khanon
37 lines
1.0 KiB
TypeScript
37 lines
1.0 KiB
TypeScript
import { RequestHandler } from "express";
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import { handleInternalError } from "../common";
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import {
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RequestPreprocessor,
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checkContextSize,
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setApiFormat,
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transformOutboundPayload,
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} from ".";
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/**
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* Returns a middleware function that processes the request body into the given
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* API format, and then sequentially runs the given additional preprocessors.
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*/
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export const createPreprocessorMiddleware = (
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apiFormat: Parameters<typeof setApiFormat>[0],
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additionalPreprocessors?: RequestPreprocessor[]
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): RequestHandler => {
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const preprocessors: RequestPreprocessor[] = [
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setApiFormat(apiFormat),
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...(additionalPreprocessors ?? []),
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transformOutboundPayload,
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checkContextSize,
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];
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return async function executePreprocessors(req, res, next) {
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try {
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for (const preprocessor of preprocessors) {
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await preprocessor(req);
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}
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next();
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} catch (error) {
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req.log.error(error, "Error while executing request preprocessor");
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handleInternalError(error as Error, req, res);
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}
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};
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};
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