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root/cvsroot/COMP/CRAB/python/DLSInfo.py

Comparing COMP/CRAB/python/DLSInfo.py (file contents):
Revision 1.1 by afanfani, Mon Nov 7 23:20:21 2005 UTC vs.
Revision 1.14 by slacapra, Wed Jan 17 18:17:58 2007 UTC

#	Line 1 | Line 1
1		#!/usr/bin/env python
2		import sys, os, commands,string, re
3	+	import exceptions
4	+	from crab_exceptions import *
5		from crab_util import *
6		import common
7
8	+	import dlsApi
9	+	import dlsClient
10	+	from dlsDataObjects import DlsLocation, DlsFileBlock, DlsEntry
11	+
12	+	## for python 2.2 add the pyexpat.so to PYTHONPATH
13	+	pythonV=sys.version.split(' ')[0]
14	+	if pythonV.find('2.2') >= 0 :
15	+	Crabpydir=commands.getoutput('which crab')
16	+	Topdir=string.replace(Crabpydir,'/python/crab','')
17	+	extradir=Topdir+'/DLSAPI/extra'
18	+	if sys.path.count(extradir) <= 0:
19	+	if os.path.exists(extradir):
20	+	sys.path.insert(0, extradir)
21	+
22	+
23		class DLSError:
24	<	def __init__(self, fileblocks):
25	<	print '\nERROR accessing DLS for fileblock '+fileblocks+'\n'
26	<	pass
24	>	def __init__(self, fileblocks):
25	>	print '\nERROR accessing DLS for fileblock '+fileblocks+'\n'
26	>	pass
27	>
28	>
29	>	class DLSNoReplicas(exceptions.Exception):
30	>	def __init__(self, FileBlock):
31	>	exceptions.Exception.__init__(self, self.args)
32	>	self.args ="No replicas exists for fileblock: "+FileBlock+"\n"
33	>	pass
34	>
35	>	def getClassName(self):
36	>	""" Return class name. """
37	>	return "%s" % (self.__class__.__name__)
38	>
39	>	def getErrorMessage(self):
40	>	""" Return exception error. """
41	>	return "%s" % (self.args)
42	>
43
44		##############################################################################
45		# Class to extract info from DLS
46		##############################################################################
47
48		class DLSInfo:
49	<	def __init__(self, fileblocks):
50	<	self.fileblocks = fileblocks
51	<	self.DLSclient_ = 'DLSAPI/dls-get-se '
52	<	self.DLSServer_ = 'cmsbogw.bo.infn.it'
49	>	def __init__(self, type, cfg_params):
50	>	self.cfg_params = cfg_params
51	>	if type=="DLS_TYPE_DLI":
52	>	try:
53	>	endpoint=self.cfg_params['CMSSW.dls_endpoint']
54	>	except KeyError:
55	>	endpoint="prod-lfc-cms-central.cern.ch/grid/cms/DLS/LFC"
56	>
57	>	try:
58	>	import xml.dom.ext.reader
59	>	except:
60	>	crabdir=os.getenv('CRABDIR')
61	>	## Let the  user set up PyXML by hand
62	>	msg="There is no setup of PyXML python module required by DLS (DLI). Do the following:\n"
63	>	msg+=" - check that in  %s/configure  the function configureDLSAPI is not commented \n"%crabdir
64	>	msg+=" - uncomment it and re-run the configuration :"
65	>	msg+="\n    cd %s\n"%crabdir
66	>	msg+="     ./configure\n"
67	>	msg+="     source crab.(c)sh\n"
68	>	raise CrabException(msg)
69	>
70	>	elif type=="DLS_TYPE_MYSQL":
71	>	try:
72	>	endpoint=self.cfg_params['CMSSW.dls_endpoint']
73	>	except KeyError:
74	>	endpoint="lxgate10.cern.ch:18081"
75	>	else:
76	>	msg = "DLS type %s not among the supported DLS ( DLS_TYPE_DLI and DLS_TYPE_MYSQL ) "%type
77	>	raise CrabException(msg)
78
79	+	common.logger.debug(5,"DLS interface: %s Server %s"%(type,endpoint))
80	+	try:
81	+	self.api = dlsClient.getDlsApi(dls_type=type,dls_endpoint=endpoint)
82	+	except dlsApi.DlsApiError, inst:
83	+	msg = "Error when binding the DLS interface: %s  Server %s"%(str(inst),endpoint)
84	+	#print msg
85	+	raise CrabException(msg)
86	+
87		# ####################################
88	<	def getReplicas(self):
89	<	"""
90	<	query DLS to get replicas
91	<	"""
92	<	##
93	<	cmd = self.DLSclient_+" --host "+self.DLSServer_+" --datablock "+self.fileblocks
94	<	#print cmd
95	<	sites = runCommand(cmd)
96	<	ListSites=string.split(sites,'\n')
97	<	return ListSites
88	>	def getReplicas(self,fileblocks):
89	>	"""
90	>	query DLS to get replicas
91	>	"""
92	>	##
93	>	try:
94	>	entryList=self.api.getLocations([fileblocks])
95	>	except dlsApi.DlsApiError, inst:
96	>	#msg = "Error in the DLS query: %s." % str(inst)
97	>	#print msg
98	>	raise DLSNoReplicas(fileblocks)
99	>
100	>	ListSites=[]
101	>	for entry in entryList:
102	>	for loc in entry.locations:
103	>	ListSites.append(str(loc.host))
104	>	if len(ListSites)<=0:
105	>	raise DLSNoReplicas(fileblocks)
106	>
107	>	return ListSites

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