def send_msg(self, msg_body, delay_sec=0):
"""
@param msg_body:
@return: None for send failed, otherwise return the send message id like 23F711056A4D9A94-2-151B021151D-2000013C4
"""
#ret_flag = False
send_msg_id = None
message = Message(msg_body)
message.set_delayseconds(delay_sec)
try:
send_msg = self.mns_queue.send_message(message)
logger.debug("Send Message Succeed.\nMessageBody:%s\nMessageId:%s\nMessageBodyMd5:%s\n\n" % (msg_body, send_msg.message_id, send_msg.message_body_md5))
send_msg_id = send_msg.message_id
except MNSExceptionBase, e:
logger.warn("Send Message Fail!\nException:%s\n\n" % e)
def del_msg(self, retry=3):
"""
@return:
"""
num = retry
ret_flag = False
if self.last_recv_msg is None:
logger.debug("last recv msg is None, nothing to do")
return True
while num > 0:
try:
self.mns_queue.delete_message(self.last_recv_msg.receipt_handle)
logger.debug("Delete Message Succeed.\n\n")
ret_flag = True
self.last_recv_msg = None
return ret_flag
except MNSExceptionBase, e:
logger.warn("Del Message from %s Fail!\nException:%s\n\n, retry again" % (self.mns_queue.queue_name,e))
time.sleep(1.0)
def recv_msg(self, visible_timeout=60):
"""
@return: None means recv msg failed, otherwise, return the msg_body(means the msg that you send)
"""
ret_flag = None
try:
_msg = self.mns_queue.receive_message(self.wait_seconds)
try:
change_msg_vis = self.mns_queue.change_message_visibility(_msg.receipt_handle, visible_timeout)
logger.debug("Change Message Visibility Succeed!\nReceiptHandle:%s\nNextVisibleTime:%s\n\n" %
(change_msg_vis.receipt_handle, change_msg_vis.next_visible_time))
ret_flag = _msg.message_body
self.last_recv_msg = change_msg_vis
except MNSExceptionBase, e:
logger.warn("Change Message Visibility Fail!\nException:%s\n\n" % e)
except MNSExceptionBase as e:
if e.type == 'MessageNotExist':
logger.debug("no message left in queue [%s]" %self.mns_queue.queue_name)
else:
logger.warn("Receive Message Fail!\nException:%s\n\n" % e)
return ret_flag
