Couldn't get it to work for a simple express server about aws-lambda-http-server

[JamesKyburz]

It seems to have been an issue with supporting both api gateway 1 and 2.

When I last tested it version was sent as 1.0 in api gateway 1 (now it is missing - this caused my validation to fail).

I have published version 0.2.3 with a fix, if no version exists in the payload the version defaults to 1.0.

[JamesKyburz]

I can't find when but I think the payload of the api gateway v2 request changed since I last tested it.

In any case please update again and your httpAPI endpoint should now work

[JamesKyburz]

How is the function invoked? The event payload should have httpMethod set when invoked by http.

[shivkanthb]

Once deployed I just hit the url directly on the browser. That should automatically set the method to GET right?

[JamesKyburz]

Could you post your lambda code?

[shivkanthb]

Sure!

server.js

const express = require('express');
 
const app = express();

app.get('/', (req, res) => {
  return res.json({ message: 'Hello world!'});
})
app.get('/hello', (req, res) => {
  return res.send('world');
});
 
app.listen(3000, () =>
  console.log('Example app listening on port 3000!'),
);

and lambda.js

exports.proxy = require('aws-lambda-http-server')
require('./server.js')

serverless.yml

service: xpresslamb
provider:
  name: aws
  runtime: nodejs12.x
  region: eu-west-1
functions:
  proxy:
    handler: lambda.proxy
    events:
      - http:
          path: /{proxy+}
          method: any
      - http:
          path: ''
          method: any

[JamesKyburz]

@shivkanthb could you please check it now works for you with the latest version?

[shivkanthb]

Hey @JamesKyburz, Thank you for the quick fix! Did an npm update and sls deploy and its working great now for the REST API.

Deployed another one to use the HTTP api with the following serverless.yml file

service: xpresslambhttp
provider:
  name: aws
  runtime: nodejs12.x
  region: eu-west-1
functions:
  proxy:
    handler: lambda.proxy
    events:
      - httpApi: "*"

But I get the following error

2020-12-14T06:52:36.005Z	54cc8395-bc9f-4553-a426-e6499f6086fb	ERROR	TypeError: Cannot read property 'toLowerCase' of undefined
    at Route._handles_method (/var/task/node_modules/express/lib/router/route.js:63:21)
    at next (/var/task/node_modules/express/lib/router/index.js:244:30)
    at expressInit (/var/task/node_modules/express/lib/middleware/init.js:40:5)
    at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (/var/task/node_modules/express/lib/router/index.js:317:13)
    at /var/task/node_modules/express/lib/router/index.js:284:7
    at Function.process_params (/var/task/node_modules/express/lib/router/index.js:335:12)
    at next (/var/task/node_modules/express/lib/router/index.js:275:10)
    at query (/var/task/node_modules/express/lib/middleware/query.js:45:5)
    at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5)
2020-12-14T06:52:36.005Z 54cc8395-bc9f-4553-a426-e6499f6086fb ERROR TypeError: Cannot read property 'toLowerCase' of undefined at Route._handles_method (/var/task/node_modules/express/lib/router/route.js:63:21) at next (/var/task/node_modules/express/lib/router/index.js:244:30) at expressInit (/var/task/node_modules/express/lib/middleware/init.js:40:5) at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5) at trim_prefix (/var/task/node_modules/express/lib/router/index.js:317:13) at /var/task/node_modules/express/lib/router/index.js:284:7 at Function.process_params (/var/task/node_modules/express/lib/router/index.js:335:12) at next (/var/task/node_modules/express/lib/router/index.js:275:10) at query (/var/task/node_modules/express/lib/middleware/query.js:45:5) at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5)

Im invoking again by just hitting the endpoint on the browser! Anything I'm missing here?

[shivkanthb]

Thanks James! Updated and works now! Really appreciate it :)

[JamesKyburz]

Great stufff! Thanks for identifying the problem.