def test_slave_for(cluster, sentinel):
cluster.slaves = [
{'ip': '127.0.0.1', 'port': 6379,
'is_odown': False, 'is_sdown': False},
]
slave = sentinel.slave_for('mymaster', db=9)
assert slave.ping()
def test_slave_for(cluster, sentinel):
cluster.slaves = [
{'ip': '127.0.0.1', 'port': 6379,
'is_odown': False, 'is_sdown': False},
]
slave = sentinel.slave_for('mymaster', db=9)
assert slave.ping()
def test_slave_for(cluster, sentinel):
cluster.slaves = [{
"ip": "127.0.0.1",
"port": 6379,
"is_odown": False,
"is_sdown": False
}]
slave = sentinel.slave_for("mymaster", db=9)
assert slave.ping()
def __init__(
self,
url: Optional[str] = None,
name: str = "tilecloud",
stop_if_empty: bool = True,
timeout: int = 5,
pending_timeout: int = 5 * 60,
max_retries: int = 5,
max_errors_age: int = 24 * 3600,
max_errors_nb: int = 100,
sentinels: Optional[List[Tuple[str, int]]] = None,
service_name: str = "mymaster",
sentinel_kwargs: Any = None,
connection_kwargs: Any = None,
**kwargs: Any,
):
super().__init__(**kwargs)
connection_kwargs = connection_kwargs or {}
if sentinels is not None:
sentinel = redis.sentinel.Sentinel(sentinels,
sentinel_kwargs=sentinel_kwargs,
**connection_kwargs)
self._master = sentinel.master_for(service_name)
self._slave = sentinel.slave_for(service_name)
else:
assert url is not None
self._master = redis.Redis.from_url(url, **connection_kwargs)
self._slave = self._master
self._stop_if_empty = stop_if_empty
self._timeout_ms = int(timeout * 1000)
self._pending_timeout_ms = int(pending_timeout * 1000)
self._max_retries = max_retries
self._max_errors_age = max_errors_age
self._max_errors_nb = max_errors_nb
if not name.startswith("queue_"):
name = "queue_" + name
self._name_str = name
self._name = name.encode("utf-8")
self._errors_name = self._name + b"_errors"
try:
self._master.xgroup_create(name=self._name,
groupname=STREAM_GROUP,
id="0-0",
mkstream=True)
except redis.ResponseError as e:
if "BUSYGROUP" not in str(e):
raise
def slave_for(self, service_name, **kwargs):
try:
return self.local.slave_connections[service_name]
except AttributeError:
self.local.slave_connections = {}
except KeyError:
pass
sentinel = self.sentinel
if sentinel is None:
msg = 'Cannot get slave {} using non-sentinel configuration'
raise RuntimeError(msg.format(service_name))
conn = sentinel.slave_for(service_name, redis_class=self.client_class, **kwargs)
self.local.slave_connections[service_name] = conn
return conn
def __init__(
self,
sentinels=None,
master=None,
password=None,
db=0,
default_timeout=300,
key_prefix=None,
**kwargs
):
super(RedisSentinelCache, self).__init__(default_timeout)
try:
import redis.sentinel
except ImportError:
raise RuntimeError("no redis module found")
if kwargs.get("decode_responses", None):
raise ValueError(
"decode_responses is not supported by " "RedisCache."
)
sentinels = sentinels or [("127.0.0.1", 26379)]
sentinel_kwargs = {
key[9:]: value
for key, value in kwargs.items()
if key.startswith("sentinel_")
}
kwargs = {
key[9:]: value
for key, value in kwargs.items()
if not key.startswith("sentinel_")
}
sentinel = redis.sentinel.Sentinel(
sentinels=sentinels,
password=password,
db=db,
sentinel_kwargs=sentinel_kwargs,
**kwargs
)
self._write_client = sentinel.master_for(master)
self._read_clients = sentinel.slave_for(master)
self.key_prefix = key_prefix or ""
def __init__(
self,
sentinels=None,
master=None,
password=None,
db=0,
default_timeout=300,
key_prefix=None,
**kwargs
):
super().__init__(default_timeout=default_timeout)
try:
import redis.sentinel
except ImportError:
raise RuntimeError("no redis module found")
if kwargs.get("decode_responses", None):
raise ValueError(
"decode_responses is not supported by " "RedisCache."
)
sentinels = sentinels or [("127.0.0.1", 26379)]
sentinel_kwargs = {
key[9:]: value
for key, value in kwargs.items()
if key.startswith("sentinel_")
}
kwargs = {
key[9:]: value
for key, value in kwargs.items()
if not key.startswith("sentinel_")
}
sentinel = redis.sentinel.Sentinel(
sentinels=sentinels,
password=password,
db=db,
sentinel_kwargs=sentinel_kwargs,
**kwargs
)
self._write_client = sentinel.master_for(master)
self._read_clients = sentinel.slave_for(master)
self.key_prefix = key_prefix or ""
def _create_client(self):
sentinel_kwargs = {}
sentinel_kwargs.update(self.sentinel_kwargs)
sentinel_kwargs.setdefault("password", self.password)
connection_kwargs = {}
connection_kwargs.update(self.connection_kwargs)
connection_kwargs.setdefault("password", self.password)
if self.db is not None:
connection_kwargs.setdefault("db", self.db)
sentinel_kwargs.setdefault("db", self.db)
if self.socket_timeout is not None:
connection_kwargs.setdefault("socket_timeout", self.socket_timeout)
sentinel = redis.sentinel.Sentinel(self.sentinels,
sentinel_kwargs=sentinel_kwargs,
**connection_kwargs)
self.writer_client = sentinel.master_for(self.service_name)
self.reader_client = sentinel.slave_for(self.service_name)
def __init__(self, config: tilecloud_chain.configuration.Redis,
**kwargs: Any):
"""Initialize."""
super().__init__(**kwargs)
connection_kwargs = {}
if "socket_timeout" in config:
connection_kwargs["socket_timeout"] = config["socket_timeout"]
if "db" in config:
connection_kwargs["db"] = config["db"]
if "url" in config:
self._master = redis.Redis.from_url(
config["url"], **connection_kwargs) # type: ignore
self._slave = self._master
else:
sentinel = redis.sentinel.Sentinel(config["sentinels"],
**connection_kwargs)
self._master = sentinel.master_for(
config.get("service_name", "mymaster"))
self._slave = sentinel.slave_for(
config.get("service_name", "mymaster"))
self._prefix = config["prefix"]
self._expiration = config["expiration"]
def connect(url,
sentinel_class=redis.sentinel.Sentinel,
sentinel_options=None,
client_class=redis.StrictRedis,
client_options=None):
parsed_url = urlparse.urlparse(url)
if parsed_url.scheme not in ['redis', 'rediss', 'unix', 'redis+sentinel']:
raise ValueError('Unsupported redis URL scheme: {}'.format(
parsed_url.scheme))
if sentinel_options is None:
sentinel_options = {}
if client_options is None:
client_options = {}
if parsed_url.scheme != 'redis+sentinel':
return None, client_class.from_url(url, **client_options)
sentinel_url = parse_sentinel_url(url,
sentinel_options=sentinel_options,
client_options=client_options)
sentinel = sentinel_class(sentinel_url.hosts,
sentinel_kwargs=sentinel_url.sentinel_options,
**sentinel_url.client_options)
client = None
if sentinel_url.default_client:
if sentinel_url.default_client.type == 'master':
client = sentinel.master_for(sentinel_url.default_client.service,
redis_class=client_class)
else:
client = sentinel.slave_for(sentinel_url.default_client.service,
redis_class=client_class)
return sentinel, client
def test_slave_for_slave_not_found_error(cluster, sentinel):
cluster.master['is_odown'] = True
slave = sentinel.slave_for('mymaster', db=9)
with pytest.raises(SlaveNotFoundError):
slave.ping()
def test_slave_for_slave_not_found_error(cluster, sentinel):
cluster.master['is_odown'] = True
slave = sentinel.slave_for('mymaster', db=9)
with pytest.raises(SlaveNotFoundError):
slave.ping()
