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9.7. Create Command

The QMF create command takes five arguments:

type: The type of object to be created, this can be a queue, exchange or binding.
name: The name of the object to be created. The name argument of a queue or exchange is a single value, for example a queue named my-queue sets the name argument to a string of that value. The name of a binding uses the pattern exchange/queue/key, for example: amq.topic/my-queue/my-key identifies a binding between my-queue and the exchange amq.topic with the binding key my-key.
properties: The specific properties for the object to be created, value is a nested map.
strict: The strict argument takes a boolean value that is presently ignored. This value is intended to indicate whether the command will fail if any unrecognized properties have been specified.
auto_delete_timeout: Optional. If specified upon first declaring an auto-delete queue, specifies a delay, in seconds, after which the deletion will take place. Note: If the queue is re-declared after becoming eligible for deletion, but before the delay expires, then the queue will be not be deleted.

The following code example uses QMF to create a queue named my-queue. In this example my-queue is configured to be auto-deleted after 10 seconds.

Python

conn = Connection(opts.broker)
try:
  conn.open()
  ssn = conn.session()
  snd = ssn.sender("qmf.default.direct/broker")
  reply_to = "reply-queue; {create:always, node:{x-declare:{auto-delete:true}}}"
  rcv = ssn.receiver(reply_to)

  content = {
             "_object_id": {"_object_name": "org.apache.qpid.broker:broker:amqp-broker"},
             "_method_name": "create",
             "_arguments": {"type":"queue", "name":"my-queue", "properties":{"auto-delete":True, "qpid.auto_delete_timeout":10}}
            } 
  request = Message(reply_to=reply_to, content=content)
  request.properties["x-amqp-0-10.app-id"] = "qmf2"
  request.properties["qmf.opcode"] = "_method_request"
  snd.send(request)

  try:
    response = rcv.fetch(timeout=opts.timeout)
    if response.properties['x-amqp-0-10.app-id'] == 'qmf2':
      if response.properties['qmf.opcode'] == '_method_response':
        return response.content['_arguments']
      elif response.properties['qmf.opcode'] == '_exception':
        raise Exception("Error: %s" % response.content['_values'])
      else: raise Exception("Invalid response received, unexpected opcode: %s" % m)
    else: raise Exception("Invalid response received, not a qmfv2 method: %s" % m)
  except Empty:
    print "No response received!"
  except Exception, e:
    print e
except ReceiverError, e:
  print e
except KeyboardInterrupt:
  pass

conn.close()

conn = Connection(opts.broker)
try:
  conn.open()
  ssn = conn.session()
  snd = ssn.sender("qmf.default.direct/broker")
  reply_to = "reply-queue; {create:always, node:{x-declare:{auto-delete:true}}}"
  rcv = ssn.receiver(reply_to)

  content = {
             "_object_id": {"_object_name": "org.apache.qpid.broker:broker:amqp-broker"},
             "_method_name": "create",
             "_arguments": {"type":"queue", "name":"my-queue", "properties":{"auto-delete":True, "qpid.auto_delete_timeout":10}}
            } 
  request = Message(reply_to=reply_to, content=content)
  request.properties["x-amqp-0-10.app-id"] = "qmf2"
  request.properties["qmf.opcode"] = "_method_request"
  snd.send(request)

  try:
    response = rcv.fetch(timeout=opts.timeout)
    if response.properties['x-amqp-0-10.app-id'] == 'qmf2':
      if response.properties['qmf.opcode'] == '_method_response':
        return response.content['_arguments']
      elif response.properties['qmf.opcode'] == '_exception':
        raise Exception("Error: %s" % response.content['_values'])
      else: raise Exception("Invalid response received, unexpected opcode: %s" % m)
    else: raise Exception("Invalid response received, not a qmfv2 method: %s" % m)
  except Empty:
    print "No response received!"
  except Exception, e:
    print e
except ReceiverError, e:
  print e
except KeyboardInterrupt:
  pass

conn.close()

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9.7. Create Command

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