The CernVM-FS python package allows for the inspection of CernVM-FS repositories using python. In particular to browse their file catalog hierarchy, inspect CernVM-FS repository manifests (a.k.a. .cvmfspublished files) and the history of named snapshots inside any CernVM-FS repository.
The support for this package is low: best effort, and with very limited testing.
Example Usage:
import cvmfs
repo = cvmfs.open_repository('http://cvmfs.fnal.gov/cvmfs/grid.cern.ch') print 'Last Revision:' , repo.manifest.revision , repo.manifest.last_modified root_catalog = repo.retrieve_catalog(repo.manifest.root_catalog) print 'Catalog Schema:' , root_catalog.schema for nested_catalog_ref in root_catalog.list_nested(): print 'Nested Catalog at:' , nested_catalog_ref.root_path print 'Listing repository' for full_path, dirent in repo: print full_path
Example programs "big_catalogs" and "catdirusage" are supplied in the "utils" directory, which are also useful for figuring out where to split up the catalogs in a cvmfs repository. Also, "cvmfs_search" is useful as a way to find out the original path(s) that correspond to a cvmfs hash.
Rpms are available in the cvmfs-contrib yum repositories for EL6 & 7. See https://cvmfs-contrib.github.io for instructions to enable one of those repositories. Then to install simply do:
The full test suite can be run by this command in the cvmfs subdirectory:
$ python3 test
The signature verification tests fail by default on EL9 because sha1 is disallowed there for certificate checks. That can be worked around with