async def sendlock(m: Matcher,
r: Redis,
key: str,
value,
func=lambda v: str(v)):
await m.send(func(value))
r.set(key, value)
def post(self, request):
form = RefreshTokenForm.create_from_request(request)
if not form.is_valid():
raise ValidationException(request, form)
try:
claims = JWTFactory.decode(form.cleaned_data['refresh'])
except JoseError as e:
raise ProblemDetailException(request,
_('Invalid token.'),
status=HTTPStatus.UNAUTHORIZED,
previous=e)
redis = Redis(host=settings.REDIS_HOST,
port=settings.REDIS_PORT,
db=settings.REDIS_DATABASE)
if not redis.exists(f"refresh_token:{claims['jti']}"):
raise UnauthorizedException(request)
access_token = JWTFactory(claims['sub']).access()
return SingleResponse(request, {'access_token': access_token},
status=HTTPStatus.OK)
class RedisPublisher(RedisNode):
def start(self):
conf = parse_uri(self._uri)
self._channel = conf.pop('channel', self._name)
self._method = conf.pop('method', 'queue')
self._client = Redis(**conf)
def stop(self):
self._client.connection_pool.disconnect()
def send(self, msg):
"""
Send a message
:param msg: serializable string
"""
self._lock.acquire()
if self._method == 'pubsub':
ret = self._client.publish(self._channel, msg)
if ret < 1:
self._log.error('No subscriber receive this message ')
else:
ret = self._client.rpush(self._channel, msg)
self._lock.release()
return ret
class RedisSafetyStore(object):
def __init__(self):
self.redisClient = Redis(connection_pool=BlockingConnectionPool())
def isSafe(self, url):
# if the urlstring is in the store, then it is not safe.
try:
notSafe = self.redisClient.get(url)
except:
print("Redis read error")
raise
if notSafe:
return False
else:
return True
def addUnsafeResources(self, jsonContent):
for resource in jsonContent["resources"]:
try:
self.redisClient.set(resource, 1)
except:
print("Redis write error")
raise
return True
def GET(self, key):
r = Redis(connection_pool=redis_pool)
url = r.hget(URL_HASH_NAME, key)
if url:
r.hincrby(COUNT_HASH_NAME, key)
raise web.seeother(url)
else:
raise notfound()
def GET(self):
r = Redis(connection_pool=redis_pool)
count = 0
for key in r.hgetall(URL_HASH_NAME):
count += 1
return render_template('index.html', count=count, section_class='index', user_id=None)
def __init__(self, client=None):
if not client:
self.client = Redis(host='localhost',
port=6379,
db=13,
password=None)
else:
self.client = client
def __init__(self, *args, **kwargs):
"""
Creates a new RedisBloom client.
"""
Redis.__init__(self, *args, **kwargs)
# Set the module commands' callbacks
MODULE_CALLBACKS = {
self.BF_RESERVE: bool_ok,
#self.BF_ADD: spaceHolder,
#self.BF_MADD: spaceHolder,
#self.BF_INSERT: spaceHolder,
#self.BF_EXISTS: spaceHolder,
#self.BF_MEXISTS: spaceHolder,
#self.BF_SCANDUMP: spaceHolder,
#self.BF_LOADCHUNK: spaceHolder,
self.BF_INFO: BFInfo,
self.CF_RESERVE: bool_ok,
#self.CF_ADD: spaceHolder,
#self.CF_ADDNX: spaceHolder,
#self.CF_INSERT: spaceHolder,
#self.CF_INSERTNX: spaceHolder,
#self.CF_EXISTS: spaceHolder,
#self.CF_DEL: spaceHolder,
#self.CF_COUNT: spaceHolder,
#self.CF_SCANDUMP: spaceHolder,
#self.CF_LOADCHUNK: spaceHolder,
self.CF_INFO: CFInfo,
self.CMS_INITBYDIM: bool_ok,
self.CMS_INITBYPROB: bool_ok,
#self.CMS_INCRBY: spaceHolder,
#self.CMS_QUERY: spaceHolder,
self.CMS_MERGE: bool_ok,
self.CMS_INFO: CMSInfo,
self.TOPK_RESERVE: bool_ok,
self.TOPK_ADD: parseToList,
#self.TOPK_QUERY: spaceHolder,
#self.TOPK_COUNT: spaceHolder,
self.TOPK_LIST: parseToList,
self.TOPK_INFO: TopKInfo,
self.TDIGEST_CREATE: bool_ok,
# self.TDIGEST_RESET: bool_ok,
# self.TDIGEST_ADD: spaceHolder,
# self.TDIGEST_MERGE: spaceHolder,
# self.TDIGEST_CDF: spaceHolder,
# self.TDIGEST_QUANTILE: spaceHolder,
# self.TDIGEST_MIN: spaceHolder,
# self.TDIGEST_MAX: spaceHolder,
self.TDIGEST_INFO: TDigestInfo,
}
for k, v in six.iteritems(MODULE_CALLBACKS):
self.set_response_callback(k, v)
def connect(self):
conf = parse_uri(self._uri)
self._channel = conf.pop('channel', self._name)
self._method = conf.pop('method', 'pubsub')
self._client = Redis(**conf)
if self._method == 'pubsub':
self._pubsub = self._client.pubsub()
self._pubsub.subscribe(self._channel)
def new_watcher(addr: str, option: WatcherOptions) -> Casbin_Watcher:
option.addr = addr
option.init_config()
w = Watcher()
w.sub_client = Redis().client()
w.pub_client = Redis().client()
w.ctx = None
w.close = None
def connection(self):
"""Get Redis connection from the pool."""
if not self._connection:
self._connection = Redis(connection_pool=_connection_pool)
try:
self._connection.ping()
except exceptions.RedisError:
self._connection = None
raise
return self._connection
def __init__(self, addr):
if not addr:
raise ValueError('Invalid redis address')
if addr.startswith('unix://'):
cargs = {'unix_socket_path':addr.replace('unix://', '')}
elif addr.startswith('tcp://'):
h = addr.replace('tcp://', '').split(':')
cargs = {'host': h[0]}
if len(h) == 2:
cargs['port'] = int(h[1])
else:
raise ValueError('Invalid redis address')
Redis.__init__(self, **cargs)
def __init__(self, addr, db=0):
if not addr:
raise ValueError('Invalid redis address')
if addr.startswith('unix://'):
cargs = {'unix_socket_path':addr.replace('unix://', '')}
elif addr.startswith('tcp://'):
h = addr.replace('tcp://', '').split(':')
cargs = {'host': h[0]}
if len(h) == 2:
cargs['port'] = int(h[1])
else:
raise ValueError('Invalid redis address')
Redis.__init__(self, **cargs)
def show_task_lists(r: Redis) -> None:
f = open(f'proactive_stats/stats.txt', "w+")
todo = []
todo = r.lrange(name=TODO_TASK_LIST, start=0, end=-1)
done = []
done = r.lrange(name=DONE_TASK_LIST, start=0, end=-1)
string = f'To-do list:\n'
for i in todo:
string += f'{i}\n'
string += f'\nDone list:\n'
for i in done:
string += f'{i}\n'
f.write(string)
f.close()
def delete():
r = Redis()
# # iterate a list in batches of size n
# def batcher(iterable, n):
# args = [iter(iterable)] * n
# return zip_longest(*args)
# # in batches of 500 delete keys matching user:*
# for keybatch in batcher(r.scan_iter('user:*'),500):
# print("keybatch", keybatch)
# r.delete(*keybatch)
for key in r.scan_iter("*"):
# delete the key
r.delete(key)
def init_redis_client(cls):
# 防止多线程竞争，获取到锁后依然可能已经初始化了
if cls.redis_objs:
return
cls.instance_name = conf.get('sentinel', "")
cls.socket_timeout = conf.get("socket_timeout", 5)
cls.connect_timeout = conf.get("connect_timeout", 0.1)
if not cls.instance_name:
# 单例模式
host = conf["host"]
cls.redis_objs[cls.MODE_READ] = Redis(
host=host.split(':')[0],
port=host.split(':')[1],
socket_timeout=cls.socket_timeout,
socket_connect_timeout=cls.connect_timeout,
retry_on_timeout=1
)
cls.redis_objs[cls.MODE_WRITE] = cls.redis_objs[cls.MODE_READ]
else:
# 哨兵模式
sentinel = Sentinel(
cls.parse_config(),
socket_timeout=cls.socket_timeout,
socket_connect_timeout=cls.connect_timeout,
retry_on_timeout=1
)
cls.redis_objs[cls.MODE_READ] = sentinel.slave_for(cls.instance_name)
cls.redis_objs[cls.MODE_WRITE] = sentinel.master_for(cls.instance_name)
def __init__(self, client=None, *args, **kwargs):
self._client = client
if not self._client:
self._client = Redis(*args, **kwargs)
self._bind_atoms()
self._bind_multi()
def setup_rq_connection():
redis_conn = get_current_connection()
if redis_conn == None:
opts = OPTIONS.get('connection')
logger.debug('Establishing Redis connection to DB %(db)s at %(host)s:%(port)s' % opts)
redis_conn = Redis(**opts)
push_connection(redis_conn)
def from_url(url, db=None, **kwargs):
"""Returns an active Redis client generated from the given database URL.
Will attempt to extract the database id from the path url fragment, if
none is provided.
"""
return Redis.from_url(url, db, **kwargs)
def from_url(url, db=None, **kwargs):
"""Returns an active Redis client generated from the given database URL.
Will attempt to extract the database id from the path url fragment, if
none is provided.
"""
return Redis.from_url(url, db, **kwargs)
class RedisSubscriber(RedisNode):
def __init__(self, config, handler):
RedisNode.__init__(self, config)
self._handler = handler
def connect(self):
conf = parse_uri(self._uri)
self._channel = conf.pop('channel', self._name)
self._method = conf.pop('method', 'pubsub')
self._client = Redis(**conf)
if self._method == 'pubsub':
self._pubsub = self._client.pubsub()
self._pubsub.subscribe(self._channel)
def start(self):
self.connect()
self.loop()
def loop(self):
while True:
self._log.debug('in subscriber loop')
raw_request = self.recv()
self._handler(raw_request)
def recv(self):
"""
Return a message as a string from the receiving queue.
"""
self._log.debug('waiting in recv()')
self._lock.acquire()
if self._method == 'pubsub':
msg = self._pubsub.listen().next()['data']
else:
msg = self._client.blpop(self._channel)[1]
self._log.debug('redisclient: %s' % self._name)
self._log.debug('recv -> %s' % msg)
self._lock.release()
return msg
def close(self):
if self._method == 'pubsub':
self._pubsub.unsubscribe(self._channel)
self._client.connection_pool.disconnect()
def _build_redis(host: str,
port: int=6379,
db: int=0,
password: str=None) -> Redis:
return Redis(host=host,
port=port,
db=db,
password=password)
def init_config(self, option: WatcherOptions):
if option.optional_update_callback:
self.set_update_callback(option.optional_update_callback)
else:
raise WatcherError("Casbin Redis Watcher callback not "
"set when an update was received")
if option.sub_client:
self.sub_client = option.sub_client
else:
# TODO
self.sub_client = Redis().client()
if option.pub_client:
self.pub_client = option.pub_client
else:
# TODO
self.pub_client = Redis().client()
def GET(self):
r = Redis(connection_pool=redis_pool)
user_id = check_token(r)
all_keys = r.hgetall(URL_HASH_NAME)
url_list = []
for key in all_keys:
url_list.append(
(
all_keys[key].replace('http://', '').replace('https://', ''),
key, r.hget(COUNT_HASH_NAME, key) or 0,
r.hget(LOG_HASH_NAME, key) or ''
),
)
return render_template('list.html', user_id=user_id, list=url_list, is_all=True)
class RedisSubscriber(RedisNode):
def __init__(self, config, handler):
RedisNode.__init__(self, config)
self._handler = handler
def connect(self):
conf = parse_uri(self._uri)
self._channel = conf.pop('channel', self._name)
self._method = conf.pop('method', 'pubsub')
self._client = Redis(**conf)
if self._method == 'pubsub':
self._pubsub = self._client.pubsub()
self._pubsub.subscribe(self._channel)
def start(self):
self.connect()
self.loop()
def loop(self):
while True:
self._log.debug('in subscriber loop')
raw_request = self.recv()
self._handler(raw_request)
def recv(self):
"""
Return a message as a string from the receiving queue.
"""
self._log.debug('waiting in recv()')
self._lock.acquire()
if self._method == 'pubsub':
msg = self._pubsub.listen().next()['data']
else:
msg = self._client.blpop(self._channel)[1]
self._log.debug('redisclient: %s' % self._name)
self._log.debug('recv -> %s' % msg)
self._lock.release()
return msg
def close(self):
if self._method == 'pubsub':
self._pubsub.unsubscribe(self._channel)
self._client.connection_pool.disconnect()
def uget(self, name):
"""
Return the value and key ``name`` or None, and decode it if not None.
"""
value = Redis.get(self, name)
if value:
return value.decode(self.encoding)
return value
def __init__(self, config):
self._redis = Redis(host=config.get('redis','host'),
port=int(config.get('redis','port')),
db=int(config.get('redis','db')))
self._delta_secs = int(eval(config.get('timeseries',
'delta_secs')))
self._expiration_delay_secs = int(eval(config.get('timeseries',
'expiration_delay_secs')))
def __init__(self, client=None, *args, **kwargs):
self._client = client
if not self._client:
kwargs.setdefault('decode_responses', True)
self._client = Redis(*args, **kwargs)
self._bind_atoms()
self._bind_multi()
def _transfer_slots(redis_conn_from: Redis, redis_id_from: str, redis_conn_to: Redis, redis_id_to: str, slots: list):
"""
Documentation from http://redis.io/commands/cluster-setslot
1. Set the destination node slot to importing state using CLUSTER SETSLOT <slot> IMPORTING <source-node-id>.
2. Set the source node slot to migrating state using CLUSTER SETSLOT <slot> MIGRATING <destination-node-id>.
3. Get keys from the source node with CLUSTER GETKEYSINSLOT command and move them into the destination node
using the MIGRATE command.
4. Use CLUSTER SETSLOT <slot> NODE <destination-node-id> in the source or destination.
"""
print('Transfering %d slots from %s to %s...' % (len(slots), redis_id_from, redis_id_to))
dest_host = redis_conn_to.connection_pool.connection_kwargs['host']
dest_port = redis_conn_to.connection_pool.connection_kwargs['port']
pipeline_to = redis_conn_to.pipeline()
pipeline_from = redis_conn_from.pipeline()
for slot in slots:
# 1, 2
pipeline_to.execute_command('CLUSTER SETSLOT', slot, 'IMPORTING', redis_id_from)
pipeline_from.execute_command('CLUSTER SETSLOT', slot, 'MIGRATING', redis_id_to)
pipeline_to.execute()
pipeline_from.execute()
for slot in slots:
# 3
keys = redis_conn_from.execute_command('CLUSTER GETKEYSINSLOT', slot, 1000000)
if len(keys) > 0:
redis_conn_from.execute_command('MIGRATE', dest_host, dest_port, "", 0, 180000, 'KEYS', *keys)
# 4
redis_conn_to.execute_command('CLUSTER SETSLOT', slot, 'NODE', redis_id_to)
def POST(self):
r = Redis(connection_pool=redis_pool)
user_id = check_token(r)
form = url_form()
if not form.validates():
return render_template('add.html',
form=form,
user_id=user_id,
is_add=True,
)
url = form['url'].value
token = hashlib.sha1()
token.update(url.replace('http(s)?://', '').strip())
key = token.hexdigest()[:6]
print key + url
if not r.hget(URL_HASH_NAME, key):
r.hset(URL_HASH_NAME, key, url)
r.hset(COUNT_HASH_NAME, key, 0)
if user_id[1]:
r.hset(LOG_HASH_NAME, key, r.hget(TOKEN_HASH_NAME, web.input().token))
if user_id[1] == '':
raise web.seeother('/%s/+' % key)
else:
raise web.seeother('/%s/+?token=%s' % (key, user_id[1]))
def queue_cmd(conn: Redis,
job_queue: str,
cmd: str,
email: Optional[str] = None) -> str:
"""Given a command CMD; (optional) EMAIL; and a redis connection CONN, queue
it in Redis with an initial status of 'queued'. The following status codes
are supported:
queued: Unprocessed; Still in the queue
running: Still running
success: Successful completion
error: Erroneous completion
Returns the name of the specific redis hash for the specific task.
"""
if not conn.ping():
raise RedisConnectionError
unique_id = ("cmd::"
f"{datetime.now().strftime('%Y-%m-%d%H-%M%S-%M%S-')}"
f"{str(uuid4())}")
conn.rpush(job_queue, unique_id)
for key, value in {"cmd": cmd, "result": "", "status": "queued"}.items():
conn.hset(name=unique_id, key=key, value=value)
if email:
conn.hset(name=unique_id, key="email", value=email)
return unique_id
def connect(self):
conf = parse_uri(self._uri)
self._channel = conf.pop('channel', self._name)
self._method = conf.pop('method', 'pubsub')
self._client = Redis(**conf)
if self._method == 'pubsub':
self._pubsub = self._client.pubsub()
self._pubsub.subscribe(self._channel)
def GET(self, key):
r = Redis(connection_pool=redis_pool)
user_id = check_token(r)
url = r.hget(URL_HASH_NAME, key)
if url:
count = r.hget(COUNT_HASH_NAME, key)
return render_template('details.html',
user_id=user_id,
key=key,
url=url,
count=count,
section_class='index'
)
else:
raise notfound()
def __init__(self, app, config):
if 'host' not in config:
raise ConfigurationError("Redis extension needs 'host' configured")
if 'password' not in config:
raise ConfigurationError(
"Postmark extension needs 'password' configured")
host = config['host']
password = config['password']
redis = Redis(host=host, password=password)
register_singleton(redis, 'redis')
def testRegisterSensorDataDbmsListener(self): #check for true when the connection variables are ok self.assertEqual(True, self.persistenceUtil.registerSensorDataDbmsListener()) #add an invalid port to the jedisSensor self.persistenceUtil.r_sensor = Redis(host = "localhost", port = 6890) #check for false when connection variables are invalid self.assertEqual(False, self.persistenceUtil.registerSensorDataDbmsListener())
def _get_current_redis_client() -> Redis:
global _redis_clients
client = _redis_clients.current_client
if client is None:
assert _connection_url is not None, "please set connection string first"
client = _redis_clients.current_client = Redis.from_url(
_connection_url)
return client
class Cache:
""" Cache class
"""
def __init__(self):
""" Store an instance of the Redis client as a private variable
named _redis
"""
self._redis = Redis()
self._redis.flushdb()
@call_history
@count_calls
def store(self, data: Union[str, bytes, int, float]) -> str:
""" Takes a data argument and returns a string
"""
key = str(uuid4())
self._redis.set(key, data)
return key
def get(self, key: str, fn: Optional[Callable] = None) ->\
Union[str, bytes, int, float]:
""" Take a key string argument and an optional Callable argument
named fn
"""
if key:
result = self._redis.get(key)
if fn:
return fn(result)
else:
return result
def get_str(self, data: bytes) -> str:
""" Will automatically parametrize Cache.get with the correct
conversion function
"""
return data.decode('utf-8')
def get_int(self, data: bytes) -> int:
""" Will automatically parametrize Cache.get with the correct
conversion function
"""
byte_order = sys.byteorder
return int.from_bytes(data, byte_order)
def hgetall(self, name):
"""
Return a Python dict of the hash's name/value pairs, both key and
value decoded.
"""
output = {}
info = Redis.hgetall(self, name)
for key, value in info.iteritems():
output[key.decode(self.encoding)] = value.decode(self.encoding)
return output
def _add_new_nodes(self, cluster_size):
old_nodes = self.nodes.copy()
nodes_before = self._get_nodes_primitive()
self._docker_scale(cluster_size)
nodes_after = self._get_nodes_primitive()
new_ips = [':'.join(map(str, x)) for x in set(nodes_after) - set(nodes_before)]
print(new_ips)
master_ip_port = old_nodes[0]['ip_port']
master_ip, master_port = master_ip_port.split(':')
master_conn = Redis(master_ip, master_port)
print("Adding nodes to the cluster")
for ip in new_ips:
new_ip, new_port = ip.split(':')
master_conn.execute_command('CLUSTER MEET', new_ip, new_port)
print("Preventive fix")
sleep(3)
fix = subprocess.Popen(['ruby', 'redis-trib.rb', 'fix', master_ip_port], stdin=subprocess.PIPE, stdout=subprocess.DEVNULL)
fix.communicate(b'yes\n')
fix.wait()
sleep(3)
new_nodes = [x for x in self._get_running_nodes() if x['ip_port'] in new_ips]
slots_per_node = round(16384 / cluster_size)
old_redises = {x[0]: Redis(x[0], x[1]) for x in (y['ip_port'].split(':') for y in old_nodes)}
new_redises = [Redis(x[0], x[1]) for x in (y['ip_port'].split(':') for y in new_nodes)]
slots_repartition = self._get_slots_repartition(list(old_redises.values())[0])
for dest_node, dest_redis, i in zip(new_nodes, new_redises, range(len(new_nodes))):
slots = slots_repartition[i * slots_per_node: (i + 1) * slots_per_node]
sources_ip = {x[1] for x in slots}
for source_ip in sources_ip:
slots_for_source = [x for x in slots if x[1] == source_ip]
source_redis = old_redises[source_ip]
self._transfer_slots(source_redis, slots_for_source[0][3],
dest_redis, dest_node['id'],
[x[0] for x in slots_for_source])
subprocess.check_call(['ruby', 'redis-trib.rb', 'info', master_ip_port])
def redis_client(self) -> Redis:
"""Provide an instance of Redis client."""
if self._redis_client is None:
redis_client = Redis(connection_pool=self.redis_conn_pool)
self._redis_client = redis_client
self._logger.debug("[%s]: Initialized Redis client: %s",
self.__name__, self._redis_client)
return self._redis_client
def main(argv=sys.argv):
if len(argv) < 2:
usage(argv)
config_uri = argv[1]
options = parse_vars(argv[2:])
setup_logging(config_uri)
settings = get_appsettings(config_uri, options=options)
logging.getLogger("c2corg_api").setLevel(logging.INFO)
redis_url = "{0}?db={1}".format(settings["redis.url"], settings["redis.db_cache"])
log.info("Cache Redis: {0}".format(redis_url))
# we don't really need a connection pool here, but the `from_url`
# function is convenient
redis_pool = ConnectionPool.from_url(redis_url, max_connections=1)
# remove all keys from the database
r = Redis(connection_pool=redis_pool)
r.flushdb()
log.info("Flushed cache")
def flushall(self):
if self.cluster_size == 1:
subprocess.check_call([
'redis-cli', '-h', 'erasuretester_redis-standalone_1',
'FLUSHALL'
])
elif self.cluster_size >= 2:
nodes = self._get_running_nodes()
for redis in (Redis(x[0], x[1])
for x in (y['ip_port'].split(':') for y in nodes)):
redis.flushall()
class Jedis():
def __init__(self):
pool = ConnectionPool(host=cfg.REDIS_HOST, port=cfg.REDIS_PORT)
self.client = Redis(connection_pool=pool)
def page_query(self, redis_key, start, end):
'''
分页查询
:param redis_key: redis中的key名称
:param start:起始页
:param end:结束页
:return:
'''
return self.client.lrange(name=redis_key, start=start, end=end)
def len(self, redis_key):
return self.client.llen(name=redis_key)
def lpush(self, key, val):
self.client.lpush(key, val)
def queue_cmd(cmd: str, conn: Redis) -> str:
"""Given a command CMD, and a redis connection CONN, queue it in Redis
with an initial status of 'queued'. The following status codes are
supported:
queued: Unprocessed; Still in the queue
running: Still running
success: Successful completion
error: Erroneous completion
"""
if not conn.ping():
raise RedisConnectionError
unique_id = ("cmd::"
f"{datetime.now().strftime('%Y-%m-%d%H-%M%S-%M%S-')}"
f"{str(uuid4())}")
for key, value in {"cmd": cmd, "result": "", "status": "queued"}.items():
conn.hset(key, value, unique_id)
conn.rpush("GN2::job-queue", unique_id)
return unique_id
def main(argv=sys.argv):
if len(argv) < 2:
usage(argv)
config_uri = argv[1]
options = parse_vars(argv[2:])
setup_logging(config_uri)
settings = get_appsettings(config_uri, options=options)
logging.getLogger('c2corg_ui').setLevel(logging.INFO)
log.info('Cache Redis: {0}'.format(settings['redis.url']))
# we don't really need a connection pool here, but the `from_url`
# function is convenient
redis_pool = ConnectionPool.from_url(
settings['redis.url'], max_connections=1)
# remove all keys from the database
r = Redis(connection_pool=redis_pool)
r.flushdb()
log.info('Flushed cache')
def main(argv=sys.argv):
if len(argv) < 2:
usage(argv)
config_uri = argv[1]
options = parse_vars(argv[2:])
setup_logging(config_uri)
settings = get_appsettings(config_uri, options=options)
logging.getLogger('c2corg_ui').setLevel(logging.INFO)
log.info('Cache Redis: {0}'.format(settings['redis.url']))
# we don't really need a connection pool here, but the `from_url`
# function is convenient
redis_pool = ConnectionPool.from_url(
settings['redis.url'], max_connections=1)
# remove all keys from the database
r = Redis(connection_pool=redis_pool)
r.flushdb()
log.info('Flushed cache')
def redis(self):
"""Returns the redis.client object for the given host/port
Performing lazy initialization if it hasn't already been created
"""
if not self.__redis:
redis = Redis( host=self.__host, port=self.__port, password=self.__password, socket_timeout=self.__connection_timeout )
self.__update_latest( redis )
#__update_latest can raise an exception, so don't assign to self until it
#completes successfully
self.__redis = redis
return self.__redis
def __init__(self, urls, **settings):
"""
Args:
urls: list of connection urls for `redis.client.StrictRedis#from_url`.
settings: additional settings for redis client.
Attributes:
mapping (dict): maintain the connection url & corresponding Redis client mapping.
sharding: `tornext.sharding.Sharding` instance for dispatching requests.
"""
self.sharding = Sharding(urls)
self.mapping = dict([(url, Redis.from_url(url)) for url in urls])
def _connect(self) -> NoReturn:
"""
Connection to redis server with retries
:param retry_counter: counter of times of retrying
:return: Redis connection if it was successful and None otherwise
"""
try:
self._kv_storage = Redis(
host=self.host,
port=self.port,
socket_timeout=self.timeout
)
self._kv_storage.ping()
except Exception:
logging.error(
"Got error while connecting to redis with host %s and port %d.",
self.host,
self.port
)
class Cache:
"""Redis Class"""
def __init__(self):
"""constructor"""
self._redis = Redis()
self._redis.flushdb()
@call_history
@count_calls
def store(self, data: Union[str, bytes, int, float]) -> str:
"""returns a string"""
key = str(uuid.uuid4())
self._redis.set(key, data)
return key
def get(self, key: str, fn: Optional[Callable] = None) ->\
Union[str, bytes, int, float]:
"""get method"""
if key:
result = self._redis.get(key)
return fn(result) if fn else result
def _get_slots_repartition(any_redis_conn: Redis):
"""
Returns a shuffled list of (slot_number, node_ip, node_port, node_id)
"""
# List of [10923, 16383, [b'10.0.0.4', 6379, b'f1dc21d0b7a24aaea3b3fcd0ef943a35fa2ebb42']]
cluster_slots = any_redis_conn.execute_command('CLUSTER SLOTS')
output = []
for slot in cluster_slots:
for i in range(slot[0], slot[1] + 1):
output.append((i, slot[2][0].decode(), slot[2][1], slot[2][2].decode()))
random.shuffle(output)
return output
def lrange(self, name, start, end):
"""
Return a slice of the list ``name`` between
position ``start`` and ``end``
``start`` and ``end`` can be negative numbers just like
Python slicing notation
decode the results
"""
results = Redis.lrange(self, name, start, end)
return [result.decode(self.encoding) for result in results]
class RedisQueue():
def __init__(self):
self.redis = Redis(host=settings.REDIS['host'], port=settings.REDIS['port'])
def pop(self, queueName):
item = self.redis.rpop(queueName)
try:
item = json.loads(item)
except:
pass
return item
def push(self, queueName, item):
try:
item = json.dumps(item)
except:
pass
self.redis.lpush(queueName, item)
def isEmpty(self, queueName):
if self.redis.llen(queueName):
return False
else:
return True
class TSStore(object):
def __init__(self, config):
self._redis = Redis(host=config.get('redis','host'),
port=int(config.get('redis','port')),
db=int(config.get('redis','db')))
self._delta_secs = int(eval(config.get('timeseries',
'delta_secs')))
self._expiration_delay_secs = int(eval(config.get('timeseries',
'expiration_delay_secs')))
def queries_key(self):
return 'queries'
@property
def queries(self):
return self._redis.smembers(self.queries_key())
@queries.setter
def queries(self, values):
pipe = self._redis.pipeline()
pipe.delete(self.queries_key())
for v in values:
pipe.sadd(self.queries_key(),
v)
return pipe.execute()
def _interval_key(self, timestamp):
return int(timestamp) - int(timestamp) % self._delta_secs
def _ts_key(self, timestamp, query):
return 'ts:%(query)s:%(timestamp_key)s'%{'query':query,
'timestamp_key':self._interval_key(timestamp)}
def _tweet_key(self, t):
if type(t) == Tweet:
return 'tweet:%s'%t.id
return 'tweet:%s'%t
def _query_key(self, query):
return 'query:%s:last_tweet_id'%query
def _store_tweet(self, pipe, tweet):
tweet_key = self._tweet_key(tweet)
pipe.set(tweet_key, tweet.serialize())
pipe.expire(tweet_key, self._expiration_delay_secs)
def _reference_tweet(self, pipe, timestamp, query, tweet):
ts_key = self._ts_key(timestamp, query)
pipe.lpush(ts_key,tweet.id)
pipe.expire(ts_key,self._expiration_delay_secs)
def _update_last_query_tweet(self, pipe, query, tweet):
query_key = self._query_key(query)
pipe.set(query_key,tweet.id)
def append(self, query, tweet):
pipe = self._redis.pipeline()
timestamp = time.time()
self._store_tweet(pipe, tweet)
self._reference_tweet(pipe, timestamp, query, tweet)
self._update_last_query_tweet(pipe, query, tweet)
return pipe.execute()
def retrieve_ts(self, query, timestamp, n_elements=-1):
ts_key = self._ts_key(timestamp, query)
return self._redis.lrange(ts_key, 0, n_elements)
def retrieve_last_tweet_id(self, query):
query_key = self._query_key(query)
return self._redis.get(query_key)
def retrieve_tweet(self, tweet_id):
tweet_key = self._tweet_key(tweet_id)
data = self._redis.get(tweet_key)
return Tweet.deserialize(data).todict()
def retrieve(self, query, n_periods=30):
current_timestamp = now = int(time.time())
start_timestamp = now - self._delta_secs * n_periods
tweets = []
while current_timestamp > start_timestamp:
current_tweet_ids = self.retrieve_ts(query, current_timestamp)
tweets.append({'timestamp': current_timestamp,
'tweets' : [ self.retrieve_tweet(tid) for tid in current_tweet_ids ] })
current_timestamp -= self._delta_secs
return { 'now' : now,
'ts' : tweets }
def __init__(self, *args, **kwargs):
self.encoding = 'utf-8'
Redis.__init__(self, *args, **kwargs)
def smembers(self, name):
"""
Return all members of the set ``name``, decoding.
"""
values = Redis.smembers(self, name)
return (value.decode(self.encoding) for value in values)
# -*- coding: utf-8 -*-
__author__ = 'fjs'
from connection import BlockingConnectionPool
from redis.client import Redis
client = Redis(connection_pool=BlockingConnectionPool(max_connections=2))
client.set("fjs", "fjs")
print client.get("fjs")
client.lpush("nn", 1)
print client.lpop("nn")
def __new__(cls, *args, **kwargs):
k = str(args)+str(kwargs)
if k not in cls.__instances:
cls.__instances[k] = Redis.__new__(cls, *args, **kwargs)
return cls.__instances[k]
def start(self):
conf = parse_uri(self._uri)
self._channel = conf.pop('channel', self._name)
self._method = conf.pop('method', 'queue')
self._client = Redis(**conf)
class HotClient(object):
"""
A Redis client wrapper that loads Lua functions and creates
client methods for calling them.
"""
_ATOMS_FILE_NAME = "atoms.lua"
_BIT_FILE_NAME = "bit.lua"
_MULTI_FILE_NAME = "multi.lua"
def __init__(self, client=None, *args, **kwargs):
self._client = client
if not self._client:
kwargs.setdefault('decode_responses', True)
self._client = Redis(*args, **kwargs)
self._bind_atoms()
self._bind_multi()
def _bind_atoms(self):
with open(self._get_lua_path(self._BIT_FILE_NAME)) as f:
luabit = f.read()
requires_luabit = (
"number_and",
"number_or",
"number_xor",
"number_lshift",
"number_rshift"
)
for name, snippet in self._split_lua_file_into_funcs(
self._ATOMS_FILE_NAME):
if name in requires_luabit:
snippet = luabit + snippet
self._bind_lua_method(name, snippet)
def _bind_multi(self):
for name, snippet in self._split_lua_file_into_funcs("multi.lua"):
self._bind_private_lua_script(name, snippet)
@staticmethod
def _get_lua_path(name):
"""
Joins the given name with the relative path of the module.
"""
parts = (os.path.dirname(os.path.abspath(__file__)), "lua", name)
return os.path.join(*parts)
def _split_lua_file_into_funcs(self, file_name):
"""
Returns the name / code snippet pair for each Lua function
in the file under file_name.
"""
with open(self._get_lua_path(file_name)) as f:
for func in f.read().strip().split("function "):
if func:
bits = func.split("\n", 1)
name = bits[0].split("(")[0].strip()
snippet = bits[1].rsplit("end", 1)[0].strip()
yield name, snippet
def _bind_lua_method(self, name, code):
"""
Registers the code snippet as a Lua script, and binds the
script to the client as a method that can be called with
the same signature as regular client methods, eg with a
single key arg.
"""
script = self._client.register_script(code)
method = lambda key, *a, **k: script(keys=[key], args=a, **k)
setattr(self, name, method)
def _bind_private_lua_script(self, name, code):
"""
Registers the code snippet as a Lua script, and binds the
script to the client as a private method (eg. some_lua_func becomes
a _some_lua_func method of HotClient) that can be latter wrapped in
public methods with better argument and error handling.
"""
script = self._client.register_script(code)
setattr(self, '_' + name, script)
def rank_lists_by_length(self, *keys):
"""
Creates a temporary ZSET with LIST keys as entries and their
*LLEN* as scores. Uses ZREVRANGE .. WITHSCORES, to return keys and
lengths sorted from longest to shortests.
:param keys: keys of the lists you want rank
:return: :rtype: Ranking :raise ValueError:
:raise ValueError: when not enough keys are provided
"""
return Ranking(self._rank_lists_by_length, keys)
def rank_sets_by_cardinality(self, *keys):
"""
Creates a temporary ZSET with SET keys as entries and their
*CARD* as scores. Uses ZREVRANGE .. WITHSCORES, to return keys and
cardinalities sorted from largest to smallest.
:param keys: keys of the sets you want to rank
:return: :rtype: Ranking
:raise ValueError: when not enough keys are provided
"""
return Ranking(self._rank_sets_by_cardinality, keys)
def __getattr__(self, name):
if name in self.__dict__:
return super(HotClient, self).__getattribute__(name)
return self._client.__getattribute__(name)
