def transmit(self, frame):
"""
Convert a frame object to a frame string and transmit to the server.
:param Frame frame: the Frame object to transmit
"""
for listener in self.listeners.values():
if not listener:
continue
try:
listener.on_send(frame)
except AttributeError:
continue
lines = utils.convert_frame_to_lines(frame)
packed_frame = pack(lines)
if log.isEnabledFor(logging.DEBUG):
log.debug("Sending frame: %s", lines)
else:
log.debug("Sending frame: %r, headers=%r", frame.cmd
or "heartbeat", frame.headers)
self.send(encode(packed_frame))
def send(self, destination, body, content_type=None, headers=None, **keyword_headers):
"""
Send a message to a destination in the messaging system (as per https://stomp.github.io/stomp-specification-1.2.html#SEND)
:param str destination: the destination (such as a message queue - for example '/queue/test' - or a message topic)
:param body: the content of the message
:param str content_type: the MIME type of message
:param dict headers: additional headers to send in the message frame
:param keyword_headers: any additional headers the broker requires
"""
assert destination is not None, "'destination' is required"
assert body is not None, "'body' is required"
headers = utils.merge_headers([headers, keyword_headers])
headers[HDR_DESTINATION] = destination
if content_type:
headers[HDR_CONTENT_TYPE] = content_type
body = encode(body)
if self.auto_content_length and body and HDR_CONTENT_LENGTH not in headers:
headers[HDR_CONTENT_LENGTH] = len(body)
self.send_frame(CMD_SEND, headers, body)
def send(self, destination, body, content_type=None, headers=None, **keyword_headers):
"""
Send a message to a destination.
:param str destination: the destination of the message (e.g. queue or topic name)
:param body: the content of the message
:param str content_type: the content type of the message
:param dict headers: a map of any additional headers the broker requires
:param keyword_headers: any additional headers the broker requires
"""
assert destination is not None, "'destination' is required"
assert body is not None, "'body' is required"
headers = utils.merge_headers([headers, keyword_headers])
headers[HDR_DESTINATION] = destination
if content_type:
headers[HDR_CONTENT_TYPE] = content_type
body = encode(body)
if self.auto_content_length and body and HDR_CONTENT_LENGTH not in headers:
headers[HDR_CONTENT_LENGTH] = len(body)
self.send_frame(CMD_SEND, headers, body)