wyrd-runtime 0.4.0

Wyrd runtime singleton and cross-cutting behavior shells.
Documentation 
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//! Runtime singleton and cross-cutting behavior shells.

#![deny(missing_docs)]

use std::sync::OnceLock;

use tokio::runtime::Runtime;

pub mod audit;
pub mod builtin_roles;
pub mod otel;
pub mod outbox;
pub mod permission;
pub mod permission_check;
pub mod principal;
pub mod redaction;
pub mod request_context;
pub mod request_id;

pub use permission::{
    Action, BifrostPermissionScope, BifrostSchemaScope, BifrostTableScope, Permission,
    PermissionScope, PermissionScopeError, PermissionSet, Resource, UnrepresentableIntersection,
};
pub use permission_check::{PermissionCheck, PermissionDenyReason, PermissionVerdict, RbacCheck};
pub use principal::{
    AuthContext, CardAttribution, InvalidRoleName, PlatformPrincipal, Principal, PrincipalId,
    PrincipalKind, PrincipalRef, RoleRef,
};
pub use request_context::{
    AcceptedAuthority, DelegationStep, RequestContext, TraceParent, audit_delegation_chain,
    delegated_attribution, needs_root_resolution, owning_root,
};
pub use wyrd_spec::reference::CardRefScope;

static RUNTIME: OnceLock<Runtime> = OnceLock::new();

/// Borrow the process-wide Tokio runtime singleton.
///
/// Initialized on first access with Tokio's multi-thread scheduler. Runtime
/// construction failure is treated as process-start failure rather than a
/// recoverable application error.
///
/// # Panics
/// Panics if Tokio cannot create the runtime.
#[must_use]
pub fn runtime() -> &'static Runtime {
    RUNTIME.get_or_init(|| {
        build_runtime().unwrap_or_else(|error| panic!("failed to build tokio runtime: {error}"))
    })
}

fn build_runtime() -> std::io::Result<Runtime> {
    Runtime::new()
}