opendal/services/azblob/
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;
19
20use bytes::Buf;
21use quick_xml::de;
22
23use super::core::AzblobCore;
24use super::core::ListBlobsOutput;
25use super::error::parse_error;
26use crate::raw::*;
27use crate::*;
28
29pub struct AzblobLister {
30    core: Arc<AzblobCore>,
31
32    path: String,
33    delimiter: &'static str,
34    limit: Option<usize>,
35}
36
37impl AzblobLister {
38    pub fn new(core: Arc<AzblobCore>, path: String, recursive: bool, limit: Option<usize>) -> Self {
39        let delimiter = if recursive { "" } else { "/" };
40
41        Self {
42            core,
43            path,
44            delimiter,
45            limit,
46        }
47    }
48}
49
50impl oio::PageList for AzblobLister {
51    async fn next_page(&self, ctx: &mut oio::PageContext) -> Result<()> {
52        let resp = self
53            .core
54            .azblob_list_blobs(&self.path, &ctx.token, self.delimiter, self.limit)
55            .await?;
56
57        if resp.status() != http::StatusCode::OK {
58            return Err(parse_error(resp));
59        }
60
61        let bs = resp.into_body();
62
63        let output: ListBlobsOutput =
64            de::from_reader(bs.reader()).map_err(new_xml_deserialize_error)?;
65
66        // Try our best to check whether this list is done.
67        //
68        // - Check `next_marker`
69        if let Some(next_marker) = output.next_marker.as_ref() {
70            ctx.done = next_marker.is_empty();
71        };
72        ctx.token = output.next_marker.clone().unwrap_or_default();
73
74        let prefixes = output.blobs.blob_prefix;
75
76        for prefix in prefixes {
77            let de = oio::Entry::new(
78                &build_rel_path(&self.core.root, &prefix.name),
79                Metadata::new(EntryMode::DIR),
80            );
81
82            ctx.entries.push_back(de)
83        }
84
85        for object in output.blobs.blob {
86            let mut path = build_rel_path(&self.core.root, &object.name);
87            if path.is_empty() {
88                path = "/".to_string();
89            }
90
91            let meta = Metadata::new(EntryMode::from_path(&path))
92                // Keep fit with ETag header.
93                .with_etag(format!("\"{}\"", object.properties.etag.as_str()))
94                .with_content_length(object.properties.content_length)
95                .with_content_md5(object.properties.content_md5)
96                .with_content_type(object.properties.content_type)
97                .with_last_modified(parse_datetime_from_rfc2822(
98                    object.properties.last_modified.as_str(),
99                )?);
100
101            let de = oio::Entry::with(path, meta);
102            ctx.entries.push_back(de);
103        }
104
105        Ok(())
106    }
107}
opendal/services/azblob/lister.rs

opendal/services/azblob/
lister.rs
