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.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.pset = cfg_params.get('CMSSW.pset',None)

        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 == '' ):
            ####### FEDE FOR BUG 73010 ############
            msg =  'Error: task ' + common.work_space._top_dir + ' not correctly created. Please remove it. \n'
            msg += '      You are asking to stage out without using CMS Storage Name convention. In this case you \n' 
            msg += '      must specify both user_remote_dir and storage_path in the crab.cfg section [USER].\n'
            msg += '      For further information please visit : \n\t%s'%self.stage_out_faq
            task = common._db.getTask()
            #add = '\n\n'
            #import shutil
            #try:
            #    add += '      Task not correctly created: removing the working_dir ' +  common.work_space._top_dir + ' \n'
            #    shutil.rmtree(common.work_space._top_dir)
            #except OSError:
            #    add += '      Warning: problems removing the working_dir ' + common.work_space._top_dir + ' \n'
            #    add += '      Please remove it by hand'
            #msg += add
            raise CrabException(msg)

        self.forced_path = '/store/user/'
        if self.sched in ['LSF','PBS']:
            self.srm_version = 'direct'
            self.SE = {'LSF':'', 'PBS':''}
            
        if self.sched == 'CAF': 
            #### FEDE TEST FOR XROOTD
            ######### first solution ################
            #eos = cfg_params.get("USER.caf_eos_area", 0)
            #if eos == 0:
            #    self.forced_path = '/store/caf/user/'
            #else:    
            #    self.forced_path = '/store/eos/user'
            #########################################
            ######### second solution ###############
            self.forced_path = cfg_params.get("USER.caf_lfn", '/store/caf/user')
            #########################################
            #print "--->>> FORCING THE FIRST PART OF LFN WITH ", self.forced_path
            self.SE = {'CAF':'caf.cern.ch'}
            self.srm_version = 'stageout'
            #print "--->>> query with 'stageout' "
            #########################################

        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 + '/'

        if int(self.publish_data) == 1 or  int(self.usenamespace) == 1:
            self.lfn = self.lfn  + '/${PSETHASH}/'
            endpoint = endpoint  + '/${PSETHASH}/'
   
        #extract SE name an SE_PATH (needed for publication)
        SE, SE_PATH, User = self.splitEndpoint(endpoint)

        #### FEDE FOR XROOTD #####
        #print "in getEndpoint di PhEDExDatasvcInfo.py: "
        #print "    SE = ", SE
        #print "    SE_PATH = ", SE_PATH
        #print "    User = ", User
        #print "    endpoint = ", 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: 
            ### FEDE PER TEST WITH XROOTD
            if (self.protocol == 'direct' or self.protocol == 'stageout'):
                SE = self.SE[self.sched]
                SE_PATH = endpoint 
                #############################   
                #print "    SE_PATH = ", SE_PATH
            else: 
                url = 'http://'+endpoint.split('://')[1]
                scheme, host, path, params, query, fragment = urlparse(url)
                SE = self.getAuthoritativeSE()
                SE_PATH = endpoint.split(host)[1]
        else:
            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)
        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)
        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) 
            #print "--->>> fullurl = ", fullurl
            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:	1.46
Committed:	Fri Mar 9 01:12:48 2012 UTC (13 years, 1 month ago) by belforte
Content type:	text/x-python
Branch:	MAIN
CVS Tags:	CRAB_2_8_2_pre1, CRAB_2_8_1
Changes since 1.45:	+6 -5 lines
Log Message:	fix for https://savannah.cern.ch/bugs/?91893
#	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	1.39	self.datasvc_url="https://cmsweb.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	1.45	self.pset = cfg_params.get('CMSSW.pset',None)
55
56	spiga	1.8	self.user_port = cfg_params.get("USER.storage_port",'8443')
57	spiga	1.3	self.user_se_path = cfg_params.get("USER.storage_path",'')
58	fanzago	1.7	if self.user_se_path:
59			if ( self.user_se_path[-1] != '/' ) : self.user_se_path = self.user_se_path + '/'
60
61	spiga	1.3	#check if using "private" Storage
62	spiga	1.11	if not self.node :
63			msg = 'Please specify the storage_element name in your crab.cfg section [USER].\n'
64	spiga	1.34	msg +='\tFor further information please visit : %s'%self.stage_out_faq
65	spiga	1.11	raise CrabException(msg)
66	spiga	1.4	if (self.node.find('T1_') + self.node.find('T2_')+self.node.find('T3_')) == -3: self.usePhedex = False
67	spiga	1.15
68			if not self.usePhedex and ( self.user_remote_dir == '' or self.user_se_path == '' ):
69	fanzago	1.40	####### FEDE FOR BUG 73010 ############
70	fanzago	1.43	msg = 'Error: task ' + common.work_space._top_dir + ' not correctly created. Please remove it. \n'
71			msg += ' You are asking to stage out without using CMS Storage Name convention. In this case you \n'
72	fanzago	1.41	msg += ' must specify both user_remote_dir and storage_path in the crab.cfg section [USER].\n'
73			msg += ' For further information please visit : \n\t%s'%self.stage_out_faq
74	fanzago	1.40	task = common._db.getTask()
75	fanzago	1.43	#add = '\n\n'
76			#import shutil
77			#try:
78			# add += ' Task not correctly created: removing the working_dir ' + common.work_space._top_dir + ' \n'
79			# shutil.rmtree(common.work_space._top_dir)
80			#except OSError:
81			# add += ' Warning: problems removing the working_dir ' + common.work_space._top_dir + ' \n'
82			# add += ' Please remove it by hand'
83			#msg += add
84	spiga	1.3	raise CrabException(msg)
85	spiga	1.22
86			self.forced_path = '/store/user/'
87	fanzago	1.42	if self.sched in ['LSF','PBS']:
88	spiga	1.31	self.srm_version = 'direct'
89	fanzago	1.42	self.SE = {'LSF':'', 'PBS':''}
90	spiga	1.22
91	fanzago	1.42	if self.sched == 'CAF':
92			#### FEDE TEST FOR XROOTD
93			######### first solution ################
94			#eos = cfg_params.get("USER.caf_eos_area", 0)
95			#if eos == 0:
96			# self.forced_path = '/store/caf/user/'
97			#else:
98			# self.forced_path = '/store/eos/user'
99			#########################################
100			######### second solution ###############
101			self.forced_path = cfg_params.get("USER.caf_lfn", '/store/caf/user')
102			#########################################
103	fanzago	1.44	#print "--->>> FORCING THE FIRST PART OF LFN WITH ", self.forced_path
104	fanzago	1.42	self.SE = {'CAF':'caf.cern.ch'}
105			self.srm_version = 'stageout'
106	fanzago	1.44	#print "--->>> query with 'stageout' "
107	fanzago	1.42	#########################################
108
109	spiga	1.14	if not self.usePhedex:
110	spiga	1.15	self.forced_path = self.user_remote_dir
111	spiga	1.3	return
112
113			def getEndpoint(self):
114			'''
115			Return full SE endpoint and related infos
116			'''
117			self.lfn = self.getLFN()
118
119			#extract the PFN for the given node,LFN,protocol
120			endpoint = self.getStageoutPFN()
121	fanzago	1.27	if ( endpoint[-1] != '/' ) : endpoint = endpoint + '/'
122	belforte	1.46
123			if int(self.publish_data) == 1 or int(self.usenamespace) == 1:
124			self.lfn = self.lfn + '/${PSETHASH}/'
125			endpoint = endpoint + '/${PSETHASH}/'
126	spiga	1.3
127			#extract SE name an SE_PATH (needed for publication)
128			SE, SE_PATH, User = self.splitEndpoint(endpoint)
129
130	fanzago	1.42	#### FEDE FOR XROOTD #####
131			#print "in getEndpoint di PhEDExDatasvcInfo.py: "
132			#print " SE = ", SE
133			#print " SE_PATH = ", SE_PATH
134			#print " User = ", User
135			#print " endpoint = ", endpoint
136			##############################
137
138	spiga	1.3	return endpoint, self.lfn , SE, SE_PATH, User
139
140			def splitEndpoint(self, endpoint):
141			'''
142			Return relevant infos from endpoint
143			'''
144			SE = ''
145			SE_PATH = ''
146	spiga	1.37	USER = getUserName()
147	spiga	1.3	if self.usePhedex:
148	fanzago	1.42	### FEDE PER TEST WITH XROOTD
149			if (self.protocol == 'direct' or self.protocol == 'stageout'):
150	fanzago	1.18	SE = self.SE[self.sched]
151	fanzago	1.42	SE_PATH = endpoint
152			#############################
153			#print " SE_PATH = ", SE_PATH
154	spiga	1.3	else:
155			url = 'http://'+endpoint.split('://')[1]
156			scheme, host, path, params, query, fragment = urlparse(url)
157	spiga	1.33	SE = self.getAuthoritativeSE()
158	spiga	1.3	SE_PATH = endpoint.split(host)[1]
159			else:
160	spiga	1.20	SE = self.node
161			SE_PATH = self.user_se_path + self.user_remote_dir
162	spiga	1.37	if self.lfn.find('group') != -1:
163			try:
164			USER = (self.lfn.split('group')[1]).split('/')[1]
165			except:
166			pass
167	spiga	1.3	return SE, SE_PATH, USER
168
169			def getLFN(self):
170			"""
171			define the LFN composing the needed pieces
172			"""
173			lfn = ''
174			l_User = False
175			if not self.usePhedex and (int(self.publish_data) == 0 and int(self.usenamespace) == 0) :
176			### add here check if user is trying to force a wrong LFN using a T2 TODO
177			## check if storage_name is a T2 (siteDB query)
178			## if yes :match self.user_lfn with LFNBaseName...
179			## if NOT : raise (you are using a T2. It's not allowed stage out into self.user_path+self.user_lfn)
180	spiga	1.15	lfn = self.user_remote_dir
181	spiga	1.3	return lfn
182			if self.publish_data_name == '' and int(self.publish_data) == 1:
183	spiga	1.17	msg = "Error. The [USER] section does not have 'publish_data_name'\n"
184			msg += '\tFor further information please visit : \n\t%s'%self.dataPub_faq
185	spiga	1.3	raise CrabException(msg)
186			if self.publish_data_name == '' and int(self.usenamespace) == 1:
187			self.publish_data_name = "DefaultDataset"
188	fanzago	1.26	if int(self.publish_data) == 1:
189			if self.sched in ['CAF']: l_User=True
190			primaryDataset = self.computePrimaryDataset()
191			### added the case lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name, publish=True)
192			### for the publication in order to be able to check the lfn length
193	belforte	1.46	lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name, publish=True)
194	fanzago	1.26	elif int(self.usenamespace) == 1:
195	spiga	1.3	if self.sched in ['CAF']: l_User=True
196			primaryDataset = self.computePrimaryDataset()
197	belforte	1.46	lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name)
198	spiga	1.3	else:
199	spiga	1.5	if self.sched in ['CAF','LSF']: l_User=True
200	spiga	1.21	lfn = LFNBase(self.forced_path,self.user_remote_dir)
201	spiga	1.45
202	fanzago	1.35	if ( lfn[-1] != '/' ) : lfn = lfn + '/'
203	spiga	1.45
204	spiga	1.3	return lfn
205
206			def computePrimaryDataset(self):
207			"""
208			compute the last part for the LFN in case of publication
209			"""
210			if (self.datasetpath.upper() != 'NONE'):
211			primarydataset = self.datasetpath.split("/")[1]
212			else:
213			primarydataset = self.publish_data_name
214			return primarydataset
215
216	spiga	1.33	def domPhedex(self,params,datasvc_baseUrl):
217	spiga	1.3	"""
218			PhEDEx Data Service lfn2pfn call
219
220	spiga	1.33	input: params,datasvc_baseUrl
221	spiga	1.3	returns: DOM object with the content of the PhEDEx Data Service call
222			"""
223			params = urllib.urlencode(params)
224			try:
225	spiga	1.33	urlresults = urllib.urlopen(datasvc_baseUrl, params)
226	spiga	1.3	urlresults = parse(urlresults)
227	slacapra	1.24	except IOError:
228	spiga	1.33	msg="Unable to access PhEDEx Data Service at %s"%datasvc_baseUrl
229	slacapra	1.24	raise CrabException(msg)
230	spiga	1.3	except:
231			urlresults = None
232
233			return urlresults
234	afanfani	1.1
235	spiga	1.3	def parse_error(self,urlresults):
236			"""
237			look for errors in the DOM object returned by PhEDEx Data Service call
238			"""
239			errormsg = None
240			errors=urlresults.getElementsByTagName('error')
241			for error in errors:
242			errormsg=error.childNodes[0].data
243			if len(error.childNodes)>1:
244			errormsg+=error.childNodes[1].data
245			return errormsg
246
247			def parse_lfn2pfn(self,urlresults):
248			"""
249			Parse the content of the result of lfn2pfn PhEDEx Data Service call
250
251			input: DOM object with the content of the lfn2pfn call
252			returns: PFN
253			"""
254			result = urlresults.getElementsByTagName('phedex')
255
256			if not result:
257			return []
258			result = result[0]
259			pfn = None
260			mapping = result.getElementsByTagName('mapping')
261			for m in mapping:
262			pfn=m.getAttribute("pfn")
263			if pfn:
264			return pfn
265
266			def getStageoutPFN( self ):
267			"""
268			input: LFN,node name,protocol
269			returns: PFN
270			"""
271			if self.usePhedex:
272	spiga	1.33	params = {'node' : self.node , 'lfn': self.lfn , 'protocol': self.protocol}
273			datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
274	spiga	1.3	fullurl="%s/lfn2pfn?node=%s&lfn=%s&protocol=%s"%(self.datasvc_url,self.node,self.lfn,self.protocol)
275	fanzago	1.44	#print "--->>> fullurl = ", fullurl
276	spiga	1.33	domlfn2pfn = self.domPhedex(params,datasvc_lfn2pfn)
277	spiga	1.3	if not domlfn2pfn :
278			msg="Unable to get info from %s"%fullurl
279			raise CrabException(msg)
280
281			errormsg = self.parse_error(domlfn2pfn)
282			if errormsg:
283			msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
284			raise CrabException(msg)
285
286			stageoutpfn = self.parse_lfn2pfn(domlfn2pfn)
287			if not stageoutpfn:
288	afanfani	1.6	msg ='Unable to get stageout path from TFC at Site %s \n'%self.node
289			msg+=' Please alert the CompInfraSup group through their savannah %s \n'%self.FacOps_savannah
290			msg+=' reporting: \n'
291			msg+=' Summary: Unable to get user stageout from TFC at Site %s \n'%self.node
292			msg+=' OriginalSubmission: stageout path is not retrieved from %s \n'%fullurl
293	spiga	1.3	raise CrabException(msg)
294			else:
295	mcinquil	1.32	if self.sched in ['CAF','LSF','PBS'] :
296	spiga	1.12	stageoutpfn = self.user_se_path+self.lfn
297	spiga	1.11	else:
298			stageoutpfn = 'srm://'+self.node+':'+self.user_port+self.user_se_path+self.lfn
299	spiga	1.3
300	fanzago	1.35	if ( stageoutpfn[-1] != '/' ) : stageoutpfn = stageoutpfn + '/'
301	spiga	1.3	return stageoutpfn
302	afanfani	1.6
303	spiga	1.33	def getAuthoritativeSE(self):
304			"""
305			input: node name
306			returns: AuthoritativeSE
307			"""
308			params = {'node' : self.node }
309			datasvc_nodes="%s/nodes"%self.datasvc_url
310			fullurl="%s/nodes/?node=%s"%(self.datasvc_url,self.node)
311			domnodes = self.domPhedex(params,datasvc_nodes)
312
313			if not domnodes :
314			msg="Unable to get info from %s"%fullurl
315			raise CrabException(msg)
316
317			errormsg = self.parse_error(domnodes)
318			if errormsg:
319			msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
320			raise CrabException(msg)
321			result = domnodes.getElementsByTagName('phedex')
322			if not result:
323			return []
324			result = result[0]
325			se = None
326			node = result.getElementsByTagName('node')
327			for m in node:
328			se=m.getAttribute("se")
329			if se:
330			return se
331	afanfani	1.6
332
333			if __name__ == '__main__':
334			"""
335			Sort of unit testing to check Phedex API for whatever site and/or lfn.
336			Usage:
337			python PhEDExDatasvcInfo.py --node T2_IT_Bari --lfn /store/maremma
338
339			"""
340			import getopt,sys
341			from crab_util import *
342			import common
343			klass_name = 'SchedulerGlite'
344			klass = importName(klass_name, klass_name)
345			common.scheduler = klass()
346
347			lfn="/store/user/"
348			node='T2_IT_Bari'
349			valid = ['node=','lfn=']
350			try:
351			opts, args = getopt.getopt(sys.argv[1:], "", valid)
352			except getopt.GetoptError, ex:
353			print str(ex)
354			sys.exit(1)
355			for o, a in opts:
356			if o == "--node":
357			node = a
358			if o == "--lfn":
359			lfn = a
360
361			mycfg_params = { 'USER.storage_element': node }
362			dsvc = PhEDExDatasvcInfo(mycfg_params)
363			dsvc.lfn = lfn
364			print dsvc.getStageoutPFN()
365