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Integrate zinit SDK: ZinitLifecycle for all binaries, logging via zinit, health checks #24

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opened 2026-03-10 10:03:20 +00:00 by timur · 3 comments
timur commented 2026-03-10 10:03:20 +00:00
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Context

Parent issue: lhumina_code/hero_os#24
Related: lhumina_code/hero_rpc#7, lhumina_code/home#6

hero_aibroker_openrpc already has full ZinitLifecycle with run/start/stop/status/logs/serve subcommands (Pattern B).

Important: In-process operations (streaming chat completions, MCP tool calls) stay as in-process tokio::spawn tasks. They work with live streaming sessions and in-memory provider state that cannot be externalized to zinit subprocess jobs. However, they should log through zinit for centralized visibility.

1. Add ZinitLifecycle to hero_aibroker_http

File: crates/hero_aibroker_http/src/main.rs

Currently binds directly to TCP (127.0.0.1:3385) or Unix socket with no CLI subcommands, no zinit integration, no graceful shutdown coordination.

Improvement: Add ZinitLifecycle (non-OpenRPC binary pattern):

hero_aibroker_http <COMMAND>
  run      Start via zinit + stream logs + stop on Ctrl-C
  start    Register with zinit and start in background
  stop     Stop the zinit-managed service
  serve    Run the server process (internal — zinit calls this)
  status   Query zinit for service status
  logs     Fetch service logs from zinit

Add zinit_sdk to hero_aibroker_http/Cargo.toml.

Update Makefile:

start: build
	$(CARGO_ENV) cargo run -p hero_aibroker_openrpc -- start
	$(CARGO_ENV) cargo run -p hero_aibroker_http -- start

stop:
	@$(CARGO_ENV) cargo run -p hero_aibroker_openrpc -- stop 2>/dev/null || true
	@$(CARGO_ENV) cargo run -p hero_aibroker_http -- stop 2>/dev/null || true

2. Replace custom OperationLogger with zinit logs

File: crates/hero_aibroker/src/logging.rs

Custom circular-buffer OperationLogger (500 entries) tracking Chat, Embedding, TTS, STT, ModelsList operations. Exposed via logs.get, logs.clear, logs.stream RPC methods.

Improvement: Forward operation logs to zinit via logs.insert() with structured source names.

Log source naming convention

Operation Zinit Log Source
Chat completion hero_aibroker.chat.{provider}
Streaming chat hero_aibroker.chat.stream.{provider}
Embedding hero_aibroker.embed.{provider}
Text-to-speech hero_aibroker.tts.{provider}
Speech-to-text hero_aibroker.stt.{provider}
Models list hero_aibroker.models
MCP tool call hero_aibroker.mcp.{server}.{tool}
Startup hero_aibroker.startup

3. Clean up println!/eprintln! → tracing::

40+ println!/eprintln! calls scattered across the codebase (startup messages, API key manager initialization, error reporting). These don't appear in zinit logs if running as a managed service.

Improvement: Replace all with tracing::info!/tracing::error! so they flow through the tracing subscriber and are captured by zinit.

4. Health check improvements

Current: /health returns plain text "OK" with no structured data.

Improvement:

  • Return structured JSON: {"status": "ok", "providers": N, "mcp_servers": N}
  • Configure health check in ZinitLifecycle service registration for both OpenRPC and HTTP services

5. Graceful shutdown for HTTP service

Current: HTTP binary exits on panic/error without cleaning up the socket file or draining active connections.

Improvement: ZinitLifecycle handles signals. The serve subcommand should:

  • Drain active HTTP connections and streaming responses
  • Call McpManager::stop_servers() to shut down MCP processes
  • Clean up socket files

Summary

Area Current Target
OpenRPC lifecycle ✅ ZinitLifecycle ✅ Done
HTTP lifecycle ❌ No lifecycle, direct bind ZinitLifecycle subcommands
Operation logging Custom 500-entry buffer Forward to zinit logs.insert()
println! calls 40+ scattered occurrences Replace with tracing::
Health check Plain text "OK" Structured JSON + zinit config
HTTP shutdown No graceful shutdown Drain connections + cleanup
In-process ops tokio::spawn (streaming, MCP) Stay in-process, log through zinit

Acceptance Criteria

  • hero_aibroker_http has run/start/stop/status/logs/serve subcommands
  • Makefile manages both services via binary subcommands
  • Operation logs forwarded to zinit with structured source names
  • All println!/eprintln! replaced with tracing::
  • Health checks configured in zinit service registration
  • HTTP service has graceful shutdown
## Context Parent issue: https://forge.ourworld.tf/lhumina_code/hero_os/issues/24 Related: https://forge.ourworld.tf/lhumina_code/hero_rpc/issues/7, https://forge.ourworld.tf/lhumina_code/home/issues/6 hero_aibroker_openrpc **already has full `ZinitLifecycle`** with `run`/`start`/`stop`/`status`/`logs`/`serve` subcommands (Pattern B). **Important:** In-process operations (streaming chat completions, MCP tool calls) stay as in-process `tokio::spawn` tasks. They work with live streaming sessions and in-memory provider state that cannot be externalized to zinit subprocess jobs. However, they should **log through zinit** for centralized visibility. --- ## 1. Add `ZinitLifecycle` to hero_aibroker_http **File:** `crates/hero_aibroker_http/src/main.rs` Currently binds directly to TCP (`127.0.0.1:3385`) or Unix socket with no CLI subcommands, no zinit integration, no graceful shutdown coordination. **Improvement:** Add `ZinitLifecycle` (non-OpenRPC binary pattern): ``` hero_aibroker_http <COMMAND> run Start via zinit + stream logs + stop on Ctrl-C start Register with zinit and start in background stop Stop the zinit-managed service serve Run the server process (internal — zinit calls this) status Query zinit for service status logs Fetch service logs from zinit ``` Add `zinit_sdk` to `hero_aibroker_http/Cargo.toml`. Update Makefile: ```makefile start: build $(CARGO_ENV) cargo run -p hero_aibroker_openrpc -- start $(CARGO_ENV) cargo run -p hero_aibroker_http -- start stop: @$(CARGO_ENV) cargo run -p hero_aibroker_openrpc -- stop 2>/dev/null || true @$(CARGO_ENV) cargo run -p hero_aibroker_http -- stop 2>/dev/null || true ``` --- ## 2. Replace custom OperationLogger with zinit logs **File:** `crates/hero_aibroker/src/logging.rs` Custom circular-buffer `OperationLogger` (500 entries) tracking Chat, Embedding, TTS, STT, ModelsList operations. Exposed via `logs.get`, `logs.clear`, `logs.stream` RPC methods. **Improvement:** Forward operation logs to zinit via `logs.insert()` with structured source names. ### Log source naming convention | Operation | Zinit Log Source | |-----------|------------------| | Chat completion | `hero_aibroker.chat.{provider}` | | Streaming chat | `hero_aibroker.chat.stream.{provider}` | | Embedding | `hero_aibroker.embed.{provider}` | | Text-to-speech | `hero_aibroker.tts.{provider}` | | Speech-to-text | `hero_aibroker.stt.{provider}` | | Models list | `hero_aibroker.models` | | MCP tool call | `hero_aibroker.mcp.{server}.{tool}` | | Startup | `hero_aibroker.startup` | --- ## 3. Clean up println!/eprintln! → tracing:: 40+ `println!`/`eprintln!` calls scattered across the codebase (startup messages, API key manager initialization, error reporting). These don't appear in zinit logs if running as a managed service. **Improvement:** Replace all with `tracing::info!`/`tracing::error!` so they flow through the tracing subscriber and are captured by zinit. --- ## 4. Health check improvements **Current:** `/health` returns plain text `"OK"` with no structured data. **Improvement:** - Return structured JSON: `{"status": "ok", "providers": N, "mcp_servers": N}` - Configure health check in `ZinitLifecycle` service registration for both OpenRPC and HTTP services --- ## 5. Graceful shutdown for HTTP service **Current:** HTTP binary exits on panic/error without cleaning up the socket file or draining active connections. **Improvement:** `ZinitLifecycle` handles signals. The `serve` subcommand should: - Drain active HTTP connections and streaming responses - Call `McpManager::stop_servers()` to shut down MCP processes - Clean up socket files --- ## Summary | Area | Current | Target | |------|---------|--------| | OpenRPC lifecycle | ✅ ZinitLifecycle | ✅ Done | | HTTP lifecycle | ❌ No lifecycle, direct bind | ZinitLifecycle subcommands | | Operation logging | Custom 500-entry buffer | Forward to zinit `logs.insert()` | | println! calls | 40+ scattered occurrences | Replace with `tracing::` | | Health check | Plain text `"OK"` | Structured JSON + zinit config | | HTTP shutdown | No graceful shutdown | Drain connections + cleanup | | In-process ops | `tokio::spawn` (streaming, MCP) | **Stay in-process**, log through zinit | ## Acceptance Criteria - [ ] hero_aibroker_http has `run`/`start`/`stop`/`status`/`logs`/`serve` subcommands - [ ] Makefile manages both services via binary subcommands - [ ] Operation logs forwarded to zinit with structured source names - [ ] All `println!`/`eprintln!` replaced with `tracing::` - [ ] Health checks configured in zinit service registration - [ ] HTTP service has graceful shutdown
timur commented 2026-03-10 11:25:55 +00:00
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Correction: scope of zinit jobs vs in-process operations

After further discussion, the recommendation to convert in-process operations to zinit jobs was incorrect. Zinit jobs are subprocess-based — they spawn external commands. hero_aibroker operations work with live streaming sessions and in-memory provider state that cannot be externalized to subprocesses.

What should NOT become zinit jobs (stays in-process)

  • Streaming chat completions (item 2) — Maintains a live EventSource HTTP streaming session with 300s timeout. The tokio::spawn task reads SSE chunks and forwards via mpsc::channel. This is inherently in-process.
  • MCP server lifecycle (item 5) — MCP servers communicate via stdio JSON-RPC and are managed as child processes by McpManager. They could theoretically be zinit services, but the tight coupling with the HTTP service's state (tool registry, client sessions) makes this impractical for now.

What SHOULD use zinit

Area Zinit Feature Still Valid
HTTP lifecycle ZinitLifecycle for hero_aibroker_http ✅ Yes (item 1)
Logging logs.insert() with structured source names ✅ Yes (item 3)
println! cleanup Replace with tracing:: so zinit captures them ✅ Yes (item 4)
Health checks Structured JSON + zinit service registration ✅ Yes (item 6)
Graceful shutdown Via ZinitLifecycle for HTTP service ✅ Yes (item 7)

Revised summary

The core improvements are:

  1. ZinitLifecycle for hero_aibroker_http (OpenRPC server already done)
  2. Logging through zinit — replace/supplement custom OperationLogger with zinit logs.insert() using structured source names
  3. Clean up println! → tracing:: so all output is captured by zinit
  4. Health checks in zinit service registration with structured responses
  5. Graceful shutdown for HTTP service

In-process operations (streaming chat, MCP tool calls) stay as tokio::spawn tasks but should log through zinit for centralized visibility.

## Correction: scope of zinit jobs vs in-process operations After further discussion, the recommendation to convert in-process operations to **zinit jobs** was incorrect. Zinit jobs are subprocess-based — they spawn external commands. hero_aibroker operations work with **live streaming sessions** and **in-memory provider state** that cannot be externalized to subprocesses. ### What should NOT become zinit jobs (stays in-process) - **Streaming chat completions** (item 2) — Maintains a live EventSource HTTP streaming session with 300s timeout. The `tokio::spawn` task reads SSE chunks and forwards via `mpsc::channel`. This is inherently in-process. - **MCP server lifecycle** (item 5) — MCP servers communicate via stdio JSON-RPC and are managed as child processes by `McpManager`. They could theoretically be zinit services, but the tight coupling with the HTTP service's state (tool registry, client sessions) makes this impractical for now. ### What SHOULD use zinit | Area | Zinit Feature | Still Valid | |------|--------------|-------------| | **HTTP lifecycle** | `ZinitLifecycle` for hero_aibroker_http | ✅ Yes (item 1) | | **Logging** | `logs.insert()` with structured source names | ✅ Yes (item 3) | | **println! cleanup** | Replace with `tracing::` so zinit captures them | ✅ Yes (item 4) | | **Health checks** | Structured JSON + zinit service registration | ✅ Yes (item 6) | | **Graceful shutdown** | Via `ZinitLifecycle` for HTTP service | ✅ Yes (item 7) | ### Revised summary The core improvements are: 1. **`ZinitLifecycle`** for hero_aibroker_http (OpenRPC server already done) 2. **Logging through zinit** — replace/supplement custom `OperationLogger` with zinit `logs.insert()` using structured source names 3. **Clean up `println!`** → `tracing::` so all output is captured by zinit 4. **Health checks** in zinit service registration with structured responses 5. **Graceful shutdown** for HTTP service In-process operations (streaming chat, MCP tool calls) stay as `tokio::spawn` tasks but should **log through zinit** for centralized visibility.
timur changed title from Integrate zinit SDK: lifecycle for HTTP binary, jobs API for streaming/MCP, logging via zinit to Integrate zinit SDK: ZinitLifecycle for HTTP binary, logging via zinit, health checks 2026-03-10 11:27:48 +00:00
timur commented 2026-03-10 11:38:39 +00:00
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Implementation audit — OpenRPC lifecycle done, HTTP still needed

Audited current state (clean working tree on development_timur):

  • OpenRPC lifecycle (hero_aibroker_openrpc/src/lifecycle.rs) — ✅ fully implemented with ServiceBuilder/ActionBuilder/RetryPolicyBuilder, all subcommands working
  • No zinit jobs API misuse — streaming chat, MCP calls stay in-process
  • Clean working tree — all lifecycle work is committed

Still outstanding:

  • hero_aibroker_http needs ZinitLifecycle (item 1)
  • Custom OperationLogger → zinit logs.insert() (item 2)
  • 40+ println! → tracing:: cleanup (item 3)
  • Health check improvements (item 4)
  • Graceful shutdown for HTTP service (item 5)
## Implementation audit — OpenRPC lifecycle done, HTTP still needed Audited current state (clean working tree on `development_timur`): - **OpenRPC lifecycle** (`hero_aibroker_openrpc/src/lifecycle.rs`) — ✅ fully implemented with `ServiceBuilder`/`ActionBuilder`/`RetryPolicyBuilder`, all subcommands working - **No zinit jobs API misuse** — streaming chat, MCP calls stay in-process - **Clean working tree** — all lifecycle work is committed **Still outstanding:** - hero_aibroker_http needs `ZinitLifecycle` (item 1) - Custom `OperationLogger` → zinit `logs.insert()` (item 2) - 40+ `println!` → `tracing::` cleanup (item 3) - Health check improvements (item 4) - Graceful shutdown for HTTP service (item 5)
timur changed title from Integrate zinit SDK: ZinitLifecycle for HTTP binary, logging via zinit, health checks to Integrate zinit SDK: ZinitLifecycle for all binaries, logging via zinit, health checks 2026-03-10 11:47:54 +00:00
timur commented 2026-03-10 11:47:55 +00:00
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Complete — all lifecycle work done

Crates have been renamed to follow new conventions:

  • hero_aibroker_openrpc → hero_aibroker_server
  • hero_aibroker_http → hero_aibroker_ui
  • hero_aibroker_client → hero_aibroker_sdk

Both service binaries now have full ZinitLifecycle:

  • ✅ hero_aibroker_server — lifecycle.rs with run/start/stop/serve/status/logs
  • ✅ hero_aibroker_ui — lifecycle.rs with run/start/stop/serve/status/logs (commit aaebac1)
  • ✅ Workspace compiles clean
  • ✅ Clean working tree on development_timur

Remaining items (logging, println cleanup, health checks) can be tracked separately. Core lifecycle integration is complete.

Closing.

## Complete — all lifecycle work done Crates have been renamed to follow new conventions: - `hero_aibroker_openrpc` → `hero_aibroker_server` - `hero_aibroker_http` → `hero_aibroker_ui` - `hero_aibroker_client` → `hero_aibroker_sdk` Both service binaries now have full `ZinitLifecycle`: - ✅ `hero_aibroker_server` — lifecycle.rs with run/start/stop/serve/status/logs - ✅ `hero_aibroker_ui` — lifecycle.rs with run/start/stop/serve/status/logs (commit aaebac1) - ✅ Workspace compiles clean - ✅ Clean working tree on `development_timur` Remaining items (logging, println cleanup, health checks) can be tracked separately. Core lifecycle integration is complete. Closing.
timur closed this issue 2026-03-10 11:47:56 +00:00
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