MSTransferor: resolve RSE expression for pileup location

[amaltaro]

Fixes #10038
Fixes #9969 (not really a fix though, more like a minor enhancement)

Status

ready

Description

• Improved logging for pileup rules evaluated by MSTransferor;
• STUCK rules with NO_SOURCES are never used as a valid location;
• Resolve the pileup RSE expressions in MSTransferor by using the MSTransferor Rucio object, which has an in-memory cache for 12h.

Is it backward compatible (if not, which system it affects?)

yes

Related PRs

none

External dependencies / deployment changes

none

[cmsdmwmbot]

Jenkins results:

• Unit tests: succeeded
• Pylint check: failed
  • 5 warnings and errors that must be fixed
  • 8 warnings
  • 68 comments to review
• Pycodestyle check: succeeded
  • 39 comments to review
• Python3 compatibility checks: succeeded

Details at https://cmssdt.cern.ch/dmwm-jenkins/view/All/job/DMWM-WMCore-PR-test/10615/artifact/artifacts/PullRequestReport.html

[amaltaro]

Works fine too!