Run query windows concurrently - #97
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📝 WalkthroughWalkthroughThe change adds session-scoped query execution. The sidecar manages persistent per-session connections, concurrent queries, session cleanup, and synchronized cancellation. The protocol, Tauri bridge, frontend store, tests, and smoke script now pass and validate session identifiers. ChangesQuery session lifecycle
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🟡 Moderate · up to Retargeting an active query tab can block new execution or display results from its previous connection, and immediate retries after fatal SQL errors can fail spuriously. These issues should be fixed before merge. Sequence Diagram(s)sequenceDiagram
participant QueryTab
participant QueryApi
participant Tauri
participant Sidecar
participant QuerySessionManager
QueryTab->>QueryApi: execute with tab ID as sessionId
QueryApi->>Tauri: invoke query_execute
Tauri->>Sidecar: send query.execute
Sidecar->>QuerySessionManager: acquire session connection
QuerySessionManager-->>Sidecar: return session lease
Sidecar-->>QueryTab: stream query results
QueryTab->>QueryApi: close session
QueryApi->>Tauri: invoke query_session_close
Tauri->>Sidecar: send query.sessionClose
Sidecar->>QuerySessionManager: close session
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 16.05% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 81 functions across 18 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches 💡 2📝 Generate docstrings 💡
🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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🟡 Changes recommended
The sidecar query dispatcher can leak an incomplete entry in activeQueryTasks if cancellation registration throws, which can hang shutdown and leave inconsistent state.
Once you've addressed the issues Copilot identified, you can request another Copilot review.
Pull request overview
This PR makes query execution concurrent by introducing a per-query-window SQL session (per tab) across the frontend → Tauri bridge → sidecar, ensuring long-running queries don’t block other query windows even when they share the same saved connection.
Changes:
- Frontend now sends a
sessionId(query window/tab id) withquery.execute, and closes server-side sessions on tab close / retarget. - Sidecar now manages one persistent SQL connection per
sessionId, enabling concurrent execution across sessions with isolated temp tables/state. - Updates JS dependencies (
browserslist,nanoid) to compatible patch versions to satisfy security audit.
File summaries
| File | Description |
|---|---|
| tests/frontend/queryUi.test.tsx | Adds coverage ensuring sessionId is passed and sessions are closed on tab lifecycle events. |
| src/features/query/store/queryStore.ts | Closes per-tab sessions on tab close/retarget; passes tab id as sessionId to execute. |
| src/features/query/api/queryApi.ts | Extends query API to include sessionId and adds query_session_close invocation. |
| src-tauri/src/lib.rs | Registers the new query_session_close command. |
| src-tauri/src/commands/query.rs | Bridges sessionId to sidecar requests and adds query.sessionClose support with tests. |
| sidecar/tests/Ssmsx.Protocol.Tests/JsonRpcTests.cs | Adds protocol contract tests for sessionId and session-close messages. |
| sidecar/tests/Ssmsx.Core.Tests/Query/QuerySessionManagerTests.cs | Adds unit tests for session reuse/isolation/close semantics. |
| sidecar/tests/Ssmsx.Core.Tests/Query/QueryExecutorTests.cs | Adds tests for session eviction decision logic. |
| sidecar/tests/Ssmsx.Core.Tests/Query/QueryCancellationManagerTests.cs | Adds concurrency/correctness tests for cancellation manager behavior. |
| sidecar/tests/Ssmsx.Core.Tests/Connections/ConnectionManagerTests.cs | Updates test factory signature and adds coverage for query-connection creation behavior. |
| sidecar/src/Ssmsx.Sidecar/Program.cs | Dispatches query.execute concurrently and wires in session close + connection-session cleanup. |
| sidecar/src/Ssmsx.Protocol/ProtocolJsonContext.cs | Registers new session-close message types for source-gen serialization. |
| sidecar/src/Ssmsx.Protocol/Messages/QueryMessages.cs | Adds sessionId to execute params and defines session-close request/response records. |
| sidecar/src/Ssmsx.Core/Query/QuerySessionManager.cs | New session manager owning a persistent SQL connection per query window/session. |
| sidecar/src/Ssmsx.Core/Query/QueryExecutor.cs | Executes using QuerySessionManager leases; evicts broken sessions on fatal/unusable errors. |
| sidecar/src/Ssmsx.Core/Query/QueryCancellationManager.cs | Tightens registration semantics and improves race-safe command cancellation handling. |
| sidecar/src/Ssmsx.Core/Connections/ConnectionManager.cs | Tracks active connection context and adds CreateQueryConnectionAsync for independent pooled query sessions. |
| scripts/smoke-sidecar.mjs | Extends smoke test to validate session state isolation and true concurrent execution order. |
| package.json | Bumps nanoid override patch version. |
| package-lock.json | Updates lockfile for dependency patch bumps (incl. browserslist ecosystem). |
| docs/SPEC.md | Updates protocol example to include sessionId and database context. |
Review details
- Files reviewed: 20/21 changed files
- Comments generated: 1
- Review effort level: Lite
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🔵 Needs a closer look
connection.connect now preemptively disconnects the existing connection before a replacement is successfully established, which can regress behavior by leaving no active connection if the connect attempt fails.
Review details
Suppressed comments (1)
Previously missed (1) — in code that hasn't changed since the last review.
sidecar/src/Ssmsx.Sidecar/Program.cs:307
connection.connectnow proactively disconnects the existing active connection before opening the replacement. IfConnectAsyncfails (bad credentials, network issue, cancellation), this leaves the user with no active connection even though a working one previously existed. ConnectionManager.ConnectAsync already supports safe replacement (dispose old only after new is ready), so this pre-disconnect is an avoidable regression.
Move the session cleanup to after a successful ConnectAsync and avoid disconnecting first.
- Files reviewed: 22/23 changed files
- Comments generated: 0 new
- Review effort level: Lite
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Done - successful reconnect now completes before prior query sessions are closed, so a failed or cancelled replacement retains the working active connection. Added coverage for failed replacement preservation. - Posted autonomously by 🤖 with permission... if you believe this is the incorrect response, please unresolve the comment and it will be flagged |
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Actionable comments posted: 2
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Inline comments:
In `@sidecar/src/Ssmsx.Core/Query/QuerySessionManager.cs`:
- Around line 172-174: Update ReleaseAsync to call
RemoveAndDisposeAsync(sessionId, session) before session.EndExecution() when
broken is true, ensuring the broken session is evicted and disposed before its
execution state is cleared.
In `@src/features/query/store/queryStore.ts`:
- Line 276: Update updateTab so when patch.connectionId changes, it removes
executionInfo[tabId] and clears results[tabId] after closing the old session and
before applying the new connection; add a test covering an executing tab
retargeted to another connection and verifying late events from the old session
cannot update it.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Team
Run ID: 418d0155-83af-4cc5-818d-346bfea0847a
⛔ Files ignored due to path filters (1)
package-lock.jsonis excluded by!**/package-lock.json
📒 Files selected for processing (20)
docs/SPEC.mdpackage.jsonscripts/smoke-sidecar.mjssidecar/src/Ssmsx.Core/Connections/ConnectionManager.cssidecar/src/Ssmsx.Core/Query/QueryCancellationManager.cssidecar/src/Ssmsx.Core/Query/QueryExecutor.cssidecar/src/Ssmsx.Core/Query/QuerySessionManager.cssidecar/src/Ssmsx.Protocol/Messages/QueryMessages.cssidecar/src/Ssmsx.Protocol/ProtocolJsonContext.cssidecar/src/Ssmsx.Sidecar/Program.cssidecar/tests/Ssmsx.Core.Tests/Connections/ConnectionManagerTests.cssidecar/tests/Ssmsx.Core.Tests/Query/QueryCancellationManagerTests.cssidecar/tests/Ssmsx.Core.Tests/Query/QueryExecutorTests.cssidecar/tests/Ssmsx.Core.Tests/Query/QuerySessionManagerTests.cssidecar/tests/Ssmsx.Protocol.Tests/JsonRpcTests.cssrc-tauri/src/commands/query.rssrc-tauri/src/lib.rssrc/features/query/api/queryApi.tssrc/features/query/store/queryStore.tstests/frontend/queryUi.test.tsx
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🔵 Needs a closer look
It makes cross-cutting concurrency and session-lifecycle changes spanning frontend, Rust bridge, and sidecar execution, which merits final human validation despite strong test coverage.
Review details
- Files reviewed: 22/23 changed files
- Comments generated: 0 new
- Review effort level: Lite
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🔵 Needs a closer look
The updated smoke test helper can mask immediate query start failures as timeouts because it doesn’t fail fast on error responses.
Review details
Suppressed comments (1)
Previously missed (1) — in code that hasn't changed since the last review.
scripts/smoke-sidecar.mjs:109
- waitForQueryStart() only resolves when the first response contains result.queryId, but it never fails fast if the request immediately returns an error. That can turn genuine query.start failures into confusing 5s timeouts and make the smoke test hang longer than needed.
- Files reviewed: 22/23 changed files
- Comments generated: 0 new
- Review effort level: Lite
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Done - the smoke harness retains completed response arrays long enough for - Posted autonomously by 🤖 with permission... if you believe this is the incorrect response, please unresolve the comment and it will be flagged |
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🔵 Needs a closer look
It introduces cross-layer concurrency and session-lifecycle changes spanning frontend, Tauri, and sidecar IPC, which warrants careful human validation despite strong test additions.
Review details
- Files reviewed: 22/23 changed files
- Comments generated: 0 new
- Review effort level: Lite
Summary
browserslistandnanoidto compatible patch releases so the current security audit passes.Test plan
npm run test:frontendnpm run buildnpm audit --audit-level=moderatedotnet build sidecar/Ssmsx.Sidecar.slnxnode scripts/test-sidecar-contract.mjsdotnet test sidecar/Ssmsx.Sidecar.slnx --filter "Category!=Integration"cargo fmt --manifest-path src-tauri/Cargo.toml --checkcargo clippy --manifest-path src-tauri/Cargo.toml --all-targets -- -D warningscargo test --manifest-path src-tauri/Cargo.tomlcargo check --manifest-path src-tauri/Cargo.tomlnpm run smoke:sidecaragainst the disposable demo SQL Server. The fast query completed before a concurrent three-second query using the same saved connection, and session state and cancellation stayed isolated by window.Summary by CodeRabbit
New Features
Bug Fixes