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root/cvsroot/COMP/CRAB/python/DLSInfo.py
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Comparing COMP/CRAB/python/DLSInfo.py (file contents):
Revision 1.4 by afanfani, Sun Jan 29 01:46:08 2006 UTC vs.
Revision 1.8 by afanfani, Tue May 30 23:33:58 2006 UTC

# Line 5 | Line 5 | from crab_exceptions import *
5   from crab_util import *
6   import common
7  
8 + try:
9 +    import dlsApi
10 +    import dlsClient
11 +    from dlsDataObjects import DlsLocation, DlsFileBlock, DlsEntry
12 + except:
13 +    try:
14 +        Crabpydir=commands.getoutput('which crab')
15 +        Topdir=string.replace(Crabpydir,'/python/crab','')
16 +        sys.path.append(Topdir+'/DLSAPI')
17 +        import dlsApi
18 +        import dlsClient
19 +        from dlsDataObjects import DlsLocation, DlsFileBlock, DlsEntry
20 +    except:
21 +        msg="ERROR no DLS API available"
22 +        raise CrabException(msg)
23 +                                                                                            
24 + ## for python 2.2 add the pyexpat.so to PYTHONPATH
25 + pythonV=sys.version.split(' ')[0]
26 + if pythonV.find('2.2') >= 0 :
27 + Crabpydir=commands.getoutput('which crab')
28 + Topdir=string.replace(Crabpydir,'/python/crab','')
29 + extradir=Topdir+'/DLSAPI/extra'
30 + if sys.path.count(extradir) <= 0:
31 +   if os.path.exists(extradir):
32 +    sys.path.insert(0, extradir)
33 +
34 +
35   class DLSError:
36 <  def __init__(self, fileblocks):
37 <    print '\nERROR accessing DLS for fileblock '+fileblocks+'\n'
38 <    pass
36 >    def __init__(self, fileblocks):
37 >        print '\nERROR accessing DLS for fileblock '+fileblocks+'\n'
38 >        pass
39  
40  
41   class DLSNoReplicas(exceptions.Exception):
42 <  def __init__(self, FileBlock):
43 <    args ="No replicas exists for fileblock: "+FileBlock+"\n"
44 <    exceptions.Exception.__init__(self, args)
45 <    pass
46 <
47 <  def getClassName(self):
48 <    """ Return class name. """
49 <    return "%s" % (self.__class__.__name__)
50 <
51 <  def getErrorMessage(self):
52 <    """ Return exception error. """
53 <    return "%s" % (self.args)
42 >    def __init__(self, FileBlock):
43 >        args ="No replicas exists for fileblock: "+FileBlock+"\n"
44 >        exceptions.Exception.__init__(self, args)
45 >        pass
46 >
47 >    def getClassName(self):
48 >        """ Return class name. """
49 >        return "%s" % (self.__class__.__name__)
50 >
51 >    def getErrorMessage(self):
52 >        """ Return exception error. """
53 >        return "%s" % (self.args)
54 >
55  
56   ##############################################################################
57   # Class to extract info from DLS
58   ##############################################################################
59  
60   class DLSInfo:
61 <     def __init__(self, fileblocks):
62 <          self.fileblocks = fileblocks
63 <          self.DLSclient_ = 'dls-get-se '
64 <          self.DLSServer_ = 'lxgate10.cern.ch'
65 <          self.DLSServerPort_ = '18081'
66 <          #self.DLSServerPort_ = '18080'
67 <          
68 <          out=commands.getstatusoutput('which '+self.DLSclient_)
69 <          if out[0]>0:
70 <             msg="ERROR no DLS CLI available in $PATH : %s"%self.DLSclient_
61 >    def __init__(self, type):
62 >        if type=="DLS_TYPE_DLI":
63 >           endpoint="lfc-cms-test.cern.ch/grid/cms/DLS/LFCProto"
64 >           try:
65 >             import xml.dom.ext.reader
66 >           except:
67 >             crabdir=os.getenv('CRABDIR')
68 > ## Let the user set up PyXML by hand
69 >             msg="There is no setup of PyXML python module required by DLS (DLI). Do the following:\n"
70 >             msg+=" - check that in  %s/configure  the function configureDLSAPI is not commented \n"%crabdir
71 >             msg+=" - uncomment it and re-run the configuration :"
72 >             msg+="\n    cd %s\n"%crabdir
73 >             msg+="     ./configure\n"
74 >             msg+="     source crab.(c)sh\n"
75               raise CrabException(msg)
76  
77 +        elif type=="DLS_TYPE_MYSQL":
78 +           endpoint="lxgate10.cern.ch:18081"
79 +        else:
80 +           msg = "DLS type %s not among the supported DLS ( DLS_TYPE_DLI and DLS_TYPE_MYSQL ) "%type
81 +           raise CrabException(msg)
82 +
83 +        try:
84 +          self.api = dlsClient.getDlsApi(dls_type=type,dls_endpoint=endpoint)
85 +        except dlsApi.DlsApiError, inst:
86 +          msg = "Error when binding the DLS interface: %s  Server %s"%(str(inst),self.DLSServer_)
87 +          #print msg
88 +          raise CrabException(msg)
89 +
90   # ####################################
91 <     def getReplicas(self):
92 <         """
93 <          query DLS to get replicas
94 <         """
95 <         ##
96 <         cmd = self.DLSclient_+" --port "+self.DLSServerPort_+" --host "+self.DLSServer_+" --datablock "+self.fileblocks
97 <         #print cmd
98 <         sites = runCommand(cmd)
99 <         sites=string.strip(sites)
100 <         if len(sites)<=0:
101 <           raise DLSNoReplicas(self.fileblocks)
91 >    def getReplicas(self,fileblocks):
92 >        """
93 >        query DLS to get replicas
94 >        """
95 >        ##
96 >        try:
97 >          entryList=self.api.getLocations([fileblocks])
98 >        except dlsApi.DlsApiError, inst:
99 >          msg = "Error in the DLS query: %s." % str(inst)
100 >          #print msg
101 >          raise DLSNoReplicas(fileblocks)
102 >
103 >        ListSites=[]
104 >        for entry in entryList:
105 >         for loc in entry.locations:
106 >           ListSites.append(str(loc.host))
107 >        if len(ListSites)<=0:
108 >          raise DLSNoReplicas(fileblocks)
109  
110 <         ListSites=string.split(string.strip(sites),'\n')
59 <         return ListSites        
110 >        return ListSites        

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