GitHub - xrootd/rucioN2N-for-Xcache: Xrootd Name-to-Name plugin for Disk Caching Proxy to utilize RUCIO metalink

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Name		Name	Last commit message	Last commit date
Latest commit History 81 Commits
LICENSE		LICENSE
Makefile		Makefile
README		README
ReleaseNotes.txt		ReleaseNotes.txt
XrdOssStatInfoDCP.cc		XrdOssStatInfoDCP.cc
XrdOucName2NameDCP4RUCIO.cc		XrdOucName2NameDCP4RUCIO.cc
cacheQuery.cc		cacheQuery.cc
cacheQuery.hh		cacheQuery.hh
checkPFCcinfo.cc		checkPFCcinfo.cc
checkPFCcinfo.hh		checkPFCcinfo.hh
pfn2cache.cc		pfn2cache.cc
pfn2cache.hh		pfn2cache.hh
proxy_cache_dump.py		proxy_cache_dump.py
rucioGetMetaLink.cc		rucioGetMetaLink.cc
rucioGetMetaLink.hh		rucioGetMetaLink.hh
rucioN2N-for-Xcache.spec		rucioN2N-for-Xcache.spec
update_cache.py		update_cache.py
xcache.singularity.def		xcache.singularity.def

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Author: Wei Yang   SLAC National Accelerator Laboratory / Stanford University

rucioN2N-for-Xcache requires xrootd. The minimum requirements of xrootd is specified in the Release Notes.

This is a Xrootd (seach Github for xrootd) Ouc Name2Name plugin module to effeciently cache LHC ATLAS data files managed by the experiment's Distrubite Data Management (DDM) system (RUCIO). 

In RUCIO, multiply copies of one such file may be storaged in various locations. The file paths all end with .../scope/XX/XX/file. The plugin module will help determine identical files distributed at different locations to improve Xrootd cache (memory cache or proxy storage cache) efficiency. 

When accessed via the ATLAS global Logical File Name (gLFN, which is equavalent to RUCIO DID), this plug-in will utilize the RUCIO's metalink capability to fetch the data from an optimal source.