Channel Groups API for PubNub Python-Twisted SDK

Deprecated

NOTICE: Based on current web trends and our own usage data, PubNub's Python Twisted SDK is deprecated as of May 1, 2019. Deprecation means we will no longer be updating the Python Twisted SDK but will continue to support users currently using it. Please feel free to use our other Python SDK offerings as they will continue to be supported and maintained. If you would like to use the Python Twisted SDK specifically, we would love to work with you on keeping this project alive!

Channel groups allow PubNub developers to bundle thousands of channels into a group that can be identified by a name. These channel groups can then be subscribed to, receiving data from the many back-end channels the channel group contains.

Channel group operations

You can't publish to a channel group. You can only subscribe to it. To publish within the channel group, you need to publish to each channel individually.

Add Channels

Requires Stream Controller add-on

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

This function adds a channel to a channel group.

Method(s)

Adding Channels is accomplished by using the following method(s) in the Python-Twisted SDK:

Note

200 channels can be added to the channel group per API call.

pubnub.add_channel_to_channel_group().channels(String|List|Tuple).channel_group(String)

Parameter	Type	Required	Description
channels	String | List | Tuple	Yes	The channel to add to the channel_group.
channel_group	String	Yes	The channel_group to add the channels to.

Basic Usage

Add Channels

d = pubnub.add_channel_to_channel_group().\
    channels(["ch1", "ch2"]).\
    channel_group("cg1").\
    deferred()

d.addCallback(my_callback)

List Channels

Requires Stream Controller add-on

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

This function lists all the channels of the channel group.

Method(s)

Listing Channels is accomplished by using the following method(s) in the Python-Twisted SDK:

pubnub.list_channels_in_channel_group().channel_group(String)

Parameter	Type	Required	Description
channel_group	String	Yes	The channel group to fetch channels.

Basic Usage

List Channels

envelope = yield pubnub.list_channels_in_channel_group().\
    channel_group("cg1").future()

Remove Channels

Requires Stream Controller add-on

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

This function removes the channels from the channel group.

Method(s)

Removing Channels is accomplished by using the following method(s) in the Python-Twisted SDK:

pubnub.remove_channel_from_channel_group().channels(String|List|Tuple).channel_group(String)

Parameter	Type	Required	Description
channels	String | List | Tuple	Yes	The channels to remove from the channel group.
channel_group	String	Yes	Specifies channel_group to remove the channels from.

Basic Usage

Remove channels

# if we're using inlineCallbacks
envelope = yield pubnub.remove_channel_from_channel_group()\
    .group(channel_group)\
    .channels(["son", "daughter"])\
    .deferred()

# if we're not using inlineCallbacks
d = pubnub.remove_channel_from_channel_group()\
    .group(channel_group)\
    .channels(["son", "daughter"])\
    .deferred()

d.addCallback(my_callback)

Delete Channel Group

Requires Stream Controller add-on

This method requires that the Stream Controller add-on is enabled for your key in the Admin Portal (with Enable Wildcard Subscribe checked). Read the support page on enabling add-on features on your keys.

This function removes the channel group.

Method(s)

Deleting Channel Group is accomplished by using the following method(s) in the Python-Twisted SDK:

pubnub.remove_channel_group().channel_group(String)

Parameter	Type	Required	Description
channel_group	String	Yes	The channel group to remove.

Basic Usage

Delete Channel Group

# if we're using inlineCallbacks
envelope = yield pubnub.remove_channel_group()\
    .group(channel_group)\
    .deferred()

# if we're not using inlineCallbacks
d = pubnub.remove_channel_group()\
    .group(channel_group)\
    .deferred()

d.addCallback(my_callback)