opendal/services/azfile/
backend.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::fmt::Debug;
19use std::fmt::Formatter;
20use std::sync::Arc;
21
22use http::Response;
23use http::StatusCode;
24use log::debug;
25use reqsign::AzureStorageConfig;
26use reqsign::AzureStorageLoader;
27use reqsign::AzureStorageSigner;
28
29use super::core::AzfileCore;
30use super::delete::AzfileDeleter;
31use super::error::parse_error;
32use super::lister::AzfileLister;
33use super::writer::AzfileWriter;
34use super::writer::AzfileWriters;
35use super::DEFAULT_SCHEME;
36use crate::raw::*;
37use crate::services::AzfileConfig;
38use crate::*;
39impl From<AzureStorageConfig> for AzfileConfig {
40    fn from(config: AzureStorageConfig) -> Self {
41        AzfileConfig {
42            account_name: config.account_name,
43            account_key: config.account_key,
44            sas_token: config.sas_token,
45            endpoint: config.endpoint,
46            root: None,                // root is not part of AzureStorageConfig
47            share_name: String::new(), // share_name is not part of AzureStorageConfig
48        }
49    }
50}
51
52impl Configurator for AzfileConfig {
53    type Builder = AzfileBuilder;
54
55    #[allow(deprecated)]
56    fn into_builder(self) -> Self::Builder {
57        AzfileBuilder {
58            config: self,
59            http_client: None,
60        }
61    }
62}
63
64/// Azure File services support.
65#[doc = include_str!("docs.md")]
66#[derive(Default, Clone)]
67pub struct AzfileBuilder {
68    config: AzfileConfig,
69
70    #[deprecated(since = "0.53.0", note = "Use `Operator::update_http_client` instead")]
71    http_client: Option<HttpClient>,
72}
73
74impl Debug for AzfileBuilder {
75    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
76        let mut ds = f.debug_struct("AzfileBuilder");
77
78        ds.field("config", &self.config);
79
80        ds.finish()
81    }
82}
83
84impl AzfileBuilder {
85    /// Set root of this backend.
86    ///
87    /// All operations will happen under this root.
88    pub fn root(mut self, root: &str) -> Self {
89        self.config.root = if root.is_empty() {
90            None
91        } else {
92            Some(root.to_string())
93        };
94
95        self
96    }
97
98    /// Set endpoint of this backend.
99    pub fn endpoint(mut self, endpoint: &str) -> Self {
100        if !endpoint.is_empty() {
101            // Trim trailing `/` so that we can accept `http://127.0.0.1:9000/`
102            self.config.endpoint = Some(endpoint.trim_end_matches('/').to_string());
103        }
104
105        self
106    }
107
108    /// Set account_name of this backend.
109    ///
110    /// - If account_name is set, we will take user's input first.
111    /// - If not, we will try to load it from environment.
112    pub fn account_name(mut self, account_name: &str) -> Self {
113        if !account_name.is_empty() {
114            self.config.account_name = Some(account_name.to_string());
115        }
116
117        self
118    }
119
120    /// Set account_key of this backend.
121    ///
122    /// - If account_key is set, we will take user's input first.
123    /// - If not, we will try to load it from environment.
124    pub fn account_key(mut self, account_key: &str) -> Self {
125        if !account_key.is_empty() {
126            self.config.account_key = Some(account_key.to_string());
127        }
128
129        self
130    }
131
132    /// Set file share name of this backend.
133    ///
134    /// # Notes
135    /// You can find more about from: <https://learn.microsoft.com/en-us/rest/api/storageservices/operations-on-shares--file-service>
136    pub fn share_name(mut self, share_name: &str) -> Self {
137        if !share_name.is_empty() {
138            self.config.share_name = share_name.to_string();
139        }
140
141        self
142    }
143
144    /// Specify the http client that used by this service.
145    ///
146    /// # Notes
147    ///
148    /// This API is part of OpenDAL's Raw API. `HttpClient` could be changed
149    /// during minor updates.
150    #[deprecated(since = "0.53.0", note = "Use `Operator::update_http_client` instead")]
151    #[allow(deprecated)]
152    pub fn http_client(mut self, client: HttpClient) -> Self {
153        self.http_client = Some(client);
154        self
155    }
156
157    /// Create a new `AfileBuilder` instance from an [Azure Storage connection string][1].
158    ///
159    /// [1]: https://learn.microsoft.com/en-us/azure/storage/common/storage-configure-connection-string
160    ///
161    /// # Example
162    /// ```
163    /// use opendal::Builder;
164    /// use opendal::services::Azfile;
165    ///
166    /// let conn_str = "AccountName=example;DefaultEndpointsProtocol=https;EndpointSuffix=core.windows.net";
167    ///
168    /// let mut config = Azfile::from_connection_string(&conn_str)
169    ///     .unwrap()
170    ///     // Add additional configuration if needed
171    ///     .share_name("myShare")
172    ///     .build()
173    ///     .unwrap();
174    /// ```
175    pub fn from_connection_string(conn_str: &str) -> Result<Self> {
176        let config =
177            raw::azure_config_from_connection_string(conn_str, raw::AzureStorageService::File)?;
178
179        Ok(AzfileConfig::from(config).into_builder())
180    }
181}
182
183impl Builder for AzfileBuilder {
184    type Config = AzfileConfig;
185
186    fn build(self) -> Result<impl Access> {
187        debug!("backend build started: {:?}", &self);
188
189        let root = normalize_root(&self.config.root.unwrap_or_default());
190        debug!("backend use root {root}");
191
192        let endpoint = match &self.config.endpoint {
193            Some(endpoint) => Ok(endpoint.clone()),
194            None => Err(Error::new(ErrorKind::ConfigInvalid, "endpoint is empty")
195                .with_operation("Builder::build")
196                .with_context("service", Scheme::Azfile)),
197        }?;
198        debug!("backend use endpoint {}", &endpoint);
199
200        let account_name_option = self
201            .config
202            .account_name
203            .clone()
204            .or_else(|| raw::azure_account_name_from_endpoint(endpoint.as_str()));
205
206        let account_name = match account_name_option {
207            Some(account_name) => Ok(account_name),
208            None => Err(
209                Error::new(ErrorKind::ConfigInvalid, "account_name is empty")
210                    .with_operation("Builder::build")
211                    .with_context("service", Scheme::Azfile),
212            ),
213        }?;
214
215        let config_loader = AzureStorageConfig {
216            account_name: Some(account_name),
217            account_key: self.config.account_key.clone(),
218            sas_token: self.config.sas_token.clone(),
219            ..Default::default()
220        };
221
222        let cred_loader = AzureStorageLoader::new(config_loader);
223        let signer = AzureStorageSigner::new();
224        Ok(AzfileBackend {
225            core: Arc::new(AzfileCore {
226                info: {
227                    let am = AccessorInfo::default();
228                    am.set_scheme(DEFAULT_SCHEME)
229                        .set_root(&root)
230                        .set_native_capability(Capability {
231                            stat: true,
232
233                            read: true,
234
235                            write: true,
236                            create_dir: true,
237                            delete: true,
238                            rename: true,
239
240                            list: true,
241
242                            shared: true,
243
244                            ..Default::default()
245                        });
246
247                    // allow deprecated api here for compatibility
248                    #[allow(deprecated)]
249                    if let Some(client) = self.http_client {
250                        am.update_http_client(|_| client);
251                    }
252
253                    am.into()
254                },
255                root,
256                endpoint,
257                loader: cred_loader,
258                signer,
259                share_name: self.config.share_name.clone(),
260            }),
261        })
262    }
263}
264
265/// Backend for azfile services.
266#[derive(Debug, Clone)]
267pub struct AzfileBackend {
268    core: Arc<AzfileCore>,
269}
270
271impl Access for AzfileBackend {
272    type Reader = HttpBody;
273    type Writer = AzfileWriters;
274    type Lister = oio::PageLister<AzfileLister>;
275    type Deleter = oio::OneShotDeleter<AzfileDeleter>;
276
277    fn info(&self) -> Arc<AccessorInfo> {
278        self.core.info.clone()
279    }
280
281    async fn create_dir(&self, path: &str, _: OpCreateDir) -> Result<RpCreateDir> {
282        self.core.ensure_parent_dir_exists(path).await?;
283        let resp = self.core.azfile_create_dir(path).await?;
284        let status = resp.status();
285
286        match status {
287            StatusCode::CREATED => Ok(RpCreateDir::default()),
288            _ => {
289                // we cannot just check status code because 409 Conflict has two meaning:
290                // 1. If a directory by the same name is being deleted when Create Directory is called, the server returns status code 409 (Conflict)
291                // 2. If a directory or file with the same name already exists, the operation fails with status code 409 (Conflict).
292                // but we just need case 2 (already exists)
293                // ref: https://learn.microsoft.com/en-us/rest/api/storageservices/create-directory
294                if resp
295                    .headers()
296                    .get("x-ms-error-code")
297                    .map(|value| value.to_str().unwrap_or(""))
298                    .unwrap_or_else(|| "")
299                    == "ResourceAlreadyExists"
300                {
301                    Ok(RpCreateDir::default())
302                } else {
303                    Err(parse_error(resp))
304                }
305            }
306        }
307    }
308
309    async fn stat(&self, path: &str, _: OpStat) -> Result<RpStat> {
310        let resp = if path.ends_with('/') {
311            self.core.azfile_get_directory_properties(path).await?
312        } else {
313            self.core.azfile_get_file_properties(path).await?
314        };
315
316        let status = resp.status();
317        match status {
318            StatusCode::OK => {
319                let meta = parse_into_metadata(path, resp.headers())?;
320                Ok(RpStat::new(meta))
321            }
322            _ => Err(parse_error(resp)),
323        }
324    }
325
326    async fn read(&self, path: &str, args: OpRead) -> Result<(RpRead, Self::Reader)> {
327        let resp = self.core.azfile_read(path, args.range()).await?;
328
329        let status = resp.status();
330        match status {
331            StatusCode::OK | StatusCode::PARTIAL_CONTENT => Ok((RpRead::new(), resp.into_body())),
332            _ => {
333                let (part, mut body) = resp.into_parts();
334                let buf = body.to_buffer().await?;
335                Err(parse_error(Response::from_parts(part, buf)))
336            }
337        }
338    }
339
340    async fn write(&self, path: &str, args: OpWrite) -> Result<(RpWrite, Self::Writer)> {
341        self.core.ensure_parent_dir_exists(path).await?;
342        let w = AzfileWriter::new(self.core.clone(), args.clone(), path.to_string());
343        let w = if args.append() {
344            AzfileWriters::Two(oio::AppendWriter::new(w))
345        } else {
346            AzfileWriters::One(oio::OneShotWriter::new(w))
347        };
348        Ok((RpWrite::default(), w))
349    }
350
351    async fn delete(&self) -> Result<(RpDelete, Self::Deleter)> {
352        Ok((
353            RpDelete::default(),
354            oio::OneShotDeleter::new(AzfileDeleter::new(self.core.clone())),
355        ))
356    }
357
358    async fn list(&self, path: &str, args: OpList) -> Result<(RpList, Self::Lister)> {
359        let l = AzfileLister::new(self.core.clone(), path.to_string(), args.limit());
360
361        Ok((RpList::default(), oio::PageLister::new(l)))
362    }
363
364    async fn rename(&self, from: &str, to: &str, _: OpRename) -> Result<RpRename> {
365        self.core.ensure_parent_dir_exists(to).await?;
366        let resp = self.core.azfile_rename(from, to).await?;
367        let status = resp.status();
368        match status {
369            StatusCode::OK => Ok(RpRename::default()),
370            _ => Err(parse_error(resp)),
371        }
372    }
373}
opendal/services/azfile/backend.rs

opendal/services/azfile/
backend.rs
