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

opendal/services/etcd/
writer.rs
