def mapLFN(self, site, lfn, protocol=None):
"""Map LFN to given site"""
if not protocol:
protocol = 'srmv2'
data = {'lfn': lfn, 'node': site}
if protocol:
data['protocol'] = protocol
self.log.info("Mapping LFN %s for site %s using PhEDEx datasvc." % \
(lfn, site))
data = phedex_datasvc('lfn2pfn', self.phedex_url, **data)
try:
pfn = data['phedex']['mapping'][0]['pfn']
except:
raise Exception("PhEDEx data service did not return a PFN!")
self.log.info("PhEDEx data service returned PFN %s for LFN %s." % \
(pfn, lfn))
return pfn
def replicas(self, lfn, token=None, user=None):
"""Find LFN replicas in PhEDEx data-service"""
self.log.info("Looking for the block of LFN %s." % lfn)
block = self._dbs.blockLookup(lfn)
query = {'block':block}
self.log.info("Looking for replicas of %s" % block)
results = phedex_datasvc('fileReplicas', self.phedex_url, block=block)
blocks = [i for i in results['phedex']['block'] \
if i.get('name', None) == block]
if not blocks:
raise Exception("Requested LFN does not exist in any block known " \
"to PhEDEx.")
block = blocks[0]
files = [i for i in block.get('file', []) \
if i.get('name', None) == lfn]
if not files:
raise Exception("Internal error: PhEDEx does not think LFN is in " \
"the same block as DBS does.")
file = files[0]
replicas = [i['node'] for i in file.get('replica', []) if 'node' in i]
self.log.info("There are the following replicas of %s: %s." % \
(lfn, ', '.join(replicas)))
return replicas
