Message Actions API for PubNub Python SDK

Add or remove actions on published messages to build features like receipts, reactions, or to associate custom metadata to messages. Clients can subscribe to a channel to receive message action events on that channel. They can also fetch past message actions from Message Persistence independently or when they fetch original messages.

Add Message Action

Requires Message Persistence add-on

This method requires that the Message Persistence add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.

Description

Add an action on a published message. Returns the added action in the response.

Method(s)

To Add a Message Action you can use the following method(s) in the Python SDK:

pubnub.add_message_action()
  .channel(String channel)
  .message_action(PNMessageAction message_action)
  .pn_async(Function message_action_callback)

Parameter	Type	Required	Description
channel	String	Yes	The channel name to which to add the message action
message_action	PNMessageAction	Yes	Message action information
message_action.type	String	Yes	What feature this message action represents
message_action.value	String	Yes	Value to be stored along with the message action
message_action.message_timetoken	Integer	Yes	Timetoken of the message to which to add the action
message_action_callback	Function	Yes	Handles returned data for successful and unsuccessful add message action operations. Details on the callback are here

Basic Usage

from pubnub.models.consumer.message_actions import PNMessageAction

msg_action = PNMessageAction()
msg_action.type = "reaction"
msg_action.value = "smiley_face"
msg_action.message_timetoken = str(int(time.time()))

pubnub.add_message_action()\
  .channel("chats.room1")\
  .message_action(msg_action)\
  .pn_async(message_action_callback)

Returns

# Example of status
{
  'affected_channels': None,
  'affected_channels_groups': None,
  'affected_groups': None,
  'auth_key': None,
  'category': 2,
  'client_response': None,
  'error': None,
  'error_data': None,
  'operation': 42,
  'origin': 'ps.pndsn.com',
  'status_code': 200,
  'tls_enabled': True,
  'uuid': 'my_uuid'

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Remove Message Action

Requires Message Persistence add-on

This method requires that the Message Persistence add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.

Description

Remove a previously added action on a published message. Returns an empty response.

Method(s)

To Remove a Message Action you can use the following method(s) in the JavaScript SDK:

pubnub.remove_message_action()
  .channel(String channel)
  .action_timetoken(Integer action_timetoken)
  .message_timetoken(Integer message_timetoken)
  .pn_async(message_action_callback)

Parameter	Type	Required	Description
channel	String	Yes	The channel name from which to remove the message action
action_timetoken	Integer	Yes	Timetoken of the message action to be removed
message_timetoken	Integer	Yes	Timetoken of the message from which to remove the action
message_action_callback	Function	Yes	Handles returned data for successful and unsuccessful remove message action operations. Details on the callback are here

Basic Usage

pubnub.remove_message_action()\
  .channel("chats.room1")\
  .action_timetoken(15956346328442840)\
  .message_timetoken(1595634632)\
  .pn_async(message_action_callback)

Returns

# Example of status
{
  'affected_channels': None,
  'affected_channels_groups': None,
  'affected_groups': None,
  'auth_key': None,
  'category': 2,
  'client_response': None,
  'error': None,
  'error_data': None,
  'operation': 44,
  'origin': 'ps.pndsn.com',
  'status_code': 200,
  'tls_enabled': True,
  'uuid': 'my_uuid'

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Get Message Actions

Requires Message Persistence add-on

This method requires that the Message Persistence add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.

Description

Get a list of message actions in a channel. Returns a list of actions sorted by the action's timetoken in ascending order.

Method(s)

To Get Message Actions you can use the following method(s) in the Python SDK:

pubnub.get_message_actions()
  .channel(String channel)
  .start(String start)
  .end(String end)
  .limit(Integer limit)
  .pn_async(message_action_callback)

Parameter	Type	Required	Description
channel	String	Yes	The channel name for which to retrieve the list of message actions
start	String	No	Message action timetoken denoting the start of the range requested. Return values will be less than start. If not specified, defaults to the current time.
end	String	No	Message action timetoken denoting the end of the range requested. Return values will be greater than or equal to end. If start is specified, end must be less than or equal to start.
limit	Integer	No	Maximum number of message actions to return in the response. If the number of results exceeds this limit, the results will include a more token. Refer to the REST API documentation for details.
message_action_callback	Function	Yes	Handles returned data for successful and unsuccessful retrieve message action operations. Details on the callback are here

Basic Usage

# Retrieve all reactions on a single message

pubnub.get_message_actions()\
  .channel("chats.room1")\
  .start("15956342921084731")\
  .end("15956342921084730")\
  .limit(50)\
  .pn_async(message_action_callback)

Returns

# Example of status
{
  'affected_channels': None,
  'affected_channels_groups': None,
  'affected_groups': None,
  'auth_key': None,
  'category': 2,
  'client_response': None,
  'error': None,
  'error_data': None,
  'operation': 43,
  'origin': 'ps.pndsn.com',
  'status_code': 200,
  'tls_enabled': True,
  'uuid': 'my_uuid'

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PNMessageAction Callback

Description

The structure of a PNMessageAction is as follows:

action = PNMessageAction({
        'uuid': 'user1',
        'type': 'reaction',
        'value': 'smiley_face',
        'actionTimetoken': '15901706735798836',
        'messageTimetoken': '15901706735795200',
    })

The following is a sample message_action_callback method you can use as a starting point for your own implementation:

def message_action_callback(envelope, status):
    if status.is_error():
        print("Uh oh. We had a problem sending the message. :( \n %s" % status)
    else:
        if isinstance(envelope, PNAddMessageActionResult):
            print("Message Action type: %s" % envelope.type)
            print("Message Action value: %s" % envelope.value)
            print("Message Action timetoken: %s" % envelope.message_timetoken)
            print("Message Action uuid: %s" % envelope.uuid)
            print("Message Action timetoken: %s" % envelope.action_timetoken)
        elif isinstance(envelope, PNRemoveMessageActionResult):
            # Envelope here is an empty dictionary {}
            pass
        elif isinstance(envelope, PNGetMessageActionsResult):
            print("Message Actions Result:\n")

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