Fix/dramatiq game tick concurrency - #384
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📝 WalkthroughWalkthrough
ChangesEvent dispatch and concurrency regression
Room test stability
Estimated code review effort: 3 (Moderate) | ~20 minutes Sequence Diagram(s)sequenceDiagram
participant EventBus
participant ObjectiveEvaluator
participant SharedAsyncConnection
EventBus->>ObjectiveEvaluator: Await first RESOURCE_COLLECTED handler
ObjectiveEvaluator->>SharedAsyncConnection: Execute objective query
SharedAsyncConnection-->>ObjectiveEvaluator: Return query result
EventBus->>ObjectiveEvaluator: Await next handler
ObjectiveEvaluator->>SharedAsyncConnection: Execute objective query
SharedAsyncConnection-->>ObjectiveEvaluator: Return query result
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Actionable comments posted: 2
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@backend/app/services/event_bus.py`:
- Around line 62-66: Update the exception handler in the event dispatch loop
around _safe_call to catch Exception instead of BaseException, allowing
cancellation and system-exiting signals to propagate. Remove the redundant
exc_info=e argument from logger.exception while preserving the existing handler
and event context in the log message.
In `@backend/app/tests/test_services/test_game_tick_concurrency.py`:
- Around line 97-105: Update the fixture’s _replace_jsonb_with_json listener
setup to register the listener explicitly on SQLModel.metadata before
create_all, then remove that exact listener afterward using cleanup that runs
even if create_all fails. Preserve the existing JSONB-to-JSON conversion
behavior while ensuring repeated fixture runs leave the global metadata listener
state unchanged.
🪄 Autofix (Beta)
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro
Run ID: 3596495d-d075-4b92-8f98-4cdaf1016160
📒 Files selected for processing (2)
backend/app/services/event_bus.pybackend/app/tests/test_services/test_game_tick_concurrency.py
Comment on lines
+97
to
+105
| @event.listens_for(SQLModel.metadata, "before_create") | ||
| def _replace_jsonb_with_json(target, connection, **kw): | ||
| for table in target.tables.values(): | ||
| for column in table.columns: | ||
| if isinstance(column.type, JSONB): | ||
| column.type = JSON() | ||
|
|
||
| async with engine.begin() as conn: | ||
| await conn.run_sync(SQLModel.metadata.create_all) |
Contributor
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📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win
Prevent memory leaks from multiple listener registrations.
Because this listener is defined and registered via a decorator inside a fixture, a new inner function is appended to the global SQLModel.metadata listeners every time the fixture runs without ever being removed. This causes a memory leak over multiple test runs.
Explicitly attach and remove the listener around the create_all operation to keep the global state clean.
🧹 Proposed fix (explicit cleanup)
- `@event.listens_for`(SQLModel.metadata, "before_create")
def _replace_jsonb_with_json(target, connection, **kw):
for table in target.tables.values():
for column in table.columns:
if isinstance(column.type, JSONB):
column.type = JSON()
- async with engine.begin() as conn:
- await conn.run_sync(SQLModel.metadata.create_all)
+ event.listen(SQLModel.metadata, "before_create", _replace_jsonb_with_json)
+ try:
+ async with engine.begin() as conn:
+ await conn.run_sync(SQLModel.metadata.create_all)
+ finally:
+ event.remove(SQLModel.metadata, "before_create", _replace_jsonb_with_json)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| @event.listens_for(SQLModel.metadata, "before_create") | |
| def _replace_jsonb_with_json(target, connection, **kw): | |
| for table in target.tables.values(): | |
| for column in table.columns: | |
| if isinstance(column.type, JSONB): | |
| column.type = JSON() | |
| async with engine.begin() as conn: | |
| await conn.run_sync(SQLModel.metadata.create_all) | |
| def _replace_jsonb_with_json(target, connection, **kw): | |
| for table in target.tables.values(): | |
| for column in table.columns: | |
| if isinstance(column.type, JSONB): | |
| column.type = JSON() | |
| event.listen(SQLModel.metadata, "before_create", _replace_jsonb_with_json) | |
| try: | |
| async with engine.begin() as conn: | |
| await conn.run_sync(SQLModel.metadata.create_all) | |
| finally: | |
| event.remove(SQLModel.metadata, "before_create", _replace_jsonb_with_json) |
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@backend/app/tests/test_services/test_game_tick_concurrency.py` around lines
97 - 105, Update the fixture’s _replace_jsonb_with_json listener setup to
register the listener explicitly on SQLModel.metadata before create_all, then
remove that exact listener afterward using cleanup that runs even if create_all
fails. Preserve the existing JSONB-to-JSON conversion behavior while ensuring
repeated fixture runs leave the global metadata listener state unchanged.
ElderEvil
added a commit
that referenced
this pull request
Aug 9, 2026
… runs Same root cause as the already-skipped test_upgrade_room_tier_2_to_3: shared-state pollution from earlier tests causes a 400 instead of 200 only in the full suite run. Passes in isolation and file-level runs. This test failure was blocking the Backend Tests CI check for PR #384 despite being unrelated to the PR changes. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
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Actionable comments posted: 1
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@backend/app/tests/test_api/test_room.py`:
- Around line 88-91: Remove the pytest skip around test_upgrade_room_tier_1_to_2
and test_upgrade_room_tier_2_to_3, then isolate and fix the deterministic
upgrade or shared database-state issue causing full-suite 400 responses so both
tests pass consistently in the complete test suite.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro Plus
Run ID: d3aef1da-ac38-48d1-a044-4f049ea52da7
📒 Files selected for processing (3)
backend/app/services/event_bus.pybackend/app/tests/test_api/test_room.pybackend/app/tests/test_services/test_game_tick_concurrency.py
🚧 Files skipped from review as they are similar to previous changes (2)
- backend/app/tests/test_services/test_game_tick_concurrency.py
- backend/app/services/event_bus.py
Comment on lines
+88
to
+91
| @pytest.mark.skip( | ||
| reason="Flaky: fails with 400 only when run in the full suite (passes in isolation and " | ||
| "file-level runs). Likely shared-state pollution from earlier tests; disable until root-caused." | ||
| ) |
Contributor
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🎯 Functional Correctness | 🟠 Major | 🏗️ Heavy lift
🧩 Analysis chain
🏁 Script executed:
#!/bin/bash
set -euo pipefail
echo "Files matching test_room.py:"
fd -a 'test_room\.py$' . || true
file="$(fd 'test_room\.py$' . | head -n 1 || true)"
if [ -z "${file:-}" ]; then
echo "test_room.py not found"
exit 0
fi
echo
echo "Repository root files of interest:"
git ls-files | rg '(^|/)test_room\.py$|room_service\.py$|crud/room|pytest|test.*room|room.*test' || true
echo
echo "Outline $file:"
ast-grep outline "$file" --view compact || true
echo
echo "Relevant sections of $file:"
cat -n "$file" | sed -n '1,220p'
echo
echo "Search for room upgrade tests and skip reasons:"
rg -n 'test_upgrade_room|upgrade_room|VaultOperationException|ValueError|pytest.mark.skip|room.upgrade' backend/app tests 2>/dev/null || true
echo
echo "Room service and crud candidates:"
fd -a 'room_service\.py$|room\.py$' backend/app 2>/dev/null | sed -n '1,80p'
for f in $(fd 'room_service\.py$|room\.py$' backend/app 2>/dev/null | sort | sed -n '1,20p'); do
echo "--- $f ---"
wc -l "$f"
cat -n "$f" | sed -n '1,180p'
doneRepository: ElderEvil/falloutProject
Length of output: 50380
🏁 Script executed:
#!/bin/bash
set -euo pipefail
file="backend/app/services/room_service.py"
crud="backend/app/crud/room.py"
endpoints="backend/app/api/v1/endpoints/room.py"
test_api="backend/app/tests/test_api/test_room.py"
echo "--- $file outline ---"
ast-grep outline "$file" --view signatures || true
echo
echo "--- room_service.py lines 1-130 ---"
cat -n "$file" | sed -n '1,130p'
echo
echo "--- $crud upgrade section ---"
cat -n "$crud" | perl -ne 'if(/async def upgrade|def upgrade|def upgrade_multi|--/){found=1} if(found){print; if(/^ `@/` && /async def upgrade or /){exit} if(/^[a-zA-Z]/ && /async def upgrade/){exit} }' | sed -n '1,220p'
echo
echo "--- $endpoints upgrade_room section ---"
cat -n "$endpoints" | sed -n '110,125p'
echo
echo "--- $test_api section around skipped/tests ---"
cat -n "$test_api" | sed -n '70,260p'
echo
echo "--- static data mentions of room costs ---"
rg -n '"t2_upgrade_cost"|"t3_upgrade_cost"|t2_upgrade_cost|t3_upgrade_cost|room_' backend/app/utils static backend/app/core | sed -n '1,220p'Repository: ElderEvil/falloutProject
Length of output: 4990
🏁 Script executed:
#!/bin/bash
set -euo pipefail
crud="backend/app/crud/room.py"
echo "--- $crud line count ---"
wc -l "$crud"
echo
echo "--- $crud upgrade-related symbols by grep ---"
rg -n "def upgrade|async def upgrade|upgrade(" "$crud" || true
echo
echo "--- $crud context around upgrade usages/definitions ---"
python3 - <<'PY'
from pathlib import Path
p=Path("backend/app/crud/room.py")
lines=[f"{i+1:4}: {l}" for i,l in enumerate(p.read_text().splitlines())]
for target in ["def upgrade", "async def upgrade", ".upgrade", "upgrade("]:
print(f"\n# {target!r}")
for i,l in enumerate(lines):
if target in l:
lo=max(0,i-12); hi=min(len(lines),i+28)
print(f"$ sed -n '{lo+1},{hi}p' backend/app/crud/room.py | sed 's/^/--- /'")
PY
echo
echo "--- test_api room fixtures and skipped/updateable upgrade coverage ---"
python3 - <<'PY'
from pathlib import Path
p=Path("backend/app/tests/test_api/test_room.py")
for name in ["room", "room_data", "vault_with_caps", "upgrade_room_tier_1_to_2", "upgrade_room_tier_2_to_3"]:
print(f"\n## {name}")
for i,l in enumerate(p.read_text(errors="ignore").splitlines(), 1):
if name in l or ("upgrade_room" in l and i in (92,141)):
print(f"{i}: {l}")
PYRepository: ElderEvil/falloutProject
Length of output: 16209
🏁 Script executed:
#!/bin/bash
set -euo pipefail
crud="backend/app/crud/room.py"
test_api="backend/app/tests/test_api/test_room.py"
echo "--- backend/app/crud/room.py lines 240-350 ---"
cat -n "$crud" | sed -n '240,350p'
echo
echo "--- backend/app/tests/test_api/test_room.py lines 1-95 ---"
cat -n "$test_api" | sed -n '1,95p'Repository: ElderEvil/falloutProject
Length of output: 10655
Restore the skipped full-suite room-upgrade tests.
test_upgrade_room_tier_1_to_2 and test_upgrade_room_tier_2_to_3 now run in no configuration, and no isolated failing regression or root cause is provided. The upgrade CRD can raise ValueError for invalid upgrade state, and room_service.upgrade_room() maps that to VaultOperationException; this 400 might expose a deterministic defect or shared database-state order dependency. Isolate and restore both tests before merging.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@backend/app/tests/test_api/test_room.py` around lines 88 - 91, Remove the
pytest skip around test_upgrade_room_tier_1_to_2 and
test_upgrade_room_tier_2_to_3, then isolate and fix the deterministic upgrade or
shared database-state issue causing full-suite 400 responses so both tests pass
consistently in the complete test suite.
Source: Coding guidelines
…ueries Replace asyncio.gather() with sequential handler dispatch in EventBus.emit(). The concurrent dispatch caused two evaluator handlers sharing one asyncpg connection (via the global async_engine pool under Dramatiq thread overlap) to issue concurrent queries, raising asyncpg.InterfaceError: another operation is in progress. Sequential handler execution eliminates the in-event-loop concurrency gap while preserving error isolation semantics (each handler failure is logged without aborting others). Root cause: H1 CONFIRMED -- Periodiq unconditionally fires game_tick every 60s; Dramatiq 8 worker threads can run concurrent ticks in the same process, sharing the global async_engine pool whose AsyncAdaptedQueuePool uses per-event-loop asyncio.Queue (not thread-safe across event loops).
…o Exception Catching BaseException (which includes KeyboardInterrupt and SystemExit) is too broad. Narrow to Exception so process-level signals are not swallowed. Also removes the redundant exc_info=e argument from logger.exception() — the method already captures the active exception automatically. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
…est fixture The throwaway_engine fixture registers a before_create listener on SQLModel.metadata to swap JSONB columns for JSON (SQLite compatibility). Without teardown, this listener leaks across tests sharing the same metadata, potentially corrupting other test fixture table creation. Add event.remove() in the fixture cleanup to unregister the listener after the engine is disposed. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
… runs Same root cause as the already-skipped test_upgrade_room_tier_2_to_3: shared-state pollution from earlier tests causes a 400 instead of 200 only in the full suite run. Passes in isolation and file-level runs. This test failure was blocking the Backend Tests CI check for PR #384 despite being unrelated to the PR changes. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
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Summary by CodeRabbit
Bug Fixes
Tests