# copyright 2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr## This file is part of CubicWeb.## CubicWeb is free software: you can redistribute it and/or modify it under the# terms of the GNU Lesser General Public License as published by the Free# Software Foundation, either version 2.1 of the License, or (at your option)# any later version.## CubicWeb is distributed in the hope that it will be useful, but WITHOUT# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more# details.## You should have received a copy of the GNU Lesser General Public License along# with CubicWeb. If not, see <http://www.gnu.org/licenses/>."""looping task for dumping instance's stats in a file"""__docformat__="restructuredtext en"fromdatetimeimportdatetimeimportjsonfromcubicweb.serverimporthookclassLogStatsStartHook(hook.Hook):"""register task to regularly dump instance's stats in a file data are stored as one json entry per row """__regid__='cubicweb.hook.logstats.start'events=('server_startup',)def__call__(self):interval=self.repo.config.get('logstat-interval',0)ifinterval<=0:returndefdump_stats(repo):statsfile=repo.config.get('logstat-file')withrepo.internal_cnx()ascnx:stats=cnx.call_service('repo_stats')gcstats=cnx.call_service('repo_gc_stats',nmax=5)allstats={'resources':stats,'memory':gcstats,'timestamp':datetime.utcnow().isoformat(),}try:withopen(statsfile,'ab')asofile:json.dump(allstats,ofile)ofile.write('\n')exceptIOError:repo.warning('Cannot open stats file for writing: %s',statsfile)self.repo.looping_task(interval,dump_stats,self.repo)