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|
mod key;
pub use key::*;
mod cluster;
mod sentinel;
pub use sentinel::SentinelConfig;
use std::{sync::Arc, time::Duration};
use bb8::RunError;
// use bb8_redis::RedisConnectionManager;
use futures_util::lock::Mutex;
use redis::{
AsyncConnectionConfig, ProtocolVersion, RedisConnectionInfo, RedisError, TlsMode,
aio::ConnectionManagerConfig, sentinel::SentinelNodeConnectionInfo,
};
pub use self::cluster::RedisClusterConnectionManager;
pub const REDIS_CONN_TIMEOUT: Duration = Duration::from_secs(2);
pub enum RedisVariant {
Clustered,
NonClustered,
Sentinel(sentinel::SentinelConfig),
}
#[derive(Clone)]
pub enum RedisManager {
Clustered(redis::cluster_async::ClusterConnection),
NonClustered(redis::aio::ConnectionManager),
Sentinel(Arc<Mutex<redis::sentinel::SentinelClient>>),
}
impl RedisManager {
pub async fn new(dsn: &str, variant: RedisVariant) -> Self {
match variant {
RedisVariant::Clustered => {
let cli = redis::cluster::ClusterClient::builder(vec![dsn])
.retries(1)
.connection_timeout(REDIS_CONN_TIMEOUT)
.build()
.expect("Error initializing redis-unpooled cluster client");
let con = cli
.get_async_connection()
.await
.expect("Failed to get redis-cluster-unpooled connection");
RedisManager::Clustered(con)
}
RedisVariant::NonClustered => {
let cli =
redis::Client::open(dsn).expect("Error initializing redis unpooled client");
let con = redis::aio::ConnectionManager::new_with_config(
cli,
ConnectionManagerConfig::new()
.set_number_of_retries(1)
.set_connection_timeout(Some(REDIS_CONN_TIMEOUT)),
)
.await
.expect("Failed to get redis-unpooled connection manager");
RedisManager::NonClustered(con)
}
RedisVariant::Sentinel(cfg) => {
let tls_mode = if cfg.redis_tls_mode_secure {
TlsMode::Secure
} else {
TlsMode::Insecure
};
let protocol = if cfg.redis_use_resp3 {
ProtocolVersion::RESP3
} else {
ProtocolVersion::default()
};
let redis_connection_info = RedisConnectionInfo::default()
.set_db(cfg.redis_db.unwrap_or(0))
.set_protocol(protocol)
.set_username(cfg.redis_username.clone())
.set_password(cfg.redis_password.clone());
let sentinel = SentinelNodeConnectionInfo::default()
.set_redis_connection_info(redis_connection_info)
.set_tls_mode(tls_mode);
let cli = redis::sentinel::SentinelClient::build(
vec![dsn],
cfg.service_name.clone(),
Some(sentinel),
redis::sentinel::SentinelServerType::Master,
)
.expect("Failed to build sentinel client");
RedisManager::Sentinel(Arc::new(Mutex::new(cli)))
}
}
}
pub async fn get(&self) -> Result<RedisConnection, RunError<RedisError>> {
match self {
Self::Clustered(conn) => Ok(RedisConnection::Clustered(conn.clone())),
Self::NonClustered(conn) => Ok(RedisConnection::NonClustere(conn.clone())),
Self::Sentinel(conn) => {
let mut conn = conn.lock().await;
let con = conn
.get_async_connection_with_config(
&AsyncConnectionConfig::new()
.set_response_timeout(Some(REDIS_CONN_TIMEOUT)),
)
.await?;
Ok(RedisConnection::Sentinel(con))
}
}
}
}
pub enum RedisConnection {
Clustered(redis::cluster_async::ClusterConnection),
NonClustere(redis::aio::ConnectionManager),
Sentinel(redis::aio::MultiplexedConnection),
}
impl redis::aio::ConnectionLike for RedisConnection {
fn req_packed_command<'a>(
&'a mut self,
cmd: &'a redis::Cmd,
) -> redis::RedisFuture<'a, redis::Value> {
match self {
RedisConnection::Clustered(conn) => conn.req_packed_command(cmd),
RedisConnection::NonClustere(conn) => conn.req_packed_command(cmd),
RedisConnection::Sentinel(conn) => conn.req_packed_command(cmd),
}
}
fn req_packed_commands<'a>(
&'a mut self,
cmd: &'a redis::Pipeline,
offset: usize,
count: usize,
) -> redis::RedisFuture<'a, Vec<redis::Value>> {
match self {
RedisConnection::Clustered(conn) => conn.req_packed_commands(cmd, offset, count),
RedisConnection::NonClustere(conn) => conn.req_packed_commands(cmd, offset, count),
RedisConnection::Sentinel(conn) => conn.req_packed_commands(cmd, offset, count),
}
}
fn get_db(&self) -> i64 {
match self {
RedisConnection::Clustered(conn) => conn.get_db(),
RedisConnection::NonClustere(conn) => conn.get_db(),
RedisConnection::Sentinel(conn) => conn.get_db(),
}
}
}
#[cfg(test)]
mod tests {
use redis::AsyncCommands;
use super::RedisManager;
// Ensure basic set/get works -- should test sharding as well:
#[tokio::test]
// run with `cargo test -- --ignored redis` only when redis is up and configured
#[ignore]
async fn test_set_read_random_keys() {
let mgr = RedisManager::new(
"redis://127.0.0.1:6379/0",
super::RedisVariant::NonClustered,
)
.await;
let mut conn = mgr.get().await.unwrap();
for (val, key) in "abcdefghijklmnopqrstuvwxyz".chars().enumerate() {
let key = key.to_string();
let _: () = conn.set(key.clone(), val).await.unwrap();
assert_eq!(conn.get::<_, usize>(&key).await.unwrap(), val);
}
}
}
|
