Allow querying submit requirements using the label operator

This change is preserving backward compatibility of the label operator
using the status operand with new submit requirements. Previously users
were able to query labels like:
  * label:Code-Review=NEED
  * or, label:Code-Review=OK

These queries were matching with changes that emitted a submit record
with status=NEED or status=OK respectively. Submit records were emitted
when there were label functions, or custom/prolog submit rules
configured for the project, but these are being deprecated.

With the new submit requirements, submit records are no longer emitted.
This means that any queries with the label formats mentioned above will
no longer match with changes.

In this change, we backfill entries for the label operator with the
status operand from submit requirement results using the following
rules:
  * if SR result = UNSATISFIED, we emit two label entries: NEED, REJECT
  * if SR result = SATISFIED or OVERRIDDEN, we emit two label entries:
    OK, MAY.

For example if a change has a "CR" requirement that is satisfied, a
query with "label:CR=OK" or "label:CR=MAY" will match with the change.

With this change, the format
<label-name>=<submit-record-status>,<approver>
will not work with backfilled submit requirement results. We might
consider implementing this in a future change if there is a need for it.

The implementation is using the submit requirement name as if it was a
label name. This is not very accurate since a SR might rely on some
conditions that's not using labels, but we accept this to simplify the
implementation.

Note that this change also marks the operator
`label:<label-name>=<status>` as deprecated since users should not rely
on it anymore. We'll implement a submit requirment predicate that
should be used for this use case instead.

Google-Bug-Id: b/218663294
Change-Id: Ic8b48101ba95a83a1b8a41bec3e976f1aa97c1e7
Release-Notes: Add support for querying SR Results using the label operator.
4 files changed
tree: 8f3d7fd72fe1f5680ee0680c7decc286629707ec
  1. .settings/
  2. .ts-out/
  3. antlr3/
  4. contrib/
  5. Documentation/
  6. e2e-tests/
  7. java/
  8. javatests/
  9. lib/
  10. modules/
  11. plugins/
  12. polygerrit-ui/
  13. prolog/
  14. prologtests/
  15. proto/
  16. resources/
  17. tools/
  18. webapp/
  19. .bazelignore
  20. .bazelproject
  21. .bazelrc
  22. .bazelversion
  23. .editorconfig
  24. .git-blame-ignore-revs
  25. .gitignore
  26. .gitmodules
  27. .gitreview
  28. .mailmap
  29. .pydevproject
  30. .zuul.yaml
  31. BUILD
  32. COPYING
  33. INSTALL
  34. Jenkinsfile
  35. package.json
  36. README.md
  37. SUBMITTING_PATCHES
  38. version.bzl
  39. WORKSPACE
  40. yarn.lock
README.md

Gerrit Code Review

Gerrit is a code review and project management tool for Git based projects.

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Gerrit makes reviews easier by showing changes in a side-by-side display, and allowing inline comments to be added by any reviewer.

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Install binary packages (Deb/Rpm)

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On Debian/Ubuntu run:

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NOTE: release is a counter that starts with 1 and indicates the number of packages that have been released with the same version of the software.

On CentOS/RedHat run:

    yum clean all && yum install gerrit-<version>[-<release>]

On Fedora run:

    dnf clean all && dnf install gerrit-<version>[-<release>]

Use pre-built Gerrit images on Docker

Docker images of Gerrit are available on DockerHub

To run a CentOS 8 based Gerrit image:

    docker run -p 8080:8080 gerritcodereview/gerrit[:version]-centos8

To run a Ubuntu 20.04 based Gerrit image:

    docker run -p 8080:8080 gerritcodereview/gerrit[:version]-ubuntu20

NOTE: release is optional. Last released package of the version is installed if the release number is omitted.