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from pymemcache.client.hash import HashClient
from pymemcache.client.base import Client, PooledClient
from pymemcache.exceptions import MemcacheError, MemcacheUnknownError
from pymemcache import pool
from .test_client import ClientTestMixin, MockSocket
import unittest
import pytest
import mock
import socket
class TestHashClient(ClientTestMixin, unittest.TestCase):
def make_client_pool(self, hostname, mock_socket_values,
serializer=None, **kwargs):
mock_client = Client(hostname, serializer=serializer, **kwargs)
mock_client.sock = MockSocket(mock_socket_values)
client = PooledClient(hostname, serializer=serializer)
client.client_pool = pool.ObjectPool(lambda: mock_client)
return mock_client
def make_client(self, *mock_socket_values, **kwargs):
current_port = 11012
client = HashClient([], **kwargs)
ip = '127.0.0.1'
for vals in mock_socket_values:
s = '%s:%s' % (ip, current_port)
c = self.make_client_pool(
(ip, current_port),
vals,
**kwargs
)
client.clients[s] = c
client.hasher.add_node(s)
current_port += 1
return client
def test_setup_client_without_pooling(self):
with mock.patch('pymemcache.client.hash.Client') as internal_client:
client = HashClient([], timeout=999, key_prefix='foo_bar_baz')
client.add_server('127.0.0.1', '11211')
assert internal_client.call_args[0][0] == ('127.0.0.1', '11211')
kwargs = internal_client.call_args[1]
assert kwargs['timeout'] == 999
assert kwargs['key_prefix'] == 'foo_bar_baz'
def test_get_many_all_found(self):
client = self.make_client(*[
[b'STORED\r\n', b'VALUE key3 0 6\r\nvalue2\r\nEND\r\n', ],
[b'STORED\r\n', b'VALUE key1 0 6\r\nvalue1\r\nEND\r\n', ],
])
def get_clients(key):
if key == b'key3':
return client.clients['127.0.0.1:11012']
else:
return client.clients['127.0.0.1:11013']
client._get_client = get_clients
result = client.set(b'key1', b'value1', noreply=False)
result = client.set(b'key3', b'value2', noreply=False)
result = client.get_many([b'key1', b'key3'])
assert result == {b'key1': b'value1', b'key3': b'value2'}
def test_get_many_some_found(self):
client = self.make_client(*[
[b'END\r\n', ],
[b'STORED\r\n', b'VALUE key1 0 6\r\nvalue1\r\nEND\r\n', ],
])
def get_clients(key):
if key == b'key3':
return client.clients['127.0.0.1:11012']
else:
return client.clients['127.0.0.1:11013']
client._get_client = get_clients
result = client.set(b'key1', b'value1', noreply=False)
result = client.get_many([b'key1', b'key3'])
assert result == {b'key1': b'value1'}
def test_get_many_bad_server_data(self):
client = self.make_client(*[
[b'STORED\r\n', b'VAXLUE key3 0 6\r\nvalue2\r\nEND\r\n', ],
[b'STORED\r\n', b'VAXLUE key1 0 6\r\nvalue1\r\nEND\r\n', ],
])
def get_clients(key):
if key == b'key3':
return client.clients['127.0.0.1:11012']
else:
return client.clients['127.0.0.1:11013']
client._get_client = get_clients
with pytest.raises(MemcacheUnknownError):
client.set(b'key1', b'value1', noreply=False)
client.set(b'key3', b'value2', noreply=False)
client.get_many([b'key1', b'key3'])
def test_get_many_bad_server_data_ignore(self):
client = self.make_client(*[
[b'STORED\r\n', b'VAXLUE key3 0 6\r\nvalue2\r\nEND\r\n', ],
[b'STORED\r\n', b'VAXLUE key1 0 6\r\nvalue1\r\nEND\r\n', ],
], ignore_exc=True)
def get_clients(key):
if key == b'key3':
return client.clients['127.0.0.1:11012']
else:
return client.clients['127.0.0.1:11013']
client._get_client = get_clients
client.set(b'key1', b'value1', noreply=False)
client.set(b'key3', b'value2', noreply=False)
result = client.get_many([b'key1', b'key3'])
assert result == {}
def test_gets_many(self):
client = self.make_client(*[
[b'STORED\r\n', b'VALUE key3 0 6 1\r\nvalue2\r\nEND\r\n', ],
[b'STORED\r\n', b'VALUE key1 0 6 1\r\nvalue1\r\nEND\r\n', ],
])
def get_clients(key):
if key == b'key3':
return client.clients['127.0.0.1:11012']
else:
return client.clients['127.0.0.1:11013']
client._get_client = get_clients
assert client.set(b'key1', b'value1', noreply=False) is True
assert client.set(b'key3', b'value2', noreply=False) is True
result = client.gets_many([b'key1', b'key3'])
assert (result ==
{b'key1': (b'value1', b'1'), b'key3': (b'value2', b'1')})
def test_no_servers_left(self):
from pymemcache.client.hash import HashClient
client = HashClient(
[], use_pooling=True,
ignore_exc=True,
timeout=1, connect_timeout=1
)
hashed_client = client._get_client('foo')
assert hashed_client is None
def test_no_servers_left_raise_exception(self):
from pymemcache.client.hash import HashClient
client = HashClient(
[], use_pooling=True,
ignore_exc=False,
timeout=1, connect_timeout=1
)
with pytest.raises(MemcacheError) as e:
client._get_client('foo')
assert str(e.value) == 'All servers seem to be down right now'
def test_unavailable_servers_zero_retry_raise_exception(self):
from pymemcache.client.hash import HashClient
client = HashClient(
[('example.com', 11211)], use_pooling=True,
ignore_exc=False,
retry_attempts=0, timeout=1, connect_timeout=1
)
with pytest.raises(socket.error):
client.get('foo')
def test_no_servers_left_with_commands_return_default_value(self):
from pymemcache.client.hash import HashClient
client = HashClient(
[], use_pooling=True,
ignore_exc=True,
timeout=1, connect_timeout=1
)
result = client.get('foo')
assert result is None
result = client.set('foo', 'bar')
assert result is False
def test_no_servers_left_with_set_many(self):
from pymemcache.client.hash import HashClient
client = HashClient(
[], use_pooling=True,
ignore_exc=True,
timeout=1, connect_timeout=1
)
result = client.set_many({'foo': 'bar'})
assert result is False
def test_no_servers_left_with_get_many(self):
from pymemcache.client.hash import HashClient
client = HashClient(
[], use_pooling=True,
ignore_exc=True,
timeout=1, connect_timeout=1
)
result = client.get_many(['foo', 'bar'])
assert result == {'foo': False, 'bar': False}
# TODO: Test failover logic
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