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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 1.8 by afanfani, Tue May 30 23:33:58 2006 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	+	try:
9	+	import dlsApi
10	+	import dlsClient
11	+	from dlsDataObjects import DlsLocation, DlsFileBlock, DlsEntry
12	+	except:
13	+	try:
14	+	Crabpydir=commands.getoutput('which crab')
15	+	Topdir=string.replace(Crabpydir,'/python/crab','')
16	+	sys.path.append(Topdir+'/DLSAPI')
17	+	import dlsApi
18	+	import dlsClient
19	+	from dlsDataObjects import DlsLocation, DlsFileBlock, DlsEntry
20	+	except:
21	+	msg="ERROR no DLS API available"
22	+	raise CrabException(msg)
23	+
24	+	## for python 2.2 add the pyexpat.so to PYTHONPATH
25	+	pythonV=sys.version.split(' ')[0]
26	+	if pythonV.find('2.2') >= 0 :
27	+	Crabpydir=commands.getoutput('which crab')
28	+	Topdir=string.replace(Crabpydir,'/python/crab','')
29	+	extradir=Topdir+'/DLSAPI/extra'
30	+	if sys.path.count(extradir) <= 0:
31	+	if os.path.exists(extradir):
32	+	sys.path.insert(0, extradir)
33	+
34	+
35		class DLSError:
36	<	def __init__(self, fileblocks):
37	<	print '\nERROR accessing DLS for fileblock '+fileblocks+'\n'
38	<	pass
36	>	def __init__(self, fileblocks):
37	>	print '\nERROR accessing DLS for fileblock '+fileblocks+'\n'
38	>	pass
39	>
40	>
41	>	class DLSNoReplicas(exceptions.Exception):
42	>	def __init__(self, FileBlock):
43	>	args ="No replicas exists for fileblock: "+FileBlock+"\n"
44	>	exceptions.Exception.__init__(self, args)
45	>	pass
46	>
47	>	def getClassName(self):
48	>	""" Return class name. """
49	>	return "%s" % (self.__class__.__name__)
50	>
51	>	def getErrorMessage(self):
52	>	""" Return exception error. """
53	>	return "%s" % (self.args)
54	>
55
56		##############################################################################
57		# Class to extract info from DLS
58		##############################################################################
59
60		class DLSInfo:
61	<	def __init__(self, fileblocks):
62	<	self.fileblocks = fileblocks
63	<	self.DLSclient_ = 'DLSAPI/dls-get-se '
64	<	self.DLSServer_ = 'cmsbogw.bo.infn.it'
61	>	def __init__(self, type):
62	>	if type=="DLS_TYPE_DLI":
63	>	endpoint="lfc-cms-test.cern.ch/grid/cms/DLS/LFCProto"
64	>	try:
65	>	import xml.dom.ext.reader
66	>	except:
67	>	crabdir=os.getenv('CRABDIR')
68	>	## Let the user set up PyXML by hand
69	>	msg="There is no setup of PyXML python module required by DLS (DLI). Do the following:\n"
70	>	msg+=" - check that in  %s/configure  the function configureDLSAPI is not commented \n"%crabdir
71	>	msg+=" - uncomment it and re-run the configuration :"
72	>	msg+="\n    cd %s\n"%crabdir
73	>	msg+="     ./configure\n"
74	>	msg+="     source crab.(c)sh\n"
75	>	raise CrabException(msg)
76	>
77	>	elif type=="DLS_TYPE_MYSQL":
78	>	endpoint="lxgate10.cern.ch:18081"
79	>	else:
80	>	msg = "DLS type %s not among the supported DLS ( DLS_TYPE_DLI and DLS_TYPE_MYSQL ) "%type
81	>	raise CrabException(msg)
82	>
83	>	try:
84	>	self.api = dlsClient.getDlsApi(dls_type=type,dls_endpoint=endpoint)
85	>	except dlsApi.DlsApiError, inst:
86	>	msg = "Error when binding the DLS interface: %s  Server %s"%(str(inst),self.DLSServer_)
87	>	#print msg
88	>	raise CrabException(msg)
89
90		# ####################################
91	<	def getReplicas(self):
92	<	"""
93	<	query DLS to get replicas
94	<	"""
95	<	##
96	<	cmd = self.DLSclient_+" --host "+self.DLSServer_+" --datablock "+self.fileblocks
97	<	#print cmd
98	<	sites = runCommand(cmd)
99	<	ListSites=string.split(sites,'\n')
100	<	return ListSites
91	>	def getReplicas(self,fileblocks):
92	>	"""
93	>	query DLS to get replicas
94	>	"""
95	>	##
96	>	try:
97	>	entryList=self.api.getLocations([fileblocks])
98	>	except dlsApi.DlsApiError, inst:
99	>	msg = "Error in the DLS query: %s." % str(inst)
100	>	#print msg
101	>	raise DLSNoReplicas(fileblocks)
102	>
103	>	ListSites=[]
104	>	for entry in entryList:
105	>	for loc in entry.locations:
106	>	ListSites.append(str(loc.host))
107	>	if len(ListSites)<=0:
108	>	raise DLSNoReplicas(fileblocks)
109	>
110	>	return ListSites

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