4f044e7b81
Brings the MVP feature set online: upload a Rhai script, get an HTTP
endpoint that runs it sandboxed in-process, list/update/delete it, and
have invalid sources rejected at upload time. Verified live through
Caddy with a full lifecycle (`create → list → get → execute → update
→ delete`) plus error paths (syntax error, duplicate name, deleted).
Layout — every concern lands behind the trait seam its layer owns, so
cluster-mode in v1.3+ is a swap of two impls, not a rewrite:
* shared::ScriptValidator — manager calls into validation without
a hard dep on executor-core; executor-core impls the trait on
`Engine`. Pinned in shared so neither crate has to know about
the other.
* executor-core::Engine — real Rhai engine: sandbox limits (max
operations / string size / map size / call depth), disabled
`print`, blocked `import` (DummyModuleResolver), `log::trace
/info/warn/error` registered as a static module with shared
log-capture buffer (no `log::debug` because `debug` is a Rhai
reserved keyword — `log::trace` covers the same need).
- `ctx` is pushed as a Scope constant exposing
execution_id, script_id, script_name, request_id,
invocation_type, request.{path,headers,body}.
- Response convention: a Map with `statusCode` is the
structured shape (`{statusCode, headers?, body}`); any
other return value is a 200 with the value as the body.
- Engine::execute is now synchronous (pure compute); the
async wrapper + wall-clock timeout live in
LocalExecutorClient, which spawns_blocking and applies a
300s hard ceiling regardless of per-script config.
- 10 unit tests cover validate, exec, structured response,
ctx exposure, log capture, op-budget enforcement, runtime
errors, blocked imports, JSON round-tripping.
* manager-core::repo — full sqlx CRUD over the `scripts` table,
with proper unique-violation handling for duplicate names.
Embedded migrations via `sqlx::migrate!` (one initial
`0001_init.sql` for pgcrypto + scripts + execution_logs).
* manager-core::api — `admin_router` mounts `/scripts` and
`/scripts/{id}`. Create + Update validate source through the
injected `ScriptValidator` before persistence. Returns proper
422/409/404 status codes via `ApiError::IntoResponse`.
* orchestrator-core::api — `data_plane_router` mounts
`/execute/{id}`: resolves the script through `ScriptResolver`,
constructs the `ExecRequest` from headers+body, awaits
`ExecutorClient::execute(..., timeout)`, translates the
`ExecResponse` to an axum `Response` with header passthrough.
Maps `ExecError` variants to 422/504/502/507.
* picloud all-in-one — opens the pool, runs migrations, builds
one engine, nests both routers under `/api/admin` and `/api`,
enables structured JSON tracing and graceful shutdown on
SIGTERM. Single `PostgresScriptRepository` Arc is shared by
the admin router (writes) and the resolver (reads).
Other changes:
* Workspace axum bump 0.7 → 0.8 for the `{id}` path syntax
matching the route definitions.
* Workspace clippy: allow `needless_pass_by_value` and
`boxed_local` to keep API ergonomics over pedantic noise.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
PiCloud
A lightweight, self-hosted, event-driven serverless compute platform. Upload a Rhai script, get an HTTP endpoint. Designed to run on a single modest server with no idle CPU cost, and to scale out to a small cluster when you need it.
Status: Phase 1 — MVP scaffolding in progress.
The authoritative design lives in
serverless_cloud_blueprint.md.
Why
Existing serverless platforms are either cloud-locked, heavyweight, or both. PiCloud aims for the opposite end of the spectrum: one binary, one database, one reverse proxy — running on hardware you already own.
Architecture (one paragraph)
PiCloud splits into three logical services — manager (control plane: scripts, schedules, dashboard), orchestrator (per-node event ingress and dispatch), and executor (per-node Rhai sandbox) — each backed by a *-core Rust library. In MVP they run in a single process; in cluster mode they run as three binaries with one manager and one orchestrator + executor per node. Caddy fronts everything; PostgreSQL is the single source of truth.
See CLAUDE.md for working notes and serverless_cloud_blueprint.md for the full design.
Quick Start
Coming as scaffolding lands. For now:
# Rust toolchain (pinned via rust-toolchain.toml)
cargo check --workspace
# Run the all-in-one MVP binary (once main.rs is wired up)
cargo run -p picloud
Repository Layout
crates/
shared/ cross-cutting types
executor-core/ Rhai engine + sandbox
orchestrator-core/ event ingress, dispatch
manager-core/ control plane
picloud/ MVP all-in-one binary
picloud-{manager,orchestrator,executor}/ cluster-mode binaries (skeleton)
dashboard/ SvelteKit
caddy/ Caddyfile
docker/ Dockerfiles
docs/
git-workflow.md Trunk-based workflow
Contributing
See docs/git-workflow.md for the branching and commit conventions. TL;DR: trunk-based, short-lived branches, Conventional Commits, no force-pushing main.
License
TBD.