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 *

class PhEDExDatasvcInfo:
    def __init__( self , cfg_params ):
 
        ## PhEDEx Data Service URL
        url="https://cmsweb.cern.ch/phedex/datasvc/xml/prod"
        self.datasvc_url = cfg_params.get("USER.datasvc_url",url)

        self.FacOps_savannah = 'https://savannah.cern.ch/support/?func=additem&group=cmscompinfrasup'
        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.srm_version = cfg_params.get("USER.srm_version",'srmv2')
        self.node = cfg_params.get('USER.storage_element',None)
        

        self.user_lfn = cfg_params.get("USER.lfn",'')
        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 + '/'
        if self.user_lfn:    
            msg  = 'Warning: lfn has been deprecated, CRAB will ignore it.\n'
            msg += '\t Please use only user_remote_dir removing lfn from your crab.cfg\n'
            msg += '\t For further information please visit : \n\t%s'%stage_out_faq 
            common.logger.info(msg)
          
        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
        self.usePhedex = True 
        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'%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'%stage_out_faq
            raise CrabException(msg)
        self.sched = common.scheduler.name().upper() 
        self.protocol = self.srm_version

        self.forced_path = '/store/user/'
        if self.sched in ['CAF','LSF']:
            self.protocol = 'direct'
            self.SE = {'CAF':'caf.cern.ch', 'LSF':''}
            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()
        ### FEDE added a check for the final / 
        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 = ''
        if self.usePhedex: 
            if self.protocol == 'direct':
                query=endpoint
                SE_PATH = endpoint
                SE = self.SE[self.sched]
            else: 
                url = 'http://'+endpoint.split('://')[1]
                # python > 2.4
                # SE = urlparse(url).hostname 
                scheme, host, path, params, query, fragment = urlparse(url)
                SE = host.split(':')[0]
                SE_PATH = endpoint.split(host)[1]
            USER = (query.split('user')[1]).split('/')[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 
            try:
                USER = (self.lfn.split('user')[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)
        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 lfn2pfn(self):
        """
        PhEDEx Data Service lfn2pfn call
 
        input:   LFN,node name,protocol
        returns: DOM object with the content of the PhEDEx Data Service call
        """  
        params = {'node' : self.node , 'lfn': self.lfn , 'protocol': self.protocol}
        params = urllib.urlencode(params)
        datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
        try:
            urlresults = urllib.urlopen(datasvc_lfn2pfn, params)
            urlresults = parse(urlresults)
        except IOError:
            msg="Unable to access PhEDEx Data Service at %s"%datasvc_lfn2pfn
            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:
            fullurl="%s/lfn2pfn?node=%s&lfn=%s&protocol=%s"%(self.datasvc_url,self.node,self.lfn,self.protocol) 
            domlfn2pfn = self.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'] :
                stageoutpfn = self.user_se_path+self.lfn 
            else: 
                stageoutpfn = 'srm://'+self.node+':'+self.user_port+self.user_se_path+self.lfn 

        return stageoutpfn 


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:	1.27
Committed:	Wed Sep 16 15:49:01 2009 UTC (15 years, 7 months ago) by fanzago
Content type:	text/x-python
Branch:	MAIN
Changes since 1.26:	+3 -0 lines
Log Message:	changes related CopyData, savannah task 8700
#	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	afanfani	1.1
9			class PhEDExDatasvcInfo:
10	spiga	1.3	def __init__( self , cfg_params ):
11
12			## PhEDEx Data Service URL
13			url="https://cmsweb.cern.ch/phedex/datasvc/xml/prod"
14			self.datasvc_url = cfg_params.get("USER.datasvc_url",url)
15
16	afanfani	1.6	self.FacOps_savannah = 'https://savannah.cern.ch/support/?func=additem&group=cmscompinfrasup'
17	spiga	1.23	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			self.srm_version = cfg_params.get("USER.srm_version",'srmv2')
21			self.node = cfg_params.get('USER.storage_element',None)
22
23	spiga	1.17
24
25			self.user_lfn = cfg_params.get("USER.lfn",'')
26	spiga	1.3	self.publish_data = cfg_params.get("USER.publish_data",0)
27			self.usenamespace = cfg_params.get("USER.usenamespace",0)
28	fanzago	1.10	self.user_remote_dir = cfg_params.get("USER.user_remote_dir",'')
29	fanzago	1.7	if self.user_remote_dir:
30			if ( self.user_remote_dir[-1] != '/' ) : self.user_remote_dir = self.user_remote_dir + '/'
31	spiga	1.17	if self.user_lfn:
32			msg = 'Warning: lfn has been deprecated, CRAB will ignore it.\n'
33			msg += '\t Please use only user_remote_dir removing lfn from your crab.cfg\n'
34			msg += '\t For further information please visit : \n\t%s'%stage_out_faq
35	spiga	1.25	common.logger.info(msg)
36	spiga	1.17
37	spiga	1.3	self.datasetpath = cfg_params.get("CMSSW.datasetpath")
38			self.publish_data_name = cfg_params.get('USER.publish_data_name','')
39
40	spiga	1.8	self.user_port = cfg_params.get("USER.storage_port",'8443')
41	spiga	1.3	self.user_se_path = cfg_params.get("USER.storage_path",'')
42	fanzago	1.7	if self.user_se_path:
43			if ( self.user_se_path[-1] != '/' ) : self.user_se_path = self.user_se_path + '/'
44
45	spiga	1.3	#check if using "private" Storage
46			self.usePhedex = True
47	spiga	1.11	if not self.node :
48			msg = 'Please specify the storage_element name in your crab.cfg section [USER].\n'
49	spiga	1.17	msg +='\tFor further information please visit : %s'%stage_out_faq
50	spiga	1.11	raise CrabException(msg)
51	spiga	1.4	if (self.node.find('T1_') + self.node.find('T2_')+self.node.find('T3_')) == -3: self.usePhedex = False
52	spiga	1.15
53			if not self.usePhedex and ( self.user_remote_dir == '' or self.user_se_path == '' ):
54	spiga	1.3	msg = 'You are asking to stage out without using CMS Storage Name convention. In this case you \n'
55	spiga	1.15	msg += '\t must specify both user_remote_dir and storage_path in the crab.cfg section [USER].\n '
56	spiga	1.17	msg += '\t For further information please visit : \n\t%s'%stage_out_faq
57	spiga	1.3	raise CrabException(msg)
58			self.sched = common.scheduler.name().upper()
59			self.protocol = self.srm_version
60	spiga	1.22
61			self.forced_path = '/store/user/'
62	fanzago	1.18	if self.sched in ['CAF','LSF']:
63			self.protocol = 'direct'
64			self.SE = {'CAF':'caf.cern.ch', 'LSF':''}
65	spiga	1.22	if self.sched == 'CAF': self.forced_path = '/store/caf/user/'
66
67	spiga	1.14	if not self.usePhedex:
68	spiga	1.15	self.forced_path = self.user_remote_dir
69	spiga	1.3	return
70
71			def getEndpoint(self):
72			'''
73			Return full SE endpoint and related infos
74			'''
75			self.lfn = self.getLFN()
76
77			#extract the PFN for the given node,LFN,protocol
78			endpoint = self.getStageoutPFN()
79	fanzago	1.27	### FEDE added a check for the final /
80			if ( endpoint[-1] != '/' ) : endpoint = endpoint + '/'
81			######################################
82	spiga	1.3
83			#extract SE name an SE_PATH (needed for publication)
84			SE, SE_PATH, User = self.splitEndpoint(endpoint)
85
86			return endpoint, self.lfn , SE, SE_PATH, User
87
88			def splitEndpoint(self, endpoint):
89			'''
90			Return relevant infos from endpoint
91			'''
92			SE = ''
93			SE_PATH = ''
94			USER = ''
95			if self.usePhedex:
96			if self.protocol == 'direct':
97			query=endpoint
98			SE_PATH = endpoint
99	fanzago	1.18	SE = self.SE[self.sched]
100	spiga	1.3	else:
101			url = 'http://'+endpoint.split('://')[1]
102			# python > 2.4
103			# SE = urlparse(url).hostname
104			scheme, host, path, params, query, fragment = urlparse(url)
105			SE = host.split(':')[0]
106			SE_PATH = endpoint.split(host)[1]
107			USER = (query.split('user')[1]).split('/')[1]
108			else:
109	fanzago	1.19	#### to test #####
110	spiga	1.21	# url = 'http://'+endpoint.split('://')[1]
111			# scheme, host, path, params, query, fragment = urlparse(url)
112			# SE = host.split(':')[0]
113			# SE_PATH = endpoint.split(host)[1]
114	spiga	1.20	SE = self.node
115			SE_PATH = self.user_se_path + self.user_remote_dir
116	spiga	1.3	try:
117			USER = (self.lfn.split('user')[1]).split('/')[1]
118			except:
119			pass
120
121			return SE, SE_PATH, USER
122	afanfani	1.2
123	spiga	1.3
124			def getLFN(self):
125			"""
126			define the LFN composing the needed pieces
127			"""
128			lfn = ''
129			l_User = False
130			if not self.usePhedex and (int(self.publish_data) == 0 and int(self.usenamespace) == 0) :
131			### add here check if user is trying to force a wrong LFN using a T2 TODO
132			## check if storage_name is a T2 (siteDB query)
133			## if yes :match self.user_lfn with LFNBaseName...
134			## if NOT : raise (you are using a T2. It's not allowed stage out into self.user_path+self.user_lfn)
135	spiga	1.15	lfn = self.user_remote_dir
136	spiga	1.3	return lfn
137			if self.publish_data_name == '' and int(self.publish_data) == 1:
138	spiga	1.17	msg = "Error. The [USER] section does not have 'publish_data_name'\n"
139			msg += '\tFor further information please visit : \n\t%s'%self.dataPub_faq
140	spiga	1.3	raise CrabException(msg)
141			if self.publish_data_name == '' and int(self.usenamespace) == 1:
142			self.publish_data_name = "DefaultDataset"
143	fanzago	1.26	if int(self.publish_data) == 1:
144			if self.sched in ['CAF']: l_User=True
145			primaryDataset = self.computePrimaryDataset()
146			### added the case lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name, publish=True)
147			### for the publication in order to be able to check the lfn length
148			lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name, publish=True) + '/${PSETHASH}/'
149			elif int(self.usenamespace) == 1:
150	spiga	1.3	if self.sched in ['CAF']: l_User=True
151			primaryDataset = self.computePrimaryDataset()
152	spiga	1.21	lfn = LFNBase(self.forced_path, primaryDataset, self.publish_data_name) + '/${PSETHASH}/'
153	spiga	1.3	else:
154	spiga	1.5	if self.sched in ['CAF','LSF']: l_User=True
155	spiga	1.21	lfn = LFNBase(self.forced_path,self.user_remote_dir)
156	spiga	1.3	return lfn
157
158			def computePrimaryDataset(self):
159			"""
160			compute the last part for the LFN in case of publication
161			"""
162			if (self.datasetpath.upper() != 'NONE'):
163			primarydataset = self.datasetpath.split("/")[1]
164			else:
165			primarydataset = self.publish_data_name
166			return primarydataset
167
168			def lfn2pfn(self):
169			"""
170			PhEDEx Data Service lfn2pfn call
171
172			input: LFN,node name,protocol
173			returns: DOM object with the content of the PhEDEx Data Service call
174			"""
175			params = {'node' : self.node , 'lfn': self.lfn , 'protocol': self.protocol}
176			params = urllib.urlencode(params)
177			datasvc_lfn2pfn="%s/lfn2pfn"%self.datasvc_url
178			try:
179	slacapra	1.24	urlresults = urllib.urlopen(datasvc_lfn2pfn, params)
180	spiga	1.3	urlresults = parse(urlresults)
181	slacapra	1.24	except IOError:
182			msg="Unable to access PhEDEx Data Service at %s"%datasvc_lfn2pfn
183			raise CrabException(msg)
184	spiga	1.3	except:
185			urlresults = None
186
187			return urlresults
188	afanfani	1.1
189	spiga	1.3	def parse_error(self,urlresults):
190			"""
191			look for errors in the DOM object returned by PhEDEx Data Service call
192			"""
193			errormsg = None
194			errors=urlresults.getElementsByTagName('error')
195			for error in errors:
196			errormsg=error.childNodes[0].data
197			if len(error.childNodes)>1:
198			errormsg+=error.childNodes[1].data
199			return errormsg
200
201			def parse_lfn2pfn(self,urlresults):
202			"""
203			Parse the content of the result of lfn2pfn PhEDEx Data Service call
204
205			input: DOM object with the content of the lfn2pfn call
206			returns: PFN
207			"""
208			result = urlresults.getElementsByTagName('phedex')
209
210			if not result:
211			return []
212			result = result[0]
213			pfn = None
214			mapping = result.getElementsByTagName('mapping')
215			for m in mapping:
216			pfn=m.getAttribute("pfn")
217			if pfn:
218			return pfn
219
220			def getStageoutPFN( self ):
221			"""
222			input: LFN,node name,protocol
223			returns: PFN
224			"""
225			if self.usePhedex:
226			fullurl="%s/lfn2pfn?node=%s&lfn=%s&protocol=%s"%(self.datasvc_url,self.node,self.lfn,self.protocol)
227			domlfn2pfn = self.lfn2pfn()
228			if not domlfn2pfn :
229			msg="Unable to get info from %s"%fullurl
230			raise CrabException(msg)
231
232			errormsg = self.parse_error(domlfn2pfn)
233			if errormsg:
234			msg="Error extracting info from %s due to: %s"%(fullurl,errormsg)
235			raise CrabException(msg)
236
237			stageoutpfn = self.parse_lfn2pfn(domlfn2pfn)
238			if not stageoutpfn:
239	afanfani	1.6	msg ='Unable to get stageout path from TFC at Site %s \n'%self.node
240			msg+=' Please alert the CompInfraSup group through their savannah %s \n'%self.FacOps_savannah
241			msg+=' reporting: \n'
242			msg+=' Summary: Unable to get user stageout from TFC at Site %s \n'%self.node
243			msg+=' OriginalSubmission: stageout path is not retrieved from %s \n'%fullurl
244	spiga	1.3	raise CrabException(msg)
245			else:
246	spiga	1.11	if self.sched in ['CAF','LSF'] :
247	spiga	1.12	stageoutpfn = self.user_se_path+self.lfn
248	spiga	1.11	else:
249			stageoutpfn = 'srm://'+self.node+':'+self.user_port+self.user_se_path+self.lfn
250	spiga	1.3
251			return stageoutpfn
252	afanfani	1.6
253
254
255			if __name__ == '__main__':
256			"""
257			Sort of unit testing to check Phedex API for whatever site and/or lfn.
258			Usage:
259			python PhEDExDatasvcInfo.py --node T2_IT_Bari --lfn /store/maremma
260
261			"""
262			import getopt,sys
263			from crab_util import *
264			import common
265			klass_name = 'SchedulerGlite'
266			klass = importName(klass_name, klass_name)
267			common.scheduler = klass()
268
269			lfn="/store/user/"
270			node='T2_IT_Bari'
271			valid = ['node=','lfn=']
272			try:
273			opts, args = getopt.getopt(sys.argv[1:], "", valid)
274			except getopt.GetoptError, ex:
275			print str(ex)
276			sys.exit(1)
277			for o, a in opts:
278			if o == "--node":
279			node = a
280			if o == "--lfn":
281			lfn = a
282
283			mycfg_params = { 'USER.storage_element': node }
284			dsvc = PhEDExDatasvcInfo(mycfg_params)
285			dsvc.lfn = lfn
286			print dsvc.getStageoutPFN()
287