def test_add_replace(host, port, socket_module):
client = Client((host, port), socket_module=socket_module)
client.flush_all()
result = client.add(b'key', b'value', noreply=False)
assert result is True
result = client.get(b'key')
assert result == b'value'
result = client.add(b'key', b'value2', noreply=False)
assert result is False
result = client.get(b'key')
assert result == b'value'
result = client.replace(b'key1', b'value1', noreply=False)
assert result is False
result = client.get(b'key1')
assert result is None
result = client.replace(b'key', b'value2', noreply=False)
assert result is True
result = client.get(b'key')
assert result == b'value2'
def add_replace_test(host, port, socket_module):
client = Client((host, port), socket_module=socket_module)
client.flush_all()
result = client.add(b'key', b'value', noreply=False)
tools.assert_equal(result, True)
result = client.get(b'key')
tools.assert_equal(result, b'value')
result = client.add(b'key', b'value2', noreply=False)
tools.assert_equal(result, False)
result = client.get(b'key')
tools.assert_equal(result, b'value')
result = client.replace(b'key1', b'value1', noreply=False)
tools.assert_equal(result, False)
result = client.get(b'key1')
tools.assert_equal(result, None)
result = client.replace(b'key', b'value2', noreply=False)
tools.assert_equal(result, True)
result = client.get(b'key')
tools.assert_equal(result, b'value2')
def add_replace_test(host, port):
client = Client((host, port))
client.flush_all()
result = client.add('key', 'value', noreply=False)
tools.assert_equal(result, 'STORED')
result = client.get('key')
tools.assert_equal(result, 'value')
result = client.add('key', 'value2', noreply=False)
tools.assert_equal(result, 'NOT_STORED')
result = client.get('key')
tools.assert_equal(result, 'value')
result = client.replace('key1', 'value1', noreply=False)
tools.assert_equal(result, 'NOT_STORED')
result = client.get('key1')
tools.assert_equal(result, None)
result = client.replace('key', 'value2', noreply=False)
tools.assert_equal(result, 'STORED')
result = client.get('key')
tools.assert_equal(result, 'value2')
def add_replace_test(host, port, socket_module):
client = Client((host, port), socket_module=socket_module)
client.flush_all()
result = client.add(b'key', b'value', noreply=False)
tools.assert_equal(result, True)
result = client.get(b'key')
tools.assert_equal(result, b'value')
result = client.add(b'key', b'value2', noreply=False)
tools.assert_equal(result, False)
result = client.get(b'key')
tools.assert_equal(result, b'value')
result = client.replace(b'key1', b'value1', noreply=False)
tools.assert_equal(result, False)
result = client.get(b'key1')
tools.assert_equal(result, None)
result = client.replace(b'key', b'value2', noreply=False)
tools.assert_equal(result, True)
result = client.get(b'key')
tools.assert_equal(result, b'value2')
def add_replace_test(host, port):
client = Client((host, port))
client.flush_all()
result = client.add('key', 'value', noreply=False)
tools.assert_equal(result, True)
result = client.get('key')
tools.assert_equal(result, 'value')
result = client.add('key', 'value2', noreply=False)
tools.assert_equal(result, False)
result = client.get('key')
tools.assert_equal(result, 'value')
result = client.replace('key1', 'value1', noreply=False)
tools.assert_equal(result, False)
result = client.get('key1')
tools.assert_equal(result, None)
result = client.replace('key', 'value2', noreply=False)
tools.assert_equal(result, True)
result = client.get('key')
tools.assert_equal(result, 'value2')
class PyMemcachedCache(BaseCache):
"""A cache client based on pymemcache. implemented by pure python and support noreply.
"""
def __init__(self, config):
BaseCache.__init__(self, config)
self._client = PyMemcachedClient((config['host'], config['port']),
serializer=python_memcache_serializer, deserializer=python_memcache_deserializer,
connect_timeout=_DEFAULT_SOCKET_TIMEOUT, timeout=_DEFAULT_SOCKET_TIMEOUT,
key_prefix=config.get('key_prefix', ''))
def get(self, key):
return self._client.get(key)
def delete(self, key, noreply=False):
self._client.delete(key, noreply)
return True
def get_many(self, keys):
return self._client.get_many(keys)
def set(self, key, value, timeout=None, noreply=False):
if timeout is None:
timeout = self.default_timeout
return self._client.set(key, value, timeout, noreply)
def add(self, key, value, timeout=None, noreply=False):
if timeout is None:
timeout = self.default_timeout
return self._client.add(key, value, timeout, noreply)
def set_many(self, data, timeout=None, noreply=False):
if timeout is None:
timeout = self.default_timeout
return self._client.set_many(data, timeout, noreply)
def delete_many(self, keys, noreply=False):
return self._client.delete_many(keys, noreply)
def clear(self):
return self._client.flush_all(noreply=False)
def incr(self, key, delta=1, noreply=False):
return self._client.incr(key, delta, noreply)
def decr(self, key, delta=1, noreply=False):
return self._client.decr(key, delta, noreply)
class PyMemcachedCache(BaseCache):
"""A cache client based on pymemcache. implemented by pure python and support noreply.
"""
def __init__(self, config):
BaseCache.__init__(self, config)
self._client = PyMemcachedClient((config['host'], config['port']),
serializer=python_memcache_serializer, deserializer=python_memcache_deserializer,
connect_timeout=_DEFAULT_SOCKET_TIMEOUT, timeout=_DEFAULT_SOCKET_TIMEOUT,
key_prefix=config.get('key_prefix', ''))
def get(self, key):
return self._client.get(key)
def delete(self, key, noreply=False):
self._client.delete(key, noreply)
return True
def get_many(self, keys):
return self._client.get_many(keys)
def set(self, key, value, timeout=None, noreply=False):
if timeout is None:
timeout = self.default_timeout
return self._client.set(key, value, timeout, noreply)
def add(self, key, value, timeout=None, noreply=False):
if timeout is None:
timeout = self.default_timeout
return self._client.add(key, value, timeout, noreply)
def set_many(self, data, timeout=None, noreply=False):
if timeout is None:
timeout = self.default_timeout
return self._client.set_many(data, timeout, noreply)
def delete_many(self, keys, noreply=False):
return self._client.delete_many(keys, noreply)
def clear(self):
return self._client.flush_all(noreply=False)
def incr(self, key, delta=1, noreply=False):
return self._client.incr(key, delta, noreply)
def decr(self, key, delta=1, noreply=False):
return self._client.decr(key, delta, noreply)
def test_add_not_stored():
client = Client(None)
client.sock = MockSocket(['NOT_', 'STOR', 'ED', '\r\n'])
result = client.add('key', 'value', noreply=False)
tools.assert_equal(result, False)
def test_add_stored():
client = Client(None)
client.sock = MockSocket(['STORED\r', '\n'])
result = client.add('key', 'value', noreply=False)
tools.assert_equal(result, True)
class PyMemcached(Base):
"""A cache client based on pymemcache. Implemented by pure python and support noreply
"""
def __init__(self, host, port, timeout=None, prefix=''):
Base.__init__(self, timeout)
self._client = Client(
(host, port),
serializer=python_memcache_serializer,
deserializer=python_memcache_deserializer,
connect_timeout=_DEFAULT_SOCKET_TIMEOUT,
timeout=timeout or _DEFAULT_TIMEOUT,
key_prefix=prefix,
)
def get(self, key):
"""Look up the `key` in cache and return the value of it.
:param key: the `key` to be looked up
:returns: the value if it exists and is readable, else ``None``.
TODO: support __get__
"""
return self._client.get(_to_native(key))
def delete(self, key, noreply=False):
"""Delete `key` from cache.
:param key: the `key` to delete.
:param noreply: instruct the server to not reply.
:returns: whether the key been deleted.
:rtype: boolean
TODO: __del__
"""
self._client.delete(_to_native(key), noreply)
return True
def get_values(self, *keys):
"""Get valeus by keys
foo, bar = cache.get_values('foo', 'bar')
Share same error handling with :meth:`get`
:param keys: the function acception multiple keys as positional arguments
"""
return self._client.get_many([_to_native(key) for key in keys])
def set(self, key, value, timeout=None, noreply=False):
"""Add a new key/value to the cache (overwrite value, if key exists)
:param key: the key to set
:param value: the value of the key
:param timeout: the cache timeout for the key.
If not specificed, use the default timeout.
If specified 0, key will never expire
:param noreply: instructs the server to not reply
:returns: Whether the key existed and has been set
:rtype: boolean
TODO: __set__
"""
if timeout is None:
timeout = self.timeout
return self._client.set(_to_native(key), value, timeout, noreply)
def set_not_overwrite(self, key, value, timeout=None, noreply=False):
"""Works like :meth:`set` but does not overwrite the existing value
:param key: the key to set
:param value: the value of the key
:param timeout: the cache timeout for the key.
If not specificed, use the default timeout.
If specified 0, key will never expire
:param noreply: instructs the server to not reply
:returns: Whether the key existed and has been set
:rtype: boolean
"""
if timeout is None:
timeout = self.timeout
return self._client.add(_to_native(key), value, timeout, noreply)
def set_many(self, timeout=None, noreply=False, **kw):
"""Sets multiple key-value pair
:param timeout: the cache timeout for the key.
If not specificed, use the default timeout.
If specified 0, key will never expire
:param noreply: instructs the server to not reply
:returns: Whether all key-value pairs have been set
:rtype: boolean
"""
if timeout is None:
timeout = self.timeout
res = self._client.set_many(
dict((_to_native(k), v) for k, v in kw.items()), timeout, noreply)
if isinstance(res, list):
# pymemcache 2.x+ returns a list of keys that failed to update, instead of hard-coded boolean
return not res
return res
def delete_many(self, noreply=False, *keys):
"""Delete multiple keys at once.
:param keys: The function accept multiple keys as positional arguments
:param noreply: instructs the server not reply
:returns: Whether all given keys have been deleted
:rtype: boolen
"""
return self._client.delete_many([_to_native(key) for key in keys],
noreply)
def incr(self, key, delta=1, noreply=False):
"""Increments the value of a key by `delta`. If the key does not yet exists it is initialized with `delta`
For supporting caches this is an atomic operation
:param key: the key to increment
:param delta: the delta to add
:param noreply: instructs the server not reply
:returns: The new value or ``None`` for backend errors.
"""
return self._client.incr(_to_native(key), delta, noreply)
def decr(self, key, delta=1, noreply=False):
"""Decrements the value of a key by `delta`. If the key does not yet exists it is initialized with `-delta`.
For supporting caches this is an atomic operation.
:param key: the key to increment
:param delta: the delta to subtruct
:param noreply: instructs the server not reply
:returns: The new value or `None` for backend errors.
"""
return self._client.decr(_to_native(key), delta, noreply)
def clear(self):
"""Clears the cache. Not all caches support completely clearing the cache
:returns: Whether the cache been cleared.
:rtype: boolean
"""
return self._client.flush_all(noreply=False)
def expire(self, key, timeout):
"""Set a timeout on key. After the timeout has expired, the key will automatically be deleted.
:param key: key to set timeout
:param timeout: timeout value in seconds
:returns: True if timeout was set, False if key does not exist or timeout could not be set
:rtype: boolean
"""
# This requires the version of memcached server >= 1.4.8
return self._client.touch(_to_native(key), timeout)
def test_add_not_stored():
client = Client(None)
client.sock = MockSocket(['NOT_', 'STOR', 'ED', '\r\n'])
result = client.add('key', 'value', noreply=False)
tools.assert_equal(result, 'NOT_STORED')
def test_add_stored():
client = Client(None)
client.sock = MockSocket(['STORED\r', '\n'])
result = client.add('key', 'value', noreply=False)
tools.assert_equal(result, True)
