def setup(self):
current_date = datetime.now()
self.event_index_name = current_date.strftime("events-%Y%m%d")
self.previous_event_index_name = (current_date - timedelta(days=1)).strftime("events-%Y%m%d")
self.alert_index_name = current_date.strftime("alerts-%Y%m")
self.parse_config()
# Elasticsearch
self.es_client = ElasticsearchClient(list('{0}'.format(s) for s in self.options.esservers))
# RabbitMQ
mqConnString = 'amqp://{0}:{1}@{2}:{3}//'.format(self.options.mquser,
self.options.mqpassword,
self.options.mqalertserver,
self.options.mqport)
mqAlertConn = Connection(mqConnString)
alertExchange = Exchange(name=self.options.alertExchange, type='topic', durable=True, delivery_mode=1)
alertExchange(mqAlertConn).declare()
alertQueue = Queue(self.options.queueName,
exchange=alertExchange,
routing_key=self.options.alerttopic,
durable=False,
no_ack=(not self.options.mqack))
alertQueue(mqAlertConn).declare()
self.rabbitmq_alerts_consumer = mqAlertConn.Consumer(alertQueue, accept=['json'])
if pytest.config.option.delete_indexes:
self.reset_elasticsearch()
self.setup_elasticsearch()
if pytest.config.option.delete_queues:
self.reset_rabbitmq()
class Subscriber(ConsumerProducerMixin):
"""
Consumes messages from messaging server.
"""
def __init__(self, rabbitmq_url: str, rabbitmq_queue: str):
"""
Initializes connection to messaging server.
:param rabbitmq_url: RabbitMQ URL
:param rabbitmq_queue: RabbitMQ queue name
"""
self.connection = Connection(rabbitmq_url, connect_timeout=10)
self.queue = Queue(name=rabbitmq_queue, routing_key=rabbitmq_queue)
self.consumer = self.connection.Consumer(queues=self.queue)
self.dashboard = SocketIO(message_queue=rabbitmq_url)
def get_consumers(self, consumer, channel):
"""
Accepts incoming messages from RabbitMQ server.
"""
return [consumer(self.queue, callbacks=[self.analyze])]
@abstractmethod
def analyze(self, body: Dict, message: Message):
"""
Analyzes a message. To be implemented by consumer.
"""
pass
class KombuConsumer(
AbstractConsumer, ):
"""
使用kombu作为中间件,这个能直接一次性支持很多种小众中间件，但性能很差，除非是分布式函数调度框架没实现的中间件种类用户才可以用这种，用户也可以自己对比性能。
"""
BROKER_KIND = 15
def custom_init(self):
self._middware_name = frame_config.KOMBU_URL.split(":")[0]
logger_name = f'{self._logger_prefix}{self.__class__.__name__}--{self._middware_name}--{self._queue_name}'
self.logger = LogManager(logger_name).get_logger_and_add_handlers(
self._log_level,
log_filename=f'{logger_name}.log'
if self._create_logger_file else None,
formatter_template=frame_config.
NB_LOG_FORMATER_INDEX_FOR_CONSUMER_AND_PUBLISHER,
) #
patch_kombu_redis()
# noinspection DuplicatedCode
def _shedual_task(self): # 这个倍while 1 启动的，会自动重连。
def callback(body: dict,
message: kombu.transport.virtual.base.Message):
# print(type(body),body,type(message),message)
self._print_message_get_from_broker('kombu', body)
# self.logger.debug(f""" 从 kombu {self._middware_name} 中取出的消息是 {body}""")
kw = {
'body': body,
'message': message,
}
self._submit_task(kw)
self.exchange = Exchange('distributed_framework_exchange',
'direct',
durable=True)
self.queue = Queue(self._queue_name,
exchange=self.exchange,
routing_key=self._queue_name,
auto_delete=False)
self.conn = Connection(frame_config.KOMBU_URL,
transport_options={"visibility_timeout":
600}) # 默认3600秒unacked重回队列
self.queue(self.conn).declare()
with self.conn.Consumer(self.queue,
callbacks=[callback],
no_ack=False,
prefetch_count=100) as consumer:
# Process messages and handle events on all channels
channel = consumer.channel # type:Channel
channel.body_encoding = 'no_encode' # 这里改了编码，存到中间件的参数默认把消息base64了，我觉得没必要不方便查看消息明文。
while True:
self.conn.drain_events()
def _confirm_consume(self, kw):
pass # redis没有确认消费的功能。
kw['message'].ack()
def _requeue(self, kw):
kw['message'].requeue()
def run_pulse_listener(username, password, timeout, no_send):
"""Run a Pulse message queue listener."""
connection = Connection(
hostname='pulse.mozilla.org',
port=5671,
ssl=True,
userid=username,
password=password,
)
# Connect and pass in our own low value for retries so the connection
# fails fast if there is a problem.
connection.ensure_connection(
max_retries=1
) # Retries must be >=1 or it will retry forever.
with closing(connection):
hgpush_exchange = Exchange(config.PULSE_EXCHANGE, 'topic', channel=connection)
# Pulse queue names need to be prefixed with the username
queue_name = f'queue/{username}/{config.PULSE_QUEUE_NAME}'
queue = Queue(
queue_name,
exchange=hgpush_exchange,
routing_key=config.PULSE_QUEUE_ROUTING_KEY,
durable=True,
exclusive=False,
auto_delete=False,
channel=connection,
)
# Passing passive=True will assert that the exchange exists but won't
# try to declare it. The Pulse server forbids declaring exchanges.
hgpush_exchange.declare(passive=True)
# Queue.declare() also declares the exchange, which isn't allowed by
# the Pulse server. Use the low-level Queue API to only declare the
# queue itself.
queue.queue_declare()
queue.queue_bind()
callback = partial(process_push_message, no_send=no_send)
# Pass auto_declare=False so that Consumer does not try to declare the
# exchange. Declaring exchanges is not allowed by the Pulse server.
with connection.Consumer(
queue, callbacks=[callback], auto_declare=False
) as consumer:
if no_send:
log.info('transmission of ping data has been disabled')
log.info('message acks has been disabled')
log.info('reading messages')
try:
connection.drain_events(timeout=timeout)
except socket.timeout:
log.info('message queue is empty, nothing to do')
log.info('done')
def test_accept__content_disallowed(self):
conn = Connection('memory://')
q = Queue('foo', exchange=self.exchange)
p = conn.Producer()
p.publish(
{'complex': object()},
declare=[q], exchange=self.exchange, serializer='pickle',
)
callback = Mock(name='callback')
with conn.Consumer(queues=[q], callbacks=[callback]) as consumer:
with self.assertRaises(consumer.ContentDisallowed):
conn.drain_events(timeout=1)
callback.assert_not_called()
def test_accept__content_allowed(self):
conn = Connection('memory://')
q = Queue('foo', exchange=self.exchange)
p = conn.Producer()
p.publish(
{'complex': object()},
declare=[q], exchange=self.exchange, serializer='pickle',
)
callback = Mock(name='callback')
with conn.Consumer(queues=[q], accept=['pickle'],
callbacks=[callback]):
conn.drain_events(timeout=1)
callback.assert_called()
body, message = callback.call_args[0]
self.assertTrue(body['complex'])
def start(self):
log.info("Listening for Pulse messages")
self.running = True
connection = Connection(
hostname=self.pulse_host,
userid=self.pulse_user,
password=self.pulse_password,
ssl=True,
# Kombu doesn't support the port correctly for amqp with ssl...
port=5671,
)
consumers = []
for event in self.events:
log.debug("Setting up queue on exchange: %s with routing_key: %s", event.exchange, event.routing_key)
# Passive exchanges must be used, otherwise kombu will try to
# create the exchange (which we don't want, we're consuming
# an existing one!)
e = Exchange(name=event.exchange, type="topic", passive=True)
q = Queue(
name=event.queue_name,
exchange=e,
routing_key=event.routing_key,
durable=True,
exclusive=False,
auto_delete=False
)
c = connection.Consumer(
queues=[q],
callbacks=[event.callback]
)
c.consume()
consumers.append(c)
try:
# XXX: drain_events only returns after receiving a message. Is
# there a way we can have it return regularly to be non-blocking?
# Its timeout parameter seems to break receiving of messages.
# Maybe it doesn't matter if we can't shut down gracefully since
# messages will be reprocessed next time.
while self.running:
connection.drain_events()
finally:
for c in consumers:
c.close()
connection.close()
class Amqp(object):
def __init__(self, url, exchange, queue, routing_key):
self.conn = Connection(url)
self.exchange = Exchange(exchange, 'direct')
self.routing_key = routing_key
self.queue = Queue(queue, self.exchange, self.routing_key)
self.producer = None
self.consumer = None
def send(self, obj):
if not self.producer:
self.producer = self.conn.Producer()
self.producer.publish(obj,
exchange=self.exchange,
routing_key=self.routing_key,
declare=[self.queue],
serializer='json',
compression='zlib')
def poll(self, cb_func):
if not self.consumer:
self.consumer = self.conn.Consumer(self.queue, callbacks=[cb_func])
self.consumer.qos(prefetch_count=1)
self.consumer.consume()
while True:
self.conn.drain_events()
def _release(self):
if self.consumer:
self.consumer.close()
self.consumer = None
if self.producer:
self.producer.close()
self.producer = None
if self.conn:
self.conn.release()
self.conn = None
def __enter__(self):
return self
def __exit__(self, exec_type, exc_value, traceback):
self._release()
def listen(self):
logger = utils.getLogger()
connect_timeout = 5
wait = 30
connection = None
restart = True
while restart:
restart = False
try:
# connection does not connect to the server until
# either the connection.connect() method is called
# explicitly or until kombu calls it implicitly as
# needed.
logger.debug('AutophonePulseMonitor: Connection()')
connection = Connection(hostname=self.hostname,
userid=self.userid,
password=self.password,
virtual_host=self.virtual_host,
port=DEFAULT_SSL_PORT,
ssl=True,
connect_timeout=connect_timeout)
logger.debug('AutophonePulseMonitor: connection.Consumer()')
consumer = connection.Consumer(self.queues,
callbacks=[self.handle_message],
accept=['json'],
auto_declare=False)
logger.debug('AutophonePulseMonitor: bind queues')
for queue in self.queues:
queue(connection).queue_declare(passive=False)
queue(connection).queue_bind()
with consumer:
while not self._stopping.is_set():
try:
connection.drain_events(timeout=self.timeout)
except socket.timeout:
pass
except socket.error, e:
if "timed out" not in str(e):
raise
logger.debug('AutophonePulseMonitor.listen: stopping')
except:
def setup_rabbitmq_client(options):
global RABBITMQ_CLIENT
try:
RABBITMQ_CLIENT
except NameError:
mqConnString = 'amqp://{0}:{1}@{2}:{3}//'.format(
options.mquser, options.mqpassword, options.mqalertserver,
options.mqport)
mqAlertConn = Connection(mqConnString)
alertExchange = Exchange(name=options.alertExchange,
type='topic',
durable=True,
delivery_mode=1)
alertExchange(mqAlertConn).declare()
alertQueue = Queue(options.queueName,
exchange=alertExchange,
routing_key=options.alerttopic,
durable=False,
no_ack=(not options.mqack))
alertQueue(mqAlertConn).declare()
RABBITMQ_CLIENT = mqAlertConn.Consumer(alertQueue, accept=['json'])
return RABBITMQ_CLIENT
while True:
connection.drain_events()
'''
def handle_message(body, message):
try:
print " message is: ", body
message.ack()
except Exception, e:
print 'handle message error'
connection = Connection('amqp://*****:*****@192.168.3.82:5672//')
consumer = connection.Consumer(queue, callbacks=[handle_message])
consumer.qos(prefetch_count=1)
consumer.consume()
for t in range(10000):
try:
connection.drain_events()
#eventloop(connection)
except Exception, e:
print e
pass
# with Consumer(connection, queue, callbacks=[handle_message]) as consumer:
# for i in range(3):
# print 'consumer start'
# connection.drain_events(timeout=1)
def listen(self):
connect_timeout = 5
wait = 30
connection = None
restart = True
while restart:
restart = False
if self.verbose:
LOGGER.debug(
'AutophonePulseMonitor: start shared_lock.acquire')
self.shared_lock.acquire()
try:
# connection does not connect to the server until
# either the connection.connect() method is called
# explicitly or until kombu calls it implicitly as
# needed.
LOGGER.debug('AutophonePulseMonitor: Connection()')
connection = Connection(hostname=self.hostname,
userid=self.userid,
password=self.password,
virtual_host=self.virtual_host,
port=DEFAULT_SSL_PORT,
ssl=True,
connect_timeout=connect_timeout)
LOGGER.debug('AutophonePulseMonitor: connection.Consumer()')
consumer = connection.Consumer(self.queues,
callbacks=[self.handle_message],
accept=['json'],
auto_declare=False)
LOGGER.debug('AutophonePulseMonitor: bind queues')
for queue in self.queues:
queue(connection).queue_declare(passive=False)
queue(connection).queue_bind()
with consumer:
while not self._stopping.is_set():
try:
if self.verbose:
LOGGER.debug(
'AutophonePulseMonitor shared_lock.release'
)
self.shared_lock.release()
connection.drain_events(timeout=self.timeout)
except socket.timeout:
pass
finally:
if self.verbose:
LOGGER.debug(
'AutophonePulseMonitor shared_lock.acquire'
)
self.shared_lock.acquire()
LOGGER.debug('AutophonePulseMonitor.listen: stopping')
except:
LOGGER.exception('AutophonePulseMonitor Exception')
if connection:
connection.release()
if self.verbose:
LOGGER.debug(
'AutophonePulseMonitor exit shared_lock.release')
self.shared_lock.release()
if not self._stopping.is_set():
restart = True
time.sleep(wait)
if self.verbose:
LOGGER.debug('AutophonePulseMonitor shared_lock.acquire')
self.shared_lock.acquire()
finally:
if self.verbose:
LOGGER.debug(
'AutophonePulseMonitor exit shared_lock.release')
if connection and not restart:
connection.release()
self.shared_lock.release()
class test_PyroTransport:
def setup(self):
self.c = Connection(transport='pyro', virtual_host="kombu.broker")
self.e = Exchange('test_transport_pyro')
self.q = Queue('test_transport_pyro',
exchange=self.e,
routing_key='test_transport_pyro')
self.q2 = Queue('test_transport_pyro2',
exchange=self.e,
routing_key='test_transport_pyro2')
self.fanout = Exchange('test_transport_pyro_fanout', type='fanout')
self.q3 = Queue('test_transport_pyro_fanout1', exchange=self.fanout)
self.q4 = Queue('test_transport_pyro_fanout2', exchange=self.fanout)
def test_driver_version(self):
assert self.c.transport.driver_version()
@pytest.mark.skip("requires running Pyro nameserver and Kombu Broker")
def test_produce_consume_noack(self):
channel = self.c.channel()
producer = Producer(channel, self.e)
consumer = Consumer(channel, self.q, no_ack=True)
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_pyro')
_received = []
def callback(message_data, message):
_received.append(message)
consumer.register_callback(callback)
consumer.consume()
while 1:
if len(_received) == 10:
break
self.c.drain_events()
assert len(_received) == 10
def test_drain_events(self):
with pytest.raises(socket.timeout):
self.c.drain_events(timeout=0.1)
c1 = self.c.channel()
c2 = self.c.channel()
with pytest.raises(socket.timeout):
self.c.drain_events(timeout=0.1)
del (c1) # so pyflakes doesn't complain.
del (c2)
@pytest.mark.skip("requires running Pyro nameserver and Kombu Broker")
def test_drain_events_unregistered_queue(self):
c1 = self.c.channel()
producer = self.c.Producer()
consumer = self.c.Consumer([self.q2])
producer.publish(
{'hello': 'world'},
declare=consumer.queues,
routing_key=self.q2.routing_key,
exchange=self.q2.exchange,
)
message = consumer.queues[0].get()._raw
class Cycle(object):
def get(self, callback, timeout=None):
return (message, 'foo'), c1
self.c.transport.cycle = Cycle()
self.c.drain_events()
@pytest.mark.skip("requires running Pyro nameserver and Kombu Broker")
def test_queue_for(self):
chan = self.c.channel()
x = chan._queue_for('foo')
assert x
assert chan._queue_for('foo') is x
class MozReviewBot(object):
def __init__(self,
config_path=None,
reviewboard_url=None,
reviewboard_user=None,
reviewboard_password=None,
pulse_host=None,
pulse_port=None,
pulse_userid=None,
pulse_password=None,
exchange=None,
queue=None,
routing_key=None,
pulse_timeout=None,
pulse_ssl=False,
repo_root=None,
logger=None):
if logger is None:
self.logger = logging.getLogger('mozreviewbot')
else:
self.logger = logger
# We use options passed into __init__ preferentially. If any of these
# are not specified, we next check the configuration file, if any.
# Finally, we use environment variables.
if config_path and not os.path.isfile(config_path):
# ConfigParser doesn't seem to throw if it is unable to find the
# config file so we'll explicitly check that it exists.
self.logger.error('could not locate config file: %s' %
(config_path))
config_path = None
if config_path:
try:
config = ConfigParser()
config.read(config_path)
reviewboard_url = (reviewboard_url
or config.get('reviewboard', 'url'))
reviewboard_user = (reviewboard_user
or config.get('reviewboard', 'user'))
reviewboard_password = (reviewboard_password or config.get(
'reviewboard', 'password'))
pulse_host = pulse_host or config.get('pulse', 'host')
pulse_port = pulse_port or config.get('pulse', 'port')
pulse_userid = pulse_userid or config.get('pulse', 'userid')
pulse_password = pulse_password or config.get(
'pulse', 'password')
exchange = exchange or config.get('pulse', 'exchange')
queue = queue or config.get('pulse', 'queue')
routing_key = routing_key or config.get('pulse', 'routing_key')
pulse_timeout = pulse_timeout or config.get('pulse', 'timeout')
if pulse_ssl is None:
pulse_ssl = config.get('pulse', 'ssl')
except NoSectionError as e:
self.logger.error('configuration file missing section: %s' %
e.section)
try:
repo_root = repo_root or config.get('hg', 'repo_root')
except (NoOptionError, NoSectionError):
# Subclasses do not need to define repo root if they do not
# plan on using the hg functionality.
pass
# keep config around in case any subclasses would like to extract
# options from it.
self.config = config
else:
self.config = None
reviewboard_url = reviewboard_url or os.environ.get('REVIEWBOARD_URL')
pulse_host = pulse_host or os.environ.get('PULSE_HOST')
pulse_port = pulse_port or os.environ.get('PULSE_PORT')
self.rbclient = RBClient(reviewboard_url,
username=reviewboard_user,
password=reviewboard_password)
self.api_root = self.rbclient.get_root()
self.conn = Connection(hostname=pulse_host,
port=pulse_port,
userid=pulse_userid,
password=pulse_password,
ssl=pulse_ssl)
self.exchange = Exchange(exchange, type='topic', durable=True)
self.queue = Queue(name=queue,
exchange=self.exchange,
durable=True,
routing_key=routing_key,
exclusive=False,
auto_delete=False)
self.pulse_timeout = float(pulse_timeout)
self.repo_root = repo_root
self.hg = None
for DIR in os.environ['PATH'].split(os.pathsep):
p = os.path.join(DIR, 'hg')
if os.path.exists(p):
self.hg = p
def _get_available_messages(self):
messages = []
def onmessage(body, message):
messages.append((body, message))
consumer = self.conn.Consumer([self.queue],
callbacks=[onmessage],
auto_declare=True)
with consumer:
try:
self.conn.drain_events(timeout=self.pulse_timeout)
except socket.timeout:
pass
return messages
def _run_hg(self, hg_args):
# TODO: Use hgtool.
args = [self.hg] + hg_args
env = dict(os.environ)
env['HGENCODING'] = 'utf-8'
null = open(os.devnull, 'w')
# Execute at / to prevent Mercurial's path traversal logic from
# kicking in and picking up unwanted config files.
return subprocess.check_output(args,
stdin=null,
stderr=null,
env=env,
cwd='/')
def ensure_hg_repo_exists(self, landing_repo_url, repo_url, pull_rev=None):
# TODO: Use the root changeset in each repository as an identifier.
# This will enable "forks" to share the same local clone.
# The "share" extension now has support for this.
# Read hg help -e share for details about "pooled storage."
# We should probably deploy that.
url = landing_repo_url or repo_url
sha1 = hashlib.sha1(url).hexdigest()
repo_path = os.path.join(self.repo_root, sha1)
if not os.path.exists(repo_path):
args = ['clone', url, repo_path]
self.logger.debug('cloning %s' % url)
self._run_hg(args)
self.logger.debug('finished cloning %s' % url)
args = ['-R', repo_path, 'pull', repo_url]
if pull_rev:
args.extend(['-r', pull_rev])
self.logger.debug('pulling %s' % repo_url)
self._run_hg(args)
self.logger.debug('finished pulling %s' % repo_url)
return repo_path
def hg_commit_changes(self, repo_path, node, diff_context=None):
"""Obtain information about what changed in a Mercurial commit.
The return value is a tuple of:
(set(adds), set(dels), set(mods), None, diff)
The first 4 items list what files changed in the changeset. The last
item is a unified diff of the changeset.
File copies are currently not returned. ``None`` is being used as a
placeholder until support is needed.
"""
part_delim = str(uuid.uuid4())
item_delim = str(uuid.uuid4())
parts = [
'{join(file_adds, "%s")}' % item_delim,
'{join(file_dels, "%s")}' % item_delim,
'{join(file_mods, "%s")}' % item_delim,
'{join(file_copies, "%s")}' % item_delim,
]
template = part_delim.join(parts)
self._run_hg(['-R', repo_path, 'up', '-C', node])
res = self._run_hg(
['-R', repo_path, 'log', '-r', node, '-T', template])
diff_args = ['-R', repo_path, 'diff', '-c', node]
if diff_context is not None:
diff_args.extend(['-U', str(diff_context)])
diff = self._run_hg(diff_args)
adds, dels, mods, copies = res.split(part_delim)
adds = set(f for f in adds.split(item_delim) if f)
dels = set(f for f in dels.split(item_delim) if f)
mods = set(f for f in mods.split(item_delim) if f)
# TODO parse the copies.
return adds, dels, mods, None, diff
def strip_nonpublic_changesets(self, repo_path):
"""Strip non-public changesets from a repository.
Pulling changesets over and over results in many heads in a repository.
This makes Mercurial slow. So, we prune non-public changesets/heads
to keep repositories fast.
"""
self._run_hg([
'-R', repo_path, '--config', 'extensions.strip=', 'strip',
'--no-backup', '-r', 'not public()'
])
def get_commit_files(self, commit):
"""Fetches a list of files that were changed by this commit."""
rrid = commit['review_request_id']
diff_revision = commit['diffset_revision']
start = 0
files = []
while True:
result = self.api_root.get_files(review_request_id=rrid,
diff_revision=diff_revision,
start=start)
files.extend(result)
start += result.num_items
if result.num_items == 0 or start >= result.total_results:
break
return files
def handle_available_messages(self):
for body, message in self._get_available_messages():
payload = body['payload']
repo_url = payload['repository_url']
landing_repo_url = payload['landing_repository_url']
commits = payload['commits']
# TODO: should we allow process commits to signal that we should
# skip acknowledging the message?
try:
for commit in commits:
rrid = commit['review_request_id']
diff_revision = commit['diffset_revision']
review = BatchReview(self.api_root, rrid, diff_revision)
self.process_commit(review, landing_repo_url, repo_url,
commit)
finally:
# This prevents the queue from growing indefinitely but
# prevents us from fixing whatever caused the exception
# and restarting the bot to handle the message.
message.ack()
def listen_forever(self):
while True:
self.handle_available_messages()
def process_commit(self, review, repo_url, commits):
pass
#!/usr/bin/env python
from kombu import Connection, Exchange, Queue
def process_message(body, message):
print body
message.ack()
nova_exchange = Exchange('nova', 'topic', durable=False)
notifications_queue = Queue('notification-listener',
exchange=nova_exchange,
routing_key='notifications.info')
conn = Connection('amqp://*****:*****@192.168.0.10//')
consumer = conn.Consumer(notifications_queue, callbacks=[process_message])
consumer.consume()
while True:
conn.drain_events()
#!/usr/bin/env python
from kombu import Connection, Exchange, Queue
def process_message(body, message):
print body
message.ack()
nova_exchange = Exchange('nova', 'topic', durable=False)
nova_queue = Queue('listener', exchange = nova_exchange, routing_key='#')
conn = Connection('amqp://*****:*****@192.168.0.10//')
consumer = conn.Consumer(nova_queue, callbacks=[process_message])
consumer.consume()
while True:
conn.drain_events()
class GenericConsumer(object):
"""Generic publisher class that specific consumers inherit from.
FIXME: Mandatory properties, like "topic", should not be set from generic
functions like configure() but should instead be explicitly required
somewhere, e.g. the constructor.
"""
def __init__(self,
config,
exchange=None,
connect=True,
heartbeat=False,
timeout=None,
**kwargs):
self.config = config
self.exchange = exchange
self.connection = None
self.durable = False
self.applabel = ''
self.heartbeat = heartbeat
self.timeout = timeout
for x in ['applabel', 'topic', 'callback', 'durable']:
if x in kwargs:
setattr(self, x, kwargs[x])
del kwargs[x]
# Only used if there is no applabel.
self.queue_gen_name = None
if connect:
self.connect()
@property
def queue_name(self):
# This is a property instead of being set in the constructor since
# applabel can be set later via configure().
queue_name = 'queue/%s/' % self.config.user
if self.applabel:
queue_name += self.applabel
else:
if not self.queue_gen_name:
self.queue_gen_name = str(uuid.uuid1())
queue_name += self.queue_gen_name
return queue_name
def configure(self, **kwargs):
"""Sets variables."""
for x in kwargs:
setattr(self, x, kwargs[x])
def connect(self):
if not self.connection:
self.connection = Connection(hostname=self.config.host,
port=self.config.port,
userid=self.config.user,
password=self.config.password,
virtual_host=self.config.vhost,
ssl=self.config.ssl)
def disconnect(self):
if self.connection:
self.connection.release()
self.connection = None
def purge_existing_messages(self):
"""Purge messages that are already in the queue on the broker.
TODO: I think this is only supported by the amqp backend.
"""
if self.durable and not self.applabel:
raise InvalidAppLabel('Durable consumers must have an applabel')
if not self.connection:
self.connect()
queue = self._create_queue()
try:
queue(self.connection).purge()
except ChannelError as e:
if e.message == 404:
pass
raise
def queue_exists(self):
self._check_params()
if not self.connection:
self.connect()
queue = self._create_queue()
try:
queue(self.connection).queue_declare(passive=True)
except ChannelError as e:
if e.message == 404 or e.reply_code == 404:
return False
raise
return True
def delete_queue(self):
self._check_params()
if not self.connection:
self.connect()
queue = self._create_queue()
try:
queue(self.connection).delete()
except ChannelError as e:
if e.message != 404:
raise
def listen(self, callback=None, on_connect_callback=None):
"""Blocks and calls the callback when a message comes into the queue.
For info on one script listening to multiple channels, see
http://ask.github.com/carrot/changelog.html#id1.
"""
while True:
consumer = self._build_consumer(
callback=callback, on_connect_callback=on_connect_callback)
with consumer:
self._drain_events_loop()
def _build_consumer(self, callback=None, on_connect_callback=None):
# One can optionally provide a callback to listen (if it wasn't already)
if callback:
self.callback = callback
self._check_params()
if not self.connection:
self.connect()
exchange = Exchange(self.exchange[0], type='topic')
# Raise an error if the exchange doesn't exist.
exchange(self.connection).declare(passive=True)
# Create a queue.
queue = self._create_queue(exchange, self.topic[0])
if on_connect_callback:
on_connect_callback()
# Don't autodeclare, since we don't want consumers trying to
# declare exchanges.
consumer = self.connection.Consumer(queue,
auto_declare=False,
callbacks=[self.callback])
consumer.queues[0].queue_declare()
# Bind to the first key.
consumer.queues[0].queue_bind()
# Bind to any additional keys.
for new_exchange, new_topic in zip(self.exchange[1:], self.topic[1:]):
exchange = Exchange(new_exchange, type='topic')
exchange(self.connection).declare(passive=True)
consumer.queues[0].bind_to(new_exchange, new_topic)
if self.heartbeat:
hb_exchange = Exchange('exchange/pulse/test', type='topic')
consumer.queues[0].bind_to(hb_exchange, 'heartbeat')
return consumer
def _drain_events_loop(self):
while True:
try:
self.connection.drain_events(timeout=self.timeout)
except socket_timeout:
logging.warning("Timeout! Restarting pulse consumer.")
try:
self.disconnect()
except Exception:
logging.warning("Problem with disconnect().")
break
def _check_params(self):
if not self.exchange:
raise InvalidExchange(self.exchange)
if not self.topic:
raise InvalidTopic(self.topic)
if self.durable and not self.applabel:
raise InvalidAppLabel('Durable consumers must have an applabel')
if not self.callback or not hasattr(self.callback, '__call__'):
raise InvalidCallback(self.callback)
# We support multiple bindings if we were given an array for the topic.
if not isinstance(self.topic, list):
self.topic = [self.topic]
# We support multiple exchanges if we were given an array for
# the exchange. In this case, the exchange list and the topic
# list must have the same length.
if not isinstance(self.exchange, list):
self.exchange = [self.exchange] * len(self.topic)
elif len(self.exchange) != len(self.topic):
raise InvalidExchange(
"The list of exchanges must have the same length as the list of"
" topics.")
def _create_queue(self, exchange=None, routing_key=''):
return Queue(name=self.queue_name,
exchange=exchange,
routing_key=routing_key,
durable=self.durable,
exclusive=False,
auto_delete=not self.durable)
class camqp(threading.Thread):
def __init__(self,
host="localhost",
port=5672,
userid="guest",
password="******",
virtual_host="canopsis",
exchange_name="canopsis",
logging_name="camqp",
logging_level=logging.INFO,
read_config_file=True,
auto_connect=True,
on_ready=None):
threading.Thread.__init__(self)
self.logger = logging.getLogger(logging_name)
self.host = host
self.port = port
self.userid = userid
self.password = password
self.virtual_host = virtual_host
self.exchange_name = exchange_name
self.logging_level = logging_level
if (read_config_file):
self.read_config("amqp")
self.amqp_uri = "amqp://%s:%s@%s:%s/%s" % (self.userid, self.password,
self.host, self.port,
self.virtual_host)
self.logger.setLevel(logging_level)
self.exchange_name_events = exchange_name + ".events"
self.exchange_name_alerts = exchange_name + ".alerts"
self.exchange_name_incidents = exchange_name + ".incidents"
self.chan = None
self.conn = None
self.connected = False
self.on_ready = on_ready
self.RUN = True
self.exchanges = {}
self.queues = {}
self.paused = False
self.connection_errors = (
ConnectionError,
socket.error,
IOError,
OSError,
)
#AttributeError)
## create exchange
self.logger.debug("Create exchanges object")
for exchange_name in [
self.exchange_name, self.exchange_name_events,
self.exchange_name_alerts, self.exchange_name_incidents
]:
self.logger.debug(" + %s" % exchange_name)
self.get_exchange(exchange_name)
if auto_connect:
self.connect()
self.logger.debug("Object canamqp initialized")
def run(self):
self.logger.debug("Start thread ...")
reconnect = False
while self.RUN:
self.connect()
#self.wait_connection()
if self.connected:
self.init_queue(reconnect=reconnect)
self.logger.debug("Drain events ...")
while self.RUN:
try:
if not self.paused:
self.conn.drain_events(timeout=0.5)
else:
time.sleep(0.5)
except socket.timeout:
pass
except self.connection_errors as err:
self.logger.error("Connection error ! (%s)" % err)
break
except Exception as err:
self.logger.error("Unknown error: %s (%s)" %
(err, type(err)))
traceback.print_exc(file=sys.stdout)
break
self.disconnect()
if self.RUN:
self.logger.error(
"Connection loss, try to reconnect in few seconds ...")
reconnect = True
self.wait_connection(timeout=5)
self.logger.debug("End of thread ...")
def stop(self):
self.logger.debug("Stop thread ...")
self.RUN = False
def connect(self):
if not self.connected:
self.logger.info("Connect to AMQP Broker (%s:%s)" %
(self.host, self.port))
self.conn = Connection(self.amqp_uri)
try:
self.logger.debug(" + Connect")
self.conn.connect()
self.logger.info("Connected to AMQP Broker.")
self.producers = kombu.pools.Producers(limit=10)
self.connected = True
except Exception as err:
self.conn.release()
self.logger.error("Impossible to connect (%s)" % err)
if self.connected:
self.logger.debug(" + Open channel")
try:
self.chan = self.conn.channel()
self.logger.debug(
"Channel openned. Ready to send messages")
try:
## declare exchange
self.logger.debug("Declare exchanges")
for exchange_name in self.exchanges:
self.logger.debug(" + %s" % exchange_name)
self.exchanges[exchange_name](self.chan).declare()
except Exception as err:
self.logger.error(
"Impossible to declare exchange (%s)" % err)
except Exception as err:
self.logger.error(err)
else:
self.logger.debug("Allready connected")
def get_exchange(self, name):
if name:
try:
return self.exchanges[name]
except:
if name == "amq.direct":
self.exchanges[name] = Exchange(name,
"direct",
durable=True)
else:
self.exchanges[name] = Exchange(name,
"topic",
durable=True,
auto_delete=False)
return self.exchanges[name]
else:
return None
def init_queue(self, reconnect=False):
if self.queues:
self.logger.debug("Init queues")
for queue_name in self.queues.keys():
self.logger.debug(" + %s" % queue_name)
qsettings = self.queues[queue_name]
if not qsettings['queue']:
self.logger.debug(" + Create queue")
# copy list
routing_keys = list(qsettings['routing_keys'])
routing_key = None
if len(routing_keys):
routing_key = routing_keys[0]
routing_keys = routing_keys[1:]
exchange = self.get_exchange(qsettings['exchange_name'])
if (qsettings['exchange_name'] == "amq.direct"
and not routing_key):
routing_key = queue_name
#self.logger.debug(" + exchange: '%s', routing_key: '%s', exclusive: %s, auto_delete: %s, no_ack: %s" % (qsettings['exchange_name'], routing_key, qsettings['exclusive'], qsettings['auto_delete'], qsettings['no_ack']))
self.logger.debug(
" + exchange: '%s', exclusive: %s, auto_delete: %s, no_ack: %s"
% (qsettings['exchange_name'], qsettings['exclusive'],
qsettings['auto_delete'], qsettings['no_ack']))
qsettings['queue'] = Queue(
queue_name,
exchange=exchange,
routing_key=routing_key,
exclusive=qsettings['exclusive'],
auto_delete=qsettings['auto_delete'],
no_ack=qsettings['no_ack'],
channel=self.conn.channel())
qsettings['queue'].declare()
if len(routing_keys):
self.logger.debug(" + Bind on all routing keys")
for routing_key in routing_keys:
self.logger.debug(" + routing_key: '%s'" %
routing_key)
try:
qsettings['queue'].bind_to(
exchange=exchange, routing_key=routing_key)
except:
self.logger.error(
"You need upgrade your Kombu version (%s)"
% kombu.__version__)
if not qsettings['consumer']:
self.logger.debug(" + Create Consumer")
qsettings['consumer'] = self.conn.Consumer(
qsettings['queue'], callbacks=[qsettings['callback']])
self.logger.debug(" + Consume queue")
qsettings['consumer'].consume()
if self.on_ready:
self.on_ready()
def add_queue(self,
queue_name,
routing_keys,
callback,
exchange_name=None,
no_ack=True,
exclusive=False,
auto_delete=True):
#if exchange_name == "amq.direct":
# routing_keys = queue_name
c_routing_keys = []
if not isinstance(routing_keys, list):
if isinstance(routing_keys, str):
c_routing_keys = [routing_keys]
else:
c_routing_keys = routing_keys
if not exchange_name:
exchange_name = self.exchange_name
self.queues[queue_name] = {
'queue': False,
'consumer': False,
'queue_name': queue_name,
'routing_keys': c_routing_keys,
'callback': callback,
'exchange_name': exchange_name,
'no_ack': no_ack,
'exclusive': exclusive,
'auto_delete': auto_delete
}
def publish(self,
msg,
routing_key,
exchange_name=None,
serializer="json",
compression=None,
content_type=None,
content_encoding=None):
self.wait_connection()
if self.connected:
if not exchange_name:
exchange_name = self.exchange_name
self.logger.debug("Send message to %s in %s" %
(routing_key, exchange_name))
with self.producers[self.conn].acquire(block=True) as producer:
try:
_msg = msg.copy()
camqp._clean_msg_for_serialization(_msg)
producer.publish(_msg,
serializer=serializer,
compression=compression,
routing_key=routing_key,
exchange=self.get_exchange(exchange_name))
self.logger.debug(" + Sended")
except Exception, err:
self.logger.error(" + Impossible to send (%s)" % err)
else:
class test_MemoryTransport(Case):
def setUp(self):
self.c = Connection(transport='memory')
self.e = Exchange('test_transport_memory')
self.q = Queue('test_transport_memory',
exchange=self.e,
routing_key='test_transport_memory')
self.q2 = Queue('test_transport_memory2',
exchange=self.e,
routing_key='test_transport_memory2')
self.fanout = Exchange('test_transport_memory_fanout', type='fanout')
self.q3 = Queue('test_transport_memory_fanout1', exchange=self.fanout)
self.q4 = Queue('test_transport_memory_fanout2', exchange=self.fanout)
def test_driver_version(self):
self.assertTrue(self.c.transport.driver_version())
def test_produce_consume_noack(self):
channel = self.c.channel()
producer = Producer(channel, self.e)
consumer = Consumer(channel, self.q, no_ack=True)
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory')
_received = []
def callback(message_data, message):
_received.append(message)
consumer.register_callback(callback)
consumer.consume()
while 1:
if len(_received) == 10:
break
self.c.drain_events()
self.assertEqual(len(_received), 10)
def test_produce_consume_fanout(self):
producer = self.c.Producer()
consumer = self.c.Consumer([self.q3, self.q4])
producer.publish(
{'hello': 'world'},
declare=consumer.queues,
exchange=self.fanout,
)
self.assertEqual(self.q3(self.c).get().payload, {'hello': 'world'})
self.assertEqual(self.q4(self.c).get().payload, {'hello': 'world'})
self.assertIsNone(self.q3(self.c).get())
self.assertIsNone(self.q4(self.c).get())
def test_produce_consume(self):
channel = self.c.channel()
producer = Producer(channel, self.e)
consumer1 = Consumer(channel, self.q)
consumer2 = Consumer(channel, self.q2)
self.q2(channel).declare()
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory')
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory2')
_received1 = []
_received2 = []
def callback1(message_data, message):
_received1.append(message)
message.ack()
def callback2(message_data, message):
_received2.append(message)
message.ack()
consumer1.register_callback(callback1)
consumer2.register_callback(callback2)
consumer1.consume()
consumer2.consume()
while 1:
if len(_received1) + len(_received2) == 20:
break
self.c.drain_events()
self.assertEqual(len(_received1) + len(_received2), 20)
# compression
producer.publish({'compressed': True},
routing_key='test_transport_memory',
compression='zlib')
m = self.q(channel).get()
self.assertDictEqual(m.payload, {'compressed': True})
# queue.delete
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory')
self.assertTrue(self.q(channel).get())
self.q(channel).delete()
self.q(channel).declare()
self.assertIsNone(self.q(channel).get())
# queue.purge
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory2')
self.assertTrue(self.q2(channel).get())
self.q2(channel).purge()
self.assertIsNone(self.q2(channel).get())
def test_drain_events(self):
with self.assertRaises(socket.timeout):
self.c.drain_events(timeout=0.1)
c1 = self.c.channel()
c2 = self.c.channel()
with self.assertRaises(socket.timeout):
self.c.drain_events(timeout=0.1)
del (c1) # so pyflakes doesn't complain.
del (c2)
def test_drain_events_unregistered_queue(self):
c1 = self.c.channel()
class Cycle(object):
def get(self, timeout=None):
return ('foo', 'foo'), c1
self.c.transport.cycle = Cycle()
with self.assertRaises(KeyError):
self.c.drain_events()
def test_queue_for(self):
chan = self.c.channel()
chan.queues.clear()
x = chan._queue_for('foo')
self.assertTrue(x)
self.assertIs(chan._queue_for('foo'), x)
class test_Consumer:
def setup(self):
self.connection = Connection(transport=Transport)
self.connection.connect()
assert self.connection.connection.connected
self.exchange = Exchange('foo', 'direct')
def test_accept(self):
a = Consumer(self.connection)
assert a.accept is None
b = Consumer(self.connection, accept=['json', 'pickle'])
assert b.accept == {
'application/json',
'application/x-python-serialize',
}
c = Consumer(self.connection, accept=b.accept)
assert b.accept == c.accept
def test_enter_exit_cancel_raises(self):
c = Consumer(self.connection)
c.cancel = Mock(name='Consumer.cancel')
c.cancel.side_effect = KeyError('foo')
with c:
pass
c.cancel.assert_called_with()
def test_receive_callback_accept(self):
message = Mock(name='Message')
message.errors = []
callback = Mock(name='on_message')
c = Consumer(self.connection, accept=['json'], on_message=callback)
c.on_decode_error = None
c.channel = Mock(name='channel')
c.channel.message_to_python = None
c._receive_callback(message)
callback.assert_called_with(message)
assert message.accept == c.accept
def test_accept__content_disallowed(self):
conn = Connection('memory://')
q = Queue('foo', exchange=self.exchange)
p = conn.Producer()
p.publish(
{'complex': object()},
declare=[q],
exchange=self.exchange,
serializer='pickle',
)
callback = Mock(name='callback')
with conn.Consumer(queues=[q], callbacks=[callback]) as consumer:
with pytest.raises(consumer.ContentDisallowed):
conn.drain_events(timeout=1)
callback.assert_not_called()
def test_accept__content_allowed(self):
conn = Connection('memory://')
q = Queue('foo', exchange=self.exchange)
p = conn.Producer()
p.publish(
{'complex': object()},
declare=[q],
exchange=self.exchange,
serializer='pickle',
)
callback = Mock(name='callback')
with conn.Consumer(queues=[q], accept=['pickle'],
callbacks=[callback]):
conn.drain_events(timeout=1)
callback.assert_called()
body, message = callback.call_args[0]
assert body['complex']
def test_set_no_channel(self):
c = Consumer(None)
assert c.channel is None
c.revive(Mock())
assert c.channel
def test_set_no_ack(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True, no_ack=True)
assert consumer.no_ack
def test_add_queue_when_auto_declare(self):
consumer = self.connection.Consumer(auto_declare=True)
q = Mock()
q.return_value = q
consumer.add_queue(q)
assert q in consumer.queues
q.declare.assert_called_with()
def test_add_queue_when_not_auto_declare(self):
consumer = self.connection.Consumer(auto_declare=False)
q = Mock()
q.return_value = q
consumer.add_queue(q)
assert q in consumer.queues
assert not q.declare.call_count
def test_consume_without_queues_returns(self):
consumer = self.connection.Consumer()
consumer.queues[:] = []
assert consumer.consume() is None
def test_consuming_from(self):
consumer = self.connection.Consumer()
consumer.queues[:] = [Queue('a'), Queue('b'), Queue('d')]
consumer._active_tags = {'a': 1, 'b': 2}
assert not consumer.consuming_from(Queue('c'))
assert not consumer.consuming_from('c')
assert not consumer.consuming_from(Queue('d'))
assert not consumer.consuming_from('d')
assert consumer.consuming_from(Queue('a'))
assert consumer.consuming_from(Queue('b'))
assert consumer.consuming_from('b')
def test_receive_callback_without_m2p(self):
channel = self.connection.channel()
c = channel.Consumer()
m2p = getattr(channel, 'message_to_python')
channel.message_to_python = None
try:
message = Mock()
message.errors = []
message.decode.return_value = 'Hello'
recv = c.receive = Mock()
c._receive_callback(message)
recv.assert_called_with('Hello', message)
finally:
channel.message_to_python = m2p
def test_receive_callback__message_errors(self):
channel = self.connection.channel()
channel.message_to_python = None
c = channel.Consumer()
message = Mock()
try:
raise KeyError('foo')
except KeyError:
message.errors = [sys.exc_info()]
message._reraise_error.side_effect = KeyError()
with pytest.raises(KeyError):
c._receive_callback(message)
def test_set_callbacks(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
callbacks = [lambda x, y: x, lambda x, y: x]
consumer = Consumer(channel,
queue,
auto_declare=True,
callbacks=callbacks)
assert consumer.callbacks == callbacks
def test_auto_declare(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.consume()
consumer.consume() # twice is a noop
assert consumer.queues[0] is not queue
assert consumer.queues[0].is_bound
assert consumer.queues[0].exchange.is_bound
assert consumer.queues[0].exchange is not self.exchange
for meth in ('exchange_declare', 'queue_declare', 'queue_bind',
'basic_consume'):
assert meth in channel
assert channel.called.count('basic_consume') == 1
assert consumer._active_tags
consumer.cancel_by_queue(queue.name)
consumer.cancel_by_queue(queue.name)
assert not consumer._active_tags
def test_consumer_tag_prefix(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, tag_prefix='consumer_')
consumer.consume()
assert consumer._active_tags[queue.name].startswith('consumer_')
def test_manual_declare(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=False)
assert consumer.queues[0] is not queue
assert consumer.queues[0].is_bound
assert consumer.queues[0].exchange.is_bound
assert consumer.queues[0].exchange is not self.exchange
for meth in ('exchange_declare', 'queue_declare', 'basic_consume'):
assert meth not in channel
consumer.declare()
for meth in ('exchange_declare', 'queue_declare', 'queue_bind'):
assert meth in channel
assert 'basic_consume' not in channel
consumer.consume()
assert 'basic_consume' in channel
def test_consume__cancel(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.consume()
consumer.cancel()
assert 'basic_cancel' in channel
assert not consumer._active_tags
def test___enter____exit__(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
context = consumer.__enter__()
assert context is consumer
assert consumer._active_tags
res = consumer.__exit__(None, None, None)
assert not res
assert 'basic_cancel' in channel
assert not consumer._active_tags
def test_flow(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.flow(False)
assert 'flow' in channel
def test_qos(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.qos(30, 10, False)
assert 'basic_qos' in channel
def test_purge(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
b2 = Queue('qname2', self.exchange, 'rkey')
b3 = Queue('qname3', self.exchange, 'rkey')
b4 = Queue('qname4', self.exchange, 'rkey')
consumer = Consumer(channel, [b1, b2, b3, b4], auto_declare=True)
consumer.purge()
assert channel.called.count('queue_purge') == 4
def test_multiple_queues(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
b2 = Queue('qname2', self.exchange, 'rkey')
b3 = Queue('qname3', self.exchange, 'rkey')
b4 = Queue('qname4', self.exchange, 'rkey')
consumer = Consumer(channel, [b1, b2, b3, b4])
consumer.consume()
assert channel.called.count('exchange_declare') == 4
assert channel.called.count('queue_declare') == 4
assert channel.called.count('queue_bind') == 4
assert channel.called.count('basic_consume') == 4
assert len(consumer._active_tags) == 4
consumer.cancel()
assert channel.called.count('basic_cancel') == 4
assert not len(consumer._active_tags)
def test_receive_callback(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
received = []
def callback(message_data, message):
received.append(message_data)
message.ack()
message.payload # trigger cache
consumer.register_callback(callback)
consumer._receive_callback({'foo': 'bar'})
assert 'basic_ack' in channel
assert 'message_to_python' in channel
assert received[0] == {'foo': 'bar'}
def test_basic_ack_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.ack()
message.ack()
consumer.register_callback(callback)
with pytest.raises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
def test_basic_reject(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.reject()
consumer.register_callback(callback)
consumer._receive_callback({'foo': 'bar'})
assert 'basic_reject' in channel
def test_basic_reject_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.reject()
message.reject()
consumer.register_callback(callback)
with pytest.raises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
assert 'basic_reject' in channel
def test_basic_reject__requeue(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.requeue()
consumer.register_callback(callback)
consumer._receive_callback({'foo': 'bar'})
assert 'basic_reject:requeue' in channel
def test_basic_reject__requeue_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.requeue()
message.requeue()
consumer.register_callback(callback)
with pytest.raises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
assert 'basic_reject:requeue' in channel
def test_receive_without_callbacks_raises(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
with pytest.raises(NotImplementedError):
consumer.receive(1, 2)
def test_decode_error(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
consumer.channel.throw_decode_error = True
with pytest.raises(ValueError):
consumer._receive_callback({'foo': 'bar'})
def test_on_decode_error_callback(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
thrown = []
def on_decode_error(msg, exc):
thrown.append((msg.body, exc))
consumer = Consumer(channel, [b1], on_decode_error=on_decode_error)
consumer.channel.throw_decode_error = True
consumer._receive_callback({'foo': 'bar'})
assert thrown
m, exc = thrown[0]
assert json.loads(m) == {'foo': 'bar'}
assert isinstance(exc, ValueError)
def test_recover(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
consumer.recover()
assert 'basic_recover' in channel
def test_revive(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
channel2 = self.connection.channel()
consumer.revive(channel2)
assert consumer.channel is channel2
assert consumer.queues[0].channel is channel2
assert consumer.queues[0].exchange.channel is channel2
def test_revive__with_prefetch_count(self):
channel = Mock(name='channel')
b1 = Queue('qname1', self.exchange, 'rkey')
Consumer(channel, [b1], prefetch_count=14)
channel.basic_qos.assert_called_with(0, 14, False)
def test__repr__(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
assert repr(Consumer(channel, [b1]))
def test_connection_property_handles_AttributeError(self):
p = self.connection.Consumer()
p.channel = object()
assert p.connection is None
class test_Consumer(TestCase):
def setUp(self):
self.connection = Connection(transport=Transport)
self.connection.connect()
self.assertTrue(self.connection.connection.connected)
self.exchange = Exchange('foo', 'direct')
def test_set_no_ack(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True, no_ack=True)
self.assertTrue(consumer.no_ack)
def test_add_queue_when_auto_declare(self):
consumer = self.connection.Consumer(auto_declare=True)
q = Mock()
q.return_value = q
consumer.add_queue(q)
self.assertIn(q, consumer.queues)
q.declare.assert_called_with()
def test_add_queue_when_not_auto_declare(self):
consumer = self.connection.Consumer(auto_declare=False)
q = Mock()
q.return_value = q
consumer.add_queue(q)
self.assertIn(q, consumer.queues)
self.assertFalse(q.declare.call_count)
def test_consume_without_queues_returns(self):
consumer = self.connection.Consumer()
consumer.queues[:] = []
self.assertIsNone(consumer.consume())
def test_consuming_from(self):
consumer = self.connection.Consumer()
consumer.queues[:] = [Queue('a'), Queue('b')]
self.assertFalse(consumer.consuming_from(Queue('c')))
self.assertFalse(consumer.consuming_from('c'))
self.assertTrue(consumer.consuming_from(Queue('a')))
self.assertTrue(consumer.consuming_from(Queue('b')))
self.assertTrue(consumer.consuming_from('b'))
def test_receive_callback_without_m2p(self):
channel = self.connection.channel()
c = channel.Consumer()
m2p = getattr(channel, 'message_to_python')
channel.message_to_python = None
try:
message = Mock()
message.decode.return_value = 'Hello'
recv = c.receive = Mock()
c._receive_callback(message)
recv.assert_called_with('Hello', message)
finally:
channel.message_to_python = m2p
def test_set_callbacks(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
callbacks = [lambda x, y: x, lambda x, y: x]
consumer = Consumer(channel,
queue,
auto_declare=True,
callbacks=callbacks)
self.assertEqual(consumer.callbacks, callbacks)
def test_auto_declare(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.consume()
consumer.consume() # twice is a noop
self.assertIsNot(consumer.queues[0], queue)
self.assertTrue(consumer.queues[0].is_bound)
self.assertTrue(consumer.queues[0].exchange.is_bound)
self.assertIsNot(consumer.queues[0].exchange, self.exchange)
for meth in ('exchange_declare', 'queue_declare', 'queue_bind',
'basic_consume'):
self.assertIn(meth, channel)
self.assertEqual(channel.called.count('basic_consume'), 1)
self.assertTrue(consumer._active_tags)
consumer.cancel_by_queue(queue.name)
consumer.cancel_by_queue(queue.name)
self.assertFalse(consumer._active_tags)
def test_manual_declare(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=False)
self.assertIsNot(consumer.queues[0], queue)
self.assertTrue(consumer.queues[0].is_bound)
self.assertTrue(consumer.queues[0].exchange.is_bound)
self.assertIsNot(consumer.queues[0].exchange, self.exchange)
for meth in ('exchange_declare', 'queue_declare', 'basic_consume'):
self.assertNotIn(meth, channel)
consumer.declare()
for meth in ('exchange_declare', 'queue_declare', 'queue_bind'):
self.assertIn(meth, channel)
self.assertNotIn('basic_consume', channel)
consumer.consume()
self.assertIn('basic_consume', channel)
def test_consume__cancel(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.consume()
consumer.cancel()
self.assertIn('basic_cancel', channel)
self.assertFalse(consumer._active_tags)
def test___enter____exit__(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
context = consumer.__enter__()
self.assertIs(context, consumer)
self.assertTrue(consumer._active_tags)
res = consumer.__exit__(None, None, None)
self.assertFalse(res)
self.assertIn('basic_cancel', channel)
self.assertFalse(consumer._active_tags)
def test_flow(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.flow(False)
self.assertIn('flow', channel)
def test_qos(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.qos(30, 10, False)
self.assertIn('basic_qos', channel)
def test_purge(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
b2 = Queue('qname2', self.exchange, 'rkey')
b3 = Queue('qname3', self.exchange, 'rkey')
b4 = Queue('qname4', self.exchange, 'rkey')
consumer = Consumer(channel, [b1, b2, b3, b4], auto_declare=True)
consumer.purge()
self.assertEqual(channel.called.count('queue_purge'), 4)
def test_multiple_queues(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
b2 = Queue('qname2', self.exchange, 'rkey')
b3 = Queue('qname3', self.exchange, 'rkey')
b4 = Queue('qname4', self.exchange, 'rkey')
consumer = Consumer(channel, [b1, b2, b3, b4])
consumer.consume()
self.assertEqual(channel.called.count('exchange_declare'), 4)
self.assertEqual(channel.called.count('queue_declare'), 4)
self.assertEqual(channel.called.count('queue_bind'), 4)
self.assertEqual(channel.called.count('basic_consume'), 4)
self.assertEqual(len(consumer._active_tags), 4)
consumer.cancel()
self.assertEqual(channel.called.count('basic_cancel'), 4)
self.assertFalse(len(consumer._active_tags))
def test_receive_callback(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
received = []
def callback(message_data, message):
received.append(message_data)
message.ack()
message.payload # trigger cache
consumer.register_callback(callback)
consumer._receive_callback({u'foo': u'bar'})
self.assertIn('basic_ack', channel)
self.assertIn('message_to_python', channel)
self.assertEqual(received[0], {u'foo': u'bar'})
def test_basic_ack_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.ack()
message.ack()
consumer.register_callback(callback)
with self.assertRaises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
def test_basic_reject(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.reject()
consumer.register_callback(callback)
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_reject', channel)
def test_basic_reject_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.reject()
message.reject()
consumer.register_callback(callback)
with self.assertRaises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_reject', channel)
def test_basic_reject__requeue(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.requeue()
consumer.register_callback(callback)
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_reject:requeue', channel)
def test_basic_reject__requeue_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.requeue()
message.requeue()
consumer.register_callback(callback)
with self.assertRaises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_reject:requeue', channel)
def test_receive_without_callbacks_raises(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
with self.assertRaises(NotImplementedError):
consumer.receive(1, 2)
def test_decode_error(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
consumer.channel.throw_decode_error = True
with self.assertRaises(ValueError):
consumer._receive_callback({'foo': 'bar'})
def test_on_decode_error_callback(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
thrown = []
def on_decode_error(msg, exc):
thrown.append((msg.body, exc))
consumer = Consumer(channel, [b1], on_decode_error=on_decode_error)
consumer.channel.throw_decode_error = True
consumer._receive_callback({'foo': 'bar'})
self.assertTrue(thrown)
m, exc = thrown[0]
self.assertEqual(anyjson.loads(m), {'foo': 'bar'})
self.assertIsInstance(exc, ValueError)
def test_recover(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
consumer.recover()
self.assertIn('basic_recover', channel)
def test_revive(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
channel2 = self.connection.channel()
consumer.revive(channel2)
self.assertIs(consumer.channel, channel2)
self.assertIs(consumer.queues[0].channel, channel2)
self.assertIs(consumer.queues[0].exchange.channel, channel2)
def test__repr__(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
self.assertTrue(repr(Consumer(channel, [b1])))
def test_connection_property_handles_AttributeError(self):
p = self.connection.Consumer()
p.channel = object()
self.assertIsNone(p.connection)
class Amqp(Thread):
def __init__(self,
host="localhost",
port=5672,
userid="guest",
password="******",
virtual_host="canopsis",
exchange_name="canopsis",
logging_name="Amqp",
logging_level=INFO,
read_config_file=True,
auto_connect=True,
on_ready=None,
max_retries=5):
super(Amqp, self).__init__()
self.logger = getLogger(logging_name)
self.host = host
self.port = port
self.userid = userid
self.password = password
self.virtual_host = virtual_host
self.exchange_name = exchange_name
self.logging_level = logging_level
if read_config_file:
self.read_config("amqp")
self.amqp_uri = "amqp://{0}:{1}@{2}:{3}/{4}".format(
self.userid, self.password, self.host, self.port,
self.virtual_host)
self.logger.setLevel(logging_level)
# Event sent try count before event drop in case of connection problem
if max_retries != 5:
self.logger.info('Custom retries value : {} {}'.format(
max_retries, type(max_retries)))
self.max_retries = max_retries
self.exchange_name_events = exchange_name + ".events"
self.exchange_name_alerts = exchange_name + ".alerts"
self.exchange_name_incidents = exchange_name + ".incidents"
self.chan = None
self.conn = None
self.connected = False
self.on_ready = on_ready
self.RUN = True
self.exchanges = {}
self.queues = {}
self.producers = None
self.paused = False
self.connection_errors = (ConnectionError, error, IOError, OSError)
# Create exchange
self.logger.debug("Create exchanges object")
for exchange_name in [
self.exchange_name, self.exchange_name_events,
self.exchange_name_alerts, self.exchange_name_incidents
]:
self.logger.debug(' + {}'.format(exchange_name))
self.get_exchange(exchange_name)
if auto_connect:
self.connect()
self.logger.debug("Object canamqp initialized")
def run(self):
"""
main thread loop
- connects to rabbit
- calls drain_events
- disconnects on error
"""
self.logger.debug("Start thread ...")
reconnect = False
while self.RUN:
self.connect()
if self.connected:
self.init_queue(reconnect=reconnect)
self.logger.debug("Drain events ...")
while self.RUN:
try:
if not self.paused:
self.conn.drain_events(timeout=0.5)
else:
sleep(0.5)
except KombuSerializationError as exc:
self.logger.error(
"Kombu serialization error: invalid message "
"received: {}".format(exc))
except timeout:
pass
except self.connection_errors as err:
self.logger.error(
"Connection error ! ({})".format(err))
break
except KombuSerializationError as exc:
self.logger.error(
"Kombu serialization error: invalid message "
"received: {}".format(exc))
except Exception as err:
self.logger.error("Error: {} ({})".format(
err, type(err)))
print_exc(file=stdout)
break
self.disconnect()
if self.RUN:
self.logger.error(
'Connection lost, try to reconnect in few seconds ...')
reconnect = True
self.wait_connection(timeout=5)
self.logger.debug("End of thread ...")
def stop(self):
self.logger.debug("Stop thread ...")
self.RUN = False
def connect(self):
"""
Create the connection
Inits the producers
Init the only channel
Declares exchanges
"""
if not self.connected:
self.logger.info("Connect to AMQP Broker (%s:%s)" %
(self.host, self.port))
self.conn = Connection(self.amqp_uri)
try:
self.logger.debug(" + Connect")
self.conn.connect()
self.logger.info("Connected to AMQP Broker.")
self.producers = pools.Producers(limit=10)
self.connected = True
except Exception as err:
self.conn.release()
self.logger.error("Impossible to connect ({})".format(err))
if self.connected:
self.logger.debug(" + Open channel")
try:
self.chan = self.conn.channel()
self.logger.info("Channel openned. Ready to send messages")
try:
# Declare exchange
self.logger.debug("Declare exchanges")
for exchange_name in self.exchanges:
self.logger.debug(" + {}".format(exchange_name))
self.exchanges[exchange_name](self.chan).declare()
except Exception as err:
self.logger.error(
"Impossible to declare exchange ({})".format(err))
except Exception as err:
self.logger.error(err)
else:
self.logger.debug("Already connected")
def get_exchange(self, name):
"""
Returns an exchange if stored in self.exchanges.
Otherwise, creates it and returns it
:param string name: name of the exchange to get/create
:rtype: Exchange|None
"""
if name:
try:
return self.exchanges[name]
except Exception:
if name == "amq.direct":
self.exchanges[name] = Exchange(name,
"direct",
durable=True)
else:
self.exchanges[name] = Exchange(name,
"topic",
durable=True,
auto_delete=False)
return self.exchanges[name]
else:
return None
def init_queue(self, reconnect=False):
"""
Loads queue settings
Creates queues and attaches the same channel to each of them
Binds queues to exchange
Revives or creates consumers
calls consume
"""
if self.queues:
self.logger.debug("Init queues")
for queue_name in self.queues.keys():
self.logger.debug(" + {}".format(queue_name))
qsettings = self.queues[queue_name]
if not qsettings['queue']:
self.logger.debug(" + Create queue")
# copy list
routing_keys = list(qsettings['routing_keys'])
routing_key = None
if len(routing_keys):
routing_key = routing_keys[0]
routing_keys = routing_keys[1:]
exchange = self.get_exchange(qsettings['exchange_name'])
if qsettings['exchange_name'] == "amq.direct" \
and not routing_key:
routing_key = queue_name
self.logger.debug("exchange: '{}', exclusive: {},"
" auto_delete: {},no_ack: {}".format(
qsettings['exchange_name'],
qsettings['exclusive'],
qsettings['auto_delete'],
qsettings['no_ack']))
qsettings['queue'] = Queue(
queue_name,
exchange=exchange,
routing_key=routing_key,
exclusive=qsettings['exclusive'],
auto_delete=qsettings['auto_delete'],
no_ack=qsettings['no_ack'],
channel=self.conn.channel())
qsettings['queue'].declare()
if len(routing_keys):
self.logger.debug(" + Bind on all routing keys")
for routing_key in routing_keys:
self.logger.debug(
" + routing_key: '{}'".format(routing_key))
try:
qsettings['queue'].bind_to(
exchange=exchange, routing_key=routing_key)
except Exception:
self.logger.error(
"You need upgrade your Kombu version ({})".
format(__version__))
if qsettings['consumer'] and not reconnect:
qsettings['consumer'].revive(self.chan)
elif not qsettings['consumer'] or reconnect:
self.logger.debug(" + Create Consumer")
qsettings['consumer'] = self.conn.Consumer(
qsettings['queue'], callbacks=[qsettings['callback']])
self.logger.debug(" + Consume queue")
qsettings['consumer'].consume()
if self.on_ready:
self.on_ready()
else:
self.logger.info('Queue already inited')
def add_queue(self,
queue_name,
routing_keys,
callback,
exchange_name=None,
no_ack=True,
exclusive=False,
auto_delete=True):
"""
Initializes the queue configuration
maps the callback on the queue
"""
c_routing_keys = []
if not isinstance(routing_keys, list):
if isinstance(routing_keys, basestring):
c_routing_keys = [routing_keys]
else:
c_routing_keys = routing_keys
# aka if rk is nor a list nor a basetring, leave it empty
if not exchange_name:
exchange_name = self.exchange_name
self.queues[queue_name] = {
'queue': False,
'consumer': False,
'queue_name': queue_name,
'routing_keys': c_routing_keys,
'callback': callback,
'exchange_name': exchange_name,
'no_ack': no_ack,
'exclusive': exclusive,
'auto_delete': auto_delete
}
def publish(self,
msg,
routing_key,
exchange_name=None,
serializer="json",
compression=None,
content_type=None,
content_encoding=None):
"""
Tries to publish an event
In case of failure, tries to reconnect and retry until (self.max_retries)
:returns: operation success status
:rtype: bool
"""
self.logger.warning("Publishing from old.rabbitmq.Amqp is deprecated")
operation_success = False
retries = 0
while not operation_success and retries < self.max_retries:
retries += 1
if self.connected:
if not exchange_name:
exchange_name = self.exchange_name
with self.producers[self.conn].acquire(block=True) as producer:
try:
_msg = msg.copy()
Amqp._clean_msg_for_serialization(_msg)
exchange = self.get_exchange(
exchange_name.encode('utf-8'))
producer.publish(_msg,
serializer=serializer,
compression=compression,
routing_key=routing_key,
exchange=exchange)
self.logger.debug('publish {} in exchange {}'.format(
routing_key, exchange_name))
operation_success = True
except AmqpStructError:
self.logger.warning(
'Malformed message: routing key is too long. '
'Cancelling message')
return False
except Exception:
self.logger.error(' + Impossible to send {}'.format(
traceback.format_exc()))
self.disconnect()
self.connect()
self.init_queue(reconnect=False)
else:
self.logger.error('Not connected ... try reconnecting')
self.connect()
if not operation_success:
# Event and it's information are buffered until next send retry
self.logger.info('Retry count {}'.format(retries))
if not operation_success:
# Event and it's information are buffered until next send retry
self.logger.error(
'Too much retries for event {}, give up'.format(routing_key))
return operation_success
@staticmethod
def _clean_msg_for_serialization(msg):
from bson import objectid
for key in msg:
if isinstance(msg[key], objectid.ObjectId):
msg[key] = str(msg[key])
def cancel_queues(self):
if self.connected:
for queue_name in self.queues.keys():
if self.queues[queue_name]['consumer']:
self.logger.debug(
" + Cancel consumer on {}".format(queue_name))
try:
self.queues[queue_name]['consumer'].cancel()
except Exception:
pass
del (self.queues[queue_name]['consumer'])
self.queues[queue_name]['consumer'] = False
del (self.queues[queue_name]['queue'])
self.queues[queue_name]['queue'] = False
def disconnect(self):
if self.connected:
self.logger.info("Disconnect from AMQP Broker")
self.cancel_queues()
# Force producers closing to permit a clean reconnect after
# ... especially on timeout errors
self.producers[self.conn].force_close_all()
for exchange in self.exchanges:
del exchange
self.exchanges = {}
try:
pools.reset()
except Exception as err:
self.logger.error(
"Impossible to reset kombu pools: {} ({})".format(
err, type(err)))
try:
self.conn.release()
del self.conn
except Exception as err:
self.logger.error(
"Impossible to release connection: {} ({})".format(
err, type(err)))
self.connected = False
def wait_connection(self, timeout=5):
i = 0
while self.RUN and not self.connected and i < (timeout * 2):
sleep(0.5)
i += 1
def read_config(self, name):
filename = join(root_path, 'etc', '{0}.conf'.format(name))
import ConfigParser
self.config = ConfigParser.RawConfigParser()
try:
self.config.read(filename)
section = 'master'
self.host = self.config.get(section, "host")
self.port = self.config.getint(section, "port")
self.userid = self.config.get(section, "userid")
self.password = self.config.get(section, "password")
self.virtual_host = self.config.get(section, "virtual_host")
self.exchange_name = self.config.get(section, "exchange_name")
except Exception as err:
self.logger.error(
"Can't to load configurations ({}), use default ...".format(
err))
def __del__(self):
self.stop()
class AppCrawlerQueue(object):
"""
crawler result put into the rabbit mq
"""
def __init__(self, addr, exchange, routing_key, queue_name, logger=None):
self._exch = Exchange(exchange)
self._addr = addr
self._routing_key = routing_key
self._queue_name = queue_name
self._queue = Queue(queue_name, self._exch, self._routing_key)
self._conn = Connection(addr)
self._task = None
self._logger = logger
self._producer = None
def setConsumer(self):
self._consumer = self._conn.Consumer(self._queue,
callbacks=[self.processTask])
self._consumer.qos(prefetch_count=1)
self._consumer.consume()
def setProducer(self):
if not self._producer:
self._producer = Producer(self._conn)
def reConn(self):
self._conn.release()
self._conn = Connection(self._addr)
def processTask(self, body, message):
try:
if not body:
message.ack()
return
self._task = body
message.ack()
except:
pass
def getTask(self):
self._task = None
try:
self._conn.drain_events(timeout=1)
except socket.timeout:
pass
except:
self._logger.error('unknown error[%s]' % traceback.format_exc())
pass
finally:
time.sleep(0.1)
return self._task
def setTask(self, task):
result = task
for i in range(5):
try:
self._producer.publish(result,
exchang=self._exch,
declare=[self._queue],
routing_key=self._queue_name)
break
except:
self._logger.error('send info error[%s]' %
traceback.format_exc())
time.sleep(10)
self.reConn()
self.setProducer()
continue
def __del__(self):
self._conn.release()
class test_Consumer(Case):
def setUp(self):
self.connection = Connection(transport=Transport)
self.connection.connect()
self.assertTrue(self.connection.connection.connected)
self.exchange = Exchange('foo', 'direct')
def test_accept(self):
a = Consumer(self.connection)
self.assertIsNone(a.accept)
b = Consumer(self.connection, accept=['json', 'pickle'])
self.assertSetEqual(
b.accept,
set(['application/json', 'application/x-python-serialize']),
)
c = Consumer(self.connection, accept=b.accept)
self.assertSetEqual(b.accept, c.accept)
def test_enter_exit_cancel_raises(self):
c = Consumer(self.connection)
c.cancel = Mock(name='Consumer.cancel')
c.cancel.side_effect = KeyError('foo')
with c:
pass
c.cancel.assert_called_with()
def test_receive_callback_accept(self):
message = Mock(name='Message')
message.errors = []
callback = Mock(name='on_message')
c = Consumer(self.connection, accept=['json'], on_message=callback)
c.on_decode_error = None
c.channel = Mock(name='channel')
c.channel.message_to_python = None
c._receive_callback(message)
callback.assert_called_with(message)
self.assertSetEqual(message.accept, c.accept)
def test_accept__content_disallowed(self):
conn = Connection('memory://')
q = Queue('foo', exchange=self.exchange)
p = conn.Producer()
p.publish(
{'complex': object()},
declare=[q],
exchange=self.exchange,
serializer='pickle',
)
callback = Mock(name='callback')
with conn.Consumer(queues=[q], callbacks=[callback]) as consumer:
with self.assertRaises(consumer.ContentDisallowed):
conn.drain_events(timeout=1)
self.assertFalse(callback.called)
def test_accept__content_allowed(self):
conn = Connection('memory://')
q = Queue('foo', exchange=self.exchange)
p = conn.Producer()
p.publish(
{'complex': object()},
declare=[q],
exchange=self.exchange,
serializer='pickle',
)
callback = Mock(name='callback')
with conn.Consumer(queues=[q], accept=['pickle'],
callbacks=[callback]):
conn.drain_events(timeout=1)
self.assertTrue(callback.called)
body, message = callback.call_args[0]
self.assertTrue(body['complex'])
def test_set_no_channel(self):
c = Consumer(None)
self.assertIsNone(c.channel)
c.revive(Mock())
self.assertTrue(c.channel)
def test_set_no_ack(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True, no_ack=True)
self.assertTrue(consumer.no_ack)
def test_add_queue_when_auto_declare(self):
consumer = self.connection.Consumer(auto_declare=True)
q = Mock()
q.return_value = q
consumer.add_queue(q)
self.assertIn(q, consumer.queues)
q.declare.assert_called_with()
def test_add_queue_when_not_auto_declare(self):
consumer = self.connection.Consumer(auto_declare=False)
q = Mock()
q.return_value = q
consumer.add_queue(q)
self.assertIn(q, consumer.queues)
self.assertFalse(q.declare.call_count)
def test_consume_without_queues_returns(self):
consumer = self.connection.Consumer()
consumer.queues[:] = []
self.assertIsNone(consumer.consume())
def test_consuming_from(self):
consumer = self.connection.Consumer()
consumer.queues[:] = [Queue('a'), Queue('b'), Queue('d')]
consumer._active_tags = {'a': 1, 'b': 2}
self.assertFalse(consumer.consuming_from(Queue('c')))
self.assertFalse(consumer.consuming_from('c'))
self.assertFalse(consumer.consuming_from(Queue('d')))
self.assertFalse(consumer.consuming_from('d'))
self.assertTrue(consumer.consuming_from(Queue('a')))
self.assertTrue(consumer.consuming_from(Queue('b')))
self.assertTrue(consumer.consuming_from('b'))
def test_receive_callback_without_m2p(self):
channel = self.connection.channel()
c = channel.Consumer()
m2p = getattr(channel, 'message_to_python')
channel.message_to_python = None
try:
message = Mock()
message.errors = []
message.decode.return_value = 'Hello'
recv = c.receive = Mock()
c._receive_callback(message)
recv.assert_called_with('Hello', message)
finally:
channel.message_to_python = m2p
def test_set_callbacks(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
callbacks = [lambda x, y: x, lambda x, y: x]
consumer = Consumer(channel,
queue,
auto_declare=True,
callbacks=callbacks)
self.assertEqual(consumer.callbacks, callbacks)
def test_auto_declare(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.consume()
consumer.consume() # twice is a noop
self.assertIsNot(consumer.queues[0], queue)
self.assertTrue(consumer.queues[0].is_bound)
self.assertTrue(consumer.queues[0].exchange.is_bound)
self.assertIsNot(consumer.queues[0].exchange, self.exchange)
for meth in ('exchange_declare', 'queue_declare', 'queue_bind',
'basic_consume'):
self.assertIn(meth, channel)
self.assertEqual(channel.called.count('basic_consume'), 1)
self.assertTrue(consumer._active_tags)
consumer.cancel_by_queue(queue.name)
consumer.cancel_by_queue(queue.name)
self.assertFalse(consumer._active_tags)
def test_consumer_tag_prefix(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, tag_prefix='consumer_')
consumer.consume()
self.assertTrue(
consumer._active_tags[queue.name].startswith('consumer_'), )
def test_manual_declare(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=False)
self.assertIsNot(consumer.queues[0], queue)
self.assertTrue(consumer.queues[0].is_bound)
self.assertTrue(consumer.queues[0].exchange.is_bound)
self.assertIsNot(consumer.queues[0].exchange, self.exchange)
for meth in ('exchange_declare', 'queue_declare', 'basic_consume'):
self.assertNotIn(meth, channel)
consumer.declare()
for meth in ('exchange_declare', 'queue_declare', 'queue_bind'):
self.assertIn(meth, channel)
self.assertNotIn('basic_consume', channel)
consumer.consume()
self.assertIn('basic_consume', channel)
def test_consume__cancel(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.consume()
consumer.cancel()
self.assertIn('basic_cancel', channel)
self.assertFalse(consumer._active_tags)
def test___enter____exit__(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
context = consumer.__enter__()
self.assertIs(context, consumer)
self.assertTrue(consumer._active_tags)
res = consumer.__exit__(None, None, None)
self.assertFalse(res)
self.assertIn('basic_cancel', channel)
self.assertFalse(consumer._active_tags)
def test_flow(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.flow(False)
self.assertIn('flow', channel)
def test_qos(self):
channel = self.connection.channel()
queue = Queue('qname', self.exchange, 'rkey')
consumer = Consumer(channel, queue, auto_declare=True)
consumer.qos(30, 10, False)
self.assertIn('basic_qos', channel)
def test_purge(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
b2 = Queue('qname2', self.exchange, 'rkey')
b3 = Queue('qname3', self.exchange, 'rkey')
b4 = Queue('qname4', self.exchange, 'rkey')
consumer = Consumer(channel, [b1, b2, b3, b4], auto_declare=True)
consumer.purge()
self.assertEqual(channel.called.count('queue_purge'), 4)
def test_multiple_queues(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
b2 = Queue('qname2', self.exchange, 'rkey')
b3 = Queue('qname3', self.exchange, 'rkey')
b4 = Queue('qname4', self.exchange, 'rkey')
consumer = Consumer(channel, [b1, b2, b3, b4])
consumer.consume()
self.assertEqual(channel.called.count('exchange_declare'), 4)
self.assertEqual(channel.called.count('queue_declare'), 4)
self.assertEqual(channel.called.count('queue_bind'), 4)
self.assertEqual(channel.called.count('basic_consume'), 4)
self.assertEqual(len(consumer._active_tags), 4)
consumer.cancel()
self.assertEqual(channel.called.count('basic_cancel'), 4)
self.assertFalse(len(consumer._active_tags))
def test_receive_callback(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
received = []
def callback(message_data, message):
received.append(message_data)
message.ack()
message.payload # trigger cache
consumer.register_callback(callback)
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_ack', channel)
self.assertIn('message_to_python', channel)
self.assertEqual(received[0], {'foo': 'bar'})
def test_basic_ack_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.ack()
message.ack()
consumer.register_callback(callback)
with self.assertRaises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
def test_basic_reject(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.reject()
consumer.register_callback(callback)
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_reject', channel)
def test_basic_reject_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.reject()
message.reject()
consumer.register_callback(callback)
with self.assertRaises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_reject', channel)
def test_basic_reject__requeue(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.requeue()
consumer.register_callback(callback)
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_reject:requeue', channel)
def test_basic_reject__requeue_twice(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
def callback(message_data, message):
message.requeue()
message.requeue()
consumer.register_callback(callback)
with self.assertRaises(MessageStateError):
consumer._receive_callback({'foo': 'bar'})
self.assertIn('basic_reject:requeue', channel)
def test_receive_without_callbacks_raises(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
with self.assertRaises(NotImplementedError):
consumer.receive(1, 2)
def test_decode_error(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
consumer.channel.throw_decode_error = True
with self.assertRaises(ValueError):
consumer._receive_callback({'foo': 'bar'})
def test_on_decode_error_callback(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
thrown = []
def on_decode_error(msg, exc):
thrown.append((msg.body, exc))
consumer = Consumer(channel, [b1], on_decode_error=on_decode_error)
consumer.channel.throw_decode_error = True
consumer._receive_callback({'foo': 'bar'})
self.assertTrue(thrown)
m, exc = thrown[0]
self.assertEqual(anyjson.loads(m), {'foo': 'bar'})
self.assertIsInstance(exc, ValueError)
def test_recover(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
consumer.recover()
self.assertIn('basic_recover', channel)
def test_revive(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
consumer = Consumer(channel, [b1])
channel2 = self.connection.channel()
consumer.revive(channel2)
self.assertIs(consumer.channel, channel2)
self.assertIs(consumer.queues[0].channel, channel2)
self.assertIs(consumer.queues[0].exchange.channel, channel2)
def test__repr__(self):
channel = self.connection.channel()
b1 = Queue('qname1', self.exchange, 'rkey')
self.assertTrue(repr(Consumer(channel, [b1])))
def test_connection_property_handles_AttributeError(self):
p = self.connection.Consumer()
p.channel = object()
self.assertIsNone(p.connection)
class test_MemoryTransport:
def setup(self):
self.c = Connection(transport='memory')
self.e = Exchange('test_transport_memory')
self.q = Queue('test_transport_memory',
exchange=self.e,
routing_key='test_transport_memory')
self.q2 = Queue('test_transport_memory2',
exchange=self.e,
routing_key='test_transport_memory2')
self.fanout = Exchange('test_transport_memory_fanout', type='fanout')
self.q3 = Queue('test_transport_memory_fanout1', exchange=self.fanout)
self.q4 = Queue('test_transport_memory_fanout2', exchange=self.fanout)
def test_driver_version(self):
assert self.c.transport.driver_version()
def test_produce_consume_noack(self):
channel = self.c.channel()
producer = Producer(channel, self.e)
consumer = Consumer(channel, self.q, no_ack=True)
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory')
_received = []
def callback(message_data, message):
_received.append(message)
consumer.register_callback(callback)
consumer.consume()
while 1:
if len(_received) == 10:
break
self.c.drain_events()
assert len(_received) == 10
def test_produce_consume_fanout(self):
producer = self.c.Producer()
consumer = self.c.Consumer([self.q3, self.q4])
producer.publish(
{'hello': 'world'},
declare=consumer.queues,
exchange=self.fanout,
)
assert self.q3(self.c).get().payload == {'hello': 'world'}
assert self.q4(self.c).get().payload == {'hello': 'world'}
assert self.q3(self.c).get() is None
assert self.q4(self.c).get() is None
def test_produce_consume(self):
channel = self.c.channel()
producer = Producer(channel, self.e)
consumer1 = Consumer(channel, self.q)
consumer2 = Consumer(channel, self.q2)
self.q2(channel).declare()
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory')
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory2')
_received1 = []
_received2 = []
def callback1(message_data, message):
_received1.append(message)
message.ack()
def callback2(message_data, message):
_received2.append(message)
message.ack()
consumer1.register_callback(callback1)
consumer2.register_callback(callback2)
consumer1.consume()
consumer2.consume()
while 1:
if len(_received1) + len(_received2) == 20:
break
self.c.drain_events()
assert len(_received1) + len(_received2) == 20
# compression
producer.publish({'compressed': True},
routing_key='test_transport_memory',
compression='zlib')
m = self.q(channel).get()
assert m.payload == {'compressed': True}
# queue.delete
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory')
assert self.q(channel).get()
self.q(channel).delete()
self.q(channel).declare()
assert self.q(channel).get() is None
# queue.purge
for i in range(10):
producer.publish({'foo': i}, routing_key='test_transport_memory2')
assert self.q2(channel).get()
self.q2(channel).purge()
assert self.q2(channel).get() is None
def test_drain_events(self):
with pytest.raises(socket.timeout):
self.c.drain_events(timeout=0.1)
c1 = self.c.channel()
c2 = self.c.channel()
with pytest.raises(socket.timeout):
self.c.drain_events(timeout=0.1)
del (c1) # so pyflakes doesn't complain.
del (c2)
def test_drain_events_unregistered_queue(self):
c1 = self.c.channel()
producer = self.c.Producer()
consumer = self.c.Consumer([self.q2])
producer.publish(
{'hello': 'world'},
declare=consumer.queues,
routing_key=self.q2.routing_key,
exchange=self.q2.exchange,
)
message = consumer.queues[0].get()._raw
class Cycle:
def get(self, callback, timeout=None):
return (message, 'foo'), c1
self.c.transport.cycle = Cycle()
self.c.drain_events()
def test_queue_for(self):
chan = self.c.channel()
chan.queues.clear()
x = chan._queue_for('foo')
assert x
assert chan._queue_for('foo') is x
# see the issue
# https://github.com/celery/kombu/issues/1050
def test_producer_on_return(self):
def on_return(_exception, _exchange, _routing_key, _message):
pass
channel = self.c.channel()
producer = Producer(channel, on_return=on_return)
consumer = self.c.Consumer([self.q3])
producer.publish(
{'hello': 'on return'},
declare=consumer.queues,
exchange=self.fanout,
)
assert self.q3(self.c).get().payload == {'hello': 'on return'}
assert self.q3(self.c).get() is None
