opendal/services/cacache/
writer.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::sync::Arc;
19
20use crate::raw::*;
21use crate::*;
22
23use super::core::CacacheCore;
24
25pub struct CacacheWriter {
26    core: Arc<CacacheCore>,
27    path: String,
28    buffer: oio::QueueBuf,
29}
30
31impl CacacheWriter {
32    pub fn new(core: Arc<CacacheCore>, path: String) -> Self {
33        Self {
34            core,
35            path,
36            buffer: oio::QueueBuf::new(),
37        }
38    }
39}
40
41impl oio::Write for CacacheWriter {
42    async fn write(&mut self, bs: Buffer) -> Result<()> {
43        self.buffer.push(bs);
44        Ok(())
45    }
46
47    async fn close(&mut self) -> Result<Metadata> {
48        let buf = self.buffer.clone().collect();
49        let length = buf.len() as u64;
50
51        self.core.set(&self.path, buf.to_bytes()).await?;
52
53        let meta = Metadata::new(EntryMode::from_path(&self.path)).with_content_length(length);
54        Ok(meta)
55    }
56
57    async fn abort(&mut self) -> Result<()> {
58        self.buffer.clear();
59        Ok(())
60    }
61}
opendal/services/cacache/writer.rs

opendal/services/cacache/
writer.rs
