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#!/usr/bin/env python
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import sys, os, commands,string, re
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import exceptions
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from crab_exceptions import *
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from crab_util import *
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import common
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import dlsApi
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import dlsClient
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from dlsDataObjects import DlsLocation, DlsFileBlock, DlsEntry
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# ## for python 2.2 add the pyexpat.so to PYTHONPATH
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# pythonV=sys.version.split(' ')[0]
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# if pythonV.find('2.2') >= 0 :
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# Crabpydir=commands.getoutput('which crab')
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# Topdir=string.replace(Crabpydir,'/python/crab','')
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# extradir=Topdir+'/DLSAPI/extra'
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# if sys.path.count(extradir) <= 0:
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# if os.path.exists(extradir):
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# sys.path.insert(0, extradir)
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class DLSError:
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def __init__(self, fileblocks):
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print '\nERROR accessing DLS for fileblock '+fileblocks+'\n'
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pass
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class DLSNoReplicas(exceptions.Exception):
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def __init__(self, FileBlock):
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self.args ="No replicas exists for fileblock: "+FileBlock+"\n"
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exceptions.Exception.__init__(self, self.args)
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pass
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def getClassName(self):
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""" Return class name. """
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return "%s" % (self.__class__.__name__)
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def getErrorMessage(self):
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""" Return exception error. """
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return "%s" % (self.args)
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##############################################################################
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# Class to extract info from DLS
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##############################################################################
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class DLSInfo:
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def __init__(self, type, cfg_params):
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self.cfg_params = cfg_params
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if type=="DLS_TYPE_DBS":
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#
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# use dbs_url as dls_endpoint if dls_type is dbs
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#
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try:
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endpoint=self.cfg_params['CMSSW.dbs_url']
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except KeyError:
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endpoint="http://cmsdbsprod.cern.ch/cms_dbs_prod_global/servlet/DBSServlet"
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else:
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msg = "DLS type %s not among the supported DLS ( DLS_TYPE_DLI and DLS_TYPE_MYSQL ) "%type
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raise CrabException(msg)
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common.logger.debug(5,"DLS interface: %s Server %s"%(type,endpoint))
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try:
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self.api = dlsClient.getDlsApi(dls_type=type,dls_endpoint=endpoint)
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except dlsApi.DlsApiError, inst:
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msg = "Error when binding the DLS interface: %s Server %s"%(str(inst),endpoint)
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#print msg
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raise CrabException(msg)
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# ####################################
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def getReplicas(self,fileblocks):
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"""
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query DLS to get replicas
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"""
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##
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try:
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entryList=self.api.getLocations([fileblocks])
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except dlsApi.DlsApiError, inst:
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#msg = "Error in the DLS query: %s." % str(inst)
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#print msg
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raise DLSNoReplicas(fileblocks)
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ListSites=[]
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for entry in entryList:
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for loc in entry.locations:
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ListSites.append(str(loc.host))
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if len(ListSites)<=0:
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raise DLSNoReplicas(fileblocks)
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return ListSites
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