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from __future__ import annotations
from unittest.mock import Mock
import pytest
from kombu import Connection, Producer, pools
from kombu.connection import ConnectionPool, PooledConnection
from kombu.utils.collections import eqhash
class test_ProducerPool:
Pool = pools.ProducerPool
class MyPool(pools.ProducerPool):
def __init__(self, *args, **kwargs):
self.instance = Mock()
super().__init__(*args, **kwargs)
def Producer(self, connection):
return self.instance
def setup_method(self):
self.connections = Mock()
self.pool = self.Pool(self.connections, limit=10)
def test_close_resource(self):
self.pool.close_resource(Mock(name='resource'))
def test_releases_connection_when_Producer_raises(self):
self.pool.Producer = Mock()
self.pool.Producer.side_effect = IOError()
acq = self.pool._acquire_connection = Mock()
conn = acq.return_value = Mock()
with pytest.raises(IOError):
self.pool.create_producer()
conn.release.assert_called_with()
def test_exception_during_connection_use(self):
"""Tests that the connection is closed in case of an exception."""
with pytest.raises(IOError):
with self.pool.acquire() as producer:
producer.__connection__ = Mock(spec=PooledConnection)
producer.__connection__._pool = self.connections
producer.publish = Mock()
producer.publish.side_effect = IOError()
producer.publish("test data")
self.connections.replace.assert_called_once()
def test_prepare_release_connection_on_error(self):
pp = Mock()
p = pp.return_value = Mock()
p.revive.side_effect = IOError()
acq = self.pool._acquire_connection = Mock()
conn = acq.return_value = Mock()
p._channel = None
with pytest.raises(IOError):
self.pool.prepare(pp)
conn.release.assert_called_with()
def test_release_releases_connection(self):
p = Mock()
p.__connection__ = Mock()
self.pool.release(p)
p.__connection__.release.assert_called_with()
p.__connection__ = None
self.pool.release(p)
def test_init(self):
assert self.pool.connections is self.connections
def test_Producer(self):
assert isinstance(self.pool.Producer(Mock()), Producer)
def test_acquire_connection(self):
self.pool._acquire_connection()
self.connections.acquire.assert_called_with(block=True)
def test_new(self):
promise = self.pool.new()
producer = promise()
assert isinstance(producer, Producer)
self.connections.acquire.assert_called_with(block=True)
def test_setup_unlimited(self):
pool = self.Pool(self.connections, limit=None)
pool.setup()
assert not pool._resource.queue
def test_setup(self):
assert len(self.pool._resource.queue) == self.pool.limit
first = self.pool._resource.get_nowait()
producer = first()
assert isinstance(producer, Producer)
def test_prepare(self):
connection = self.connections.acquire.return_value = Mock()
pool = self.MyPool(self.connections, limit=10)
pool.instance._channel = None
first = pool._resource.get_nowait()
producer = pool.prepare(first)
self.connections.acquire.assert_called()
producer.revive.assert_called_with(connection)
def test_prepare_channel_already_created(self):
self.connections.acquire.return_value = Mock()
pool = self.MyPool(self.connections, limit=10)
pool.instance._channel = Mock()
first = pool._resource.get_nowait()
self.connections.acquire.reset()
producer = pool.prepare(first)
producer.revive.assert_not_called()
def test_prepare_not_callable(self):
x = Producer(Mock)
self.pool.prepare(x)
def test_release(self):
p = Mock()
p.channel = Mock()
p.__connection__ = Mock()
self.pool.release(p)
p.__connection__.release.assert_called_with()
assert p.channel is None
class test_PoolGroup:
Group = pools.PoolGroup
class MyGroup(pools.PoolGroup):
def create(self, resource, limit):
return resource, limit
def test_interface_create(self):
g = self.Group()
with pytest.raises(NotImplementedError):
g.create(Mock(), 10)
def test_getitem_using_global_limit(self):
g = self.MyGroup(limit=pools.use_global_limit)
res = g['foo']
assert res == ('foo', pools.get_limit())
def test_getitem_using_custom_limit(self):
g = self.MyGroup(limit=102456)
res = g['foo']
assert res == ('foo', 102456)
def test_delitem(self):
g = self.MyGroup()
g['foo']
del g['foo']
assert 'foo' not in g
def test_Connections(self):
conn = Connection('memory://')
p = pools.connections[conn]
assert p
assert isinstance(p, ConnectionPool)
assert p.connection is conn
assert p.limit == pools.get_limit()
def test_Producers(self):
conn = Connection('memory://')
p = pools.producers[conn]
assert p
assert isinstance(p, pools.ProducerPool)
assert p.connections is pools.connections[conn]
assert p.limit == p.connections.limit
assert p.limit == pools.get_limit()
def test_all_groups(self):
conn = Connection('memory://')
pools.connections[conn]
assert list(pools._all_pools())
def test_reset(self):
pools.reset()
class MyGroup(dict):
clear_called = False
def clear(self):
self.clear_called = True
p1 = pools.connections['foo'] = Mock()
g1 = MyGroup()
pools._groups.append(g1)
pools.reset()
p1.force_close_all.assert_called_with()
assert g1.clear_called
p1 = pools.connections['foo'] = Mock()
p1.force_close_all.side_effect = KeyError()
pools.reset()
def test_set_limit(self):
pools.reset()
pools.set_limit(34576)
limit = pools.get_limit()
assert limit == 34576
conn = Connection('memory://')
pool = pools.connections[conn]
with pool.acquire():
pools.set_limit(limit + 1)
assert pools.get_limit() == limit + 1
limit = pools.get_limit()
with pytest.raises(RuntimeError):
pools.set_limit(limit - 1)
pools.set_limit(limit - 1, force=True)
assert pools.get_limit() == limit - 1
pools.set_limit(pools.get_limit())
def test_remove_limit(self):
conn = Connection('memory://')
pool = pools.connections[conn]
pool.limit = 10
with pool.acquire():
pool.limit = 0
class test_fun_PoolGroup:
def test_connections_behavior(self):
c1u = 'memory://localhost:123'
c2u = 'memory://localhost:124'
c1 = Connection(c1u)
c2 = Connection(c2u)
c3 = Connection(c1u)
assert eqhash(c1) != eqhash(c2)
assert eqhash(c1) == eqhash(c3)
c4 = Connection(c1u, transport_options={'confirm_publish': True})
assert eqhash(c3) != eqhash(c4)
p1 = pools.connections[c1]
p2 = pools.connections[c2]
p3 = pools.connections[c3]
assert p1 is not p2
assert p1 is p3
r1 = p1.acquire()
assert p1._dirty
assert p3._dirty
assert not p2._dirty
r1.release()
assert not p1._dirty
assert not p3._dirty
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