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Fix job scheduler race condition and enhance Blazor reconnection UI
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This commit is contained in:
Michał Zieliński
2025-12-08 22:45:31 +01:00
parent b917aa5077
commit 151ecaa98f
4 changed files with 64 additions and 5 deletions
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.claude/project-context.md
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@@ -5,6 +5,30 @@
## RECENT CHANGES (This Session)
**Job Scheduler Race Condition Fix (Dec 8, 2025):**
- ✅ **In-Memory Deduplication** - Added `HashSet<Guid>` to track LayerIds scheduled within the same batch
- ✅ **Prevents Duplicate Jobs** - Fixed race condition where same layer could be scheduled multiple times during single "Run All Jobs" operation
- ✅ **Two-Level Protection** - In-memory check (HashSet) runs before database check for O(1) performance
- ✅ **Applied to Both Methods** - Fixed both ScheduleImportJobsAsync and ScheduleProcessJobsAsync
- ✅ **Better Logging** - Added debug log message "Job already scheduled in this batch" for transparency
- Root cause: When multiple layers had same ID in query results or import plugins created new layers during scheduling loop, database check couldn't detect duplicates added in same batch before SaveChangesAsync()
- Solution: Track scheduled LayerIds in HashSet during loop iteration to prevent within-batch duplicates
- Files modified: [JobSchedulerService.cs](DiunaBI.Infrastructure/Services/JobSchedulerService.cs)
- Status: Race condition resolved, duplicate job creation prevented
---
**Blazor Server Reconnection UI Customization (Dec 8, 2025):**
- ✅ **Custom Reconnection Modal** - Replaced default Blazor "Rejoin failed..." dialog with custom-styled modal
- ✅ **Theme-Matched Styling** - Changed loader and button colors from blue to app's primary red (#e7163d) matching navbar
- ✅ **Timer with Elapsed Seconds** - Added real-time timer showing elapsed reconnection time (0s, 1s, 2s...)
- ✅ **CSS Classes Integration** - Used Blazor's built-in `.components-reconnect-show/failed/rejected` classes for state management
- ✅ **MutationObserver Timer** - JavaScript watches for CSS class changes to start/stop elapsed time counter
- ✅ **Professional Design** - Modal backdrop blur, spinner animation, red reload button with hover effects
- Files modified: [App.razor](DiunaBI.UI.Web/Components/App.razor), [app.css](DiunaBI.UI.Web/wwwroot/app.css)
- Files created: [reconnect.js](DiunaBI.UI.Web/wwwroot/js/reconnect.js)
- Status: Blazor reconnection UI now matches app theme with timer indicator
**Jobs List Sorting and Multi-Select Filtering (Dec 8, 2025):**
- ✅ **Fixed Job Sorting** - Changed from single CreatedAt DESC to Priority ASC → JobType → CreatedAt DESC
- ✅ **Multi-Select Status Filter** - Replaced single status dropdown with multi-select supporting multiple JobStatus values