//! Google Cloud Pub/Sub broker implementation for `RustStream`.
//!
//! Handlers, routers, codecs, and middleware come from the framework; this crate supplies the
//! transport over the official
//! [`google-cloud-pubsub`](https://docs.rs/google-cloud-pubsub) client.
//!
//! - A streaming pull subscription is the framework's message stream; ack and nack are native
//! per message, and the client extends ack deadlines in the background while a handler runs.
//! - Dead-letter topics and delivery-attempt counts are subscription settings, surfaced on
//! received messages, not crate machinery.
//! - Ordering keys map onto the partition key; message attributes carry headers directly, so
//! no envelope format is invented.
//! - The Pub/Sub emulator is a first-class target ([`PubSubBroker::emulator`]) for local
//! development and tests.
pub use ;
pub use PubSubError;
pub use ;
pub use ;
pub use PubSubSubscriber;
pub use PubSubSubscription;