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Copy pathcache.rs
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71 lines (62 loc) · 2.01 KB
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// Copyright 2021 Datafuse Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::ops::Deref;
use std::ops::DerefMut;
use std::sync::Arc;
use databend_meta_client::ClientHandle;
use databend_meta_runtime::DatabendRuntime;
use crate::meta_cache_types::MetaCacheTypes;
use crate::meta_client_source;
pub struct Cache {
pub(crate) inner: sub_cache::Cache<MetaCacheTypes>,
}
impl Deref for Cache {
type Target = sub_cache::Cache<MetaCacheTypes>;
fn deref(&self) -> &Self::Target {
&self.inner
}
}
impl DerefMut for Cache {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.inner
}
}
impl Cache {
/// Create a new cache with the given prefix and meta client.
///
/// The cache will start watching for changes immediately.
///
/// # Parameters
///
/// * `meta_client` - The meta client to interact with the remote data store.
/// * `prefix` - The prefix for the cache, used to identify the cache instance.
/// * `name` - The name of the cache, used for debugging and logging purposes.
pub async fn new(
meta_client: Arc<ClientHandle<DatabendRuntime>>,
prefix: impl ToString,
name: impl ToString,
) -> Self {
let name = name.to_string();
let inner = sub_cache::Cache::new(
meta_client_source::MetaClientSource {
client: meta_client,
name: name.clone(),
},
prefix,
name,
)
.await;
Cache { inner }
}
}