9626d15863
The runtime for shared topics:
- pubsub_repo: fan_out_publish gains `AND t.shared = FALSE` (a shared
trigger never fires on a per-app publish); new fan_out_shared_publish
matches `shared = true` pubsub triggers on the resolved owning group,
each delivery stamped with the writer app_id (M2 model).
- GroupPubsubService trait (shared) + GroupPubsubServiceImpl: resolve the
owning group (kind='topic') from cx.app_id's chain, require editor+
(GroupPubsubPublish, fails closed for anon), size-cap, fan out.
- SDK: `pubsub::shared_topic("name")` -> GroupTopicHandle with
`.publish(subtopic, msg)` / `.publish(msg)`; wired through Services +
the picloud binary (reuses the one PubsubRepo).
- authz: Capability::GroupPubsubPublish(GroupId), editor+ / script:write.
The owning-group chain walk is the isolation boundary; a sibling-subtree
app never resolves the topic.
Co-Authored-By: Claude Opus 4.8 (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.