@schibsted/middy-error-handler
Advanced tools
Middy middleware for adding caching headers to success response and errors
Automatically handles any uncaught errors and creates a proper HTTP response
for them (using the message and the status code provided by the error object). We recommend generating these HTTP errors with the npm module http-errors.
This middleware should be set as the last error handler unless you also want to register the http-reponse-serializer. If so, this middleware should come second-last and the http-response-serializer should come last.
This is an alternative to standard Middy error handler with the following differences:
statusCode and messageTo install this middleware you can use NPM:
npm install --save @schibsted/middy-error-handler
logger (defaults to console) - a logging function that is invoked with the current error as an argument. You can pass false if you don't want the logging to happen.level (defaults to error) - log level to use for the error log entryexposeStackTrace (defaults to false) - if true, the stack trace will be exposed in the response bodyfilter (function, defaults to always returning true) - a function that is invoked with the current error as an argument. If it returns true, the error is logged and its stack trace returned as long as exposeStackTrace is also true, otherwise it is not.const middy = require('@middy/core');
const createError = require('http-errors');
const errorHandler = require('@schibsted/middy-error-handler');
const handler = middy(() => {
throw new createError.ServiceUnavailable('Service not available');
});
handler.use(errorHandler({exposeStackTrace: true}));
handler({}, {}).then((response) => {
console.log(response);
// {
// statusCode: 503,
// body: '{"statusCode":503,"message":"Service not available","stack":"..."}'
// stack: '...'
// }
});
const middy = require('@middy/core');
const createError = require('http-errors');
const errorHandler = require('@schibsted/middy-error-handler');
const { LambdaLog } = require('lambda-log');
const logger = new LambdaLog({
tags: ['foobar'],
});
const handler = middy(() => {
throw new createError.ServiceUnavailable('Service not available');
});
handler.use(errorHandler({
filter: (err) => err.statusCode !== 404, // don't log 404 errors, they happen a lot
logger
}));
handler({}, {}).then((response) => {
// same + also executes logger.error function
console.log(response);
// {
// statusCode: 503,
// body: '{"statusCode":503,"message":"Service not available","stack":"..."}'
// stack: '...'
// }
});
Everyone is very welcome to contribute to this repository. Feel free to raise issues or to submit Pull Requests.
4.2.2 (2022-08-29)
FAQs
Middy middleware for adding caching headers to success response and errors
The npm package @schibsted/middy-error-handler receives a total of 1,108 weekly downloads. As such, @schibsted/middy-error-handler popularity was classified as popular.
We found that @schibsted/middy-error-handler demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 5 open source maintainers collaborating on the project.
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