o `f&8@sddlZddlZddlmZddlmZddlmZddlm Z m Z m Z ddl m Z mZmZmZddlmZGdd d e ZGd d d e ZGd d d e ZGdddee ZGdddZGddde ZGdddeZdS)N)Optional)Redis)SentinelCommands) ConnectionConnectionPool SSLConnection)ConnectionError ReadOnlyError ResponseError TimeoutError) str_if_bytesc@ eZdZdS)MasterNotFoundErrorN__name__ __module__ __qualname__rrG/home/ubuntu/webapp/venv/lib/python3.10/site-packages/redis/sentinel.pyr rc@r )SlaveNotFoundErrorNrrrrrrrrcsjeZdZfddZddZfddZddZd d Z dd d d d ee dee ffddZ Z S)SentinelManagedConnectionc s"|d|_tjdi|dS)Nconnection_poolr)poprsuper__init__)selfkwargs __class__rrrs z"SentinelManagedConnection.__init__cCsR|j}dt|jdt|jd|jd}|jr'd|jd|j}||}|S)N<. (service=z%s)>z,host=z,port=)rtyperr service_namehostport)rpools host_inforrr__repr__sz"SentinelManagedConnection.__repr__csH|\|_|_t|jjr |dt|dkr"t ddSdS)NPINGPONGz PING failed) r%r&rconnectrcheck_connection send_commandr read_responser)raddressrrr connect_to$s   z$SentinelManagedConnection.connect_toc Cs\|jrdS|jjr||jdS|jD]}z||WSty+YqwtN)_sockr is_masterr2get_master_address rotate_slavesrr)rslaverrr_connect_retry,s z(SentinelManagedConnection._connect_retrycCs|j|jddS)NcSsdSr3r)errorrrr:sz3SentinelManagedConnection.connect..)retrycall_with_retryr9rrrrr-9sz!SentinelManagedConnection.connectF)disconnect_on_error push_requestr?r@cs>z tj|||dWSty|jjr|tdw)N)disable_decodingr?r@z"The previous master is now a slave)rr0r rr5 disconnectr)rrAr?r@rrrr0<s z'SentinelManagedConnection.read_response)F) rrrrr*r2r9r-rboolr0 __classcell__rrrrrs   rc@r )SentinelManagedSSLConnectionNrrrrrrEUrrEc@s,eZdZddZddZddZddZd S) SentinelConnectionPoolProxycCs0t||_||_||_||_||_|dSr3)weakrefrefconnection_pool_refr5r.r$sentinel_managerreset)rrr5r.r$rJrrrrZs  z$SentinelConnectionPoolProxy.__init__cCsd|_d|_dSr3)master_addressslave_rr_counterr>rrrrKis z!SentinelConnectionPoolProxy.resetcCsD|j|j}|jr |j|kr ||_|}|dur |jdd|S)NF)inuse_connections)rJdiscover_masterr$r5rLrIrB)rrLrrrrr6ms z.SentinelConnectionPoolProxy.get_master_addressccs|j|j}|r5|jdurtdt|d|_tt|D]}|jdt||_||j}|Vq z|VWn t yEYnwt d|j)NrzNo slave found for ) rJdiscover_slavesr$rMrandomrandintlenranger6rr)rslaves_r8rrrr7xs   z)SentinelConnectionPoolProxy.rotate_slavesN)rrrrrKr6r7rrrrrFYs  rFcs\eZdZdZfddZddZfddZedd Zfd d Z d d Z ddZ Z S)SentinelConnectionPoolz Sentinel backed connection pool. If ``check_connection`` flag is set to True, SentinelManagedConnection sends a PING command right after establishing the connection. c s|d|ddr tnt|d<|dd|_|dd|_t||j|j||d|_tj d i||j|j d<||_ ||_ dS) Nconnection_classsslFr5Tr.)rr5r.r$rJrr) getrrErr5r.rFproxyrrconnection_kwargsr$rJ)rr$rJrrrrrs&   zSentinelConnectionPool.__init__c Cs:|jrdnd}dt|jdt|jd|jd|d S)Nmasterr8r r!r"(z))>)r5r#rrr$)rrolerrrr*szSentinelConnectionPool.__repr__cst|jdSr3)rrKr\r>rrrrKs zSentinelConnectionPool.resetcCs|jjSr3)r\rLr>rrrrLsz%SentinelConnectionPool.master_addresscs4|j p|jo|j|j|jfk}t}|o||Sr3)r5rLr%r&rowns_connection)r connectioncheckparentrrrras z&SentinelConnectionPool.owns_connectioncC |jSr3)r\r6r>rrrr6s z)SentinelConnectionPool.get_master_addresscCre)zRound-robin slave balancer)r\r7r>rrrr7s z$SentinelConnectionPool.rotate_slaves) rrr__doc__rr*rKpropertyrLrar6r7rDrrrrrXs    rXc@sjeZdZdZ  dddZddZdd Zd d Zd d ZddZ ddZ e e fddZ e e fddZdS)Sentinelar Redis Sentinel cluster client >>> from redis.sentinel import Sentinel >>> sentinel = Sentinel([('localhost', 26379)], socket_timeout=0.1) >>> master = sentinel.master_for('mymaster', socket_timeout=0.1) >>> master.set('foo', 'bar') >>> slave = sentinel.slave_for('mymaster', socket_timeout=0.1) >>> slave.get('foo') b'bar' ``sentinels`` is a list of sentinel nodes. Each node is represented by a pair (hostname, port). ``min_other_sentinels`` defined a minimum number of peers for a sentinel. When querying a sentinel, if it doesn't meet this threshold, responses from that sentinel won't be considered valid. ``sentinel_kwargs`` is a dictionary of connection arguments used when connecting to sentinel instances. Any argument that can be passed to a normal Redis connection can be specified here. If ``sentinel_kwargs`` is not specified, any socket_timeout and socket_keepalive options specified in ``connection_kwargs`` will be used. ``connection_kwargs`` are keyword arguments that will be used when establishing a connection to a Redis server. rNc sD|dur dd|D}|_fdd|D_|_|_dS)NcSs i|] \}}|dr||qS)socket_) startswith).0kvrrr s z%Sentinel.__init__..cs$g|]\}}t||fijqSr)rsentinel_kwargs)rkhostnamer&r>rr sz%Sentinel.__init__..)itemsro sentinelsmin_other_sentinelsr])rrsrtror]rr>rrs   zSentinel.__init__cOsft|dd}d|vr|d|r#t|jj|i|dS|jD] }|j|i|q&dS)z Execute Sentinel command in sentinel nodes. once - If set to True, then execute the resulting command on a single node at random, rather than across the entire sentinel cluster. onceFT)rCr[keysrrRchoicersexecute_command)rargsrrusentinelrrrrxs   zSentinel.execute_commandcCsNg}|jD] }|d|jjqdt|jdt|jdd|dS)Nz {host}:{port}r r!z (sentinels=[,z])>) rsappend format_maprr]r#rrjoin)rsentinel_addressesrzrrrr*s  zSentinel.__repr__cCs2|dr |ds |drdS|d|jkrdSdS)Nr5is_sdownis_odownFznum-other-sentinelsT)rt)rstater$rrrcheck_master_states zSentinel.check_master_statec Cst}t|jD]N\}}z|}Wnttfy0}z||d|WYd}~qd}~ww||}|rV|||rV||jd|jd<|j|<|d|dfSqd}t |dkrgdd |}t d ||) z Asks sentinel servers for the Redis master's address corresponding to the service labeled ``service_name``. Returns a pair (address, port) or raises MasterNotFoundError if no master is found. z - Nripr&z : z, zNo master found for ) list enumeraterssentinel_mastersrr r|r[rrTr~r) rr$collected_errors sentinel_norzmasterser error_inforrrrOs(    zSentinel.discover_mastercCs:g}|D]}|ds|drq||d|dfq|S)z1Remove slaves that are in an ODOWN or SDOWN staterrrr&)r|)rrV slaves_aliver8rrr filter_slaves8s zSentinel.filter_slavesc CsN|jD]!}z||}Wn tttfyYqw||}|r$|SqgS)z;Returns a list of alive slaves for service ``service_name``)rssentinel_slavesrr r r)rr$rzrVrrrrQAs  zSentinel.discover_slavescK4d|d<t|j}||||||fi|S)a Returns a redis client instance for the ``service_name`` master. A :py:class:`~redis.sentinel.SentinelConnectionPool` class is used to retrieve the master's address before establishing a new connection. NOTE: If the master's address has changed, any cached connections to the old master are closed. By default clients will be a :py:class:`~redis.Redis` instance. Specify a different class to the ``redis_class`` argument if you desire something different. The ``connection_pool_class`` specifies the connection pool to use. The :py:class:`~redis.sentinel.SentinelConnectionPool` will be used by default. All other keyword arguments are merged with any connection_kwargs passed to this class and passed to the connection pool as keyword arguments to be used to initialize Redis connections. Tr5dictr]update from_poolrr$ redis_classconnection_pool_classrr]rrr master_forMs   zSentinel.master_forcKr)a Returns redis client instance for the ``service_name`` slave(s). A SentinelConnectionPool class is used to retrieve the slave's address before establishing a new connection. By default clients will be a :py:class:`~redis.Redis` instance. Specify a different class to the ``redis_class`` argument if you desire something different. The ``connection_pool_class`` specifies the connection pool to use. The SentinelConnectionPool will be used by default. All other keyword arguments are merged with any connection_kwargs passed to this class and passed to the connection pool as keyword arguments to be used to initialize Redis connections. Fr5rrrrr slave_forqs   zSentinel.slave_for)rN)rrrrfrrxr*rrOrrQrrXrrrrrrrhs"    'rh)rRrGtypingr redis.clientrredis.commandsrredis.connectionrrrredis.exceptionsrr r r redis.utilsr rrrrErFrXrhrrrrs    A0;