CRAB/python/PhEDExDatasvcInfo.py

from Actor import *
import urllib
from xml.dom.minidom import parse
from crab_exceptions import *
from WorkSpace import *
from urlparse import urlparse 
from LFNBaseName import *
from crab_util import getUserName

class PhEDExDatasvcInfo:
    def __init__( self , cfg_params=None, config=None ):
 
        ## PhEDEx Data Service URL
        self.datasvc_url="https://cmsweb-testbed.cern.ch/phedex/datasvc/xml/prod"

        self.FacOps_savannah = 'https://savannah.cern.ch/support/?func=additem&group=cmscompinfrasup'
        self.stage_out_faq='https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideCrabHowTo#Stageout_and_publication' 
        self.dataPub_faq = 'https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideCrabForPublication'

        self.usePhedex = True 
        self.sched = common.scheduler.name().upper() 

        if config!=None:
            self.checkConfig(config)  
        else:
            self.checkCfgConfig(cfg_params)  

        self.protocol = self.srm_version
 

    def checkConfig(self,config):
        """
        """
        self.srm_version = config.get("srm_version",'srmv2')
        self.node = config.get('storage_element',None)
        self.lfn='/store/'

    def checkCfgConfig(self,cfg_params):
        """
        """
        self.datasvc_url = cfg_params.get("USER.datasvc_url",self.datasvc_url)
        self.srm_version = cfg_params.get("USER.srm_version",'srmv2')
        self.node = cfg_params.get('USER.storage_element',None)

        self.publish_data = cfg_params.get("USER.publish_data",0)
        self.usenamespace = cfg_params.get("USER.usenamespace",0)
        self.user_remote_dir = cfg_params.get("USER.user_remote_dir",'')
        if self.user_remote_dir:
            if ( self.user_remote_dir[-1] != '/' ) : self.user_remote_dir = self.user_remote_dir + '/'
          
        self.datasetpath = cfg_params.get("CMSSW.datasetpath")
        self.publish_data_name = cfg_params.get('USER.publish_data_name','')

        self.user_port = cfg_params.get("USER.storage_port",'8443')
        self.user_se_path = cfg_params.get("USER.storage_path",'')
        if self.user_se_path:
            if ( self.user_se_path[-1] != '/' ) : self.user_se_path = self.user_se_path + '/'
                                                    
        #check if using "private" Storage
        if not self.node :
            msg = 'Please specify the storage_element name in your crab.cfg section [USER].\n'
            msg +='\tFor further information please visit : %s'%self.stage_out_faq 
            raise CrabException(msg)
        if (self.node.find('T1_') + self.node.find('T2_')+self.node.find('T3_')) == -3: self.usePhedex = False 

        if not self.usePhedex and ( self.user_remote_dir == '' or self.user_se_path == '' ):
            msg = 'You are asking to stage out without using CMS Storage Name convention. In this case you \n' 
            msg += '\t must specify both user_remote_dir and storage_path in the crab.cfg section [USER].\n '
            msg += '\t For further information please visit : \n\t%s'%self.stage_out_faq
            raise CrabException(msg)

        self.forced_path = '/store/user/'
        if self.sched in ['CAF','LSF','PBS']:
            self.srm_version = 'direct'
            self.SE = {'CAF':'caf.cern.ch', 'LSF':'', 'PBS':''}
            if self.sched == 'CAF': self.forced_path = '/store/caf/user/'
            
        if not self.usePhedex: 
            self.forced_path = self.user_remote_dir
        return
 
    def getEndpoint(self):   
        '''
        Return full SE endpoint and related infos
        '''
        self.lfn = self.getLFN()
 
        #extract the PFN for the given node,LFN,protocol
        endpoint = self.getStageoutPFN()
        if ( endpoint[-1] != '/' ) : endpoint = endpoint + '/'
   
        #extract SE name an SE_PATH (needed for publication)
        SE, SE_PATH, User = self.splitEndpoint(endpoint)

        return endpoint, self.lfn , SE, SE_PATH, User         
       
    def splitEndpoint(self, endpoint):
        '''
        Return relevant infos from endpoint  
        '''
        SE = ''
        SE_PATH = ''
        USER = getUserName()
        if self.usePhedex: 
            if self.protocol == 'direct':
                query=endpoint
                SE_PATH = endpoint
                SE = self.SE[self.sched]
            else: 
                url = 'http://'+endpoint.split('://')[1]
                scheme, host, path, params, query, fragment = urlparse(url)
                SE = self.getAuthoritativeSE()
                SE_PATH = endpoint.split(host)[1]
        else:
           #### to test #####
           # url = 'http://'+endpoint.split('://')[1]
           # scheme, host, path, params, query, fragment = urlparse(url)
           # SE = host.split(':')[0]
           # SE_PATH = endpoint.split(host)[1]
            SE = self.node
            SE_PATH = self.user_se_path + self.user_remote_dir 
            if self.lfn.find('group') != -1:
                try:
                    USER = (self.lfn.split('group')[1]).split('/')[1]
                except:
                    pass
        return SE, SE_PATH, USER 

    def getLFN(self):
        """
        define the LFN composing the needed pieces
        """
        lfn = ''
        l_User = False
        if not self.usePhedex and (int(self.publish_data) == 0 and int(self.usenamespace) == 0) :
            ### add here check if user is trying to force a wrong LFN using a T2  TODO
            ## check if storage_name is a T2 (siteDB query)
            ## if yes :match self.user_lfn with LFNBaseName...
            ##     if NOT : raise (you are using a T2. It's not allowed stage out into self.user_path+self.user_lfn)   
            lfn = self.user_remote_dir
            return lfn
        if self.publish_data_name == '' and int(self.publish_data) == 1:
            msg = "Error. The [USER] section does not have 'publish_data_name'\n"
            msg += '\tFor further information please visit : \n\t%s'%self.dataPub_faq
            raise CrabException(msg)
        if self.publish_data_name == '' and int(self.usenamespace) == 1:
           self.publish_data_name = "DefaultDataset"
        if int(self.publish_data) == 1:
            if self.sched in ['CAF']: l_User=True 
            primaryDataset = self.computePrimaryDataset()
            ### added the case lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name, publish=True)
            ### for the publication in order to be able to check the lfn length  
            lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name, publish=True)  + '/${PSETHASH}/'    
        elif int(self.usenamespace) == 1:
            if self.sched in ['CAF']: l_User=True 
            primaryDataset = self.computePrimaryDataset()
            lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name)  + '/${PSETHASH}/'    
        else:
            if self.sched in ['CAF','LSF']: l_User=True 
            lfn = LFNBase(self.forced_path,self.user_remote_dir)
        if ( lfn[-1] != '/' ) : lfn = lfn + '/'
        return lfn
 
    def computePrimaryDataset(self):
        """
        compute the last part for the LFN in case of publication     
        """
        if (self.datasetpath.upper() != 'NONE'):
            primarydataset = self.datasetpath.split("/")[1]
        else:
            primarydataset = self.publish_data_name
        return primarydataset
    
    def domPhedex(self,params,datasvc_baseUrl):
        """
        PhEDEx Data Service lfn2pfn call
 
        input:   params,datasvc_baseUrl
        returns: DOM object with the content of the PhEDEx Data Service call
        """  
        params = urllib.urlencode(params)
        try:
            urlresults = urllib.urlopen(datasvc_baseUrl, params)
            urlresults = parse(urlresults)
        except IOError:
            msg="Unable to access PhEDEx Data Service at %s"%datasvc_baseUrl
            raise CrabException(msg)
        except:
            urlresults = None

        return urlresults
 
    def parse_error(self,urlresults):
        """
        look for errors in the DOM object returned by PhEDEx Data Service call
        """
        errormsg = None 
        errors=urlresults.getElementsByTagName('error')
        for error in errors:
            errormsg=error.childNodes[0].data
            if len(error.childNodes)>1:
               errormsg+=error.childNodes[1].data
        return errormsg
 
    def parse_lfn2pfn(self,urlresults):
        """
        Parse the content of the result of lfn2pfn PhEDEx Data Service  call
 
        input:    DOM object with the content of the lfn2pfn call
        returns:  PFN  
        """
        result = urlresults.getElementsByTagName('phedex')
               
        if not result:
              return []
        result = result[0]
        pfn = None
        mapping = result.getElementsByTagName('mapping')
        for m in mapping:
            pfn=m.getAttribute("pfn")
            if pfn:
              return pfn
 
    def getStageoutPFN( self ):
        """
        input:   LFN,node name,protocol
        returns: PFN 
        """
        if self.usePhedex:
            params = {'node' : self.node , 'lfn': self.lfn , 'protocol': self.protocol}
            datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
            fullurl="%s/lfn2pfn?node=%s&lfn=%s&protocol=%s"%(self.datasvc_url,self.node,self.lfn,self.protocol) 
            domlfn2pfn = self.domPhedex(params,datasvc_lfn2pfn)
            if not domlfn2pfn :
                msg="Unable to get info from %s"%fullurl
                raise CrabException(msg)
  
            errormsg = self.parse_error(domlfn2pfn)
            if errormsg: 
                msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
                raise CrabException(msg)
  
            stageoutpfn = self.parse_lfn2pfn(domlfn2pfn)
            if not stageoutpfn:
                msg ='Unable to get stageout path from TFC at Site %s \n'%self.node
                msg+='      Please alert the CompInfraSup group through their savannah %s \n'%self.FacOps_savannah
                msg+='      reporting: \n'
                msg+='       Summary: Unable to get user stageout from TFC at Site %s \n'%self.node
                msg+='       OriginalSubmission: stageout path is not retrieved from %s \n'%fullurl
                raise CrabException(msg)
        else:
            if self.sched in ['CAF','LSF','PBS'] :
                stageoutpfn = self.user_se_path+self.lfn 
            else: 
                stageoutpfn = 'srm://'+self.node+':'+self.user_port+self.user_se_path+self.lfn 

        if ( stageoutpfn[-1] != '/' ) : stageoutpfn = stageoutpfn + '/'
        return stageoutpfn 

    def getAuthoritativeSE(self):
        """
        input:   node name
        returns: AuthoritativeSE 
        """
        params = {'node' : self.node }
        datasvc_nodes="%s/nodes"%self.datasvc_url
        fullurl="%s/nodes/?node=%s"%(self.datasvc_url,self.node) 
        domnodes = self.domPhedex(params,datasvc_nodes)

        if not domnodes :
            msg="Unable to get info from %s"%fullurl
            raise CrabException(msg)

        errormsg = self.parse_error(domnodes)
        if errormsg: 
            msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
            raise CrabException(msg)
        result = domnodes.getElementsByTagName('phedex')
        if not result:
              return []
        result = result[0]
        se = None
        node = result.getElementsByTagName('node')
        for m in node:
            se=m.getAttribute("se")
            if se:
                return se


if __name__ == '__main__':
  """
  Sort of unit testing to check Phedex API for whatever site and/or lfn.
  Usage:
     python PhEDExDatasvcInfo.py --node T2_IT_Bari --lfn /store/maremma

  """
  import getopt,sys
  from crab_util import *
  import common
  klass_name = 'SchedulerGlite'
  klass = importName(klass_name, klass_name)
  common.scheduler = klass()

  lfn="/store/user/"
  node='T2_IT_Bari'
  valid = ['node=','lfn=']
  try:
       opts, args = getopt.getopt(sys.argv[1:], "", valid)
  except getopt.GetoptError, ex:
       print str(ex)
       sys.exit(1)
  for o, a in opts:
        if o == "--node":
            node = a
        if o == "--lfn":
            lfn = a
  
  mycfg_params = { 'USER.storage_element': node }
  dsvc = PhEDExDatasvcInfo(mycfg_params)
  dsvc.lfn = lfn
  print dsvc.getStageoutPFN()

Revision:	1.38
Committed:	Mon Jan 31 14:16:04 2011 UTC (14 years, 2 months ago) by belforte
Content type:	text/x-python
Branch:	MAIN
Changes since 1.37:	+1 -1 lines
Log Message:	remove code obsolete since https://savannah.cern.ch/bugs/?55624
#	User	Rev	Content
1	spiga	1.3	from Actor import *
2	afanfani	1.1	import urllib
3			from xml.dom.minidom import parse
4			from crab_exceptions import *
5	spiga	1.3	from WorkSpace import *
6			from urlparse import urlparse
7			from LFNBaseName import *
8	fanzago	1.36	from crab_util import getUserName
9	afanfani	1.1
10			class PhEDExDatasvcInfo:
11	fanzago	1.28	def __init__( self , cfg_params=None, config=None ):
12	spiga	1.3
13			## PhEDEx Data Service URL
14	belforte	1.38	self.datasvc_url="https://cmsweb-testbed.cern.ch/phedex/datasvc/xml/prod"
15	spiga	1.3
16	afanfani	1.6	self.FacOps_savannah = 'https://savannah.cern.ch/support/?func=additem&group=cmscompinfrasup'
17	spiga	1.34	self.stage_out_faq='https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideCrabHowTo#Stageout_and_publication'
18	spiga	1.17	self.dataPub_faq = 'https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideCrabForPublication'
19	spiga	1.3
20	fanzago	1.28	self.usePhedex = True
21	spiga	1.29	self.sched = common.scheduler.name().upper()
22	fanzago	1.28
23			if config!=None:
24			self.checkConfig(config)
25			else:
26			self.checkCfgConfig(cfg_params)
27
28			self.protocol = self.srm_version
29
30
31			def checkConfig(self,config):
32			"""
33			"""
34			self.srm_version = config.get("srm_version",'srmv2')
35			self.node = config.get('storage_element',None)
36			self.lfn='/store/'
37
38			def checkCfgConfig(self,cfg_params):
39			"""
40			"""
41			self.datasvc_url = cfg_params.get("USER.datasvc_url",self.datasvc_url)
42	spiga	1.3	self.srm_version = cfg_params.get("USER.srm_version",'srmv2')
43			self.node = cfg_params.get('USER.storage_element',None)
44	spiga	1.17
45	spiga	1.3	self.publish_data = cfg_params.get("USER.publish_data",0)
46			self.usenamespace = cfg_params.get("USER.usenamespace",0)
47	fanzago	1.10	self.user_remote_dir = cfg_params.get("USER.user_remote_dir",'')
48	fanzago	1.7	if self.user_remote_dir:
49			if ( self.user_remote_dir[-1] != '/' ) : self.user_remote_dir = self.user_remote_dir + '/'
50	spiga	1.17
51	spiga	1.3	self.datasetpath = cfg_params.get("CMSSW.datasetpath")
52			self.publish_data_name = cfg_params.get('USER.publish_data_name','')
53
54	spiga	1.8	self.user_port = cfg_params.get("USER.storage_port",'8443')
55	spiga	1.3	self.user_se_path = cfg_params.get("USER.storage_path",'')
56	fanzago	1.7	if self.user_se_path:
57			if ( self.user_se_path[-1] != '/' ) : self.user_se_path = self.user_se_path + '/'
58
59	spiga	1.3	#check if using "private" Storage
60	spiga	1.11	if not self.node :
61			msg = 'Please specify the storage_element name in your crab.cfg section [USER].\n'
62	spiga	1.34	msg +='\tFor further information please visit : %s'%self.stage_out_faq
63	spiga	1.11	raise CrabException(msg)
64	spiga	1.4	if (self.node.find('T1_') + self.node.find('T2_')+self.node.find('T3_')) == -3: self.usePhedex = False
65	spiga	1.15
66			if not self.usePhedex and ( self.user_remote_dir == '' or self.user_se_path == '' ):
67	spiga	1.3	msg = 'You are asking to stage out without using CMS Storage Name convention. In this case you \n'
68	spiga	1.15	msg += '\t must specify both user_remote_dir and storage_path in the crab.cfg section [USER].\n '
69	spiga	1.34	msg += '\t For further information please visit : \n\t%s'%self.stage_out_faq
70	spiga	1.3	raise CrabException(msg)
71	spiga	1.22
72			self.forced_path = '/store/user/'
73	mcinquil	1.32	if self.sched in ['CAF','LSF','PBS']:
74	spiga	1.31	self.srm_version = 'direct'
75	mcinquil	1.32	self.SE = {'CAF':'caf.cern.ch', 'LSF':'', 'PBS':''}
76	spiga	1.22	if self.sched == 'CAF': self.forced_path = '/store/caf/user/'
77
78	spiga	1.14	if not self.usePhedex:
79	spiga	1.15	self.forced_path = self.user_remote_dir
80	spiga	1.3	return
81
82			def getEndpoint(self):
83			'''
84			Return full SE endpoint and related infos
85			'''
86			self.lfn = self.getLFN()
87
88			#extract the PFN for the given node,LFN,protocol
89			endpoint = self.getStageoutPFN()
90	fanzago	1.27	if ( endpoint[-1] != '/' ) : endpoint = endpoint + '/'
91	spiga	1.3
92			#extract SE name an SE_PATH (needed for publication)
93			SE, SE_PATH, User = self.splitEndpoint(endpoint)
94
95			return endpoint, self.lfn , SE, SE_PATH, User
96
97			def splitEndpoint(self, endpoint):
98			'''
99			Return relevant infos from endpoint
100			'''
101			SE = ''
102			SE_PATH = ''
103	spiga	1.37	USER = getUserName()
104	spiga	1.3	if self.usePhedex:
105			if self.protocol == 'direct':
106			query=endpoint
107			SE_PATH = endpoint
108	fanzago	1.18	SE = self.SE[self.sched]
109	spiga	1.3	else:
110			url = 'http://'+endpoint.split('://')[1]
111			scheme, host, path, params, query, fragment = urlparse(url)
112	spiga	1.33	SE = self.getAuthoritativeSE()
113	spiga	1.3	SE_PATH = endpoint.split(host)[1]
114			else:
115	fanzago	1.36	#### to test #####
116	spiga	1.21	# url = 'http://'+endpoint.split('://')[1]
117			# scheme, host, path, params, query, fragment = urlparse(url)
118			# SE = host.split(':')[0]
119			# SE_PATH = endpoint.split(host)[1]
120	spiga	1.20	SE = self.node
121			SE_PATH = self.user_se_path + self.user_remote_dir
122	spiga	1.37	if self.lfn.find('group') != -1:
123			try:
124			USER = (self.lfn.split('group')[1]).split('/')[1]
125			except:
126			pass
127	spiga	1.3	return SE, SE_PATH, USER
128
129			def getLFN(self):
130			"""
131			define the LFN composing the needed pieces
132			"""
133			lfn = ''
134			l_User = False
135			if not self.usePhedex and (int(self.publish_data) == 0 and int(self.usenamespace) == 0) :
136			### add here check if user is trying to force a wrong LFN using a T2 TODO
137			## check if storage_name is a T2 (siteDB query)
138			## if yes :match self.user_lfn with LFNBaseName...
139			## if NOT : raise (you are using a T2. It's not allowed stage out into self.user_path+self.user_lfn)
140	spiga	1.15	lfn = self.user_remote_dir
141	spiga	1.3	return lfn
142			if self.publish_data_name == '' and int(self.publish_data) == 1:
143	spiga	1.17	msg = "Error. The [USER] section does not have 'publish_data_name'\n"
144			msg += '\tFor further information please visit : \n\t%s'%self.dataPub_faq
145	spiga	1.3	raise CrabException(msg)
146			if self.publish_data_name == '' and int(self.usenamespace) == 1:
147			self.publish_data_name = "DefaultDataset"
148	fanzago	1.26	if int(self.publish_data) == 1:
149			if self.sched in ['CAF']: l_User=True
150			primaryDataset = self.computePrimaryDataset()
151			### added the case lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name, publish=True)
152			### for the publication in order to be able to check the lfn length
153			lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name, publish=True) + '/${PSETHASH}/'
154			elif int(self.usenamespace) == 1:
155	spiga	1.3	if self.sched in ['CAF']: l_User=True
156			primaryDataset = self.computePrimaryDataset()
157	spiga	1.21	lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name) + '/${PSETHASH}/'
158	spiga	1.3	else:
159	spiga	1.5	if self.sched in ['CAF','LSF']: l_User=True
160	spiga	1.21	lfn = LFNBase(self.forced_path,self.user_remote_dir)
161	fanzago	1.35	if ( lfn[-1] != '/' ) : lfn = lfn + '/'
162	spiga	1.3	return lfn
163
164			def computePrimaryDataset(self):
165			"""
166			compute the last part for the LFN in case of publication
167			"""
168			if (self.datasetpath.upper() != 'NONE'):
169			primarydataset = self.datasetpath.split("/")[1]
170			else:
171			primarydataset = self.publish_data_name
172			return primarydataset
173
174	spiga	1.33	def domPhedex(self,params,datasvc_baseUrl):
175	spiga	1.3	"""
176			PhEDEx Data Service lfn2pfn call
177
178	spiga	1.33	input: params,datasvc_baseUrl
179	spiga	1.3	returns: DOM object with the content of the PhEDEx Data Service call
180			"""
181			params = urllib.urlencode(params)
182			try:
183	spiga	1.33	urlresults = urllib.urlopen(datasvc_baseUrl, params)
184	spiga	1.3	urlresults = parse(urlresults)
185	slacapra	1.24	except IOError:
186	spiga	1.33	msg="Unable to access PhEDEx Data Service at %s"%datasvc_baseUrl
187	slacapra	1.24	raise CrabException(msg)
188	spiga	1.3	except:
189			urlresults = None
190
191			return urlresults
192	afanfani	1.1
193	spiga	1.3	def parse_error(self,urlresults):
194			"""
195			look for errors in the DOM object returned by PhEDEx Data Service call
196			"""
197			errormsg = None
198			errors=urlresults.getElementsByTagName('error')
199			for error in errors:
200			errormsg=error.childNodes[0].data
201			if len(error.childNodes)>1:
202			errormsg+=error.childNodes[1].data
203			return errormsg
204
205			def parse_lfn2pfn(self,urlresults):
206			"""
207			Parse the content of the result of lfn2pfn PhEDEx Data Service call
208
209			input: DOM object with the content of the lfn2pfn call
210			returns: PFN
211			"""
212			result = urlresults.getElementsByTagName('phedex')
213
214			if not result:
215			return []
216			result = result[0]
217			pfn = None
218			mapping = result.getElementsByTagName('mapping')
219			for m in mapping:
220			pfn=m.getAttribute("pfn")
221			if pfn:
222			return pfn
223
224			def getStageoutPFN( self ):
225			"""
226			input: LFN,node name,protocol
227			returns: PFN
228			"""
229			if self.usePhedex:
230	spiga	1.33	params = {'node' : self.node , 'lfn': self.lfn , 'protocol': self.protocol}
231			datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
232	spiga	1.3	fullurl="%s/lfn2pfn?node=%s&lfn=%s&protocol=%s"%(self.datasvc_url,self.node,self.lfn,self.protocol)
233	spiga	1.33	domlfn2pfn = self.domPhedex(params,datasvc_lfn2pfn)
234	spiga	1.3	if not domlfn2pfn :
235			msg="Unable to get info from %s"%fullurl
236			raise CrabException(msg)
237
238			errormsg = self.parse_error(domlfn2pfn)
239			if errormsg:
240			msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
241			raise CrabException(msg)
242
243			stageoutpfn = self.parse_lfn2pfn(domlfn2pfn)
244			if not stageoutpfn:
245	afanfani	1.6	msg ='Unable to get stageout path from TFC at Site %s \n'%self.node
246			msg+=' Please alert the CompInfraSup group through their savannah %s \n'%self.FacOps_savannah
247			msg+=' reporting: \n'
248			msg+=' Summary: Unable to get user stageout from TFC at Site %s \n'%self.node
249			msg+=' OriginalSubmission: stageout path is not retrieved from %s \n'%fullurl
250	spiga	1.3	raise CrabException(msg)
251			else:
252	mcinquil	1.32	if self.sched in ['CAF','LSF','PBS'] :
253	spiga	1.12	stageoutpfn = self.user_se_path+self.lfn
254	spiga	1.11	else:
255			stageoutpfn = 'srm://'+self.node+':'+self.user_port+self.user_se_path+self.lfn
256	spiga	1.3
257	fanzago	1.35	if ( stageoutpfn[-1] != '/' ) : stageoutpfn = stageoutpfn + '/'
258	spiga	1.3	return stageoutpfn
259	afanfani	1.6
260	spiga	1.33	def getAuthoritativeSE(self):
261			"""
262			input: node name
263			returns: AuthoritativeSE
264			"""
265			params = {'node' : self.node }
266			datasvc_nodes="%s/nodes"%self.datasvc_url
267			fullurl="%s/nodes/?node=%s"%(self.datasvc_url,self.node)
268			domnodes = self.domPhedex(params,datasvc_nodes)
269
270			if not domnodes :
271			msg="Unable to get info from %s"%fullurl
272			raise CrabException(msg)
273
274			errormsg = self.parse_error(domnodes)
275			if errormsg:
276			msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
277			raise CrabException(msg)
278			result = domnodes.getElementsByTagName('phedex')
279			if not result:
280			return []
281			result = result[0]
282			se = None
283			node = result.getElementsByTagName('node')
284			for m in node:
285			se=m.getAttribute("se")
286			if se:
287			return se
288	afanfani	1.6
289
290			if __name__ == '__main__':
291			"""
292			Sort of unit testing to check Phedex API for whatever site and/or lfn.
293			Usage:
294			python PhEDExDatasvcInfo.py --node T2_IT_Bari --lfn /store/maremma
295
296			"""
297			import getopt,sys
298			from crab_util import *
299			import common
300			klass_name = 'SchedulerGlite'
301			klass = importName(klass_name, klass_name)
302			common.scheduler = klass()
303
304			lfn="/store/user/"
305			node='T2_IT_Bari'
306			valid = ['node=','lfn=']
307			try:
308			opts, args = getopt.getopt(sys.argv[1:], "", valid)
309			except getopt.GetoptError, ex:
310			print str(ex)
311			sys.exit(1)
312			for o, a in opts:
313			if o == "--node":
314			node = a
315			if o == "--lfn":
316			lfn = a
317
318			mycfg_params = { 'USER.storage_element': node }
319			dsvc = PhEDExDatasvcInfo(mycfg_params)
320			dsvc.lfn = lfn
321			print dsvc.getStageoutPFN()
322