how to make durable_rules docker container listen to 0.0.0.0

[mkkl]

When an event is injected in Durable Rules deployed in a docker container, the host sends back a curl: (52) Empty reply from server message

curl -H "content-type: application/json" -X POST -d '{"name": "mkkl", "location": "JP"}' http://:8000/rules/events curl: (52) Empty reply from server

even though the container's port 5000 is exposed in the Docker file

FROM python:3.6 COPY . /app WORKDIR /app RUN pip install -r requirements.txt EXPOSE 5000 CMD ["python", "rules.py"]

and published it in Dockerrun.aws.json file

{ "AWSEBDockerrunVersion": "1", "Ports": [ { "ContainerPort": 5000, "HostPort": 8000 } ] }

Should the Durable Rules API listen to 0.0.0.0 (any IP address of the host) instead of the 127.0.0.1 (localhost) only? If yes, where in the code I could make that change?

Thank you!

[mkkl]

Update ...

After changing the host_name and port in lang.py

def run_all(databases = None, host_name = '0.0.0.0', port = 8090, routing_rules = None, run = None, state_cache_size = 1024): main_host = create_host(databases, state_cache_size) main_app = interface.Application(main_host, host_name, port, routing_rules, run) main_app.run()

I got the the API to listen to http://0.0.0.0:8090/ when Durable Rules runs locally e.i. python test.py * Running on http://0.0.0.0:8090/ (Press CTRL+C to quit)

However, when a docker container is created (e.g. docker build -t test_container .), the API listens again to http://127.0.0.1:5000/ e.i. docker run -p 8080:8090 test_container * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

Injecting and event from outside the container yields "curl: (52) Empty reply from server" message

curl -H "content-type: application/json" -X POST -d '{"name": "mkkl", "location": "JP"}' http://0.0.0.0:8080/rules/events curl: (52) Empty reply from server

Injecting an event from the container itself works as expected, although not on port = 8090 from lang.py file, but on port 5000

curl -H "content-type: application/json" -X POST -d '{"name": "mkkl", "location": "JP"}' http://0.0.0.0:5000/rules/events {"outcome": 0}root@4de969e00b66:/app#

How could I get the API to listen to http://0.0.0.0 and any other port but 5000 when deployed in a Docker container?

Thank you!

[jruizgit]

Hi, thank you for asking the question. How are you getting the app started in the docker container?

[jruizgit]

If you are starting your app following the test example, you can set the host name and the port:

from durable.lang import *
with ruleset('test'):
    @when_all(m.subject == 'World')
    def say_hello(c):
        print ('Hello {0}'.format(c.m.subject))

    @when_start
    def start(host):
        host.post('test', { 'subject': 'World' })

run_all(None, '0.0.0.0', 8090)

[mkkl]

Thanks a lot for your guidance.

The app can be deployed in AWS cloud and events can be injected throughout its API

curl -H "content-type: application/json" -X POST -d '{"name": "mkkl", "location": "JP"}' http://durable.us-west-2.elasticbeanstalk.com/rules/events {"outcome": 0}

Re earlier question "How are you getting the app started in the docker container?", by inserting the following line at the bottom of Dockerfile

CMD ["python", "rules.py"]

Best Regards

[jruizgit]

Hi, one more question, what are the contents of rules.py? Is the last statement run_all(), would you be able to change it to run_all(None, '0.0.0.0', 8090)?