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Base stamping decisions on --stamp configuration, not attributes on t… #1878

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merged 1 commit into from
Nov 26, 2021

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alexeagle
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…he rule

This follows the example of rules_go and rules_nodejs.

It means we don't produce cache-busting outputs unless the user
explicitly requests non-deteriminism in the build with --stamp.

BREAKING CHANGE:

  • To get stamped outputs, users must now call bazel with --stamp
  • the stamp attribute was removed from some providers
  • the stamp attribute was deprecated on container_push and container_bundle, it is now removed
  • the stamp attribute was removed from container_image, there is no
    replacement

Fixes #1451

@google-cla google-cla bot added the cla: yes label Jun 2, 2021
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Could we add an update to README.md that explains this behavior?

@alexeagle alexeagle force-pushed the stamping branch 7 times, most recently from e9ff310 to 4ccc7a5 Compare June 4, 2021 13:59
@alexeagle alexeagle marked this pull request as ready for review June 4, 2021 14:02
@alexeagle alexeagle requested review from pcj and smukherj1 as code owners June 4, 2021 14:02
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I think this is good but as we discussed we should wait for a major version change whenever we're ready.

The first option is to use stamping. Stamping is enabled when a supported
attribute contains a python format placeholder (e.g. `{BUILD_USER}`).
The first option is to use stamping.
Stamping is enabled when bazel is run with `--stamp`.
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Can this be configured with .bazelrc? I know some users want to always stamp containers so showing them an easy to use setup to make that always happen is probably a good idea.

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Updated this to still have a stamp attribute on our three stamp-aware rules, and that attribute is now a trinary. So you can still use stamp=always behavior like before.

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Okay so what's our cadence for major releases?
Since we haven't released a 1.0 semver dictates that breaking changes are in every minor. So we don't have a way to signal this beyond either just a 0.18.0 including this change.
I think we should have a 1.0. Could discuss doing that now? holding this change for that doesn't make a difference for semver though

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gravypod commented Jun 5, 2021 via email

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If we do 1.0 we need to say what that means and how we'll version in the future. Can discuss at our meeting Monday but I'll have to duck out early due to conflict

@alexeagle alexeagle added this to the 1.0 milestone Jun 7, 2021
@alexeagle alexeagle force-pushed the stamping branch 2 times, most recently from 5eb0478 to cfcff81 Compare November 25, 2021 04:58
This follows the example of rules_go and rules_nodejs.

It means we don't produce cache-busting outputs unless the user
explicitly requests non-deteriminism in the build with --stamp.

BREAKING CHANGE:
- To get stamped outputs, users must now call bazel with `--stamp`
- the stamp attribute is removed from some providers
- the stamp attribute is now trinary

Fixes bazelbuild#1451
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fyi @aptenodytes-forsteri rebased and landable.

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stamping results in different digest with remote cache
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