opendal/services/moka/
core.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use std::fmt::Debug;
19
20use moka::future::Cache;
21
22use crate::*;
23
24/// Value stored in moka cache containing both metadata and content
25#[derive(Clone)]
26pub struct MokaValue {
27    /// Stored metadata in moka cache.
28    pub metadata: Metadata,
29    /// Stored content in moka cache.
30    pub content: Buffer,
31}
32
33#[derive(Clone)]
34pub struct MokaCore {
35    pub cache: Cache<String, MokaValue>,
36}
37
38impl Debug for MokaCore {
39    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
40        f.debug_struct("MokaCore")
41            .field("size", &self.cache.weighted_size())
42            .field("count", &self.cache.entry_count())
43            .finish()
44    }
45}
46
47impl MokaCore {
48    pub async fn get(&self, key: &str) -> Result<Option<MokaValue>> {
49        Ok(self.cache.get(key).await)
50    }
51
52    pub async fn set(&self, key: &str, value: MokaValue) -> Result<()> {
53        self.cache.insert(key.to_string(), value).await;
54        Ok(())
55    }
56
57    pub async fn delete(&self, key: &str) -> Result<()> {
58        self.cache.invalidate(key).await;
59        Ok(())
60    }
61}
opendal/services/moka/core.rs

opendal/services/moka/
core.rs
