opendal/services/mini_moka/
lister.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;
19use std::vec::IntoIter;
20
21use super::core::MiniMokaCore;
22use crate::raw::oio;
23use crate::raw::*;
24use crate::*;
25
26pub struct MiniMokaLister {
27    root: String,
28    keys: IntoIter<String>,
29}
30
31impl MiniMokaLister {
32    pub fn new(core: Arc<MiniMokaCore>, root: String, _path: String) -> Self {
33        // Get all keys from the cache
34        let keys: Vec<String> = core
35            .cache
36            .iter()
37            .map(|entry| entry.key().to_string())
38            .collect();
39
40        Self {
41            root,
42            keys: keys.into_iter(),
43        }
44    }
45}
46
47impl oio::List for MiniMokaLister {
48    async fn next(&mut self) -> Result<Option<oio::Entry>> {
49        match self.keys.next() {
50            Some(key) => {
51                // Convert absolute path to relative path
52                let rel_path = build_rel_path(&self.root, &key);
53
54                // Determine if it's a file or directory based on trailing slash
55                let mode = if key.ends_with('/') {
56                    EntryMode::DIR
57                } else {
58                    EntryMode::FILE
59                };
60
61                let metadata = Metadata::new(mode);
62
63                Ok(Some(oio::Entry::new(&rel_path, metadata)))
64            }
65            None => Ok(None),
66        }
67    }
68}