Ytj dZddlmZddlZddlZddlmZddlmZ ddl m Z m Z ddl mZmZmZmZejd ZddZddZdS)z8 Separate connection attempts from a connection string. ) annotationsN)shuffle)errors)ConnDict ConnMapping) get_param get_param_def is_ip_addresssplit_attemptspsycopgparamsrreturnlist[ConnDict]cd}g}t|ddkx}rd|D}t|D]} |t |&#t $rR}t jd|dd|}t d|Yd}~}d}~wwxYw|s|sJ|t|d d krt||rd |D|z}|S) aSplit a set of connection params on the single attempts to perform. A connection param can perform more than one attempt more than one ``host`` is provided. Also perform async resolution of the hostname into hostaddr. Because a host can resolve to more than one address, this can lead to yield more attempts too. Raise `OperationalError` if no host could be resolved. Because the libpq async function doesn't honour the timeout, we need to reimplement the repeated attempts. Ntarget_session_attrszprefer-standbyc&i|]\}}|dk ||S)r).0kvs X/var/www/html/CA-Chatbot/venv/lib/python3.11/site-packages/psycopg/_conninfo_attempts.py z%conninfo_attempts..)s)QQQ41aQ:P5P5P!Q5P5P5Pzfailed to resolve host hostz: z%sload_balance_hostsrandomcg|] }i|ddi S)rstandbyr)ras r z%conninfo_attempts..?s6   9: 4q 4() 4 4   r) r itemsr extend_resolve_hostnamesOSErroreOperationalErrorgetloggerdebugr)rlast_excattemptsprefer_standbyattemptexs rconninfo_attemptsr0soHH&0115EE~RRQ6<<>>QQQ!&)))) ) OO.w77 8 8 8 8 ) ) ))G'++f*=*=GG2GGH LLx ( ( ( ( ( ( ( (  ) x-..(::  >F    Os "A.. C 8ACC rctd}|r#|ds|dddkrgStdrgSt|r id|igStdx}std}|r|jpd}t j||t jt j }fd |DS) aD Perform async DNS lookup of the hosts and return a list of connection attempts. If a ``host`` param is present but not ``hostname``, resolve the host addresses asynchronously. :param params: The input parameters, for instance as returned by `~psycopg.conninfo.conninfo_to_dict()`. The function expects at most a single entry for host, hostaddr because it is designed to further process the input of split_attempts(). :return: A list of attempts to make (to include the case of a hostname resolving to more than one IP). r/r:hostaddrport5432)prototypec8g|]}id|ddiS)r5rr)ritemrs rr!z&_resolve_hostnames..js1 ? ? ?4 .v .z471: . . ? ? ?r) r startswithr r compiledsocket getaddrinfo IPPROTO_TCP SOCK_STREAM)rrr6port_defanss` rr$r$Fs VV $ $D 4??3''4!9+;+;x$$xT.,6,:t,,--ff-- -D8 ((-H-7   d&,63E   C @ ? ? ?3 ? ? ??r)rrrr)rrrr)__doc__ __future__rr?loggingrrrr&abcrr_conninfo_utilsr r r r getLoggerr)r0r$rrrrLs #""""" &&&&&&&&TTTTTTTTTTTT  9 % %,,,,^$@$@$@$@$@$@r