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feat: TTY/PTY support for interactive processes (#58) #59

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timur wants to merge 1 commit from development_tty2 into development
pull from: development_tty2
merge into: geomind_code:development
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timur commented 2026-03-13 13:27:02 +00:00
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Summary

  • Add PTY allocation and registry so jobs with tty: true spawn with a pseudo-terminal
  • WebSocket endpoint at /api/jobs/{id}/pty bridges browser/CLI to the PTY master FD
  • xterm.js terminal in the web UI with a "Terminal" button on running TTY jobs
  • CLI zinit attach <job_id> command with raw mode and Ctrl+P,Ctrl+Q detach

Details

Clean reimplementation of issue #58 on the current job-based architecture (the old development_tty branch diverged too far to merge).

Phase 1 — PTY Infrastructure:

  • ActionSpec gains tty: bool (serde default, no DB migration needed)
  • PtyRegistry holds master FDs keyed by job_id, with resize (TIOCSWINSZ) support
  • Executor branches into run_job_piped() (original) vs run_job_with_pty() (openpty + setsid + TIOCSCTTY)
  • Registry cleared during graceful/force shutdown and cancel_all

Phase 2 — WebSocket endpoint:

  • GET /api/jobs/{id}/pty validates PTY exists, upgrades to WebSocket
  • Binary frames = raw terminal data, Text frames = JSON control ({"resize":{"cols":N,"rows":M}})
  • Uses AsyncFd + mpsc channel for non-blocking PTY reads

Phase 3 — UI integration:

  • xterm.js 5.3.0 + fit addon embedded as static assets
  • terminal.js module: openTerminal(jobId) / closeTerminal(jobId)
  • zinit_ui proxies WebSocket from browser to zinit_server over Unix socket

Phase 4 — CLI attach:

  • zinit attach <job_id> connects WebSocket over Unix socket
  • crossterm raw mode, stdin→WS binary, WS binary→stdout
  • Ctrl+P, Ctrl+Q detach sequence

Test plan

  • cargo build --workspace compiles (verified)
  • All 56 existing tests pass (verified)
  • Create job with tty: true, script: "/bin/bash" → process runs with PTY
  • zinit attach <job_id> enters interactive session
  • xterm.js terminal in UI connects and renders
  • Resize propagates correctly
  • Detach/close does not kill the process
  • Existing tty: false jobs work unchanged

🤖 Generated with Claude Code

## Summary - Add PTY allocation and registry so jobs with `tty: true` spawn with a pseudo-terminal - WebSocket endpoint at `/api/jobs/{id}/pty` bridges browser/CLI to the PTY master FD - xterm.js terminal in the web UI with a "Terminal" button on running TTY jobs - CLI `zinit attach <job_id>` command with raw mode and Ctrl+P,Ctrl+Q detach ## Details Clean reimplementation of issue #58 on the current job-based architecture (the old `development_tty` branch diverged too far to merge). **Phase 1 — PTY Infrastructure:** - `ActionSpec` gains `tty: bool` (serde default, no DB migration needed) - `PtyRegistry` holds master FDs keyed by job_id, with resize (TIOCSWINSZ) support - Executor branches into `run_job_piped()` (original) vs `run_job_with_pty()` (openpty + setsid + TIOCSCTTY) - Registry cleared during graceful/force shutdown and cancel_all **Phase 2 — WebSocket endpoint:** - `GET /api/jobs/{id}/pty` validates PTY exists, upgrades to WebSocket - Binary frames = raw terminal data, Text frames = JSON control (`{"resize":{"cols":N,"rows":M}}`) - Uses AsyncFd + mpsc channel for non-blocking PTY reads **Phase 3 — UI integration:** - xterm.js 5.3.0 + fit addon embedded as static assets - `terminal.js` module: `openTerminal(jobId)` / `closeTerminal(jobId)` - zinit_ui proxies WebSocket from browser to zinit_server over Unix socket **Phase 4 — CLI attach:** - `zinit attach <job_id>` connects WebSocket over Unix socket - crossterm raw mode, stdin→WS binary, WS binary→stdout - Ctrl+P, Ctrl+Q detach sequence ## Test plan - [ ] `cargo build --workspace` compiles (verified) - [ ] All 56 existing tests pass (verified) - [ ] Create job with `tty: true, script: "/bin/bash"` → process runs with PTY - [ ] `zinit attach <job_id>` enters interactive session - [ ] xterm.js terminal in UI connects and renders - [ ] Resize propagates correctly - [ ] Detach/close does not kill the process - [ ] Existing `tty: false` jobs work unchanged 🤖 Generated with [Claude Code](https://claude.com/claude-code)
feat: add TTY/PTY support for interactive processes (#58)
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d65a286464
 
Implement PTY allocation, WebSocket bridging, UI terminal, and CLI
attach so interactive processes (shells, TUI apps) can run under
zinit supervision and be attached to live.

Key changes:
- ActionSpec gains `tty: bool` field (serde default, no migration)
- PtyRegistry holds master FDs keyed by job ID with resize support
- Executor branches into piped vs PTY spawning paths
- WebSocket endpoint at /api/jobs/{id}/pty bridges PTY I/O
- zinit_ui proxies WebSocket and renders xterm.js terminal
- CLI `zinit attach <job_id>` with raw mode and Ctrl+P,Q detach

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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geomind_code/zinit_archive2!59
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