salak_factory 0.7.0

A resource initialization factory using salak
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

//! Redis cluster configuration.
use crate::pool::{PoolConfig, PoolCustomizer};
use ::redis::cluster::*;
use ::redis::*;
use r2d2::{ManageConnection, Pool};
use salak::*;
use std::ops::Deref;
use std::{str::FromStr, time::Duration};

/// Redis Connection Pool Configuration.
///
/// |property|required|default|
/// |-|-|-|
/// |redis_cluster.url|true||
/// |redis_cluster.password|false||
/// |redis_cluster.readonly|false||
/// |redis_cluster.read_timeout|false||
/// |redis_cluster.write_timeout|false||
/// |redis_cluster.auto_reconnect|false||
/// |redis_cluster.pool.max_size|false|${pool.max_size:}|
/// |redis_cluster.pool.min_idle|false|${pool.min_idle:}|
/// |redis_cluster.pool.thread_name|false|${pool.thread_name:}|
/// |redis_cluster.pool.thread_nums|false|${pool.thread_nums:}|
/// |redis_cluster.pool.test_on_check_out|false|${pool.test_on_check_out:}|
/// |redis_cluster.pool.max_lifetime|false|${pool.max_lifetime:}|
/// |redis_cluster.pool.idle_timeout|false|${pool.idle_timeout:}|
/// |redis_cluster.pool.connection_timeout|false|${pool.connection_timeout:5s}|
/// |redis_cluster.pool.wait_for_init|false|${pool.wait_for_init:false}|
#[cfg_attr(docsrs, doc(cfg(feature = "redis_cluster")))]
#[derive(FromEnvironment, Debug)]
#[salak(prefix = "redis_cluster")]
pub struct RedisClusterConfig {
    url: wrapper::NonEmptyVec<String>,
    password: Option<String>,
    readonly: Option<bool>,
    read_timeout: Option<Duration>,
    write_timeout: Option<Duration>,
    auto_reconnect: Option<bool>,
    pool: PoolConfig,
}

/// Redis connection manager
#[cfg_attr(docsrs, doc(cfg(feature = "redis_cluster")))]
#[allow(missing_debug_implementations)]
pub struct RedisClusterConnectionManager {
    client: ClusterClient,
    read_timeout: Option<Duration>,
    write_timeout: Option<Duration>,
    auto_reconnect: Option<bool>,
}

impl ManageConnection for RedisClusterConnectionManager {
    type Connection = ClusterConnection;
    type Error = RedisError;

    fn connect(&self) -> Result<Self::Connection, Self::Error> {
        let conn = self.client.get_connection()?;
        if let Some(auto_reconnect) = self.auto_reconnect {
            conn.set_auto_reconnect(auto_reconnect);
        }
        conn.set_read_timeout(self.read_timeout)?;
        conn.set_write_timeout(self.write_timeout)?;
        Ok(conn)
    }

    fn is_valid(&self, conn: &mut Self::Connection) -> Result<(), Self::Error> {
        cmd("PING").query(conn)
    }

    fn has_broken(&self, conn: &mut Self::Connection) -> bool {
        !conn.check_connection()
    }
}

/// XXX
#[allow(missing_debug_implementations)]
pub struct RedisClusterPool(Pool<RedisClusterConnectionManager>);

impl Deref for RedisClusterPool {
    type Target = Pool<RedisClusterConnectionManager>;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

impl Resource for RedisClusterPool {
    type Config = RedisClusterConfig;
    type Customizer = PoolCustomizer<RedisClusterConnectionManager>;

    fn create(
        conf: Self::Config,
        _: &impl Factory,
        customizer: impl FnOnce(&mut Self::Customizer, &Self::Config) -> Result<(), PropertyError>,
    ) -> Result<Self, PropertyError> {
        let mut customize = PoolCustomizer::new();
        (customizer)(&mut customize, &conf)?;
        let mut config = vec![];
        for url in conf.url {
            config.push(ConnectionInfo::from_str(&url)?)
        }
        let mut builder = ClusterClientBuilder::new(config);
        if let Some(password) = conf.password {
            builder = builder.password(password);
        }
        if let Some(readonly) = conf.readonly {
            builder = builder.readonly(readonly);
        }
        let client = builder.open()?;

        Ok(RedisClusterPool(conf.pool.build_pool(
            RedisClusterConnectionManager {
                client,
                read_timeout: conf.read_timeout,
                write_timeout: conf.write_timeout,
                auto_reconnect: conf.auto_reconnect,
            },
            customize,
        )?))
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn redis_tests() {
        let env = Salak::builder()
            .set("redis_cluster.url[0]", "redis://127.0.0.1/")
            .build()
            .unwrap();
        let pool = env.init_resource::<RedisClusterPool>();
        assert_eq!(true, pool.is_ok());
    }
}