ADO ↔ GitHub Integration: Pipeline Status Monitoring

[behzad-mir]

Problem Statement

The ACN scheduled release workflow (and future automation) needs to monitor Azure DevOps pipeline status from GitHub Actions. Currently, there's no authenticated path from GitHub → ADO API for the msazure/One project.

Use Cases

1. Scheduled release workflow — After tag creation, monitor ACN PR Pipeline and CNI Release Test completion
2. Future automation — Any GitHub workflow that needs to know if an ADO pipeline passed/failed
3. PR gating — Could enable GitHub merge queue to wait for ADO pipeline results

Options Explored

#	Approach	Status
1	OIDC SP → ADO API (direct polling)	❌ Blocked — needs ADO org admin to add SP
2	ADO → GitHub bridge (GitHub App posts statuses)	✅ Proven on fork — recommended short-term
3	PAT-based auth	❌ Rejected — 5-day expiry, not viable
4	Reuse Build Validations SP	❌ Rejected — overscoped (full sub access)
5	Migrate ADO tests to GH workflows	🔮 Long-term — eliminates auth problem entirely

Recommended: Option 2 (ADO → GitHub Bridge)

Architecture:

Tag push → ADO auto-triggers pipeline (native service connection)
         → ADO pipeline posts "pending" commit status to GitHub (via GitHub App)
         → ADO pipeline finishes → posts "success"/"failure" to GitHub
         → GitHub workflow polls: gh api commits/<sha>/statuses
         → No ADO API access needed from GitHub side

Steps:

1. Create GitHub App with statuses:write on Azure/azure-container-networking
2. Add App ID + private key as secret variables in ADO pipelines
3. Add status-posting steps to .pipelines/pipeline.yaml and .pipelines/cni/pipeline.yaml
4. Update scheduled release workflow to poll GitHub commit statuses

Security: Low risk — App only has statuses:write (cosmetic), secrets live in ADO only, pipelines only trigger on protected refs.

Precedent: Same pattern used by cilium-private repo.

Long-term: Option 5 (Migrate to GH Workflows)

Suggested by @QxBytes — if E2E tests ran as GitHub Actions workflows:

• GITHUB_TOKEN natively polls workflow status (zero auth setup)
• Tag push triggers workflows same as ADO
• Copilot agents work better with GH workflows
• Test workloads mainly interact with AKS clusters — portable

Effort: Large (rewrite pipeline YAML). Timeline: Weeks/months.

ADO Pipeline Details

Pipeline	File	Trigger
ACN PR Pipeline	.pipelines/pipeline.yaml	PR, merge queue, tags, nightly
CNI Release Test	.pipelines/cni/pipeline.yaml	Tags (v*, dropgz/*, azure-ipam/*)
GitHub Release	Def 393797 in msazure/One	Manual

Contacts

• Build Validations SP owners: @MiguelGo, @QxBytes (John Payne)
• ADO org: msazure, Project: One
• acn-release-bot SP: App ID 75013c7b-3bea-441b-952c-e13d7c9247bc (Object ID 29d8f13a-6ba6-4374-ad34-9cf875064d74)

Related

• PR feat: Add automated release orchestrator workflow #4410 — Scheduled release workflow (has wait-pipeline CLI ready for Option 1)
• Fork test run #28116621752 — Proves Option 2 polling pattern works

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