/usr/lib/python2.7/dist-packages/kombu/transport/librabbitmq.py is in python-kombu 4.1.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | """`librabbitmq`_ transport.
.. _`librabbitmq`: https://pypi.python.org/librabbitmq/
"""
from __future__ import absolute_import, unicode_literals
import os
import socket
import warnings
import librabbitmq as amqp
from librabbitmq import ChannelError, ConnectionError
from kombu.five import items, values
from kombu.utils.amq_manager import get_manager
from kombu.utils.text import version_string_as_tuple
from . import base
from .base import to_rabbitmq_queue_arguments
W_VERSION = """
librabbitmq version too old to detect RabbitMQ version information
so make sure you are using librabbitmq 1.5 when using rabbitmq > 3.3
"""
DEFAULT_PORT = 5672
DEFAULT_SSL_PORT = 5671
NO_SSL_ERROR = """\
ssl not supported by librabbitmq, please use pyamqp:// or stunnel\
"""
class Message(base.Message):
"""AMQP Message (librabbitmq)."""
def __init__(self, channel, props, info, body):
super(Message, self).__init__(
channel=channel,
body=body,
delivery_info=info,
properties=props,
delivery_tag=info.get('delivery_tag'),
content_type=props.get('content_type'),
content_encoding=props.get('content_encoding'),
headers=props.get('headers'))
class Channel(amqp.Channel, base.StdChannel):
"""AMQP Channel (librabbitmq)."""
Message = Message
def prepare_message(self, body, priority=None,
content_type=None, content_encoding=None,
headers=None, properties=None):
"""Encapsulate data into a AMQP message."""
properties = properties if properties is not None else {}
properties.update({'content_type': content_type,
'content_encoding': content_encoding,
'headers': headers,
'priority': priority})
return body, properties
def prepare_queue_arguments(self, arguments, **kwargs):
arguments = to_rabbitmq_queue_arguments(arguments, **kwargs)
return {k.encode('utf8'): v for k, v in items(arguments)}
class Connection(amqp.Connection):
"""AMQP Connection (librabbitmq)."""
Channel = Channel
Message = Message
class Transport(base.Transport):
"""AMQP Transport (librabbitmq)."""
Connection = Connection
default_port = DEFAULT_PORT
default_ssl_port = DEFAULT_SSL_PORT
connection_errors = (
base.Transport.connection_errors + (
ConnectionError, socket.error, IOError, OSError)
)
channel_errors = (
base.Transport.channel_errors + (ChannelError,)
)
driver_type = 'amqp'
driver_name = 'librabbitmq'
implements = base.Transport.implements.extend(
async=True,
heartbeats=False,
)
def __init__(self, client, **kwargs):
self.client = client
self.default_port = kwargs.get('default_port') or self.default_port
self.default_ssl_port = (kwargs.get('default_ssl_port') or
self.default_ssl_port)
self.__reader = None
def driver_version(self):
return amqp.__version__
def create_channel(self, connection):
return connection.channel()
def drain_events(self, connection, **kwargs):
return connection.drain_events(**kwargs)
def establish_connection(self):
"""Establish connection to the AMQP broker."""
conninfo = self.client
for name, default_value in items(self.default_connection_params):
if not getattr(conninfo, name, None):
setattr(conninfo, name, default_value)
if conninfo.ssl:
raise NotImplementedError(NO_SSL_ERROR)
opts = dict({
'host': conninfo.host,
'userid': conninfo.userid,
'password': conninfo.password,
'virtual_host': conninfo.virtual_host,
'login_method': conninfo.login_method,
'insist': conninfo.insist,
'ssl': conninfo.ssl,
'connect_timeout': conninfo.connect_timeout,
}, **conninfo.transport_options or {})
conn = self.Connection(**opts)
conn.client = self.client
self.client.drain_events = conn.drain_events
return conn
def close_connection(self, connection):
"""Close the AMQP broker connection."""
self.client.drain_events = None
connection.close()
def _collect(self, connection):
if connection is not None:
for channel in values(connection.channels):
channel.connection = None
try:
os.close(connection.fileno())
except OSError:
pass
connection.channels.clear()
connection.callbacks.clear()
self.client.drain_events = None
self.client = None
def verify_connection(self, connection):
return connection.connected
def register_with_event_loop(self, connection, loop):
loop.add_reader(
connection.fileno(), self.on_readable, connection, loop,
)
def get_manager(self, *args, **kwargs):
return get_manager(self.client, *args, **kwargs)
def qos_semantics_matches_spec(self, connection):
try:
props = connection.server_properties
except AttributeError:
warnings.warn(UserWarning(W_VERSION))
else:
if props.get('product') == 'RabbitMQ':
return version_string_as_tuple(props['version']) < (3, 3)
return True
@property
def default_connection_params(self):
return {
'userid': 'guest',
'password': 'guest',
'port': (self.default_ssl_port if self.client.ssl
else self.default_port),
'hostname': 'localhost',
'login_method': 'AMQPLAIN',
}
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