Public Member Functions
def	__init__
def	has_clients
def	publish
def	register_client
def	unregister
def	unregister_client
def	verify_type
Public Attributes
	clients
	latched_client_id
	listener
	msg_class
	publisher
	topic

Detailed Description

Keeps track of the clients that are using a particular publisher.

Provides an API to publish messages and register clients that are using
this publisher

Definition at line 120 of file publishers.py.

Constructor & Destructor Documentation

def rosbridge_library.internal.publishers.MultiPublisher.__init__	(	self,
		topic,
		msg_type = `None`,
		latched_client_id = `None`,
		queue_size = `100`
	)

Register a publisher on the specified topic.

Keyword arguments:
topic    -- the name of the topic to register the publisher to
msg_type -- (optional) the type to register the publisher as.  If not
provided, an attempt will be made to infer the topic type
latch    -- (optional) if a client requested this publisher to be latched,
    provide the client_id of that client here

Throws:
TopicNotEstablishedException -- if no msg_type was specified by the
caller and the topic is not yet established, so a topic type cannot
be inferred
TypeConflictException        -- if the msg_type was specified by the
caller and the topic is established, and the established type is
different to the user-specified msg_type

Definition at line 126 of file publishers.py.

Member Function Documentation

def rosbridge_library.internal.publishers.MultiPublisher.has_clients ( self )

Return true if there are clients to this publisher.

Definition at line 241 of file publishers.py.

def rosbridge_library.internal.publishers.MultiPublisher.publish	(	self,
		msg
	)

Publish a message using this publisher.

Keyword arguments:
msg -- the dict (json) message to publish

Throws:
Exception -- propagates exceptions from message conversion if the
provided msg does not properly conform to the message type of this
publisher

Definition at line 194 of file publishers.py.

def rosbridge_library.internal.publishers.MultiPublisher.register_client	(	self,
		client_id
	)

Register the specified client as a client of this publisher.

Keyword arguments:
client_id -- the ID of the client using the publisher

Definition at line 219 of file publishers.py.

def rosbridge_library.internal.publishers.MultiPublisher.unregister ( self )

Unregisters the publisher and clears the clients

Definition at line 172 of file publishers.py.

def rosbridge_library.internal.publishers.MultiPublisher.unregister_client	(	self,
		client_id
	)

Unregister the specified client from this publisher.

If the specified client_id is not a client of this publisher, nothing
happens.

Keyword arguments:
client_id -- the ID of the client to remove

Definition at line 228 of file publishers.py.

def rosbridge_library.internal.publishers.MultiPublisher.verify_type	(	self,
		msg_type
	)

Verify that the publisher publishes messages of the specified type.

Keyword arguments:
msg_type -- the type to check this publisher against

Throws:
Exception -- if ros_loader cannot load the specified msg type
TypeConflictException -- if the msg_type is different than the type of
this publisher

Definition at line 177 of file publishers.py.