Usecase Overview

• Business Goal: Support group administrators in coordinating plugin versions across tenants, automatically identify drift, trigger alignment or reminders, and generate auditable compliance reports.
• Success Measures: Drift detection latency <10 minutes; policy enforcement success ≥95%; conflict simulation accuracy ≥98%; compliance report generation ≤10 minutes covering all tenants.
• Scenario Alignment: Implements Stage 4 of the main scenario and works alongside version detection and grey upgrade to complete governance at the organisation level.

A centralised version policy keeps core plugins aligned across tenants without breaking isolation, reducing collaboration friction and compliance exposure.

Context & Assumptions

• Prerequisites
  • plugin-multi-tenant-sync and plugin-version-governance flags are active.
  • Group tenant directory can provide tenant roster, permissions, and policy baselines.
  • Governance service stores each tenant’s manifests and recent upgrade history.
  • Notification & audit systems integrate with enterprise address books, IM channels, and report archives.
• Inputs / Outputs
  • Inputs: Target plugin list, policy definitions (baseline, exemptions, conflict rules), tenant version snapshot.
  • Outputs: Drift roster, upgrade tasks/reminders, conflict reports, group compliance reports, audit records.
• Boundaries
  • Per-tenant grey rollout is covered in the grey use case.
  • Offline package distribution and Marketplace review are out of scope.

Solution Blueprint

Architecture Layers

Layer	Module	Responsibility	Entry Point
Data aggregation	internal/version/governance/snapshot_aggregator.go	Aggregate tenant versions, build baseline snapshot, detect drift	services/version/governance
Policy enforcement	internal/version/governance/policy_enforcer.go	Apply policies, simulate conflicts, generate execution plan	services/version/governance
Task orchestration	internal/version/governance/tenant_task_runner.go	Launch upgrade tasks/reminders for drift tenants, track progress	services/version/governance
Reporting & audit	internal/audit/version/policy_reporter.go	Produce compliance reports, log exemptions & outcomes	services/audit/version
Tooling	packages/cli/src/commands/version/policy.ts	CLI/console policy management, simulation, execution monitoring	packages/cli

Flow & Sequence

1. Step 1 – Snapshot & drift detection: Scheduled or manual trigger aggregates tenant plugin versions and compares against baseline.
2. Step 2 – Policy evaluation & simulation: Assess drift against policies, resolve exemptions/conflicts, and propose actions.
3. Step 3 – Execution & notification: Auto-trigger upgrade tasks or send reminders; surface items needing manual action.
4. Step 4 – Reporting & follow-up: Generate compliance reports with completed, outstanding, and planned actions, and store in audit.

Contracts & Interfaces

• Inbound
  • POST /internal/version/governance/snapshot — Generate group version snapshot.
  • POST /internal/version/policy/enforce — Execute policy and return the plan.
• Outbound
  • POST /internal/notify/version — Notify drift tenant admins and group owners.
  • POST /internal/version/upgrade/plan — Create upgrade plans for drift tenants.
  • POST /internal/audit/version — Persist policy execution, exemptions, conflicts.
• Configs & Scripts
  • config/version/multi_tenant_baselines.yaml — Policy baselines, exemptions, SLA.
  • config/version/policy_profiles.yaml — Policy templates, weightings, notification setup.
  • scripts/workflows/version-policy-sync.mjs — Synchronisation script for multi-tenant policies.

Implementation Checklist

Item	Description	Status	Owner
Version snapshot	Build snapshot & drift detection with incremental updates	[ ]	Matrix Ops
Policy engine	Support conflict simulation, exemptions, priority queue	[ ]	Matrix Ops
Upgrade tasks	Integrate with upgrade orchestrator, track status, write back results	[ ]	Alex Wei
Notifications & reporting	Group templates, compliance exports, exemption ledger	[ ]	Erin Xu
CLI / Console	Policy management UI, simulation, execution monitoring	[ ]	Michael Hu

Testing Strategy

• Unit: Snapshot generation, conflict simulation, task runner state machine, report builder.
• Integration: Run scripts/workflows/version-policy-sync.mjs to validate drift detection, conflict handling, upgrade task & notification flows.
• E2E: Replay scenario cases D-1/D-2 to confirm drift remediation, conflict reporting, and exemption processing.
• Non-functional: Large tenant dataset performance, concurrent policy enforcement, notification flood control.

Observability & Ops

• Metrics: version.policy.drift_total, version.policy.enforced_total, version.policy.conflict_total, version.policy.compliance_rate.
• Logs: Tenant, policy, target version, decision, exemption reason; mask sensitive data; retain ≥365 days.
• Alerts: Drift unresolved past SLA, policy enforcement failures, conflict spike, report generation errors.
• Dashboards: Group Version Compliance Dashboard, Policy Conflict Monitor, workflow-metrics.mjs.

Rollback & Failure Handling

• Rollback: Pause policy execution, cancel pending tasks, restore previous snapshot, notify group admins to reassess.
• Remediation: Offer manual correction path, regenerate drift list, capture manual conflict resolutions.
• Data Repair: Run scripts/workflows/version-policy-reconcile.mjs to align snapshots, enforcement status, and audits.

Follow-ups & Risks

Risk / Item	Impact	Mitigation	Owner	ETA
Complex policy conflict handling	Execution efficiency	Provide simulation tools & priority scheduling	Matrix Ops	2025-12-22
Diverse notification channels	Collaboration efficiency	Integrate enterprise directory and IM for batch reminders	Erin Xu	2025-12-18
Tenant privacy & isolation	Compliance	Restrict visibility, apply masking or aggregated views	Grace Lin	2025-12-15

References & Links

• Scenario: docs/scenarios/plugin-lifecycle/SCN-DEV-PLUGIN-VERSION-MULTI-TENANT-001.md
• Main scenario: docs/scenarios/plugin-lifecycle/SCN-DEV-PLUGIN-VERSION-COMPAT-001.md
• Standards: docs/standards/powerx-plugin/release/Group_Governance_Guide.md
• Config: config/version/multi_tenant_baselines.yaml, config/version/policy_profiles.yaml