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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 1.22 by spiga, Tue Mar 31 23:43:22 2009 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	>	stage_out_faq='https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideCrabFaq#How_to_store_output_with_CRAB_2'
19	>	self.dataPub_faq = 'https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideCrabForPublication'
20	>
21	>	self.srm_version = cfg_params.get("USER.srm_version",'srmv2')
22	>	self.node = cfg_params.get('USER.storage_element',None)
23	>
24	>
25	>
26	>	self.user_lfn = cfg_params.get("USER.lfn",'')
27	>	self.publish_data = cfg_params.get("USER.publish_data",0)
28	>	self.usenamespace = cfg_params.get("USER.usenamespace",0)
29	>	self.user_remote_dir = cfg_params.get("USER.user_remote_dir",'')
30	>	if self.user_remote_dir:
31	>	if ( self.user_remote_dir[-1] != '/' ) : self.user_remote_dir = self.user_remote_dir + '/'
32	>	if self.user_lfn:
33	>	msg  = 'Warning: lfn has been deprecated, CRAB will ignore it.\n'
34	>	msg += '\t Please use only user_remote_dir removing lfn from your crab.cfg\n'
35	>	msg += '\t For further information please visit : \n\t%s'%stage_out_faq
36	>	common.logger.message(msg)
37	>
38	>	self.datasetpath = cfg_params.get("CMSSW.datasetpath")
39	>	self.publish_data_name = cfg_params.get('USER.publish_data_name','')
40	>
41	>	self.user_port = cfg_params.get("USER.storage_port",'8443')
42	>	self.user_se_path = cfg_params.get("USER.storage_path",'')
43	>	if self.user_se_path:
44	>	if ( self.user_se_path[-1] != '/' ) : self.user_se_path = self.user_se_path + '/'
45	>
46	>	#check if using "private" Storage
47	>	self.usePhedex = True
48	>	if not self.node :
49	>	msg = 'Please specify the storage_element name in your crab.cfg section [USER].\n'
50	>	msg +='\tFor further information please visit : %s'%stage_out_faq
51	>	raise CrabException(msg)
52	>	if (self.node.find('T1_') + self.node.find('T2_')+self.node.find('T3_')) == -3: self.usePhedex = False
53	>
54	>	if not self.usePhedex and ( self.user_remote_dir == '' or self.user_se_path == '' ):
55	>	msg = 'You are asking to stage out without using CMS Storage Name convention. In this case you \n'
56	>	msg += '\t must specify both user_remote_dir and storage_path in the crab.cfg section [USER].\n '
57	>	msg += '\t For further information please visit : \n\t%s'%stage_out_faq
58	>	raise CrabException(msg)
59	>	self.sched = common.scheduler.name().upper()
60	>	self.protocol = self.srm_version
61	>
62	>	self.forced_path = '/store/user/'
63	>	if self.sched in ['CAF','LSF']:
64	>	self.protocol = 'direct'
65	>	self.SE = {'CAF':'caf.cern.ch', 'LSF':''}
66	>	if self.sched == 'CAF': self.forced_path = '/store/caf/user/'
67	>
68	>	if not self.usePhedex:
69	>	self.forced_path = self.user_remote_dir
70	>	return
71	>
72	>	def getEndpoint(self):
73	>	'''
74	>	Return full SE endpoint and related infos
75	>	'''
76	>	self.lfn = self.getLFN()
77	>
78	>	#extract the PFN for the given node,LFN,protocol
79	>	endpoint = self.getStageoutPFN()
80	>
81	>	#extract SE name an SE_PATH (needed for publication)
82	>	SE, SE_PATH, User = self.splitEndpoint(endpoint)
83	>
84	>	return endpoint, self.lfn , SE, SE_PATH, User
85	>
86	>	def splitEndpoint(self, endpoint):
87	>	'''
88	>	Return relevant infos from endpoint
89	>	'''
90	>	SE = ''
91	>	SE_PATH = ''
92	>	USER = ''
93	>	if self.usePhedex:
94	>	if self.protocol == 'direct':
95	>	query=endpoint
96	>	SE_PATH = endpoint
97	>	SE = self.SE[self.sched]
98	>	else:
99	>	url = 'http://'+endpoint.split('://')[1]
100	>	# python > 2.4
101	>	# SE = urlparse(url).hostname
102	>	scheme, host, path, params, query, fragment = urlparse(url)
103	>	SE = host.split(':')[0]
104	>	SE_PATH = endpoint.split(host)[1]
105	>	USER = (query.split('user')[1]).split('/')[1]
106	>	else:
107	>	#### to test #####
108	>	# url = 'http://'+endpoint.split('://')[1]
109	>	# scheme, host, path, params, query, fragment = urlparse(url)
110	>	# SE = host.split(':')[0]
111	>	# SE_PATH = endpoint.split(host)[1]
112	>	SE = self.node
113	>	SE_PATH = self.user_se_path + self.user_remote_dir
114	>	try:
115	>	USER = (self.lfn.split('user')[1]).split('/')[1]
116	>	except:
117	>	pass
118	>
119	>	return SE, SE_PATH, USER
120	>
121	>
122	>	def getLFN(self):
123	>	"""
124	>	define the LFN composing the needed pieces
125	>	"""
126	>	lfn = ''
127	>	l_User = False
128	>	if not self.usePhedex and (int(self.publish_data) == 0 and int(self.usenamespace) == 0) :
129	>	### add here check if user is trying to force a wrong LFN using a T2  TODO
130	>	## check if storage_name is a T2 (siteDB query)
131	>	## if yes :match self.user_lfn with LFNBaseName...
132	>	##     if NOT : raise (you are using a T2. It's not allowed stage out into self.user_path+self.user_lfn)
133	>	lfn = self.user_remote_dir
134	>	return lfn
135	>	if self.publish_data_name == '' and int(self.publish_data) == 1:
136	>	msg = "Error. The [USER] section does not have 'publish_data_name'\n"
137	>	msg += '\tFor further information please visit : \n\t%s'%self.dataPub_faq
138	>	raise CrabException(msg)
139	>	if self.publish_data_name == '' and int(self.usenamespace) == 1:
140	>	self.publish_data_name = "DefaultDataset"
141	>	if int(self.publish_data) == 1 or int(self.usenamespace) == 1:
142	>	if self.sched in ['CAF']: l_User=True
143	>	primaryDataset = self.computePrimaryDataset()
144	>	lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name)  + '/${PSETHASH}/'
145	>	else:
146	>	if self.sched in ['CAF','LSF']: l_User=True
147	>	lfn = LFNBase(self.forced_path,self.user_remote_dir)
148	>	return lfn
149	>
150	>	def computePrimaryDataset(self):
151	>	"""
152	>	compute the last part for the LFN in case of publication
153	>	"""
154	>	if (self.datasetpath.upper() != 'NONE'):
155	>	primarydataset = self.datasetpath.split("/")[1]
156	>	else:
157	>	primarydataset = self.publish_data_name
158	>	return primarydataset
159
160	<	def lfn2pfn(self,node,lfn,protocol):
161	<	"""
162	<	PhEDEx Data Service lfn2pfn call
163	<
164	<	input:   LFN,node name,protocol
165	<	returns: DOM object with the content of the PhEDEx Data Service call
166	<	"""
167	<	params = {'node' : node , 'lfn': lfn , 'protocol': protocol}
168	<	params = urllib.urlencode(params)
169	<	#print params
170	<	datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
171	<	urlresults = urllib.urlopen(datasvc_lfn2pfn, params)
172	<	try:
173	<	urlresults = parse(urlresults)
174	<	except:
175	<	urlresults = None
176	<	return urlresults
177	<
178	<	def parse_error(self,urlresults):
179	<	"""
180	<	look for errors in the DOM object returned by PhEDEx Data Service call
181	<	"""
182	<	errormsg = None
183	<	errors=urlresults.getElementsByTagName('error')
184	<	for error in errors:
185	<	errormsg=error.childNodes[0].data
186	<	if len(error.childNodes)>1:
187	<	errormsg+=error.childNodes[1].data
188	<	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)
160	>	def lfn2pfn(self):
161	>	"""
162	>	PhEDEx Data Service lfn2pfn call
163	>
164	>	input:   LFN,node name,protocol
165	>	returns: DOM object with the content of the PhEDEx Data Service call
166	>	"""
167	>	params = {'node' : self.node , 'lfn': self.lfn , 'protocol': self.protocol}
168	>	params = urllib.urlencode(params)
169	>	datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
170	>	urlresults = urllib.urlopen(datasvc_lfn2pfn, params)
171	>	try:
172	>	urlresults = parse(urlresults)
173	>	except:
174	>	urlresults = None
175	>
176	>	return urlresults
177	>
178	>	def parse_error(self,urlresults):
179	>	"""
180	>	look for errors in the DOM object returned by PhEDEx Data Service call
181	>	"""
182	>	errormsg = None
183	>	errors=urlresults.getElementsByTagName('error')
184	>	for error in errors:
185	>	errormsg=error.childNodes[0].data
186	>	if len(error.childNodes)>1:
187	>	errormsg+=error.childNodes[1].data
188	>	return errormsg
189
190	+	def parse_lfn2pfn(self,urlresults):
191	+	"""
192	+	Parse the content of the result of lfn2pfn PhEDEx Data Service  call
193	+
194	+	input:    DOM object with the content of the lfn2pfn call
195	+	returns:  PFN
196	+	"""
197	+	result = urlresults.getElementsByTagName('phedex')
198	+
199	+	if not result:
200	+	return []
201	+	result = result[0]
202	+	pfn = None
203	+	mapping = result.getElementsByTagName('mapping')
204	+	for m in mapping:
205	+	pfn=m.getAttribute("pfn")
206	+	if pfn:
207	+	return pfn
208	+
209	+	def getStageoutPFN( self ):
210	+	"""
211	+	input:   LFN,node name,protocol
212	+	returns: PFN
213	+	"""
214	+	if self.usePhedex:
215	+	fullurl="%s/lfn2pfn?node=%s&lfn=%s&protocol=%s"%(self.datasvc_url,self.node,self.lfn,self.protocol)
216	+	domlfn2pfn = self.lfn2pfn()
217	+	if not domlfn2pfn :
218	+	msg="Unable to get info from %s"%fullurl
219	+	raise CrabException(msg)
220	+
221	+	errormsg = self.parse_error(domlfn2pfn)
222	+	if errormsg:
223	+	msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
224	+	raise CrabException(msg)
225	+
226	+	stageoutpfn = self.parse_lfn2pfn(domlfn2pfn)
227	+	if not stageoutpfn:
228	+	msg ='Unable to get stageout path from TFC at Site %s \n'%self.node
229	+	msg+='      Please alert the CompInfraSup group through their savannah %s \n'%self.FacOps_savannah
230	+	msg+='      reporting: \n'
231	+	msg+='       Summary: Unable to get user stageout from TFC at Site %s \n'%self.node
232	+	msg+='       OriginalSubmission: stageout path is not retrieved from %s \n'%fullurl
233	+	raise CrabException(msg)
234	+	else:
235	+	if self.sched in ['CAF','LSF'] :
236	+	stageoutpfn = self.user_se_path+self.lfn
237	+	else:
238	+	stageoutpfn = 'srm://'+self.node+':'+self.user_port+self.user_se_path+self.lfn
239	+
240	+	return stageoutpfn
241	+
242	+
243	+
244	+	if __name__ == '__main__':
245	+	"""
246	+	Sort of unit testing to check Phedex API for whatever site and/or lfn.
247	+	Usage:
248	+	python PhEDExDatasvcInfo.py --node T2_IT_Bari --lfn /store/maremma
249	+
250	+	"""
251	+	import getopt,sys
252	+	from crab_util import *
253	+	import common
254	+	klass_name = 'SchedulerGlite'
255	+	klass = importName(klass_name, klass_name)
256	+	common.scheduler = klass()
257	+
258	+	lfn="/store/user/"
259	+	node='T2_IT_Bari'
260	+	valid = ['node=','lfn=']
261	+	try:
262	+	opts, args = getopt.getopt(sys.argv[1:], "", valid)
263	+	except getopt.GetoptError, ex:
264	+	print str(ex)
265	+	sys.exit(1)
266	+	for o, a in opts:
267	+	if o == "--node":
268	+	node = a
269	+	if o == "--lfn":
270	+	lfn = a
271	+
272	+	mycfg_params = { 'USER.storage_element': node }
273	+	dsvc = PhEDExDatasvcInfo(mycfg_params)
274	+	dsvc.lfn = lfn
275	+	print dsvc.getStageoutPFN()
276	+

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