TypeError When Invoking Python (serverless v5.5.0)

[paulcruseSG]

Trying to invoke a python lambda function, get this error:

/Users/paulcruse/Developer/code/deploy-integration-tests/node_modules/serverless-offline/src/index.js:928
                  response.statusCode = statusCode = result.statusCode || 200;

TypeError: Cannot read property 'statusCode' of null
    at createLambdaContext (/Users/paulcruse/Developer/code/deploy-integration-tests/node_modules/serverless-offline/src/index.js:928:61)
    at Object.fail (/Users/paulcruse/Developer/code/deploy-integration-tests/node_modules/serverless-offline/src/createLambdaContext.js:21:18)
    at ChildProcess.process.on.code (/Users/paulcruse/Developer/code/deploy-integration-tests/node_modules/serverless-offline/src/functionHelper.js:71:19)
    at emitTwo (events.js:126:13)
    at ChildProcess.emit (events.js:214:7)
    at maybeClose (internal/child_process.js:925:16)
    at Socket.stream.socket.on (internal/child_process.js:346:11)
    at emitOne (events.js:116:13)
    at Socket.emit (events.js:211:7)
    at Pipe._handle.close [as _onclose] (net.js:557:12)

This my yaml file set-up:

plugins:
    - serverless-plugin-bind-deployment-id
    - serverless-python-requirements
    - serverless-sqs-local
    - serverless-dynamodb-local
    - serverless-offline
custom:
    serverless-offline:
        port: 9000
        prefix: ${self:custom.base_path}
        stage: local
        region: us-east-1
        noAuth: true

[dherault]

Hello @paulcruseSG
You're not the first to have this issue: #722
What does your lambda looks like ? I'm fixing this in the next version I'm tired of this bug.

[dherault]

Fixed in v5.5.1

[paulcruseSG]

@dherault This is a python based lambda using a function decorator:

This is the file being invoked:

@apigateway_handler()
def handle(client):
    client.response_body = hello_word(client.request_body)

This is the decorator code:

def apigateway_handler(**kwargs):
    def decorator_func(func):
        def wrapper(event, context):
            client = ApiGatewayFramework(event, **kwargs)
            if client.validate_request_and_permissions(**kwargs):
                func(client)
            return client.response
        return wrapper
    return decorator_func

And this is what client.response spits out:

@property
def response(self):
    return {
        'headers': self.response_headers,
        'statusCode': self.response_code, # response_code defaults to 200 when not explicitly set
        'body': self.response_body
    }

But thanks for working on a fix so fast...

[dnalborczyk]

@paulcruseSG did v5.5.1 fix your issue?

[dherault]

I think not

[dnalborczyk]

@paulcruseSG I just reverted a commit which broke the functionality. should be fixed with the next release. (note: there still seems to be a timeout issue.)

from npm: I fairly safe version to use should be v5.4.2 (until master is released)

[dherault]

v5.6.1

[paulcruseSG]

@dherault @dnalborczyk Thanks for the quick response and fix; was away for July 4th and come back to see a fix. Will give this a look later today, but either way thanks for the fix

[sumeetweb]

Installing python-dev package fixed this for me.