Support of private frontier Key for workflow-specific caching

[ggovi]

PR description:

We are enabling the use of workflow-specific private keys for the condition data access with frontier. The goal is ensuring that the fresh-keys identifying the cached data in the squids are not shared with other workflows/processes. In this way, unintended interferences and unwanted data are avoided.

The keys will be provided as an external parameter for the read-only ESSource-based workflows, and as the content of a specified file for the update-capable workflows.

PR validation:

Unit tests and integration tests

Backport of #33505

The backport is required to operate the online workflows: HLT, DQM/BeamSpot

[cmsbuild]

A new Pull Request was created by @ggovi for CMSSW_11_3_X.

It involves the following packages:

CondCore/DBOutputService
CondCore/ESSources

@malbouis, @yuanchao, @christopheralanwest, @cmsbuild, @tlampen, @ggovi, @pohsun, @francescobrivio can you please review it and eventually sign? Thanks.
@mmusich, @tocheng this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[ggovi]

please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d463cd/14648/summary.html
COMMIT: f2c9ec9
CMSSW: CMSSW_11_3_X_2021-04-27-2300/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/33558/14648/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 38
• DQMHistoTests: Total histograms compared: 2877046
• DQMHistoTests: Total failures: 6
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 2877017
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: -0.004 KiB( 37 files compared)
• DQMHistoSizes: changed ( 312.0 ): -0.004 KiB MessageLogger/Warnings
• Checked 160 log files, 37 edm output root files, 38 DQM output files
• TriggerResults: no differences found

[ggovi]

+1

[tlampen]

+alca

• comparisons ok
• backport

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_11_3_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_12_0_X is complete. This pull request will now be reviewed by the release team before it's merged. @silviodonato, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[qliphy]

+1