def test_close_failed(self):
url = 'test-url'
c = Connection(url)
impl = Mock()
impl.close.side_effect = ValueError
c._impl = impl
c.close()
def test_close_failed(self):
url = 'test-url'
c = Connection(url)
impl = Mock()
impl.close.side_effect = ValueError
c._impl = impl
c.close()
def test_close(self):
url = 'test-url'
c = Connection(url)
impl = Mock()
c._impl = impl
c.close()
impl.close.assert_called_once_with()
self.assertEqual(c._impl, None)
def test_close(self):
url = 'test-url'
c = Connection(url)
impl = Mock()
c._impl = impl
c.close()
impl.close.assert_called_once_with()
self.assertEqual(c._impl, None)
class Reader(BaseReader):
"""
An AMQP message reader.
:ivar connection: A proton connection
:type connection: Connection
:ivar receiver: An AMQP receiver to read.
:type receiver: proton.utils.BlockingReceiver
"""
def __init__(self, node, url):
"""
:param node: The AMQP node to read.
:type node: gofer.messaging.adapter.model.Node
:param url: The broker url.
:type url: str
:see: gofer.messaging.adapter.url.URL
"""
BaseReader.__init__(self, node, url)
self.connection = Connection(url)
self.receiver = None
def is_open(self):
"""
Get whether the messenger has been opened.
:return: True if open.
:rtype bool
"""
return self.receiver is not None
@reliable
def open(self):
"""
Open the reader.
"""
if self.is_open():
# already open
return
self.connection.open()
self.receiver = self.connection.receiver(self.node.address)
def repair(self):
"""
Repair the reader.
"""
self.close()
self.connection.close()
self.connection.open()
self.receiver = self.connection.receiver(self.node.address)
def close(self):
"""
Close the reader.
:raise: NotFound
"""
receiver = self.receiver
self.receiver = None
try:
receiver.close()
except Exception:
pass
@reliable
def get(self, timeout=None):
"""
Get the next message from the queue.
:param timeout: The read timeout in seconds.
:type timeout: int
:return: The next message or None.
:rtype: Message
"""
try:
impl = self.receiver.receive(timeout or NO_DELAY)
return Message(self, impl, impl.body)
except Timeout:
pass
@reliable
def ack(self, message):
"""
Acknowledge all messages received on the session.
:param message: The message to acknowledge.
:type message: proton.Message
"""
self.receiver.accept()
@reliable
def reject(self, message, requeue=True):
"""
Reject the specified message.
:param message: The message to reject.
:type message: proton.Message
:param requeue: Requeue the message or discard it.
:type requeue: bool
"""
if requeue:
self.receiver.release()
else:
self.receiver.reject()
class Sender(BaseSender):
"""
An AMQP message sender.
:ivar connection: A proton connection.
:type connection: Connection
"""
def __init__(self, url):
"""
:param url: The broker url.
:type url: str
"""
BaseSender.__init__(self, url)
self.connection = Connection(url)
def is_open(self):
"""
Get whether the messenger has been opened.
:return: True if open.
:rtype bool
"""
return self.connection.is_open()
@reliable
def open(self):
"""
Open the sender.
"""
if self.is_open():
# already opened
return
self.connection.open()
def repair(self):
"""
Repair the sender.
"""
self.close()
self.connection.close()
self.connection.open()
def close(self):
"""
Close the sender.
"""
pass
@resend
def send(self, address, content, ttl=None):
"""
Send a message.
:param address: An AMQP address.
:type address: str
:param content: The message content
:type content: buf
:param ttl: Time to Live (seconds)
:type ttl: float
"""
sender = self.connection.sender(address)
try:
message = build_message(content, ttl, self.durable)
sender.send(message)
log.debug('sent (%s)', address)
finally:
sender.close()
class Reader(BaseReader):
"""
An AMQP message reader.
:ivar connection: A proton connection
:type connection: Connection
:ivar receiver: An AMQP receiver to read.
:type receiver: proton.utils.BlockingReceiver
"""
def __init__(self, node, url):
"""
:param node: The AMQP node to read.
:type node: gofer.messaging.adapter.model.Node
:param url: The broker url.
:type url: str
:see: gofer.messaging.adapter.url.URL
"""
BaseReader.__init__(self, node, url)
self.connection = Connection(url)
self.receiver = None
def is_open(self):
"""
Get whether the messenger has been opened.
:return: True if open.
:rtype bool
"""
return self.receiver is not None
@reliable
def open(self):
"""
Open the reader.
"""
if self.is_open():
# already open
return
self.connection.open()
self.receiver = self.connection.receiver(self.node.address)
def repair(self):
"""
Repair the reader.
"""
self.close()
self.connection.close()
self.connection.open()
self.receiver = self.connection.receiver(self.node.address)
def close(self):
"""
Close the reader.
:raise: NotFound
"""
receiver = self.receiver
self.receiver = None
try:
receiver.close()
except Exception:
pass
@reliable
def get(self, timeout=None):
"""
Get the next message from the queue.
:param timeout: The read timeout in seconds.
:type timeout: int
:return: The next message or None.
:rtype: Message
"""
try:
impl = self.receiver.receive(timeout or NO_DELAY)
return Message(self, impl, impl.body)
except Timeout:
pass
@reliable
def ack(self, message):
"""
Acknowledge all messages received on the session.
:param message: The message to acknowledge.
:type message: proton.Message
"""
self.receiver.accept()
@reliable
def reject(self, message, requeue=True):
"""
Reject the specified message.
:param message: The message to reject.
:type message: proton.Message
:param requeue: Requeue the message or discard it.
:type requeue: bool
"""
if requeue:
self.receiver.release()
else:
self.receiver.reject()
class Method(Messenger):
"""
QMF method.
:ivar url: The broker url.
:type url: str
:ivar name: The method name.
:type name: str
:ivar arguments: The method arguments.
:type arguments: dict
:ivar connection: A broker connection.
:type connection: Connection
:ivar sender: A message sender.
:type sender: proton.utils.BlockingSender
:ivar receiver: A message sender.
:type receiver: proton.utils.BlockingReceiver
"""
def __init__(self, url, name, arguments):
"""
:param url: The broker url.
:type url: str
:param name: The method name.
:type name: str
:param arguments: The method arguments.
:type arguments: dict
"""
super(Method, self).__init__(url)
self.name = name
self.arguments = arguments
self.connection = Connection(url)
self.sender = None
self.receiver = None
@property
def body(self):
return {
'_object_id': OBJECT_ID,
'_method_name': self.name,
'_arguments': self.arguments
}
@property
def properties(self):
return {
'qmf.opcode': '_method_request',
'x-amqp-0-10.app-id': 'qmf2',
'method': 'request'
}
@resend
def send(self, request):
"""
Send the request.
:param request: A QMF request.
"""
self.sender.send(request)
def on_reply(self, reply):
"""
Process the QMF reply.
:param reply: The reply.
:type reply: Message
:raise: Error on failures.
"""
body = dict(reply.body)
opcode = reply.properties['qmf.opcode']
if opcode != '_exception':
# succeeded
return
values = body['_values']
code = values['error_code']
description = values['error_text']
if code == EEXIST:
return
raise Error(description, code)
def is_open(self):
"""
Get whether the method is open.
:return: True if open.
:rtype: bool
"""
return self.sender is not None
def open(self):
"""
Open a connection and get a sender and receiver.
"""
if self.is_open():
# already open
return
self.connection.open()
self.receiver = self.connection.receiver(ADDRESS, dynamic=True)
self.sender = self.connection.sender(ADDRESS)
def repair(self):
"""
Repair the connection and get a sender and receiver.
"""
self.close()
self.connection.close()
self.connection.open()
self.receiver = self.connection.receiver(ADDRESS, dynamic=True)
self.sender = self.connection.sender(ADDRESS)
def close(self):
"""
Close the sender and receiver.
"""
sender = self.sender
self.sender = None
receiver = self.receiver
self.receiver = None
try:
sender.close()
except Exception:
pass
try:
receiver.close()
except Exception:
pass
@reliable
def __call__(self):
"""
Invoke the method.
:raise: Error on failure.
"""
self.open()
try:
reply_to = self.receiver.remote_source.address
request = Message(body=self.body,
reply_to=reply_to,
properties=self.properties,
correlation_id=utf8(uuid4()),
subject=SUBJECT)
self.send(request)
reply = self.receiver.receive()
self.on_reply(reply)
finally:
self.close()
class Method(Messenger):
"""
QMF method.
:ivar url: The broker url.
:type url: str
:ivar name: The method name.
:type name: str
:ivar arguments: The method arguments.
:type arguments: dict
:ivar connection: A broker connection.
:type connection: Connection
:ivar sender: A message sender.
:type sender: proton.utils.BlockingSender
:ivar receiver: A message sender.
:type receiver: proton.utils.BlockingReceiver
"""
def __init__(self, url, name, arguments):
"""
:param url: The broker url.
:type url: str
:param name: The method name.
:type name: str
:param arguments: The method arguments.
:type arguments: dict
"""
super(Method, self).__init__(url)
self.name = name
self.arguments = arguments
self.connection = Connection(url)
self.sender = None
self.receiver = None
@property
def body(self):
return {
'_object_id': OBJECT_ID,
'_method_name': self.name,
'_arguments': self.arguments
}
@property
def properties(self):
return {
'qmf.opcode': '_method_request',
'x-amqp-0-10.app-id': 'qmf2',
'method': 'request'
}
@resend
def send(self, request):
"""
Send the request.
:param request: A QMF request.
"""
self.sender.send(request)
def on_reply(self, reply):
"""
Process the QMF reply.
:param reply: The reply.
:type reply: Message
:raise: Error on failures.
"""
body = dict(reply.body)
opcode = reply.properties['qmf.opcode']
if opcode != '_exception':
# succeeded
return
values = body['_values']
code = values['error_code']
description = values['error_text']
if code == EEXIST:
return
raise Error(description, code)
def is_open(self):
"""
Get whether the method is open.
:return: True if open.
:rtype: bool
"""
return self.sender is not None
def open(self):
"""
Open a connection and get a sender and receiver.
"""
if self.is_open():
# already open
return
self.connection.open()
self.receiver = self.connection.receiver(ADDRESS, dynamic=True)
self.sender = self.connection.sender(ADDRESS)
def repair(self):
"""
Repair the connection and get a sender and receiver.
"""
self.close()
self.connection.close()
self.connection.open()
self.receiver = self.connection.receiver(ADDRESS, dynamic=True)
self.sender = self.connection.sender(ADDRESS)
def close(self):
"""
Close the sender and receiver.
"""
sender = self.sender
self.sender = None
receiver = self.receiver
self.receiver = None
try:
sender.close()
except Exception:
pass
try:
receiver.close()
except Exception:
pass
@reliable
def __call__(self):
"""
Invoke the method.
:raise: Error on failure.
"""
self.open()
try:
reply_to = self.receiver.remote_source.address
request = Message(
body=self.body,
reply_to=reply_to,
properties=self.properties,
correlation_id=utf8(uuid4()),
subject=SUBJECT)
self.send(request)
reply = self.receiver.receive()
self.on_reply(reply)
finally:
self.close()
class Sender(BaseSender):
"""
An AMQP message sender.
:ivar connection: A proton connection.
:type connection: Connection
"""
def __init__(self, url):
"""
:param url: The broker url.
:type url: str
"""
BaseSender.__init__(self, url)
self.connection = Connection(url)
def is_open(self):
"""
Get whether the messenger has been opened.
:return: True if open.
:rtype bool
"""
return self.connection.is_open()
@reliable
def open(self):
"""
Open the sender.
"""
if self.is_open():
# already opened
return
self.connection.open()
def repair(self):
"""
Repair the sender.
"""
self.close()
self.connection.close()
self.connection.open()
def close(self):
"""
Close the sender.
"""
pass
@resend
def send(self, address, content, ttl=None):
"""
Send a message.
:param address: An AMQP address.
:type address: str
:param content: The message content
:type content: buf
:param ttl: Time to Live (seconds)
:type ttl: float
"""
sender = self.connection.sender(address)
try:
message = build_message(content, ttl, self.durable)
sender.send(message)
log.debug('sent (%s)', address)
finally:
sender.close()