Zu sandbox backends and event sinks: local-docker, sqlite
Project description
zu-backends
Infrastructure adapters: the SandboxBackend port (provision and run a
tier's environment) and the EventSink port (persist and query the event
log). These are the durable/isolation seams the core defers behind a port.
Registered plugins
Sandbox backends (zu.backends)
| Name | Class | Notes |
|---|---|---|
local-docker |
LocalDockerBackend |
Runs a tier's container via the local Docker daemon. Network is disabled by default and enabled only for the render tier; scoped egress (allowlist / DNS-pinned) is the deferred egress-policy work. Needs the [docker] extra. |
Event sinks (zu.sinks)
| Name | Class | Notes |
|---|---|---|
sqlite |
SqliteSink |
The durable canonical store: WAL, synchronous=FULL, busy_timeout, single writer, keyset streaming, idempotent append. |
jsonl |
JsonlSink |
One JSON object per line — a greppable secondary/trace sink that log shippers tail. |
The payload codec seam (zu_core.codec) lets a sink encrypt payloads at rest;
an AES-256-GCM codec ships behind the optional [encryption] extra
(zu_backends.encryption).
Extend
Implement the SandboxBackend or EventSink shape, register under
zu.backends / zu.sinks, and add a deterministic test (inject a fake Docker
client / use a temp DB path — no real daemon needed offline).
Tests
uv run pytest packages/zu-backends — offline.
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