Persist timeline and A2A state in shared SQL storage by Copilot · Pull Request #1778 · groupthinking/EventRelay

Copilot · 2026-09-08T22:51:53Z

Canonical issue

Shared state for session timelines and A2A logs now lives in SQL instead of process-local JSON/in-memory storage, with Postgres URLs normalized onto psycopg and session writes guarded against lost updates.

Outcome

Session timeline events and A2A messages survive cross-instance access and share a single SQLite/Postgres-backed source of truth. Concurrent session metadata updates no longer clobber each other on stale writes.

Scope

Included:
- Shared SQL store — adds SharedSQLStateStore for sessions, timeline events, and A2A messages
- Timeline persistence — SessionOrchestrationManager reads/writes session state through shared SQL and imports legacy JSON session data once
- A2A persistence — AgentOrchestrator records and rehydrates A2A log entries from shared SQL when a shared DB is configured
- Postgres URL normalization — accepts postgres://, postgresql://, postgresql+asyncpg://, and postgresql+psycopg2://, normalizing to postgresql+psycopg://
- Lost-update protection — session row updates use a version-checked compare-and-swap retry loop
- Regression coverage — adds tests for cross-instance timeline persistence, cross-instance A2A persistence, and URL normalization
Explicitly excluded:
- Alembic-managed schema/migration plumbing for these shared-state tables
- Changes to Firestore-backed pipeline state
- Broader repository-wide persistence refactors outside session timeline/A2A state

Risk

Risk level: medium
Failure mode:
- Existing JSON session files remain readable, but new session timeline state moves to SQL; misconfigured shared DB URLs would fall back only where the caller does not provide a shared DB
- Orchestrator A2A persistence is only active when shared DB configuration is present
Rollback:
- Revert SharedSQLStateStore integration in the session orchestration manager and agent orchestrator; legacy JSON bootstrap path remains available in the manager

Verification

List exact automated and manual checks, tied to the current head SHA.

Focused tests — 1aac5e8: PYTHONPATH=src python3 -m pytest --no-cov tests/unit/test_session_orchestration.py tests/unit/test_agent_orchestrator.py tests/unit/test_antigravity_backend.py tests/unit/test_antigravity_orchestration.py -q
Required CI
Review threads resolved

Production evidence

Not applicable. This change is backend/shared-state persistence work; no production deployment or Vercel-specific runtime evidence was required to validate the behavior.

Agent handoff

One canonical issue is linked
No competing PR implements the same issue
Acceptance criteria are satisfied
Required checks pass on the current head
Human decision is requested only for product, security, irreversible infrastructure, or production approval

def save_session(self, session: dict[str, Any]) -> dict[str, Any]:
    current = conn.execute(
        select(self.sessions.c.payload, self.sessions.c.version)
        .where(self.sessions.c.session_id == session_id)
    ).mappings().first()

    result = conn.execute(
        update(self.sessions)
        .where(
            self.sessions.c.session_id == session_id,
            self.sessions.c.version == current["version"],
        )
        .values(version=current["version"] + 1, payload=serialized_payload)
    )

Fixes Persist timeline and A2A state in shared SQL storage #1509

vercel · 2026-09-08T22:52:00Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
v0-uvai	Ready	Preview, v0	Sep 8, 2026 11:33pm UTC

Co-authored-by: groupthinking <154503486+groupthinking@users.noreply.github.com>

vercel · 2026-09-08T23:45:13Z

+                    try:
+                        conn.execute(
+                            insert(self.sessions).values(
+                                session_id=session_id,


save_session performs a full-snapshot merge and an ineffective version check, so concurrent read-modify-write callers silently lose committed updates.

github-actions · 2026-09-09T18:40:20Z

🔍 PR Validation

⚠️ PR title should follow conventional commits format
⚠️ Large PR detected (562 lines changed)

github-actions · 2026-09-09T18:40:28Z

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Snapshot Warnings

⚠️: No snapshots were found for the head SHA 1aac5e8.

Ensure that dependencies are being submitted on PR branches and consider enabling retry-on-snapshot-warnings. See the documentation for more information and troubleshooting advice.

Scanned Files

None

groupthinking

@copilot Make sure no super seeded issue

Copilot

🟡 Changes recommended

The CAS still permits stale metadata clobbering, and several persistence paths have concurrency and operational reliability gaps.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Adds shared SQL persistence for session timelines and A2A messages.

Changes:

Introduces SQLite/PostgreSQL shared-state storage and URL normalization.
Integrates persistence into session and agent orchestration.
Adds cross-instance regression tests.

File summaries

File	Description
`src/youtube_extension/services/shared_sql_state.py`	Implements shared SQL storage.
`src/youtube_extension/services/agents/adapters/agent_orchestrator.py`	Persists and retrieves A2A logs.
`scripts/maintenance/session_orchestration_manager.py`	Moves session timelines to SQL.
`tests/unit/test_agent_orchestrator.py`	Tests A2A persistence and URL normalization.
`tests/unit/test_session_orchestration.py`	Tests cross-instance timeline updates.

Review details

Files reviewed: 5/5 changed files
Comments generated: 8
Review effort level: Balanced

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+                merged = self._deserialize(current["payload"])
+                merged.update(payload)


+        self._shared_state.save_session(session)
+        self._shared_state.append_timeline_event(session_id, initial_event)


+        session = self._shared_state.get_session(session_id)
        if not session or session.get("status") != "running":
            logger.error(f"Session {session_id} is not active.")
            return False


+        if shared_database_url:
+            try:
+                self._shared_state = SharedSQLStateStore(
+                    database_url=shared_database_url
+                )
+            except Exception as exc:
+                self.logger.warning("Shared A2A SQL state unavailable: %s", exc)
+                self._shared_state = None
+        else:
+            self._shared_state = None


            "strategic_analysis": ["personality_agent", "strategy_agent"],
            "chat_assistance": ["transcript_action"],
        }
+        self._hydrate_a2a_log()


+            if self.get_session(session["id"]) is not None:
+                continue
+            self.save_session(session)
+            for event in session.get("timeline", []):
+                self.append_timeline_event(session["id"], event)


+        for payload in rows:
+            session = self._deserialize(payload)
+            session["timeline"] = self.list_timeline(session["id"])
+            sessions[session["id"]] = session


+    assert manager_one.send_message(session["id"], "first update") is True
+    assert manager_two.send_message(session["id"], "second update") is True


Copilot · 2026-09-09T18:46:32Z

@copilot Make sure no super seeded issue

Checked: issue #1509 is the only canonical issue tied to this PR, and PR #1778 is the only open PR linked to it. I didn’t find any competing or superseded implementation PR for the same issue.

github-actions · 2026-09-09T19:07:16Z

Pull request created: #1840

Generated by pr-iteration-loop · copilot · auto · 98.5 AIC · ⌖ 20.8 AIC · ⊞ 12.1K

Initial plan

e718f2d

Copilot AI assigned Copilot and groupthinking Sep 8, 2026

vercel Bot deployed to Preview September 8, 2026 22:53 View deployment

Copilot started work on behalf of groupthinking September 8, 2026 23:25 View session

Copilot AI linked an issue Sep 8, 2026 that may be closed by this pull request

Persist timeline and A2A state in shared SQL storage #1509

Open

Copilot AI and others added 2 commits September 8, 2026 23:31

feat: add shared SQL state store

46e5c2b

Co-authored-by: groupthinking <154503486+groupthinking@users.noreply.github.com>

fix: persist timeline and A2A state in SQL

1aac5e8

Co-authored-by: groupthinking <154503486+groupthinking@users.noreply.github.com>

vercel Bot deployed to Preview September 8, 2026 23:33 View deployment

Copilot AI changed the title ~~[WIP] Persist timeline and A2A state in shared SQL storage~~ Persist timeline and A2A state in shared SQL storage Sep 8, 2026

Copilot finished work on behalf of groupthinking September 8, 2026 23:35

Copilot AI requested a review from groupthinking September 8, 2026 23:35

vercel Bot reviewed Sep 8, 2026

View reviewed changes

groupthinking requested a balanced review from Copilot and removed request for groupthinking September 9, 2026 18:40

groupthinking marked this pull request as ready for review September 9, 2026 18:40

groupthinking self-requested a review as a code owner September 9, 2026 18:40

github-actions Bot added the python label Sep 9, 2026

Copilot started reviewing on behalf of groupthinking September 9, 2026 18:40 View session

groupthinking requested changes Sep 9, 2026

View reviewed changes

Copilot AI reviewed Sep 9, 2026

View reviewed changes

Copilot started work on behalf of groupthinking September 9, 2026 18:45 View session

Copilot finished work on behalf of groupthinking September 9, 2026 18:46

Copilot AI requested a review from groupthinking September 9, 2026 18:46

This was referenced Sep 9, 2026

[ai] fix(ci): Branch Cleanup workflow fails on stale batch (unsupported script argument) #1839

Open

[ai] fix(ci): support stale batch in branch-cleanup-delete.sh #1840

Draft

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Persist timeline and A2A state in shared SQL storage - #1778

Persist timeline and A2A state in shared SQL storage#1778
groupthinking with Copilot wants to merge 3 commits into
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		merged = self._deserialize(current["payload"])
		merged.update(payload)

		self._shared_state.save_session(session)
		self._shared_state.append_timeline_event(session_id, initial_event)

		assert manager_one.send_message(session["id"], "first update") is True
		assert manager_two.send_message(session["id"], "second update") is True

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