qubit-event-bus 0.6.3

A lightweight, thread-safe in-process event bus for Rust
Documentation 
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/*******************************************************************************
 *
 *    Copyright (c) 2026 Haixing Hu.
 *
 *    SPDX-License-Identifier: Apache-2.0
 *
 *    Licensed under the Apache License, Version 2.0.
 *
 ******************************************************************************/
//! Core event bus contracts, value objects, options, and errors.
//!
// qubit-style: allow coverage-cfg

mod ack_mode;
mod acknowledgement;
#[cfg(coverage)]
mod coverage;
mod dead_letter_record;
mod event_bus;
mod event_bus_error;
mod event_bus_factory;
pub(crate) mod event_envelope;
mod event_envelope_builder;
mod into_event_bus_result;
pub(crate) mod publish_options;
mod publish_options_builder;
mod retry_options;
pub(crate) mod subscribe_options;
mod subscribe_options_builder;
mod subscription;
mod topic;
mod topic_key;

pub use ack_mode::AckMode;
pub use acknowledgement::Acknowledgement;
#[cfg(coverage)]
pub use coverage::coverage_exercise_core_defensive_paths;
pub use dead_letter_record::{
    DeadLetterOriginalPayload,
    DeadLetterPayload,
    DeadLetterRecord,
};
pub use event_bus::{
    BatchPublishFailure,
    BatchPublishResult,
    EventBus,
};
pub use event_bus_error::{
    EventBusError,
    EventBusResult,
};
pub use event_bus_factory::EventBusFactory;
#[cfg(coverage)]
pub use event_bus_factory::coverage_exercise_event_bus_factory_default_regions;
pub use event_envelope::{
    EventEnvelope,
    EventEnvelopeMetadata,
};
pub use event_envelope_builder::EventEnvelopeBuilder;
pub use into_event_bus_result::IntoEventBusResult;
pub use publish_options::PublishOptions;
pub use publish_options_builder::PublishOptionsBuilder;
pub use retry_options::{
    AttemptTimeoutOption,
    AttemptTimeoutPolicy,
    RetryDelay,
    RetryJitter,
    RetryOptions,
};
pub use subscribe_options::{
    DeadLetterStrategy,
    DeadLetterStrategyAny,
    DeadLetterStrategyAnyCallback,
    DeadLetterStrategyCallback,
    SubscribeOptions,
    discard_dead_letters,
    prefixed_dead_letters,
    standard_dead_letters_to,
};
pub use subscribe_options_builder::SubscribeOptionsBuilder;
pub use subscription::Subscription;
pub(crate) use subscription::SubscriptionState;
pub use topic::Topic;
pub use topic_key::TopicKey;