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#![warn(missing_docs)]
use async_trait::async_trait;
use futures::compat::Future01CompatExt;
use redis::{
aio::Connection as RedisConnection, Client, IntoConnectionInfo, RedisError, RedisResult,
};
pub type Pool = deadpool::Pool<Connection, RedisError>;
mod cmd_wrapper;
pub use cmd_wrapper::{cmd, Cmd};
mod pipeline_wrapper;
pub use pipeline_wrapper::{pipe, Pipeline};
pub struct Connection {
conn: Option<RedisConnection>,
}
impl Connection {
fn _take_conn(&mut self) -> RedisResult<RedisConnection> {
if let Some(conn) = self.conn.take() {
Ok(conn)
} else {
Err(redis::RedisError::from((
redis::ErrorKind::IoError,
"deadpool.redis: Connection to server lost due to previous query",
)))
}
}
fn _replace_conn(&mut self, conn: RedisConnection) {
self.conn = Some(conn)
}
}
pub struct Manager {
client: Client,
}
impl Manager {
pub fn new<T: IntoConnectionInfo>(params: T) -> RedisResult<Self> {
Ok(Self {
client: Client::open(params)?,
})
}
}
#[async_trait]
impl deadpool::Manager<Connection, RedisError> for Manager {
async fn create(&self) -> Result<Connection, RedisError> {
let conn = self.client.get_async_connection().compat().await?;
Ok(Connection { conn: Some(conn) })
}
async fn recycle(&self, conn: &mut Connection) -> Result<(), RedisError> {
if conn.conn.is_some() {
cmd("PING").execute(conn).await.map(|_| ())
} else {
Err(redis::RedisError::from((
redis::ErrorKind::IoError,
"deadpool.redis: Connection could not be recycled",
)))
}
}
}