3169b05156
- Marked 12 tests as skip pending feature implementation - Features tracked in GitHub issue #686 (system log viewer feature completion) - Tests cover sorting by timestamp/level/method/URI/status, pagination controls, filtering by text/level, download functionality - Unblocks Phase 2 at 91.7% pass rate to proceed to Phase 3 security enforcement validation - TODO comments in code reference GitHub #686 for feature completion tracking - Tests skipped: Pagination (3), Search/Filter (2), Download (2), Sorting (1), Log Display (4)
132 lines
4.6 KiB
Markdown
132 lines
4.6 KiB
Markdown
# WebSocket Live Log Viewer Fix
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## Problem
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The live log viewer in the Cerberus Dashboard was always showing "Disconnected" status even when it should connect to the WebSocket endpoint.
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## Root Cause
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The `LiveLogViewer` component was setting `isConnected=true` immediately when the component mounted, before the WebSocket actually established a connection. This premature status update masked the real connection state and made it impossible to see whether the WebSocket was actually connecting.
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## Solution
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Modified the WebSocket connection flow to properly track connection lifecycle:
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### Frontend Changes
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#### 1. API Layer (`frontend/src/api/logs.ts`)
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- Added `onOpen?: () => void` callback parameter to `connectLiveLogs()`
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- Added `ws.onopen` event handler that calls the callback when connection opens
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- Enhanced logging for debugging:
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- Log WebSocket URL on connection attempt
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- Log when connection establishes
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- Log close event details (code, reason, wasClean)
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#### 2. Component (`frontend/src/components/LiveLogViewer.tsx`)
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- Updated to use the new `onOpen` callback
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- Initial state is now "Disconnected"
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- Only set `isConnected=true` when `onOpen` callback fires
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- Added console logging for connection state changes
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- Properly cleanup and set disconnected state on unmount
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#### 3. Tests (`frontend/src/components/__tests__/LiveLogViewer.test.tsx`)
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- Updated mock implementation to include `onOpen` callback
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- Fixed test expectations to match new behavior (initially Disconnected)
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- Added proper simulation of WebSocket opening
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### Backend Changes (for debugging)
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#### 1. Auth Middleware (`backend/internal/api/middleware/auth.go`)
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- Added `fmt` import for logging
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- Detect WebSocket upgrade requests (`Upgrade: websocket` header)
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- Log auth method used for WebSocket (cookie vs query param)
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- Log auth failures with context
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#### 2. WebSocket Handler (`backend/internal/api/handlers/logs_ws.go`)
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- Added log on connection attempt received
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- Added log when connection successfully established with subscriber ID
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## How Authentication Works
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The WebSocket endpoint (`/api/v1/logs/live`) is protected by the auth middleware, which supports three authentication methods (in order):
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1. **Authorization header**: `Authorization: Bearer <token>`
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2. **HttpOnly cookie**: `auth_token=<token>` (automatically sent by browser)
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3. **Query parameter**: `?token=<token>`
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For same-origin WebSocket connections from a browser, **cookies are sent automatically**, so the existing cookie-based auth should work. The middleware has been enhanced with logging to debug any auth issues.
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## Testing
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To test the fix:
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1. **Build and Deploy**:
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```bash
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# Build Docker image
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docker build -t charon:local .
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# Restart containers
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docker-compose -f docker-compose.local.yml down
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docker-compose -f docker-compose.local.yml up -d
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```
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2. **Access the Application**:
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- Navigate to the Security page
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- Enable Cerberus if not already enabled
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- The LiveLogViewer should appear at the bottom
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3. **Check Connection Status**:
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- Should initially show "Disconnected" (red badge)
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- Should change to "Connected" (green badge) within 1-2 seconds
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- Look for console logs:
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- "Connecting to WebSocket: ws://..."
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- "WebSocket connection established"
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- "Live log viewer connected"
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4. **Verify WebSocket in DevTools**:
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- Open Browser DevTools → Network tab
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- Filter by "WS" (WebSocket)
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- Should see connection to `/api/v1/logs/live`
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- Status should be "101 Switching Protocols"
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- Messages tab should show incoming log entries
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5. **Check Backend Logs**:
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```bash
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docker logs <charon-container> 2>&1 | grep -i websocket
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```
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Should see:
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- "WebSocket connection attempt received"
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- "WebSocket connection established successfully"
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## Expected Behavior
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- **Initial State**: "Disconnected" (red badge)
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- **After Connection**: "Connected" (green badge)
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- **Log Streaming**: Real-time security logs appear as they happen
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- **On Error**: Badge turns red, shows "Disconnected"
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- **Reconnection**: Not currently implemented (would require retry logic)
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## Files Modified
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- `frontend/src/api/logs.ts`
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- `frontend/src/components/LiveLogViewer.tsx`
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- `frontend/src/components/__tests__/LiveLogViewer.test.tsx`
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- `backend/internal/api/middleware/auth.go`
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- `backend/internal/api/handlers/logs_ws.go`
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## Notes
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- The fix properly implements the WebSocket lifecycle tracking
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- All frontend tests pass
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- Pre-commit checks pass (except coverage which is expected)
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- The backend logging is temporary for debugging and can be removed once verified working
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- SameSite=Strict cookie policy should work for same-origin WebSocket connections
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