mirror of
https://github.com/paperclipai/paperclip.git
synced 2026-11-12 14:19:00 +01:00
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - Cloud deployments keep run logs, traces, attachments, artifacts and
saved workspace files in S3-compatible object storage
> - The restart chaos harness ran only with local disk storage, so
storage failures and slowdowns were never tested
> - It also clicked Retry through the API, so a missing or broken Retry
button in the board UI went unnoticed (staging PAP-1683: "the
saved-files recovery Retry does nothing")
> - This pull request runs waves against a loopback MinIO behind a fault
proxy, adds store-outage, latency and throttling faults, and clicks
every Retry in the real board UI
> - The benefit is that storage outages and broken Retry paths now
surface in chaos waves. The first ST1 wave found that a run starting
during a store outage fails immediately and exhausts recovery
## Linked Issues or Issue Description
**What happened?**
Staging saves to object storage and has failures there that local chaos
waves cannot reproduce, because the harness used `local_disk`. The
harness also clicked Retry through the API, which skips the board's
actual button.
**Expected behavior**
Chaos waves can run the server in cloud storage mode, inject storage
faults, and press Retry the way a user does.
**Actual behavior**
They could not.
## What Changed
- `--storage s3`:
- starts a loopback MinIO (`RELEASE.2025-04-22T22-12-26Z`, from
`~/.cache/paperclip/tools/minio/minio` or `RESTART_CHAOS_MINIO_BIN`)
with its data under the instance temp root and random root credentials;
- creates the bucket;
- puts a fault proxy in front;
- points the server's `PAPERCLIP_STORAGE_*` settings at the proxy, with
path-style addressing and a per-wave prefix. The supervisor declares
these as explicit workspace storage for the isolation check.
- `storage-proxy.ts`: a transparent, non-retrying S3 fault proxy that
keeps the signed Host header. Rules match by method, path and remaining
count. Faults are outage (503 `ServiceUnavailable`), latency with
jitter, a 5xx or `SlowDown` error rate, connection reset, and 403
`ExpiredToken`. It counts requests by method and status, written to
`storage-proxy.json`.
- `--storage-faults ST1,ST2,ST3` (`storage-chaos.ts`): seeded 60–180 s
windows of outage, 1–10 s latency, or 30% 503 / `SlowDown`, applied
while the wave runs. They're logged in the timeline and in
`storage-faults.json`.
- `board-ui.ts`: every task and subtask Retry the grader needs is now
clicked in the board UI. The harness uses headless Chromium through
Playwright, opens `/issues/<identifier>`, waits for the visible Retry
button and captures the `POST /issues/:id/retry` the click sends.
- R3 fails a missing button as `ui_retry_button_missing (user saw: …)`
and a click that sends nothing as `ui_retry_no_request`.
- Crash-point waves, which serve no UI, keep the API path.
- README: a cloud storage section.
## Verification
- `npx vitest run --config tests/restart-chaos/vitest.config.ts`: 244
passed. New tests:
- the proxy against a fake upstream: passthrough, bounded outage,
`SlowDown`, `ExpiredToken`, latency and reset;
- live MinIO through the proxy: `If-None-Match` returns 412, and an
injected 503 reaches the client;
- Playwright against local pages: a working button, a missing button,
and a dead button;
- the observer clicking through the board, and R3 signatures for UI
failures;
- window planning, apply and clear;
- `--storage` and `--storage-faults` parsing.
The observer and grader tests failed before the change.
- `node scripts/typecheck-test-projects.mjs tests/restart-chaos`: clean.
- Live waves on master 610b54f551 with this branch:
- Baseline `--storage s3`, A1/C1, K1/K2 (w-20261109T144738-s9901): 5/8.
There were 2,319 S3 requests through the proxy and 18 conditional-write
412 fences. All 3 Retries were clicked in the board UI, returned 202
Accepted, and the new run succeeded. The 3 failures are a Claude session
issue (#20285), not storage.
- ST1 (w-20261109T145628-s9902): 1/8. A run that starts during a store
outage fails within about 1 s as `adapter_failed`, automatic recovery
exhausts within the outage, and UI Retries are accepted but do not
recover. This has been reported for a product fix.
## Risks
- `--storage s3` needs a locally built MinIO. MinIO no longer publishes
community binaries. Without the binary the wave fails at start with the
path to provide, and the live store test is skipped.
- The UI Retry needs the dev UI to load. A slow first Vite compile can
delay the click, up to the 60 s wait.
## Model Used
- Claude Opus 5.5 (`claude-opus-5-5`), Anthropic, with tool use and code
execution in Claude Code.
## 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
- [ ] All Paperclip CI gates are green
- [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>