shove 0.11.3

Async tasks via pubsub on steroids. Comes with built-in support for complex queue configurations, audit logs, autoscaling consumer groups and more.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152

//! Backend / impl-trait registrations for the Redis Streams backend.
//!
//! Binds the Redis marker (`crate::markers::Redis`) to the concrete types in
//! this module via `impl Backend` and `impl HasCoordinatedGroups`, plus the
//! impl-trait bodies that carry the real work.
//!
//! `ConsumerImpl` is already implemented directly in `consumer.rs`; it is NOT
//! re-implemented here.

use std::future::Future;
use std::time::Duration;

use tokio_util::sync::CancellationToken;

use crate::autoscale_metrics::AutoscaleMetrics;
use crate::backend::{
    AutoscalerBackendImpl, Backend, QueueStatsProviderImpl, RegistryImpl, TopologyImpl,
    capability::HasCoordinatedGroups, sealed,
};
use crate::consumer_supervisor::SupervisorOutcome;
use crate::error::Result;
use crate::handler::MessageHandler;
use crate::markers::Redis;
use crate::topic::{SequencedTopic, Topic};

use super::autoscaler::{RedisAutoscalerBackend, XlenStatsProvider};
use super::client::{RedisClient, RedisConfig};
use super::consumer::RedisConsumer;
use super::consumer_group::{RedisConsumerGroupConfig, RedisConsumerGroupRegistry};
use super::publisher::RedisPublisher;
use super::topology::RedisTopologyDeclarer;

// ---------------------------------------------------------------------------
// Marker bindings
// ---------------------------------------------------------------------------

impl sealed::Sealed for Redis {}

impl Backend for Redis {
    type Config = RedisConfig;
    type Client = RedisClient;

    type PublisherImpl = RedisPublisher;
    type ConsumerImpl = RedisConsumer;
    type TopologyImpl = RedisTopologyDeclarer;
    type AutoscalerImpl = RedisAutoscalerBackend<XlenStatsProvider>;
    type QueueStatsImpl = XlenStatsProvider;

    async fn connect(config: Self::Config) -> Result<Self::Client> {
        RedisClient::connect(config).await
    }

    async fn make_publisher(client: &Self::Client) -> Result<Self::PublisherImpl> {
        Ok(RedisPublisher::new(client.clone()))
    }

    fn make_consumer(client: &Self::Client) -> Self::ConsumerImpl {
        RedisConsumer::new(client.clone())
    }

    fn make_declarer(client: &Self::Client) -> Self::TopologyImpl {
        RedisTopologyDeclarer::new(client.clone())
    }

    fn make_autoscaler(client: &Self::Client) -> Self::AutoscalerImpl {
        use std::sync::Arc;
        use tokio::sync::Mutex;
        let registry = Arc::new(Mutex::new(RedisConsumerGroupRegistry::new(client.clone())));
        RedisAutoscalerBackend::new(client.clone(), registry)
    }

    fn make_stats_provider(client: &Self::Client) -> Self::QueueStatsImpl {
        XlenStatsProvider::new(client.clone())
    }

    async fn close(_client: &Self::Client) {
        // Redis connections are closed when the last Arc<ClientInner> drops.
        // Nothing to do here.
    }

    async fn ping(client: &Self::Client, timeout: std::time::Duration) -> Result<()> {
        client.ping(timeout).await
    }
}

impl HasCoordinatedGroups for Redis {
    type ConsumerGroupConfig = RedisConsumerGroupConfig;
    type RegistryImpl = RedisConsumerGroupRegistry;

    fn make_registry(client: &Self::Client) -> Self::RegistryImpl {
        RedisConsumerGroupRegistry::new(client.clone())
    }
}

// ---------------------------------------------------------------------------
// TopologyImpl — delegate to the inherent `declare` method
// ---------------------------------------------------------------------------

impl TopologyImpl for RedisTopologyDeclarer {
    async fn declare<T: Topic>(&self) -> Result<()> {
        RedisTopologyDeclarer::declare(self, T::topology()).await
    }
}

// ---------------------------------------------------------------------------
// RegistryImpl
// ---------------------------------------------------------------------------

impl RegistryImpl for RedisConsumerGroupRegistry {
    type GroupConfig = RedisConsumerGroupConfig;

    async fn register<T, H>(
        &mut self,
        config: Self::GroupConfig,
        factory: impl Fn() -> H + Send + Sync + 'static,
        ctx: H::Context,
    ) -> Result<()>
    where
        T: Topic,
        H: MessageHandler<T>,
    {
        RedisConsumerGroupRegistry::register::<T, H>(self, config, factory, ctx).await
    }

    async fn register_fifo<T, H>(
        &mut self,
        config: Self::GroupConfig,
        factory: impl Fn() -> H + Send + Sync + 'static,
        ctx: H::Context,
    ) -> Result<()>
    where
        T: SequencedTopic,
        H: MessageHandler<T>,
    {
        RedisConsumerGroupRegistry::register_fifo::<T, H>(self, config, factory, ctx).await
    }

    fn cancellation_token(&self) -> CancellationToken {
        self.broker_shutdown_token()
    }

    fn set_default_handler_timeout(&mut self, timeout: std::time::Duration) {
        self.default_handler_timeout = Some(timeout);
    }

    async fn run_until_timeout<S>(self, signal: S, drain_timeout: Duration) -> SupervisorOutcome
    where
        S: Future<Output = ()> + Send + 'static,
    {
        RedisConsumerGroupRegistry::run_until_timeout(self, signal, drain_timeout).await
    }
}