Pigweed Oncall Workflows

This skill provides operational workflows and runbooks for the Pigweed oncall rotation. It is designed to be manually triggered via slash commands to prevent unnecessary auto-loading.

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Invoking this Skill

Trigger this skill and its subskills explicitly using slash commands in the prompt:

• /oncall: Access the general oncall workflow, overview, and task router.
• /oncall roll-cipd or /roll-cipd: Trigger the CIPD client update subskill (b/315378787), which rolls the pin, creates a pw_env_setup: Roll cipd commit, and submits it.
• /oncall presubmit: Run presubmit verification on your branch or stack.

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Oncall Responsibilities & Subskills

Subskill / Command	Description	Runbook / Tool
/roll-cipd	Update pinned CIPD version, create pw_env_setup: Roll cipd commit, and submit to Gerrit (b/315378787)	roll_cipd.md / roll_cipd.py
/oncall presubmit	Run presubmit checks across commit stacks	Run Presubmit Checks
/oncall review	Review incoming and ongoing Git/Gerrit patches	Code Review

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Subskill: Roll CIPD Client (b/315378787)

CIPD (Chrome Infra Package Deployer) is used by Pigweed to install and manage prebuilt toolchains and binaries. Updating the CIPD client pin is a recurring oncall maintenance task tracked under b/315378787.

Triggers

• Explicit user slash commands: /roll-cipd or /oncall roll-cipd.
• Explicit user prompt during oncall rotation specifically requesting CIPD pin roll.

Guards

• Do not auto-load on general tool, environment, or setup tasks unless explicitly requested.
• Do not use the mutable latest ref in .cipd_version (it causes selfupdate validation failures).
• Always ensure all platform digests in .cipd_version.digests are generated and verified.

Execution Workflow

Option 1: Automated Roll, Commit & Push (Recommended)

Run the oncall helper script:

# Roll and commit
python3 .agents/skills/oncall/scripts/roll_cipd.py --commit

# Roll, commit, and submit to Gerrit
python3 .agents/skills/oncall/scripts/roll_cipd.py --commit --push

Option 2: Manual Roll, Commit & Push

1. Determine candidate git_revision tags:

   python3 pw_env_setup/py/pw_env_setup/cipd_setup/wrapper.py describe \
       infra/tools/cipd/linux-amd64 -version latest
   

2. Roll version and update digests:

   python3 pw_env_setup/py/pw_env_setup/cipd_setup/wrapper.py selfupdate-roll \
       -version-file pw_env_setup/py/pw_env_setup/cipd_setup/.cipd_version \
       -version git_revision:<HASH>
   

3. Check and verify:

   python3 pw_env_setup/py/pw_env_setup/cipd_setup/wrapper.py selfupdate-roll \
       -version-file pw_env_setup/py/pw_env_setup/cipd_setup/.cipd_version \
       -check
   

4. Verify client functionality:

   python3 pw_env_setup/py/pw_env_setup/cipd_setup/wrapper.py -version
   

5. Commit changes:

   git add pw_env_setup/py/pw_env_setup/cipd_setup/.cipd_version \
       pw_env_setup/py/pw_env_setup/cipd_setup/.cipd_version.digests
   git commit -m "$(cat <<'EOF'
   

pw_env_setup: Roll cipd

Rolls CIPD client version to <git_revision>.

Bug: 315378787 EOF )"

6. Submit to Gerrit:
```bash
git push origin HEAD:refs/for/main%ready

For full details and troubleshooting, see the roll_cipd.md runbook.