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Stop tagging commits pushed to epoch branches #33062

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19 changes: 15 additions & 4 deletions docs/admin/index.md
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Original file line number Diff line number Diff line change
Expand Up @@ -29,11 +29,22 @@ infrastructure which makes the project possible.
* :ref:`search`
```

## Secrets
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I found this section to not say anything useful, so I did a drive-by removal.

## Coordinating different CI systems

SSL certificates for all HTTPS-enabled domains are retrieved via [Let's
Encrypt](https://letsencrypt.org/), so that data does not represent an
explicitly-managed secret.
Multiple CI systems are used to run tests and upload results to
[wpt.fyi](https://wpt.fyi/). In order to ensure the same commit is
used across CI systems, there are "epoch branches" like
`epochs/daily` and `epochs/weekly` which can be used to trigger such
runs.

These branches are update by a [workflow](https://github.com/web-platform-tests/wpt/blob/master/.github/workflows/epochs.yml)
using the `./wpt rev-list` command. This command can also be used to
show what commits these branches have pointed to in the past, e.g., to
show what the `epochs/daily` branch has been the past 10 days:

```bash
./wpt rev-list --epoch 1d --max-count 10
```

## Third-party account owners

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9 changes: 1 addition & 8 deletions tools/ci/epochs_update.sh
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Expand Up @@ -32,18 +32,11 @@ main () {
exit 1
fi
git branch "${EPOCH_BRANCH_NAME}" "${EPOCH_SHA}"

# Only set epoch tag if is not already tagged from a previous run.
if ! git tag --points-at "${EPOCH_SHA}" | grep "${EPOCH_BRANCH_NAME}"; then
EPOCH_STAMP="$(date +%Y-%m-%d_%HH)"
git tag "${EPOCH_BRANCH_NAME}/${EPOCH_STAMP}" "${EPOCH_SHA}"
fi

ALL_BRANCHES_NAMES="${ALL_BRANCHES_NAMES} ${EPOCH_BRANCH_NAME}"
done
# This is safe because `git push` will by default fail for a non-fast-forward
# push, for example if the remote branch is ahead of the local branch.
git push --tags ${REMOTE} ${ALL_BRANCHES_NAMES}
git push ${REMOTE} ${ALL_BRANCHES_NAMES}
}

cd $WPT_ROOT
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