Policy Packages Overview
Policy packages are separate Python packages that can be used to add experiment-specific customisations to Rucio. They typically customise Rucio's handling of permissions and schema as well as optionally adding their own algorithms for various purposes, such as lfn to pfn conversion and surl construction.
Policy packages may be installed from a Python package repository such
as PyPi or they may simply be installed in a
local directory. In the latter case this directory will need to be added
to the Rucio server's PYTHONPATH environment variable.
The name of the policy package in use is specified by the package value
in the policy section of the Rucio configuration file. Alternatively,
the package can be specified by the RUCIO_POLICY_PACKAGE environment
variable (if both are set, the environment variable takes priority). If
no package is specified, a built in generic policy will be used. If a
package is specified but cannot be loaded, Rucio will exit with an error.
Multi-VO Rucio installations can load a different policy package for each
VO. In this case, the configuration parameter or environment variable name
is suffixed with the VO name (for example, package-vo1 or
RUCIO_POLICY_PACKAGE_VO1).