udb 0.4.18

Universal Data Broker — a Rust gRPC broker over multiple databases (Postgres, MySQL, SQLite, MongoDB, ClickHouse, Cassandra, MSSQL, Redis, Qdrant, S3, Neo4j, …) with per-tenant RLS, 2PC, sagas, and CDC.
Documentation 
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//! Change-event emission for `ConfigService`: the acting principal (from the
//! verified claim) and the per-mutation `udb.config.flag.changed.v1` outbox event.

use super::super::native_helpers::{NativeEventContext, enqueue_outbox_event_with_context};
use super::ConfigServiceImpl;
use super::config::TOPIC_FLAG_CHANGED;

/// The acting principal for the change event, from the verified claim (falls back
/// to `system` when no claim context is present, e.g. internal callers).
pub(crate) fn event_actor() -> String {
    let subject = crate::runtime::service::method_security::current_claim_context()
        .subject
        .trim()
        .to_string();
    if subject.is_empty() {
        "system".to_string()
    } else {
        subject
    }
}

/// Emit the per-mutation `udb.config.flag.changed.v1` event `{key, actor,
/// revision}` (best-effort; the durable write already succeeded).
pub(crate) async fn emit_flag_changed(
    svc: &ConfigServiceImpl,
    tenant_id: &str,
    project_id: &str,
    flag_key: &str,
    actor: &str,
    revision: i64,
) {
    let Some(pool) = svc.pg_pool.as_ref() else {
        return;
    };
    let payload = serde_json::json!({
        "key": flag_key,
        "actor": actor,
        "revision": revision,
        "tenant_id": tenant_id,
        "project_id": project_id,
    });
    enqueue_outbox_event_with_context(
        pool,
        svc.outbox_relation.as_deref(),
        TOPIC_FLAG_CHANGED,
        flag_key,
        tenant_id,
        project_id,
        payload,
        NativeEventContext {
            actor: actor.to_string(),
            target_resource: flag_key.to_string(),
            ..NativeEventContext::default()
        },
        Some(&svc.metrics),
    )
    .await;
}