Feature - Code execution Middle ware output streaming to UI - #81
Draft
saharannaveen wants to merge 6 commits into
Draft
Feature - Code execution Middle ware output streaming to UI#81saharannaveen wants to merge 6 commits into
saharannaveen wants to merge 6 commits into
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- InterruptBanner: parse structured tool_approval payloads, show subagent name and tool name in approval prompt - SubAgentIndicator: show "Tool Approval Required" with tool name and args when per-subagent tool_approval interrupt fires
Feat/rhitaif 221
- Add 'custom' to stream_mode for LangGraph Platform SSE - Handle code_output custom events in BFF proxy (skip all other custom events to prevent partial text state corruption) - Add code_output chunk type to SSEProcessor - Add onCodeOutput callback to StreamingManager - Wire console logging in useStreamingAPI for code execution output
Took deep-agent's InterruptBanner and SubAgentIndicator. Merged proxy.router.ts: kept code_output custom event handler, adopted uiChunks variable rename from deep-agent.
saharannaveen
marked this pull request as draft
July 20, 2026 13:53
Anish701
requested changes
Jul 22, 2026
| branches: | ||
| - main | ||
| - deep-agent | ||
| - feat/rhitaif-221 |
Contributor
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Why is this branch included in the yml?
| setTraceId(data.trace_id); | ||
| }, | ||
| onCodeOutput(content) { | ||
| console.log('[code_execution_output]', content); |
Contributor
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What is the purpose behind logging in console?
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Description
What does this MR do and why?
Adds SSE streaming support for real-time code execution output from the template-agent's CodeExecutionMiddleware. When the agent runs code in an ephemeral K8s pod, stdout chunks now stream through Aegra → BFF → UI in real-time instead of appearing all at once after completion.
Changes
code_output chunks to UI, skips all other custom events with continue to prevent partial text state corruption.
AI Disclosure
AI used: Yes |
Tool(s): None
Scope: BFF proxy handler, SSE processor, streaming manager, hook wiring |
Human verification: Tested with template-agent on Kind cluster — code output events visible in browser console during
execution.
Checklist
Deployment & Security Impact
Deployment: No new env vars. Adding 'custom' to stream_mode is backward-compatible — Aegra ignores unknown modes gracefully.
The BFF continue guard ensures unknown custom events are silently skipped.
Security: No auth changes. Code output content is the same stdout/stderr already visible in the ToolMessage — streaming just
makes it real-time.
Reviewer Notes
line 511 — not just code_output. That function maintains a prevPartial text accumulator for token streaming. A custom event
has a different JSON shape, would return [null, ''], and reset prevPartial to empty — causing duplicate or missing text in
the chat.