libervia-backend: src/tools/sat

annotate src/tools/sat_defer.py @ 1514:bad2e0e3fe70

tmp (wokkel): fixes changeset 91631837ce5c (rev 1510)

author	souliane <souliane@mailoo.org>
date	Thu, 10 Sep 2015 09:07:32 +0200
parents	227856b13d7a
children	e987325c14ef

rev	line source
1448 227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	1 #!/usr/bin/python
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	2 # -- coding: utf-8 --
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	3
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	4 # SàT: a XMPP client
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	6
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	7 # This program is free software: you can redistribute it and/or modify
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	8 # it under the terms of the GNU Affero General Public License as published by
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	9 # the Free Software Foundation, either version 3 of the License, or
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	10 # (at your option) any later version.
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	11
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	12 # This program is distributed in the hope that it will be useful,
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	15 # GNU Affero General Public License for more details.
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	16
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	17 # You should have received a copy of the GNU Affero General Public License
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	19
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	20 """tools related to deferred"""
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	21
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	22 from sat.core.log import getLogger
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	23 log = getLogger(__name__)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	24 from sat.core import exceptions
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	25 from twisted.internet import defer
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	26 from twisted.python import failure
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	27 from sat.core.constants import Const as C
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	28 from sat.memory import memory
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	29
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	30 KEY_DEFERREDS = 'deferreds'
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	31 KEY_NEXT = 'next_defer'
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	32
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	33
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	34 class RTDeferredSessions(memory.Sessions):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	35 """Real Time Deferred Sessions"""
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	36
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	37
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	38 def __init__(self, timeout=120):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	39 """Manage list of Deferreds in real-time, allowing to get intermediate results
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	40
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	41 @param timeout (int): nb of seconds before deferreds cancellation
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	42 """
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	43 super(RTDeferredSessions, self).__init__(timeout=timeout, resettable_timeout=False)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	44
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	45 def newSession(self, deferreds, profile):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	46 """Launch a new session with a list of deferreds
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	47
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	48 @param deferreds(list[defer.Deferred]): list of deferred to call
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	49 @param profile: %(doc_profile)s
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	50 @param return (tupe[str, defer.Deferred]): tuple with session id and a deferred wich fire WITHOUT RESULT when all results are received
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	51 """
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	52 data = {KEY_NEXT: defer.Deferred()}
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	53 session_id, session_data = super(RTDeferredSessions, self).newSession(data, profile=profile)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	54 if isinstance(deferreds, dict):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	55 session_data[KEY_DEFERREDS] = deferreds.values()
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	56 iterator = deferreds.iteritems()
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	57 else:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	58 session_data[KEY_DEFERREDS] = deferreds
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	59 iterator = enumerate(deferreds)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	60
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	61 for idx, d in iterator:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	62 d._RTDeferred_index = idx
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	63 d._RTDeferred_return = None
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	64 d.addCallback(self._callback, d, session_id, profile)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	65 d.addErrback(self._errback, d, session_id, profile)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	66 return session_id
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	67
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	68 def _purgeSession(self, session_id, reason=u"timeout", no_warning=False, got_result=False):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	69 """Purge the session
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	70
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	71 @param session_id(str): id of the session to purge
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	72 @param reason (unicode): human readable reason why the session is purged
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	73 @param no_warning(bool): if True, no warning will be put in logs
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	74 @param got_result(bool): True if the session is purged after normal ending (i.e.: all the results have been gotten).
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	75 reason and no_warning are ignored if got_result is True.
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	76 @raise KeyError: session doesn't exists (anymore ?)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	77 """
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	78 if not got_result:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	79 try:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	80 timer, session_data, profile = self._sessions[session_id]
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	81 except ValueError:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	82 raise exceptions.InternalError(u'was expecting timer, session_data and profile; is profile set ?')
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	83
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	84 # next_defer must be called before deferreds,
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	85 # else its callback will be called by _gotResult
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	86 next_defer = session_data[KEY_NEXT]
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	87 if not next_defer.called:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	88 next_defer.errback(failure.Failure(defer.CancelledError(reason)))
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	89
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	90 deferreds = session_data[KEY_DEFERREDS]
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	91 for d in deferreds:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	92 d.cancel()
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	93
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	94 if not no_warning:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	95 log.warning(u"RTDeferredList cancelled: {} (profile {})".format(reason, profile))
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	96
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	97 super(RTDeferredSessions, self)._purgeSession(session_id)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	98
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	99 def _gotResult(self, session_id, profile):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	100 """Method called after each callback or errback
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	101
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	102 manage the next_defer deferred
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	103 """
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	104 session_data = self.profileGet(session_id, profile)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	105 defer_next = session_data[KEY_NEXT]
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	106 if not defer_next.called:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	107 defer_next.callback(None)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	108
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	109 def _callback(self, result, deferred, session_id, profile):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	110 deferred._RTDeferred_return = (True, result)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	111 self._gotResult(session_id, profile)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	112
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	113 def _errback(self, failure, deferred, session_id, profile):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	114 deferred._RTDeferred_return = (False, failure)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	115 self._gotResult(session_id, profile)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	116
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	117 def cancel(self, session_id, reason=u"timeout", no_log=False):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	118 """Stop this RTDeferredList
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	119
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	120 Cancel all remaining deferred, and call self.final_defer.errback
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	121 @param reason (unicode): reason of the cancellation
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	122 @param no_log(bool): if True, don't log the cancellation
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	123 """
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	124 self._purgeSession(session_id, reason=reason, no_warning=no_log)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	125
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	126 def getResults(self, session_id, on_success=None, on_error=None, profile=C.PROF_KEY_NONE):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	127 """Get current results of a real-time deferred session
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	128
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	129 result already gotten are deleted
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	130 @param session_id(str): session id
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	131 @param on_success: can be:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	132 - None: add success normaly to results
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	133 - callable: replace result by the return value of on_success(result) (may be deferred)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	134 @param on_error: can be:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	135 - None: add error normaly to results
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	136 - C.IGNORE: don't put errors in results
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	137 - callable: replace failure by the return value of on_error(failure) (may be deferred)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	138 @param profile=%(doc_profile)s
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	139 @param result(tuple): tuple(remaining, results) where:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	140 - remaining[int] is the number of remaining deferred
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	141 (deferreds from which we don't have result yet)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	142 - results is a dict where:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	143 - key is the index of the deferred if deferred is a list, or its key if it's a dict
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	144 - value = (success, result) where:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	145 - success is True if the deferred was successful
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	146 - result is the result in case of success, else the failure
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	147 If remaining == 0, the session is ended
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	148 @raise KeyError: the session is already finished or doesn't exists at all
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	149 """
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	150 if profile == C.PROF_KEY_NONE:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	151 raise exceptions.ProfileNotSetError
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	152 session_data = self.profileGet(session_id, profile)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	153
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	154 @defer.inlineCallbacks
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	155 def next_cb(dummy):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	156 # we got one or several results
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	157 results = {}
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	158 filtered_data = [] # used to keep deferreds without results
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	159 deferreds = session_data[KEY_DEFERREDS]
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	160
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	161 for d in deferreds:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	162 if d._RTDeferred_return: # we don't use d.called as called is True before the full callbacks chain has been called
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	163 # we have a result
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	164 idx = d._RTDeferred_index
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	165 success, result = d._RTDeferred_return
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	166 if success:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	167 if on_success is not None:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	168 if callable(on_success):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	169 result = yield on_success(result)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	170 else:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	171 raise exceptions.InternalError('Unknown value of on_success: {}'.format(on_success))
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	172
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	173 else:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	174 if on_error is not None:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	175 if on_error == C.IGNORE:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	176 continue
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	177 elif callable(on_error):
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	178 result = yield on_error(result)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	179 else:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	180 raise exceptions.InternalError('Unknown value of on_error: {}'.format(on_error))
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	181 results[idx] = (success, result)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	182 else:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	183 filtered_data.append(d)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	184
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	185 # we change the deferred with the filtered list
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	186 # in other terms, we don't want anymore deferred from which we have got the result
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	187 session_data[KEY_DEFERREDS] = filtered_data
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	188
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	189 if filtered_data:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	190 # we create a new next_defer only if we are still waiting for results
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	191 session_data[KEY_NEXT] = defer.Deferred()
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	192 else:
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	193 # no more data to get, the result have been gotten,
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	194 # we can cleanly finish the session
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	195 self._purgeSession(session_id, got_result=True)
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	196
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	197 defer.returnValue((len(filtered_data), results))
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	198
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	199 # we wait for a result
227856b13d7a core: new tools.sat_defer module, and implementation of RTDeferredSessions: Goffi <goffi@goffi.org> parents: diff changeset	200 return session_data[KEY_NEXT].addCallback(next_cb)

Mercurial > libervia-backend

annotate src/tools/sat_defer.py @ 1514:bad2e0e3fe70