Slack Extensions for Nameko

Nameko extension for interaction with Slack APIs. Uses Slack Developer Kit for Python.

Real Time Messaging Client

The RTM extension is a Websocket client for Slack's Real Time Messaging API that allows you to receive events from Slack in real time. The rtm module contains two Nameko entrypoints for handling such events - handle_event and handle_message.

Usage

Provide Slack bot API token in your Nameko service config file:

# config.yml

SLACK:
    TOKEN: "xoxb-abc-1232"

Or using environment variable within your config:

# config.yml

SLACK:
    TOKEN: ${SLACK_BOT_TOKEN}

Define your service with an entrypoint which will listen for and fire on any event coming from Slack:

# service.py

from nameko_slack import rtm

class Service:

    name = 'some-service'

    @rtm.handle_event
    def on_any_event(self, event):
        print(event)

Finally, run the service:

$ SLACK_BOT_TOKEN=xoxb-abc-1232 nameko run --config ./config.yaml service
starting services: some-service
{'type': 'hello'}
{'type': 'presence_change', 'user': 'ABCDE1234', 'presence': 'active'}
{'type': 'user_typing', 'user': 'ABCDE1234', 'channel': 'ABCDE1234'}
{'type': 'message', 'text': 'spam', 'channel': 'ABCDE1234', 'user': 'ABC...
{'type': 'presence_change', 'user': 'ABCDE1234', 'presence': 'active'}
...

More Examples

Listen for events of a particular type:

from nameko_slack import rtm

class Service:

    name = 'some-service'

    @rtm.handle_event('presence_change')
    def on_presence_change(self, event):
        pass

Listen for any message type event:

from nameko_slack import rtm

class Service:

    name = 'some-service'

    @rtm.handle_message
    def on_any_message(self, event, message):
        pass

Use regular expressions to fire on matching messages only:

from nameko_slack import rtm

class Service:

    name = 'some-service'

    @rtm.handle_message('^spam')
    def on_message_starting_with(self, event, message):
        pass

Parse message and pass matching groups as positional or named arguments to the entrypoint:

from nameko_slack import rtm

class Service:

    name = 'some-service'

    @rtm.handle_message('^spam (\w*)')
    def on_spam(self, event, message, egg):
        pass

    @rtm.handle_message('^egg (?P<ham>\w+)')
    def on_egg(self, event, message, ham=None):
        pass

Respond back to the channel by returning a string in the message handling entrypoint:

from nameko_slack import rtm

class Service:

    name = 'some-service'

    @rtm.handle_message
    def sure(self, event, message):
        return 'sure, {}'.format(message)

Run multiple RTM bots:

# config.yml

SLACK:
    BOTS:
        alice: ${ALICE_BOT_TOKEN}
        bob: ${BOB_BOT_TOKEN}

# service.py

from nameko_slack import rtm

class Service:

    name = 'some-service'

    @rtm.handle_message(bot_name='alice')
    def listen_as_alice(self, event, message):
        pass

    @rtm.handle_message(bot_name='bob')
    def listen_as_bob(self, event, message):
        pass

$ ALICE_BOT_TOKEN=xoxb-aaa-111 BOB_BOT_TOKEN=xoxb-bbb-222 nameko run --config ./config.yaml service
starting services: some-service

WEB API Client

A simple dependency provider wrapping Slack WEB API client.

Usage

The dependency provider uses the same config key as the RTM extension:

# config.yml

AMQP_URI: 'pyamqp://guest:guest@localhost'
SLACK:
    TOKEN: ${SLACK_BOT_TOKEN}

# service.py

from nameko.rpc import rpc
from nameko_slack import web


class Service:

    name = 'some-service'

    slack = web.Slack()

    @rpc
    def say_hello(self, name):
        self.slack.api_call(
            'chat.postMessage',
            channel="#nameko",
            text="Hello from Nameko! :tada:")

You can also use multiple bots:

# config.yml

AMQP_URI: 'pyamqp://guest:guest@localhost'
SLACK:
    BOTS:
        alice: ${ALICE_BOT_TOKEN}
        bob: ${BOB_BOT_TOKEN}

# service.py

from nameko.rpc import rpc
from nameko_slack import web


class Service:

    name = 'some-service'

    alice = web.Slack('alice')
    bob = web.Slack('bob')

    @rpc
    def say_hello(self):
        self.alice.api_call(
            'chat.postMessage',
            channel="#nameko",
            text="Hello from Alice! :tada:")
        self.bob.api_call(
            'chat.postMessage',
            channel="#nameko",
            text="Hello from Bob! :tada:")