shove 0.7.3

Async tasks via pubsub on steroids. Comes with built-in support for complex queue configurations, audit logs, autoscaling consumer groups and more.
Documentation 
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pub mod audit;
pub mod autoscaler;
pub mod consumer;
pub mod error;
pub mod handler;
#[doc(hidden)]
pub mod macros;
pub mod metadata;
pub mod outcome;
pub mod publisher;
pub mod topic;
pub mod topology;

mod backends;
pub(crate) mod retry;

pub use audit::{AuditHandler, AuditRecord, Audited};
pub use consumer::{
    Consumer, ConsumerOptions, DEFAULT_HANDLER_TIMEOUT, DEFAULT_MAX_MESSAGE_SIZE,
    DEFAULT_MAX_PENDING_PER_KEY,
};
pub use error::ShoveError;
pub use handler::MessageHandler;
pub use metadata::{DeadMessageMetadata, MessageMetadata};
pub use outcome::Outcome;
pub use publisher::Publisher;
#[cfg(any(feature = "rabbitmq", feature = "pub-aws-sns"))]
use std::time::Duration;
pub use topic::{SequencedTopic, Topic};
pub use topology::{
    HoldQueue, QueueTopology, SequenceConfig, SequenceFailure, TopologyBuilder, TopologyDeclarer,
    declare_topic,
};

pub use autoscaler::{
    Autoscaler, AutoscalerBackend, AutoscalerConfig, ScalingDecision, ScalingMetrics,
    ScalingStrategy, Stabilized, ThresholdStrategy,
};

#[cfg(feature = "audit")]
pub use audit::{AuditLog, ShoveAuditHandler};

/// Grace period for in-flight operations before closing connections.
#[cfg(any(feature = "rabbitmq", feature = "pub-aws-sns"))]
pub(crate) const SHUTDOWN_GRACE: Duration = Duration::from_millis(500);

// Backend re-exports
#[cfg(feature = "pub-aws-sns")]
pub mod sns {
    pub use crate::backends::sns::{
        client::{SnsClient, SnsConfig},
        publisher::SnsPublisher,
        topology::{SnsTopologyDeclarer, TopicRegistry},
    };

    #[cfg(feature = "aws-sns-sqs")]
    pub use crate::backends::sns::{
        autoscaler::SqsAutoscalerBackend,
        consumer::SqsConsumer,
        consumer_group::{SqsConsumerGroup, SqsConsumerGroupConfig},
        registry::SqsConsumerGroupRegistry,
        stats::{SqsQueueStats, SqsQueueStatsProvider, SqsQueueStatsProviderTrait},
        topology::QueueRegistry,
    };
}

#[cfg(feature = "nats")]
pub mod nats {
    pub use crate::backends::nats::autoscaler::{
        JetStreamStatsProvider, NatsQueueStats, NatsQueueStatsProvider,
    };
    pub use crate::backends::nats::{
        NatsAutoscalerBackend, NatsClient, NatsConfig, NatsConsumer, NatsConsumerGroup,
        NatsConsumerGroupConfig, NatsConsumerGroupRegistry, NatsPublisher, NatsTopologyDeclarer,
    };
}

#[cfg(feature = "kafka")]
pub mod kafka {
    pub use crate::backends::kafka::autoscaler::{
        KafkaLagStatsProvider, KafkaQueueStats, KafkaQueueStatsProvider,
    };
    pub use crate::backends::kafka::{
        KafkaAutoscalerBackend, KafkaClient, KafkaConfig, KafkaConsumer, KafkaConsumerGroup,
        KafkaConsumerGroupConfig, KafkaConsumerGroupRegistry, KafkaPublisher,
        KafkaTopologyDeclarer,
    };
}

#[cfg(feature = "rabbitmq")]
pub mod rabbitmq {
    pub use crate::backends::rabbitmq::{
        autoscaler::RabbitMqAutoscalerBackend,
        client::{RabbitMqClient, RabbitMqConfig},
        consumer::RabbitMqConsumer,
        consumer_group::{ConsumerGroup, ConsumerGroupConfig},
        headers::MESSAGE_ID_KEY,
        management::{ManagementConfig, QueueStats, QueueStatsProvider},
        publisher::RabbitMqPublisher,
        registry::ConsumerGroupRegistry,
        topology::RabbitMqTopologyDeclarer,
    };
}