opendal/services/dbfs/
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 http::StatusCode;
21
22use super::core::DbfsCore;
23use super::error::parse_error;
24use crate::raw::*;
25use crate::*;
26
27pub struct DbfsWriter {
28    core: Arc<DbfsCore>,
29    path: String,
30}
31
32impl DbfsWriter {
33    const MAX_SIMPLE_SIZE: usize = 1024 * 1024;
34
35    pub fn new(core: Arc<DbfsCore>, _op: OpWrite, path: String) -> Self {
36        DbfsWriter { core, path }
37    }
38}
39
40impl oio::OneShotWrite for DbfsWriter {
41    async fn write_once(&self, bs: Buffer) -> Result<Metadata> {
42        let size = bs.len();
43
44        // MAX_BLOCK_SIZE_EXCEEDED will be thrown if this limit(1MB) is exceeded.
45        if size >= Self::MAX_SIMPLE_SIZE {
46            return Err(Error::new(
47                ErrorKind::Unsupported,
48                "AppendWrite has not been implemented for Dbfs",
49            ));
50        }
51
52        let req = self
53            .core
54            .dbfs_create_file_request(&self.path, bs.to_bytes())?;
55
56        let resp = self.core.client.send(req).await?;
57
58        let status = resp.status();
59        match status {
60            StatusCode::CREATED | StatusCode::OK => Ok(Metadata::default()),
61            _ => Err(parse_error(resp)),
62        }
63    }
64}
opendal/services/dbfs/writer.rs

opendal/services/dbfs/
writer.rs
