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Replace dependency on gflags with argparse #1582

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merged 3 commits into from
Aug 7, 2020
Merged

Replace dependency on gflags with argparse #1582

merged 3 commits into from
Aug 7, 2020

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robbertvanginkel
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Since #1535, rules_docker depends on a global @pip_deps external repo and pip to install the python gflags library. This easily conflicts with other python rules that claim that name (#1404) and forces a dependency on pypi, making rules_docker harder to depend upon. I'd prefer not to have to setup a pypi mirror just to be able to reliably use rules_docker.

This seems pretty painful for importing a flag library, the comment in #1533 (comment) suggests

Or... just replace the single use of gflags with the python flag library. It is only container/build_tar

Which this PR attempts to implement.

This should no longer be necessary now that what is tested no longer
uses gflags.
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@smukherj1 smukherj1 left a comment

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Thanks for this PR! I been regretting switching to pip for gflags as well. Looks like a test image from image_test.py has a digest mismatch:

FAILED: //container:image_test (Summary)
--
  | /var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/ec321eb2cc2d0f8f91b676b6d4c66c29/execroot/io_bazel_rules_docker/bazel-out/k8-py2-fastbuild/testlogs/container/image_test/test.log
  | /var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/ec321eb2cc2d0f8f91b676b6d4c66c29/execroot/io_bazel_rules_docker/bazel-out/k8-py2-fastbuild/testlogs/container/image_test/test_attempts/attempt_1.log
  | /var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/ec321eb2cc2d0f8f91b676b6d4c66c29/execroot/io_bazel_rules_docker/bazel-out/k8-py2-fastbuild/testlogs/container/image_test/test_attempts/attempt_2.log
  | (14:26:42) INFO: From Testing //container:image_test:
  | ==================== Test output for //container:image_test:
  | ............................................F......
  | ======================================================================
  | FAIL: test_with_passwd_tar (__main__.ImageTest)
  | ----------------------------------------------------------------------
  | Traceback (most recent call last):
  | File "/var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/ec321eb2cc2d0f8f91b676b6d4c66c29/sandbox/linux-sandbox/853/execroot/io_bazel_rules_docker/bazel-out/k8-py2-fastbuild/bin/container/image_test.runfiles/io_bazel_rules_docker/container/image_test.py", line 435, in test_with_passwd_tar
  | self.assertDigest(img, 'b7a3e3ea93db1cb8068aa1cbaf11f9b771c33eb4d220abe87fe140d1260b17d2')
  | File "/var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/ec321eb2cc2d0f8f91b676b6d4c66c29/sandbox/linux-sandbox/853/execroot/io_bazel_rules_docker/bazel-out/k8-py2-fastbuild/bin/container/image_test.runfiles/io_bazel_rules_docker/container/image_test.py", line 70, in assertDigest
  | self.assertEqual(img.digest(), 'sha256:' + digest)
  | AssertionError: 'sha256:11ef1c5225ed570d11a9fc7c37a5959e91701318a023a6e754d50e34bd120929' != 'sha256:b7a3e3ea93db1cb8068aa1cbaf11f9b771c33eb4d220abe87fe140d1260b17d2'


The image in question is here. Please take a look!

Use action='append' instead of nargs='+' to allow accumulation of
multiple flags.
@robbertvanginkel
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Had a small mistranslation for replacing the multistring, should be fixed!

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: robbertvanginkel, smukherj1

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@smukherj1
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/gcbrun

@smukherj1 smukherj1 merged commit 9bfcd7d into bazelbuild:master Aug 7, 2020
@robbertvanginkel robbertvanginkel deleted the remove-gflags branch August 7, 2020 19:32
@robbertvanginkel
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Thanks!

@or-shachar
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This is great :) Solved a regression for Wix when upgrading to bazel 3.5.0
Can we create a matching release?

@luxe luxe mentioned this pull request Sep 15, 2020
apattidb pushed a commit to databricks/rules_docker that referenced this pull request Aug 20, 2021
* Replace gflags with build in argparse

* Remove pip_deps install from tests

This should no longer be necessary now that what is tested no longer
uses gflags.

* Fix multistring in argparse

Use action='append' instead of nargs='+' to allow accumulation of
multiple flags.
apattidb pushed a commit to databricks/rules_docker that referenced this pull request Aug 20, 2021
* Replace gflags with build in argparse

* Remove pip_deps install from tests

This should no longer be necessary now that what is tested no longer
uses gflags.

* Fix multistring in argparse

Use action='append' instead of nargs='+' to allow accumulation of
multiple flags.
apattidb pushed a commit to databricks/rules_docker that referenced this pull request Oct 13, 2021
* Replace gflags with build in argparse

* Remove pip_deps install from tests

This should no longer be necessary now that what is tested no longer
uses gflags.

* Fix multistring in argparse

Use action='append' instead of nargs='+' to allow accumulation of
multiple flags.
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5 participants