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DottaandPaperclip
8087661bb8
## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - Workspaces let users and agents inspect files that belong to an issue > - Changed-file views use full-tree Git status scans > - Many issue views could start those scans at the same time and make the server unresponsive > - Route-level limits did not protect the process or coalesce work for one repository > - This pull request adds one bounded scheduler for every expensive workspace Git scan > - It also starts browser scans only when the file panel is open and visible > - The benefit is bounded child-process use and responsive health checks during request storms ## Linked Issues or Issue Description **What happened?** Many changed-file requests could start full `git status --porcelain=v1 -z --untracked-files=all` scans at the same time. One production incident produced about 270 direct Git child processes. The Node process stayed alive but stopped answering health requests in time. **Expected behavior** Paperclip must bound expensive Git work across all companies, actors, issues, repositories, and browser tabs. Duplicate requests for one worktree must share work. Excess requests must fail fast with a retryable response. Hidden or closed file panels must not start scans. **Steps to reproduce** 1. Open changed-file views for many issue and actor keys. 2. Send requests for two large workspace roots at the same time. 3. Observe that route-level limiter keys allow many full Git scans to run together. 4. Observe delayed health responses and accumulated Git children. **Paperclip version or commit** Reproduced on master before commit `43ab441f0f`. **Deployment mode** Self-hosted server with local workspace repositories. ## What Changed - Add a process-wide scheduler with configurable concurrency, queue capacity, timeout, and cache TTL. - Add fair admission, a bounded queue, canonical worktree keys, single-flight joins, and bounded result caching. - Add subprocess timeouts, TERM-to-KILL escalation, bounded output, waiter cancellation, and slot cleanup. - Route full-tree status work from file resources, workspace runtime, execution workspaces, and adapter overlay sync through the scheduler. - Return stable retryable `503` and `504` error codes for saturation and timeout. - Add structured logs with safe workspace hashes, durations, queue state, cache use, joins, and terminal outcomes. - Gate UI queries on panel and document visibility. Cancel queries on close, hide, unmount, and workspace change. - Disable focus and reconnect bursts. Keep one explicit refresh action and a retryable unavailable state. - Document the 10-second default freshness tradeoff and all configuration variables. - Add unit, route, UI, adapter, and deterministic 500-request load coverage. ## Verification - `pnpm -r typecheck` - `pnpm build` - `pnpm check:token-gates` - `pnpm --filter @paperclipai/server exec vitest run src/services/workspace-git-operation-scheduler.test.ts src/__tests__/file-resources-git-scan-load.test.ts --reporter=dot` — 16 tests passed. - `pnpm --filter @paperclipai/ui exec vitest run src/components/WorkspaceFileBrowser.test.tsx src/lib/page-visibility.test.ts --reporter=dot` — 38 tests passed. - `pnpm --filter @paperclipai/adapter-utils exec vitest run src/git-workspace-sync.test.ts --reporter=dot` — 16 tests passed. - Existing file-resource, workspace-runtime, and execution-workspace regression selections passed. - Two cleanup safety regressions prove failed scans preserve the worktree before archive and at the final deletion fence. - Before: the incident produced about 270 Git children and health requests timed out. - After: 500 concurrent requests across 500 issue keys, 73 actors, and two roots started two underlying scans. Peak scan concurrency was 2. All 500 requests succeeded. Health p99 was 4.94 ms. The harness found zero unreaped children. - The full local Vitest run passed 4,267 tests. Ten existing fixed-port HTTPS exposure tests could not run because this host already owns Tailnet listeners on ports 42000 and 52000. Clean GitHub CI is the final full-suite result. - Latest-head GitHub CI passed all required test, typecheck, build, canary, e2e, policy, and security gates. - Greptile completed at 5/5 with zero unresolved comments, recommendations, or follow-ups. ## Risks - Changed-file results can be up to 10 seconds old by default. Explicit refresh remains available. - A full queue returns a retryable `503` instead of waiting without a bound. - A scan that exceeds the default 8-second deadline returns a retryable `504` and terminates its process group. - Operators can tune all limits with documented environment variables. Safe defaults protect local and shared servers. > For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and discuss it in `#dev` before opening the PR. Feature PRs that overlap with planned core work may need to be redirected — check the roadmap first. See `CONTRIBUTING.md`. ## Model Used - OpenAI Codex, GPT-5 family. The runtime does not expose the exact deployment ID or context-window size. High reasoning, tool use, and code execution were enabled. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes #` / `Refs #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>
@paperclipai/adapter-utils
Shared utilities for Paperclip adapters: process spawning, environment injection, sandbox/SSH transport, workspace sync, and the round-trip helpers that move code between the local execution-workspace cwd and wherever the agent actually runs.
For the adapter-author guide see
docs/adapters/creating-an-adapter.md
and the in-repo notes at packages/adapters/AUTHORING.md.
No-remote-git contract
The local execution-workspace cwd is the only persistence boundary across runs. No adapter may depend on a git remote for cross-run state.
Adapters that run the agent on a different host should use the SSH round-trip
helpers in src/ssh.ts:
prepareWorkspaceForSshExecution({ spec, localDir, remoteDir })— bundles the local cwd (tracked files, dirty edits, untracked additions, and the git history needed to reconstruct it) toremoteDirbefore the run starts. Runs with nogit remoteconfigured.restoreWorkspaceFromSshExecution({ spec, localDir, remoteDir, ... })— syncs the remote cwd back intolocalDirafter the run, including any new commits the agent created. Also runs with nogit remoteconfigured.
prepareRemoteManagedRuntime in
src/remote-managed-runtime.ts wraps both
calls for adapters that want a per-run remote workspace and an automatic
restoreWorkspace() finally hook.
The invariant is pinned by the no-remote-git contract case in
src/ssh-fixture.test.ts, which asserts that a
remote-only commit propagates to the local worktree through the
prepare → restore round-trip with no git remote configured at any point. Do
not regress that test.