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|
"""Pika specific exceptions"""
# pylint: disable=C0111,E1136
class AMQPError(Exception):
def __repr__(self):
return '%s: An unspecified AMQP error has occurred; %s' % (
self.__class__.__name__, self.args)
class AMQPConnectionError(AMQPError):
def __repr__(self):
if len(self.args) == 2:
return '{}: ({}) {}'.format(self.__class__.__name__, self.args[0],
self.args[1])
else:
return '{}: {}'.format(self.__class__.__name__, self.args)
class ConnectionOpenAborted(AMQPConnectionError):
"""Client closed connection while opening."""
class StreamLostError(AMQPConnectionError):
"""Stream (TCP) connection lost."""
class IncompatibleProtocolError(AMQPConnectionError):
def __repr__(self):
return (
'%s: The protocol returned by the server is not supported: %s' % (
self.__class__.__name__,
self.args,
))
class AuthenticationError(AMQPConnectionError):
def __repr__(self):
return ('%s: Server and client could not negotiate use of the %s '
'authentication mechanism' % (self.__class__.__name__,
self.args[0]))
class ProbableAuthenticationError(AMQPConnectionError):
def __repr__(self):
return (
'%s: Client was disconnected at a connection stage indicating a '
'probable authentication error: %s' % (
self.__class__.__name__,
self.args,
))
class ProbableAccessDeniedError(AMQPConnectionError):
def __repr__(self):
return (
'%s: Client was disconnected at a connection stage indicating a '
'probable denial of access to the specified virtual host: %s' % (
self.__class__.__name__,
self.args,
))
class NoFreeChannels(AMQPConnectionError):
def __repr__(self):
return '%s: The connection has run out of free channels' % (
self.__class__.__name__)
class ConnectionWrongStateError(AMQPConnectionError):
"""Connection is in wrong state for the requested operation."""
def __repr__(self):
if self.args:
return super(ConnectionWrongStateError, self).__repr__()
else:
return ('%s: The connection is in wrong state for the requested '
'operation.' % self.__class__.__name__)
class ConnectionClosed(AMQPConnectionError):
def __init__(self, reply_code, reply_text):
"""
:param int reply_code: reply-code that was used in user's or broker's
`Connection.Close` method. NEW in v1.0.0
:param str reply_text: reply-text that was used in user's or broker's
`Connection.Close` method. Human-readable string corresponding to
`reply_code`. NEW in v1.0.0
"""
super(ConnectionClosed, self).__init__(int(reply_code), str(reply_text))
def __repr__(self):
return '{}: ({}) {!r}'.format(self.__class__.__name__, self.reply_code,
self.reply_text)
@property
def reply_code(self):
""" NEW in v1.0.0
:rtype: int
"""
return self.args[0]
@property
def reply_text(self):
""" NEW in v1.0.0
:rtype: str
"""
return self.args[1]
class ConnectionClosedByBroker(ConnectionClosed):
"""Connection.Close from broker."""
class ConnectionClosedByClient(ConnectionClosed):
"""Connection was closed at request of Pika client."""
class ConnectionBlockedTimeout(AMQPConnectionError):
"""RabbitMQ-specific: timed out waiting for connection.unblocked."""
class AMQPHeartbeatTimeout(AMQPConnectionError):
"""Connection was dropped as result of heartbeat timeout."""
class AMQPChannelError(AMQPError):
def __repr__(self):
return '{}: {!r}'.format(self.__class__.__name__, self.args)
class ChannelWrongStateError(AMQPChannelError):
"""Channel is in wrong state for the requested operation."""
class ChannelClosed(AMQPChannelError):
"""The channel closed by client or by broker
"""
def __init__(self, reply_code, reply_text):
"""
:param int reply_code: reply-code that was used in user's or broker's
`Channel.Close` method. One of the AMQP-defined Channel Errors.
NEW in v1.0.0
:param str reply_text: reply-text that was used in user's or broker's
`Channel.Close` method. Human-readable string corresponding to
`reply_code`;
NEW in v1.0.0
"""
super(ChannelClosed, self).__init__(int(reply_code), str(reply_text))
def __repr__(self):
return '{}: ({}) {!r}'.format(self.__class__.__name__, self.reply_code,
self.reply_text)
@property
def reply_code(self):
""" NEW in v1.0.0
:rtype: int
"""
return self.args[0]
@property
def reply_text(self):
""" NEW in v1.0.0
:rtype: str
"""
return self.args[1]
class ChannelClosedByBroker(ChannelClosed):
"""`Channel.Close` from broker; may be passed as reason to channel's
on-closed callback of non-blocking connection adapters or raised by
`BlockingConnection`.
NEW in v1.0.0
"""
class ChannelClosedByClient(ChannelClosed):
"""Channel closed by client upon receipt of `Channel.CloseOk`; may be passed
as reason to channel's on-closed callback of non-blocking connection
adapters, but not raised by `BlockingConnection`.
NEW in v1.0.0
"""
class DuplicateConsumerTag(AMQPChannelError):
def __repr__(self):
return ('%s: The consumer tag specified already exists for this '
'channel: %s' % (self.__class__.__name__, self.args[0]))
class ConsumerCancelled(AMQPChannelError):
def __repr__(self):
return '%s: Server cancelled consumer' % self.__class__.__name__
class UnroutableError(AMQPChannelError):
"""Exception containing one or more unroutable messages returned by broker
via Basic.Return.
Used by BlockingChannel.
In publisher-acknowledgements mode, this is raised upon receipt of Basic.Ack
from broker; in the event of Basic.Nack from broker, `NackError` is raised
instead
"""
def __init__(self, messages):
"""
:param sequence(blocking_connection.ReturnedMessage) messages: Sequence
of returned unroutable messages
"""
super(UnroutableError, self).__init__(
"%s unroutable message(s) returned" % (len(messages)))
self.messages = messages
def __repr__(self):
return '%s: %i unroutable messages returned by broker' % (
self.__class__.__name__, len(self.messages))
class NackError(AMQPChannelError):
"""This exception is raised when a message published in
publisher-acknowledgements mode is Nack'ed by the broker.
Used by BlockingChannel.
"""
def __init__(self, messages):
"""
:param sequence(blocking_connection.ReturnedMessage) messages: Sequence
of returned unroutable messages
"""
super(NackError,
self).__init__("%s message(s) NACKed" % (len(messages)))
self.messages = messages
def __repr__(self):
return '%s: %i unroutable messages returned by broker' % (
self.__class__.__name__, len(self.messages))
class InvalidChannelNumber(AMQPError):
def __repr__(self):
return '%s: An invalid channel number has been specified: %s' % (
self.__class__.__name__, self.args[0])
class ProtocolSyntaxError(AMQPError):
def __repr__(self):
return '%s: An unspecified protocol syntax error occurred' % (
self.__class__.__name__)
class UnexpectedFrameError(ProtocolSyntaxError):
def __repr__(self):
return '%s: Received a frame out of sequence: %r' % (
self.__class__.__name__, self.args[0])
class ProtocolVersionMismatch(ProtocolSyntaxError):
def __repr__(self):
return '%s: Protocol versions did not match: %r vs %r' % (
self.__class__.__name__, self.args[0], self.args[1])
class BodyTooLongError(ProtocolSyntaxError):
def __repr__(self):
return ('%s: Received too many bytes for a message delivery: '
'Received %i, expected %i' % (self.__class__.__name__,
self.args[0], self.args[1]))
class InvalidFrameError(ProtocolSyntaxError):
def __repr__(self):
return '%s: Invalid frame received: %r' % (self.__class__.__name__,
self.args[0])
class InvalidFieldTypeException(ProtocolSyntaxError):
def __repr__(self):
return '%s: Unsupported field kind %s' % (self.__class__.__name__,
self.args[0])
class UnsupportedAMQPFieldException(ProtocolSyntaxError):
def __repr__(self):
return '%s: Unsupported field kind %s' % (self.__class__.__name__,
type(self.args[1]))
class MethodNotImplemented(AMQPError):
pass
class ChannelError(Exception):
def __repr__(self):
return '%s: An unspecified error occurred with the Channel' % (
self.__class__.__name__)
class ReentrancyError(Exception):
"""The requested operation would result in unsupported recursion or
reentrancy.
Used by BlockingConnection/BlockingChannel
"""
class ShortStringTooLong(AMQPError):
def __repr__(self):
return ('%s: AMQP Short String can contain up to 255 bytes: '
'%.300s' % (self.__class__.__name__, self.args[0]))
class DuplicateGetOkCallback(ChannelError):
def __repr__(self):
return ('%s: basic_get can only be called again after the callback for '
'the previous basic_get is executed' % self.__class__.__name__)
|
