GitHub - wyang007/rucioN2N-for-Xcache: Please use the repo in Xrootd (Frozen: 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 wyang007 Merge pull request #2 from xrootd/master Nov 10, 2020 6002e67 · Nov 10, 2020 History 79 Commits
LICENSE	LICENSE	Create LICENSE	May 12, 2017
Makefile	Makefile	remove dependency on -lXrdPfc-5 (or -lXrdFileCache-4)	May 3, 2020
README	README	Update minimum requirement on xrootd	Aug 2, 2019
ReleaseNotes.txt	ReleaseNotes.txt	Update minimum requirement on xrootd	Aug 2, 2019
XrdOssStatInfoDCP.cc	XrdOssStatInfoDCP.cc	Revert "add roots: support; disable arbitrary local path access"	Nov 10, 2020
XrdOucName2NameDCP4RUCIO.cc	XrdOucName2NameDCP4RUCIO.cc	Revert "add roots: support; disable arbitrary local path access"	Nov 10, 2020
cacheQuery.cc	cacheQuery.cc	use the new XrdPosixCache interface to query cache file info	Jun 1, 2019
cacheQuery.hh	cacheQuery.hh	use the new XrdPosixCache interface to query cache file info	Jun 1, 2019
checkPFCcinfo.cc	checkPFCcinfo.cc	simply and bug fix when xrootd config variable is in oss.localroot	Jan 26, 2019
checkPFCcinfo.hh	checkPFCcinfo.hh	avoid open remote data source for fully cached files	Sep 11, 2018
pfn2cache.cc	pfn2cache.cc	support caching of local files, prepar to support http/https data source	Feb 2, 2019
pfn2cache.hh	pfn2cache.hh	support caching of local files, prepar to support http/https data source	Feb 2, 2019
proxy_cache_dump.py	proxy_cache_dump.py	Fix typo in file name	Mar 6, 2018
rucioGetMetaLink.cc	rucioGetMetaLink.cc	Revert "add roots: support; disable arbitrary local path access"	Nov 10, 2020
rucioGetMetaLink.hh	rucioGetMetaLink.hh	use the new XrdPosixCache interface to query cache file info	Jun 1, 2019
rucioN2N-for-Xcache.spec	rucioN2N-for-Xcache.spec	update version and minimum xrootd requirement	Aug 2, 2019
update_cache.py	update_cache.py	python script to udate proxy cache content with RUCIO	Jun 8, 2017
xcache.singularity.def	xcache.singularity.def	xrootd-4.10+ require libmacaroons (from EPEL)	Aug 15, 2019

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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.