Feature up/ilm (#61)

* fix delete-marker expiration. add api_restore.

crates/ecstore/src/client/api_get_object_file.rs

@@ -0,0 +1,141 @@
+// Copyright 2024 RustFS Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#![allow(unused_imports)]
+#![allow(unused_variables)]
+#![allow(unused_mut)]
+#![allow(unused_assignments)]
+#![allow(unused_must_use)]
+#![allow(clippy::all)]
+
+use bytes::Bytes;
+use http::HeaderMap;
+use std::io::Cursor;
+use tokio::io::BufReader;
+#[cfg(not(windows))]
+use std::os::unix::fs::PermissionsExt;
+#[cfg(not(windows))]
+use std::os::unix::fs::OpenOptionsExt;
+#[cfg(not(windows))]
+use std::os::unix::fs::MetadataExt;
+#[cfg(windows)]
+use std::os::windows::fs::MetadataExt;
+
+use crate::client::{
+    api_error_response::err_invalid_argument,
+    api_get_options::GetObjectOptions,
+    transition_api::{ObjectInfo, ReadCloser, ReaderImpl, RequestMetadata, TransitionClient, to_object_info},
+};
+
+impl TransitionClient {
+    pub async fn fget_object(&self, bucket_name: &str, object_name: &str, file_path: &str, opts: GetObjectOptions) -> Result<(), std::io::Error> {
+        match std::fs::metadata(file_path) {
+            Ok(file_path_stat) => {
+                let ft = file_path_stat.file_type();
+                if ft.is_dir() {
+                    return Err(std::io::Error::other(err_invalid_argument("filename is a directory.")));
+                }
+            },
+            Err(err) => {
+                return Err(std::io::Error::other(err));
+            }
+        }
+
+        let path = std::path::Path::new(file_path);
+        if let Some(parent) = path.parent() {
+            if let Some(object_dir) = parent.file_name() {
+                match std::fs::create_dir_all(object_dir) {
+                    Ok(_) => {
+                        let dir = std::path::Path::new(object_dir);
+                        if let Ok(dir_stat) = dir.metadata() {
+                            #[cfg(not(windows))]
+                            dir_stat.permissions().set_mode(0o700);
+                        }
+                    }
+                    Err(err) => {
+                        return Err(std::io::Error::other(err));
+                    }
+                }
+            }
+        }
+
+        let object_stat = match self.stat_object(bucket_name, object_name, &opts).await {
+            Ok(object_stat) => object_stat,
+            Err(err) => {
+                return Err(std::io::Error::other(err));
+            }
+        };
+
+        let mut file_part_path = file_path.to_string();
+        file_part_path.push_str(""/*sum_sha256_hex(object_stat.etag.as_bytes())*/);
+        file_part_path.push_str(".part.rustfs");
+
+        #[cfg(not(windows))]
+        let file_part = match std::fs::OpenOptions::new().mode(0o600).open(file_part_path.clone()) {
+            Ok(file_part) => file_part,
+            Err(err) => {
+                return Err(std::io::Error::other(err));
+            }
+        };
+        #[cfg(windows)]
+        let file_part = match std::fs::OpenOptions::new().open(file_part_path.clone()) {
+            Ok(file_part) => file_part,
+            Err(err) => {
+                return Err(std::io::Error::other(err));
+            }
+        };
+
+        let mut close_and_remove = true;
+        /*defer(|| {
+            if close_and_remove {
+                _ = file_part.close();
+                let _ = std::fs::remove(file_part_path);
+            }
+        });*/
+
+        let st = match file_part.metadata() {
+            Ok(st) => st,
+            Err(err) => {
+                return Err(std::io::Error::other(err));
+            }
+        };
+
+        let mut opts = opts;
+        #[cfg(windows)]
+        if st.file_size() > 0 {
+            opts.set_range(st.file_size() as i64, 0);
+        }
+
+        let object_reader = match self.get_object(bucket_name, object_name, &opts) {
+            Ok(object_reader) => object_reader,
+            Err(err) => {
+                return Err(std::io::Error::other(err));
+            }
+        };
+
+        /*if let Err(err) = std::fs::copy(file_part, object_reader) {
+            return Err(std::io::Error::other(err));
+        }*/
+
+        close_and_remove = false;
+        /*if let Err(err) = file_part.close() {
+            return Err(std::io::Error::other(err));
+        }*/
+
+        if let Err(err) = std::fs::rename(file_part_path, file_path) {
+            return Err(std::io::Error::other(err));
+        }
+
+        Ok(())
+    }
+}