canic-core

Core orchestration logic for Canic canisters: config handling, ops layer, registries, and IC interface helpers.

Most canister projects should depend on canic (the facade crate) and use:

• canic::build! / canic::build_root! from build.rs to validate/embed canic.toml
• canic::start! / canic::start_root! from lib.rs to wire init/upgrade and export endpoints

canic-core is still published because it holds the underlying building blocks: typed config, auth/policy helpers, stable-memory backed registries, and the ops/ workflows.

See ../../README.md for the workspace overview and ../../CONFIG.md for the canic.toml schema.

Architecture

Canic is intentionally layered to keep your boundary surface small and your policies centralized:

• access/ – authorization and guard helpers used by endpoint macros.
• config/ – parse + validate canic.toml into a typed schema.
• model/ – stable storage (model::memory) and in-process registries/caches (non-memory).
• ops/ – business logic over model + IC management calls (provisioning, pools, topology sync).
• macros/ – macro entrypoints and generated endpoint bundles.

The default flow is: endpoints → ops → model.

Module Map

• canic_core::access::{auth, guard, policy} – common auth and routing checks.
• canic_core::config – config loader/schema and validation errors.
• canic_core::dto – candid-friendly DTOs for paging and exports.
• canic_core::env – curated canister ID constants and helpers.
• canic_core::ids – typed identifiers (CanisterRole, SubnetRole, etc.).
• canic_core::log / canic_core::perf – logging + perf instrumentation helpers.
• canic_core::ops – orchestration workflows (IC calls, sharding/scaling/reserve, WASM registry).
• canic_core::spec – representations of external IC standards/specs (ICRC, NNS/SNS, etc.).

Quick Start (Typical Canister)

In build.rs:

fn main() {
    canic::build!("../canic.toml");
}

In src/lib.rs:

use canic::prelude::*;
use canic::core::ids::CanisterRole;

const APP: CanisterRole = CanisterRole::new("app");

canic::start!(APP);

async fn canic_setup() {}
async fn canic_install(_: Option<Vec<u8>>) {}
async fn canic_upgrade() {}