res, next) => {
res.status(404).json({error: `not found: ${req.url}`});
};