Crate kernel 

flusso-kernel

The cross-cutting vocabulary for flusso — the validated types every other layer trades in.

Quick reference

Item	Role
common	Validated primitives — TableName, ColumnName, and the other identifier newtypes
config	The structures built from them — IndexSchema, Field, Join, Aggregate (and the Expression its sum/avg/min/max fold), Filter, IndexMapping
options	The neutral, ordered value tree a port entry carries to its adapter — Options, OptionValue
adapter	What an adapter declares about its configuration — AdapterConfig, AdapterDescription, Port, override_var
traits	The conversion the config crate implements — ParseFrom (text into entities)

This is the kernel: every other crate produces or consumes these types. They’re the canonical, already-validated shape of a search document and its building blocks, carrying no trace of the file format they were parsed from and naming no adapter.

ℹ️ Info — the assembled deployment config (Config/Index/the port entries) is a composition concern and lives a layer up in the config crate; each adapter’s own settings live in that adapter. Keeping both out of here lets the adapters depend on the vocabulary without reaching the top-level config, and lets the config layer carry an adapter’s options without knowing their shape.

Identifier types are built with nutype: they’re constructed only through try_new, so an invalid name never reaches the model.

Re-exports

pub use adapter::*;

pub use common::*;

pub use config::*;

pub use envelope::*;

pub use options::*;

pub use port_entry::*;

pub use traits::*;

Modules

adapter

What an adapter declares about itself: which port it implements, its kind string, and the shape of its options.

common

config

envelope

What flows through the stream: the position in the source’s change feed and the envelope a lane carries for one document.

options

The neutral, ordered value tree a port entry carries between the config layer and the adapter that understands it.

port_entry

One configured port: which adapter (type) and its options.

traits