An experimental integration of Flask on OpenWhisk

Currently there is a single function called invoke that will translate a raw HTTP request from OpenWhisk into a WSGI/Flask request and then back into an OpenWhisk response.

You just need to create the main program (__main__.py) that looks like the following:

from flaskwsk.handle import invoke
from web import app

def main(args):
   return invoke(app,args)

In the above app is the Flask application object.

To package you need to include in the zip file:

1. The virtualenv with all the packaged you Use
2. The invocation including the __main__.py file

Then you create a raw HTTP action:

wsk action create myapp --kind python:3 myapp.zip --web raw

The makefile will package a deploy an example application that just echoes a request:

To build and deploy:

make setup
make
make create

To test:

export OPENWHISK=https://...
curl  -v -X PUT -d "test" -H "Content-Type: text/plain" $OPENWHISK/flask/echo

or:

make test OPENWHISK=https://...

where OPENWHISK is your server URL (e.g., https://openwhisk.ng.bluemix.net/api/v1/web/...)

and you should see output like:

{
  "headers": {
    "Accept": "*/*",
    "Cache-Control": "no-transform",
    "Connection": "close",
    "Host": "...",
    "User-Agent": "curl/7.53.1",
    ...
  }, 
  "method": "GET"
}