canic-core 0.35.3

Canic — a canister orchestration and management toolkit for the Internet Computer
Documentation 
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use crate::{
    InternalError,
    config::schema::CanisterKind,
    domain::policy,
    ops::{config::ConfigOps, storage::registry::subnet::SubnetRegistryOps},
    workflow::prelude::*,
};

// Validate create-time registry policy using targeted registry lookups instead of a full export.
pub(super) fn validate_registration_policy(
    role: &CanisterRole,
    parent_pid: Principal,
) -> Result<(), InternalError> {
    let canister_cfg = ConfigOps::current_subnet_canister(role)?;
    let parent_role = SubnetRegistryOps::get(parent_pid)
        .map(|record| record.role)
        .ok_or(policy::topology::TopologyPolicyError::ParentNotFound(
            parent_pid,
        ))?;
    let parent_cfg = ConfigOps::current_subnet_canister(&parent_role)?;

    let observed = policy::topology::registry::RegistryRegistrationObservation {
        existing_role_pid: matches!(canister_cfg.kind, CanisterKind::Root)
            .then(|| SubnetRegistryOps::find_pid_for_role(role))
            .flatten(),
        existing_singleton_under_parent_pid: matches!(canister_cfg.kind, CanisterKind::Singleton)
            .then(|| {
                if role.is_wasm_store() {
                    None
                } else {
                    SubnetRegistryOps::find_child_pid_for_role(parent_pid, role)
                }
            })
            .flatten(),
    };

    policy::topology::registry::RegistryPolicy::can_register_role_observed(
        role,
        parent_pid,
        observed,
        &canister_cfg,
        &parent_role,
        &parent_cfg,
    )
    .map_err(policy::topology::TopologyPolicyError::from)?;

    Ok(())
}