Message Reactions API for PubNub Python-Asyncio 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 reaction events on that channel. They can also fetch past message reactions from Message Persistence independently or when they fetch original messages.

Terminology

All message reactions in code are collectively called message reactions in the docs and the term applies both to reacting to a message (through emojis) and acting on a message (by deleting it).

Add Message Reaction

Requires Message Persistence

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

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

Method(s)

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

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

Parameter	Type	Required	Description
channel	String	Yes	The channel name to which to add the message reaction
message_action	PNMessageAction	Yes	Message reaction information
message_action.type	String	Yes	What feature this message reaction represents
message_action.value	String	Yes	Value to be stored along with the message reaction
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 reaction operations. Details on the callback are here

Basic Usage

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'

show all 25 lines

Remove Message Reaction

Requires Message Persistence

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

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

Method(s)

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

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

Parameter	Type	Required	Description
channel	String	Yes	The channel name from which to remove the message reaction
action_timetoken	Integer	Yes	Timetoken of the message reaction 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 reaction 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'

show all 19 lines

Get Message Reactions

Requires Message Persistence

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

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

Method(s)

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

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

Parameter	Type	Required	Description
channel	String	Yes	The channel name for which to retrieve the list of message reactions
start	String	No	Message reaction 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 reaction 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 reactions 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 reaction 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'

show all 29 lines

PNMessageAction Callback

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 Reaction type: %s" % envelope.type)
            print("Message Reaction value: %s" % envelope.value)
            print("Message Reaction timetoken: %s" % envelope.message_timetoken)
            print("Message Reaction uuid: %s" % envelope.uuid)
            print("Message Reaction timetoken: %s" % envelope.action_timetoken)
        elif isinstance(envelope, PNRemoveMessageActionResult):
            # Envelope here is an empty dictionary {}
            pass
        elif isinstance(envelope, PNGetMessageActionsResult):
            print("Message Reactions Result:\n")

show all 22 lines