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

Comparing COMP/CRAB/python/PhEDExDatasvcInfo.py (file contents):
Revision 1.1 by afanfani, Wed Jun 25 12:03:43 2008 UTC vs.
Revision 1.10 by fanzago, Mon Oct 13 09:57:06 2008 UTC

#	Line 1 | Line 1
1	<	#!/usr/bin/env python
2	<
1	>	from Actor import *
2		import urllib
3		from xml.dom.minidom import parse
4		from crab_exceptions import *
5	+	from crab_logger import Logger
6	+	from WorkSpace import *
7	+	from urlparse import urlparse
8	+	from LFNBaseName import *
9
10		class PhEDExDatasvcInfo:
11	<	"""
12	<	provides information from PhEDEx Data Service
13	<	"""
14	<	# PhEDEx Data Service URL
15	<	datasvc_url="https://cmsweb.cern.ch/phedex/test/datasvc/xml/prod"
11	>	def __init__( self , cfg_params ):
12	>
13	>	## PhEDEx Data Service URL
14	>	url="https://cmsweb.cern.ch/phedex/datasvc/xml/prod"
15	>	self.datasvc_url = cfg_params.get("USER.datasvc_url",url)
16	>
17	>	self.FacOps_savannah = 'https://savannah.cern.ch/support/?func=additem&group=cmscompinfrasup'
18	>
19	>
20	>	self.srm_version = cfg_params.get("USER.srm_version",'srmv2')
21	>	self.node = cfg_params.get('USER.storage_element',None)
22	>
23	>	self.publish_data = cfg_params.get("USER.publish_data",0)
24	>	self.usenamespace = cfg_params.get("USER.usenamespace",0)
25	>	self.user_remote_dir = cfg_params.get("USER.user_remote_dir",'')
26	>	if self.user_remote_dir:
27	>	if ( self.user_remote_dir[-1] != '/' ) : self.user_remote_dir = self.user_remote_dir + '/'
28	>
29	>	self.datasetpath = cfg_params.get("CMSSW.datasetpath")
30	>	self.publish_data_name = cfg_params.get('USER.publish_data_name','')
31	>
32	>	self.user_lfn = cfg_params.get("USER.lfn",'')
33	>	if self.user_lfn:
34	>	if ( self.user_lfn[-1] != '/' ) : self.user_lfn = self.user_lfn + '/'
35	>
36	>	self.user_port = cfg_params.get("USER.storage_port",'8443')
37	>	self.user_se_path = cfg_params.get("USER.storage_path",'')
38	>	if self.user_se_path:
39	>	if ( self.user_se_path[-1] != '/' ) : self.user_se_path = self.user_se_path + '/'
40	>
41	>
42	>	#check if using "private" Storage
43	>	self.usePhedex = True
44	>	if (self.node.find('T1_') + self.node.find('T2_')+self.node.find('T3_')) == -3: self.usePhedex = False
45	>	if not self.usePhedex and ( self.user_lfn == '' or self.user_se_path == '' ):
46	>	msg = 'You are asking to stage out without using CMS Storage Name convention. In this case you \n'
47	>	msg += '      must specify both lfn and storage_path in the crab.cfg section [USER].\n '
48	>	msg += '      For further information please visit: ADD_TWIKI_LINK'
49	>	raise CrabException(msg)
50	>	self.sched = common.scheduler.name().upper()
51	>	self.protocol = self.srm_version
52	>	if self.sched in ['CAF','LSF']:self.protocol = 'direct'
53	>
54	>	return
55	>
56	>	def getEndpoint(self):
57	>	'''
58	>	Return full SE endpoint and related infos
59	>	'''
60	>	self.lfn = self.getLFN()
61	>
62	>	#extract the PFN for the given node,LFN,protocol
63	>	endpoint = self.getStageoutPFN()
64	>
65	>	#extract SE name an SE_PATH (needed for publication)
66	>	SE, SE_PATH, User = self.splitEndpoint(endpoint)
67	>
68	>	return endpoint, self.lfn , SE, SE_PATH, User
69	>
70	>	def splitEndpoint(self, endpoint):
71	>	'''
72	>	Return relevant infos from endpoint
73	>	'''
74	>	SE = ''
75	>	SE_PATH = ''
76	>	USER = ''
77	>	if self.usePhedex:
78	>	if self.protocol == 'direct':
79	>	query=endpoint
80	>	SE_PATH = endpoint
81	>	### FEDE added SE ###
82	>	SE = self.sched
83	>	else:
84	>	url = 'http://'+endpoint.split('://')[1]
85	>	# python > 2.4
86	>	# SE = urlparse(url).hostname
87	>	scheme, host, path, params, query, fragment = urlparse(url)
88	>	SE = host.split(':')[0]
89	>	SE_PATH = endpoint.split(host)[1]
90	>	USER = (query.split('user')[1]).split('/')[1]
91	>	else:
92	>	SE = self.node
93	>	SE_PATH = self.user_se_path + self.user_lfn
94	>	try:
95	>	USER = (self.lfn.split('user')[1]).split('/')[1]
96	>	except:
97	>	pass
98	>
99	>	return SE, SE_PATH, USER
100	>
101	>
102	>	def getLFN(self):
103	>	"""
104	>	define the LFN composing the needed pieces
105	>	"""
106	>	lfn = ''
107	>	l_User = False
108	>	if not self.usePhedex and (int(self.publish_data) == 0 and int(self.usenamespace) == 0) :
109	>	### add here check if user is trying to force a wrong LFN using a T2  TODO
110	>	## check if storage_name is a T2 (siteDB query)
111	>	## if yes :match self.user_lfn with LFNBaseName...
112	>	##     if NOT : raise (you are using a T2. It's not allowed stage out into self.user_path+self.user_lfn)
113	>	lfn = self.user_lfn
114	>	return lfn
115	>	if self.publish_data_name == '' and int(self.publish_data) == 1:
116	>	msg = "Eeror. The [USER] section does not have 'publish_data_name'"
117	>	raise CrabException(msg)
118	>	if self.publish_data_name == '' and int(self.usenamespace) == 1:
119	>	self.publish_data_name = "DefaultDataset"
120	>	if int(self.publish_data) == 1 or int(self.usenamespace) == 1:
121	>	if self.sched in ['CAF']: l_User=True
122	>	primaryDataset = self.computePrimaryDataset()
123	>	lfn = LFNBase(primaryDataset,self.publish_data_name,LocalUser=l_User)  + '/${PSETHASH}/'
124	>	else:
125	>	if self.sched in ['CAF','LSF']: l_User=True
126	>	lfn = LFNBase(self.user_remote_dir,LocalUser=l_User)
127	>	return lfn
128	>
129	>	def computePrimaryDataset(self):
130	>	"""
131	>	compute the last part for the LFN in case of publication
132	>	"""
133	>	if (self.datasetpath.upper() != 'NONE'):
134	>	primarydataset = self.datasetpath.split("/")[1]
135	>	else:
136	>	primarydataset = self.publish_data_name
137	>	return primarydataset
138
139	<	def lfn2pfn(self,node,lfn,protocol):
140	<	"""
141	<	PhEDEx Data Service lfn2pfn call
142	<
143	<	input:   LFN,node name,protocol
144	<	returns: DOM object with the content of the PhEDEx Data Service call
145	<	"""
146	<	params = {'node' : node , 'lfn': lfn , 'protocol': protocol}
147	<	params = urllib.urlencode(params)
148	<	#print params
149	<	datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
150	<	urlresults = urllib.urlopen(datasvc_lfn2pfn, params)
151	<	try:
152	<	urlresults = parse(urlresults)
153	<	except:
154	<	urlresults = None
155	<	return urlresults
156	<
157	<	def parse_error(self,urlresults):
158	<	"""
159	<	look for errors in the DOM object returned by PhEDEx Data Service call
160	<	"""
161	<	errormsg = None
162	<	errors=urlresults.getElementsByTagName('error')
163	<	for error in errors:
164	<	errormsg=error.childNodes[0].data
165	<	if len(error.childNodes)>1:
166	<	errormsg+=error.childNodes[1].data
167	<	return errormsg
43	<
44	<	def parse_lfn2pfn(self,urlresults):
45	<	"""
46	<	Parse the content of the result of lfn2pfn PhEDEx Data Service  call
47	<
48	<	input:    DOM object with the content of the lfn2pfn call
49	<	returns:  PFN
50	<	"""
51	<	result = urlresults.getElementsByTagName('phedex')
52	<	if not result:
53	<	return []
54	<	result = result[0]
55	<	pfn = None
56	<	mapping = result.getElementsByTagName('mapping')
57	<	for m in mapping:
58	<	pfn=m.getAttribute("pfn")
59	<	if pfn:
60	<	return pfn
61	<
62	<	def getStageoutPFN(self,node,lfn,protocol):
63	<	"""
64	<	input:   LFN,node name,protocol
65	<	returns: PFN
66	<	"""
67	<	fullurl="%s/lfn2pfn?node=%s&lfn=%s&protocol=%s"%(self.datasvc_url,node,lfn,protocol)
68	<	domlfn2pfn = self.lfn2pfn(node,lfn,protocol)
69	<	if not domlfn2pfn :
70	<	msg="Unable to get info from %s"%fullurl
71	<	raise CrabException(msg)
72	<
73	<	errormsg = self.parse_error(domlfn2pfn)
74	<	if errormsg:
75	<	msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
76	<	raise CrabException(msg)
77	<
78	<	stageoutpfn = self.parse_lfn2pfn(domlfn2pfn)
79	<	if not stageoutpfn:
80	<	msg="Unable to get stageout path (PFN) from %s"%fullurl
81	<	raise CrabException(msg)
82	<	return stageoutpfn
83	<
84	<
85	<	if __name__ == '__main__' :
86	<	"""
87	<	"""
88	<	from crab_logger import Logger
89	<	from WorkSpace import *
90	<	continue_dir="/home/fanfani/CRAB"
91	<	cfg_params={'USER.logdir' : continue_dir }
92	<	common.work_space = WorkSpace(continue_dir, cfg_params)
93	<	log = Logger()
94	<	common.logger = log
95	<
96	<	from LFNBaseName import *
97	<	# test values
98	<	lfn = LFNBase("datasetstring")
99	<	node='T2_IT_Bari'
100	<	protocol="srmv2"
101	<
102	<	#create an instance of the PhEDExDatasvcInfo object
103	<	dsvc = PhEDExDatasvcInfo()
104	<	#extract the PFN for the given node,LFN,protocol
105	<	print "Stageout to %s"%dsvc.getStageoutPFN(node,lfn,protocol)
139	>	def lfn2pfn(self):
140	>	"""
141	>	PhEDEx Data Service lfn2pfn call
142	>
143	>	input:   LFN,node name,protocol
144	>	returns: DOM object with the content of the PhEDEx Data Service call
145	>	"""
146	>	params = {'node' : self.node , 'lfn': self.lfn , 'protocol': self.protocol}
147	>	params = urllib.urlencode(params)
148	>	datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
149	>	urlresults = urllib.urlopen(datasvc_lfn2pfn, params)
150	>	try:
151	>	urlresults = parse(urlresults)
152	>	except:
153	>	urlresults = None
154	>
155	>	return urlresults
156	>
157	>	def parse_error(self,urlresults):
158	>	"""
159	>	look for errors in the DOM object returned by PhEDEx Data Service call
160	>	"""
161	>	errormsg = None
162	>	errors=urlresults.getElementsByTagName('error')
163	>	for error in errors:
164	>	errormsg=error.childNodes[0].data
165	>	if len(error.childNodes)>1:
166	>	errormsg+=error.childNodes[1].data
167	>	return errormsg
168
169	+	def parse_lfn2pfn(self,urlresults):
170	+	"""
171	+	Parse the content of the result of lfn2pfn PhEDEx Data Service  call
172	+
173	+	input:    DOM object with the content of the lfn2pfn call
174	+	returns:  PFN
175	+	"""
176	+	result = urlresults.getElementsByTagName('phedex')
177	+
178	+	if not result:
179	+	return []
180	+	result = result[0]
181	+	pfn = None
182	+	mapping = result.getElementsByTagName('mapping')
183	+	for m in mapping:
184	+	pfn=m.getAttribute("pfn")
185	+	if pfn:
186	+	return pfn
187	+
188	+	def getStageoutPFN( self ):
189	+	"""
190	+	input:   LFN,node name,protocol
191	+	returns: PFN
192	+	"""
193	+	if self.usePhedex:
194	+	fullurl="%s/lfn2pfn?node=%s&lfn=%s&protocol=%s"%(self.datasvc_url,self.node,self.lfn,self.protocol)
195	+	domlfn2pfn = self.lfn2pfn()
196	+	if not domlfn2pfn :
197	+	msg="Unable to get info from %s"%fullurl
198	+	raise CrabException(msg)
199	+
200	+	errormsg = self.parse_error(domlfn2pfn)
201	+	if errormsg:
202	+	msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
203	+	raise CrabException(msg)
204	+
205	+	stageoutpfn = self.parse_lfn2pfn(domlfn2pfn)
206	+	if not stageoutpfn:
207	+	msg ='Unable to get stageout path from TFC at Site %s \n'%self.node
208	+	msg+='      Please alert the CompInfraSup group through their savannah %s \n'%self.FacOps_savannah
209	+	msg+='      reporting: \n'
210	+	msg+='       Summary: Unable to get user stageout from TFC at Site %s \n'%self.node
211	+	msg+='       OriginalSubmission: stageout path is not retrieved from %s \n'%fullurl
212	+	raise CrabException(msg)
213	+	else:
214	+	stageoutpfn = 'srm://'+self.node+':'+self.user_port+self.user_se_path+self.lfn
215	+
216	+	return stageoutpfn
217	+
218	+
219	+
220	+	if __name__ == '__main__':
221	+	"""
222	+	Sort of unit testing to check Phedex API for whatever site and/or lfn.
223	+	Usage:
224	+	python PhEDExDatasvcInfo.py --node T2_IT_Bari --lfn /store/maremma
225	+
226	+	"""
227	+	import getopt,sys
228	+	from crab_util import *
229	+	import common
230	+	klass_name = 'SchedulerGlite'
231	+	klass = importName(klass_name, klass_name)
232	+	common.scheduler = klass()
233	+
234	+	lfn="/store/user/"
235	+	node='T2_IT_Bari'
236	+	valid = ['node=','lfn=']
237	+	try:
238	+	opts, args = getopt.getopt(sys.argv[1:], "", valid)
239	+	except getopt.GetoptError, ex:
240	+	print str(ex)
241	+	sys.exit(1)
242	+	for o, a in opts:
243	+	if o == "--node":
244	+	node = a
245	+	if o == "--lfn":
246	+	lfn = a
247	+
248	+	mycfg_params = { 'USER.storage_element': node }
249	+	dsvc = PhEDExDatasvcInfo(mycfg_params)
250	+	dsvc.lfn = lfn
251	+	print dsvc.getStageoutPFN()
252	+

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