# SSE Phase Events & Deliverables Download Enhancements
**Version**: 1.2.0
**Date**: 2025-11-19
**Status**: β
Complete
## π― Summary
Enhanced the Mimir orchestration engine with **granular SSE phase events** for real-time worker/QC execution visibility and **deliverables download** functionality in the VSCode extension.
---
## β¨ New Features
### 1. Enhanced SSE Phase Events
**Problem**: Users couldn't see which execution phase (worker vs QC) was running, and when QC failed, the gap analysis wasn't immediately visible.
**Solution**: Added fine-grained SSE events for each execution phase with detailed QC failure information.
#### New SSE Events
| Event | Phase | Description |
|-------|-------|-------------|
| `worker-start` | Worker | Worker agent begins task execution |
| `worker-complete` | Worker | Worker agent completes (before QC) |
| `qc-start` | QC | QC agent begins verification |
| `qc-complete` | QC | QC verification completes (pass/fail) |
#### QC Failure Gap Information
When QC fails, the `qc-complete` event now includes:
```typescript
{
gap: {
feedback: string; // Detailed QC feedback
issues: string[]; // List of identified issues
requiredFixes: string[]; // List of required fixes
}
}
```
**Example:**
```json
{
"taskId": "task-123",
"phase": "qc",
"passed": false,
"score": 35,
"message": "β QC failed (Score: 35/100) - Retrying (1/2)",
"gap": {
"feedback": "Translation incomplete. Only 60% of content translated.",
"issues": [
"Issue 1: README.md translation missing sections",
"Gap: Required full translation not delivered",
"Evidence: Only first 3 sections translated"
],
"requiredFixes": [
"Fix 1: Complete translation of remaining sections (4-7)",
"Fix 2: Verify terminology consistency across all sections"
]
}
}
```
#### VSCode Notifications
The extension now shows real-time toast notifications for:
- π€ **Worker Start**: "Worker executing: [Task Title]"
- β
**Worker Complete**: "Worker completed (15.0s, 3 tool calls)"
- π **QC Start**: "QC verifying: [Task Title]"
- β
**QC Passed**: "QC passed (Score: 95/100)"
- β οΈ **QC Failed**: "QC failed (Score: 35/100)" + Gap details
---
### 2. Deliverables Download in VSCode Extension
**Problem**: Users couldn't download files generated by workflow executions from the VSCode extension.
**Solution**: Added a "Download Deliverables" button that fetches and saves execution outputs.
#### Features
- **π₯ Download Button**: Shows count of available deliverables
- **Automatic Tracking**: Deliverables tracked from `execution-complete` SSE event
- **Save Dialog**: Prompts for save location (defaults to `deliverables/` folder)
- **Batch Download**: Downloads all deliverables in one action
- **Progress Feedback**: Shows success/failure count after download
- **Directory Creation**: Automatically creates subdirectories as needed
#### UI States
```
βββββββββββββββββββββββββββββββββββββββ
β π₯ Download Deliverables (0) β β Disabled (no deliverables)
β Grayed out, not clickable β
βββββββββββββββββββββββββββββββββββββββ
βββββββββββββββββββββββββββββββββββββββ
β π₯ Download Deliverables (3) β β Enabled (3 deliverables)
β Highlighted, clickable β
βββββββββββββββββββββββββββββββββββββββ
```
#### Example Flow
1. **Execute workflow** β Worker runs β QC verifies β Task completes
2. **Execution completes** β SSE sends deliverables list
3. **Button enables** β Shows `π₯ Download Deliverables (3)`
4. **User clicks** β Save dialog opens
5. **User selects location** β Files download
6. **Success notification** β `β
Downloaded 3 deliverables to /workspace/deliverables`
---
## π§ Implementation Details
### Backend Changes
#### `src/orchestrator/task-executor.ts`
Modified `executeTask` signature to accept SSE callback:
```typescript
export async function executeTask(
task: TaskDefinition,
preambleContent: string,
qcPreambleContent?: string,
executionId?: string, // π
sendSSE?: (event: string, data: any) => void // π
): Promise<ExecutionResult>
```
Added SSE events at key phases:
1. **Line ~1576**: `worker-start` event
2. **Line ~1638**: `worker-complete` event
3. **Line ~1769**: `qc-start` event
4. **Line ~1857**: `qc-complete` event (passed)
5. **Line ~1930**: `qc-complete` event (failed with gap)
#### `src/api/orchestration/workflow-executor.ts`
Updated both serial and parallel execution to pass `executionId` and `sendSSE` callback:
```typescript
const result = await executeTask(
task,
preambleContent,
qcPreambleContent,
executionId,
(event, data) => sendSSEEvent(executionId, event, data)
);
```
### Frontend Changes (VSCode Extension)
#### `vscode-extension/webview-src/studio/Studio.tsx`
**Added State:**
```typescript
const [deliverables, setDeliverables] = useState<Deliverable[]>([]);
const [lastExecutionId, setLastExecutionId] = useState<string | null>(null);
```
**Updated `executionComplete` handler:**
```typescript
case 'executionComplete':
setIsExecuting(false);
if (message.deliverables) {
setDeliverables(message.deliverables);
}
if (message.executionId) {
setLastExecutionId(message.executionId);
}
break;
```
**Added Download Button:**
```typescript
<button
onClick={handleDownloadDeliverables}
disabled={deliverables.length === 0}
title={deliverables.length > 0
? `Download ${deliverables.length} deliverable(s)`
: 'No deliverables available'}
>
π₯ Download Deliverables ({deliverables.length})
</button>
```
#### `vscode-extension/src/studioPanel.ts`
**Enhanced `execution-complete` SSE handler:**
```typescript
case 'execution-complete':
this._panel.webview.postMessage({
command: 'executionComplete',
success: data.status === 'completed',
executionId,
deliverables: data.deliverables || [] // π
});
break;
```
**Added Phase Event Handlers:**
```typescript
case 'worker-start':
vscode.window.showInformationMessage(data.message);
break;
case 'qc-complete':
if (data.passed) {
vscode.window.showInformationMessage(data.message);
} else {
const gapSummary = data.gap ?
`\n\nπ Issues:\n${data.gap.issues.join('\n')}\n\nπ§ Required fixes:\n${data.gap.requiredFixes.join('\n')}` : '';
vscode.window.showWarningMessage(data.message + gapSummary);
}
break;
```
**Added `_downloadDeliverables` method:**
```typescript
private async _downloadDeliverables(executionId: string, deliverables: any[]) {
// Prompts for save location
// Downloads each deliverable via API
// Saves to local filesystem
// Shows success/failure notification
}
```
---
## π Benefits
### For Users
1. **Real-time Visibility**: See exactly which phase is executing (worker vs QC)
2. **Retry Transparency**: Know which attempt the task is on
3. **QC Failure Details**: Immediate access to gap analysis without querying Neo4j
4. **Non-blocking Notifications**: Toast messages keep users informed without interrupting
5. **Easy Access to Outputs**: Download deliverables directly from VSCode
### For Debugging
1. **Granular Logging**: Each phase emits its own event
2. **Timing Information**: Duration and tool call counts for each phase
3. **Failure Analysis**: Gap information embedded in SSE events
4. **Execution Flow**: Clear sequence of events from start to finish
---
## π§ͺ Testing
### SSE Phase Events
1. **Worker Phase**:
- Start a workflow execution
- Verify `worker-start` notification appears
- Verify `worker-complete` notification appears with duration
2. **QC Phase**:
- Verify `qc-start` notification appears
- For passed QC: Verify `qc-complete` success notification
- For failed QC: Verify warning notification with gap details
3. **Retry Flow**:
- Cause a QC failure
- Verify retry message shows attempt number (e.g., "2/2")
- Verify gap information is displayed
### Deliverables Download
1. **Button States**:
- Before execution: Button disabled, shows (0)
- After execution with deliverables: Button enabled, shows count
2. **Download Flow**:
- Click download button
- Verify save dialog opens
- Select location
- Verify files are saved correctly
- Verify success notification shows count
3. **Error Handling**:
- Test with no deliverables: Verify warning message
- Test with API failure: Verify error notification
- Test with partial failures: Verify mixed result message
---
## π Related Documentation
- [Enhanced SSE Phase Events Guide](../guides/SSE_PHASE_EVENTS.md) - Comprehensive SSE event documentation
- [Workflow Management](../../vscode-extension/WORKFLOW_MANAGEMENT.md) - VSCode workflow features
- [Neo4j Graph Query Guide](../guides/NEO4J_QUERIES.md) - Querying execution data
---
## π What's Next
Potential future enhancements:
1. **Selective Download**: Choose which deliverables to download
2. **Automatic Save**: Option to auto-save deliverables to predefined location
3. **Deliverables Preview**: View file contents before downloading
4. **Download History**: Track past downloads
5. **Compression**: Download deliverables as a ZIP file
---
**Changelog maintained by**: Mimir Team
**Related Issues**: Enhanced user experience, real-time execution visibility, deliverables access