This is the vxmessenger project.
Project description
Vumi Messenger Transport
All of Vumi’s applications can be surfaced on Messenger with the Messenger Transport. It provides a great experience for interactive mobile conversations at scale.
Getting Started
Install Junebug, the standalone Vumi transport launcher and the Facebook Messenger Transport:
$ apt-get install redis-server rabbitmq-server $ pip install junebug $ pip install vxmessenger
Launch the Junebug service with thet Vumi Messenger channel configured:
$ jb -p 8000 \
--channels facebook:vxmessenger.transport.MessengerTransport \
--logging-path .
Using the template, below and update your FB_PAGE_ID, FB_ACCESS_TOKEN and save it as a file called config.json:
{
"type": "facebook",
"amqp_queue": "messenger_transport",
"public_http": {
"enabled": true,
"web_path": "/api",
"web_port": 8051
},
"config": {
"web_path": "/api",
"web_port": 8051,
"noisy": true,
"page_id": "YOUR_FB_PAGE_ID",
"retrieve_profile": false,
"outbound_url": "https://graph.facebook.com/v2.6/me/messages",
"access_token": "YOUR_FB_ACCESS_TOKEN"
}
}Post it to Junebug to start the channel:
$ curl -X POST -d@config.json http://localhost:8000/channels/
You’re now able to communicate with Facebook’s Messenger API and can offer bot access to your Vumi application.
Facebook will want to verify your application, for that to work make sure it’s served over SSL. The API URL is:
http://localhost:8051/api
If you’ve used a different web_port and web_path parameter you’ll need to update the URL accordingly.
Hook up an Application to your Messenger integration
All Vumi applications can be surfaced on Facebook Messenger as bots, how about hooking up a simple game of hangman?:
$ twistd -n vumi_worker \
--worker-class=vumi.demos.hangman.HangmanWorker \
--set-option=random_word_url:http://randomword.setgetgo.com/get.php \
--set-option=transport_name:messenger_transport \
--set-option=worker_name:hangman
Javascript Sandbox applications are also available. Check out some of the examples below:
- Sample FAQ browser
- Sample Service rating application
Richer Templates
The Vumi Messenger Transport allows one to use the richer templates available, including texts, images, hyperlinks and buttons.
To make use of these add the relevant helper_metadata to your outbound Vumi message:
A Generic Reply
Please be aware of the limitations that Facebook applies to these messages. A call to action may only have a maximum of 3 buttons, 10 elements, and character count limits appy.
self.publish_message(
helper_metadata={
'messenger': {
'template_type': 'generic'
'elements': [{ # Up to 10 elements
'title': 'The title',
'subtitle': 'The subtitle', # This can be left blank
'image_url': 'The image_url to use', # This can be left blank
'buttons': [{ # Up to 3 buttons
'type': 'postback', # defaults to postback if not specified
'title': 'Button 1',
'payload': {
# In here you can put whatever you want to
# 'content' and 'in_reply_to' will go into the standard vumi message
'content': 'The content expected when a button is pressed', # This can be left blank
'in_reply_to': 'The ID of the previous message', # This can be left blank
# Anything else will end up in transport_metadata.messenger and helper_metadata.messenger
'anything_extra': 'Bonus!'
}
}, {
'type': 'web_url',
'title': 'Button 2',
'url': 'http://some.url'
}, {
'type': 'phone_number',
'title': 'Button 3',
'url': '+271234567'
}]
}]
}
})Message format
Due to some extra features of the messenger platform, there is some extra data that you may need to pay attention to:
transport_metadata:
Contains a dict messenger with the following keys:
- mid:
Messenger message id.
- attachments:
List containing dictionaries as such:
{ "type":"image", "payload": { "url":"IMAGE_URL" } }- optin:
Dict containing a ref key, which is the PASS_THROUGH_PARAM as defined by:
https://developers.facebook.com/docs/messenger-platform/plugin-reference#send_to_messenger
- Other items defined in payload:
e.g. "anything_extra": "Bonus"
helper_metadata:
Contains a dict messenger with the same data as transport_metadata and the user profile as such:
Note: only if retrieve_profile is configured as true
{
"first_name": "Firstname",
"last_name": "Lastname",
"profile_pic": "IMAGE_URL"
}Supported webhooks
- messages:
Standard conversational messages & attachments.
- messaging_postbacks:
Postback buttons.
- messaging_optins:
Send-to-Messenger / authentication callback.
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