Whisk CLI fails with a cannot invoke action error if 1 of your keys is named response

[sroorda]

Environment details:

• local deployment, vagrant, native ubuntu, Mac OS, Bluemix, ...
• version of docker, vagrant, ubuntu, ...
  Deployed to Bluemix api.ng.bluemix.net

It appears that if you invoke your Cloud Function via the CLI it will fail with
error: Unable to invoke action 'nestedDictionaryError': The connection failed, or timed out. (HTTP status code 200) if you include a key labeled response in your output.

Steps to reproduce the issue:

Create the following Cloud Function in python

def main(args):
    result = {'message': 'error result', 'response': {'key1': 'value1','key2': 'value2' }}

    if args and args['resultType'] and args['resultType'] == 'error':
        return {'message': 'error result', 'response': {'key1': 'value1','key2': 'value2' }}
    else:
        return {'message': 'error result', 'not_response': {'key1': 'value1', 'key2': 'value2'}}

Provide the expected results and outputs:

Provide the actual results and outputs:

Fails

wsk action invoke --result nestedDictionaryError --param resultType "error"
error: Unable to invoke action 'nestedDictionaryError': The connection failed, or timed out. (HTTP status code 200)
Run 'wsk --help' for usage.

Works

wsk action invoke --result nestedDictionaryError
{
    "message": "error result",
    "not_response": {
        "key1": "value1",
        "key2": "value2"
    }
}

Even if response is reserved we should get a better message than that.

Additional information you deem important:

• issue happens only occasionally or under certain circumstances
• changes you did or observed in the environment

[csantanapr]

Issue moved to apache/incubator-openwhisk-cli #128 via ZenHub