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use futures::future::Future;
use redis::{aio::ConnectionLike, cmd, Cmd, ErrorKind, FromRedisValue, RedisFuture, ToRedisArgs};
impl<T> Commands for T where T: ConnectionLike + Sized + Send + 'static {}
pub trait Commands: Sized + ConnectionLike + Send + 'static {
fn query<T>(self, cmd: &Cmd) -> RedisFuture<(Self, T)>
where
T: FromRedisValue + Send + 'static,
{
cmd.query_async(self)
}
fn execute<T>(self, cmd: &Cmd) -> RedisFuture<(Self, ())>
where
T: FromRedisValue + Send + 'static,
{
cmd.query_async(self)
}
fn ping(self) -> RedisFuture<(Self, ())> {
Box::new(
Cmd::new()
.arg("PING")
.query_async::<_, String>(self)
.and_then(|(conn, rsp)| {
if rsp == "PONG" {
Ok((conn, ()))
} else {
Err((ErrorKind::IoError, "ping failed").into())
}
}),
)
}
fn keys<K: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
key: K,
) -> RedisFuture<(Self, RV)> {
cmd("KEYS").arg(key).query_async(self)
}
fn get<K: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
key: K,
) -> RedisFuture<(Self, RV)> {
cmd(if key.is_single_arg() { "GET" } else { "MGET" })
.arg(key)
.query_async(self)
}
fn set<K: ToRedisArgs, V: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
key: K,
value: V,
) -> RedisFuture<(Self, RV)> {
cmd("SET").arg(key).arg(value).query_async(self)
}
fn set_nx<K: ToRedisArgs, V: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
key: K,
value: V,
) -> RedisFuture<(Self, RV)> {
cmd("SETNX").arg(key).arg(value).query_async(self)
}
fn set_multiple<K: ToRedisArgs, V: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
items: &[(K, V)],
) -> RedisFuture<(Self, RV)> {
cmd("MSET").arg(items).query_async(self)
}
fn set_multiple_nx<K: ToRedisArgs, V: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
items: &[(K, V)],
) -> RedisFuture<(Self, RV)> {
cmd("MSETNX").arg(items).query_async(self)
}
fn del<K: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
key: K,
) -> RedisFuture<(Self, RV)> {
cmd("DEL").arg(key).query_async(self)
}
fn exists<K: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
key: K,
) -> RedisFuture<(Self, RV)> {
cmd("EXISTS").arg(key).query_async(self)
}
fn db_size<K: ToRedisArgs, RV: FromRedisValue + Send + 'static>(
self,
key: K,
) -> RedisFuture<(Self, RV)> {
cmd("DBSIZE").arg(key).query_async(self)
}
}