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// MinIO Rust Library for Amazon S3 Compatible Cloud Storage
// Copyright 2023 MinIO, Inc.
//
// 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.
use crate::s3::utils::{take_bucket, take_object};
use crate::s3::{
builders::ObjectContent,
error::Error,
types::{FromS3Response, S3Request},
};
use async_trait::async_trait;
use futures_util::TryStreamExt;
use http::HeaderMap;
use std::mem;
pub struct GetObjectResponse {
/// HTTP headers returned by the server, containing metadata such as `Content-Type`, `ETag`, etc.
pub headers: HeaderMap,
/// The AWS region where the bucket resides.
pub region: String,
/// Name of the bucket containing the object.
pub bucket: String,
/// Key (path) identifying the object within the bucket.
pub object: String,
/// Entity tag representing a specific version of the object.
pub etag: Option<String>,
/// Version ID of the object, if versioning is enabled. Value of the `x-amz-version-id` header.
pub version_id: Option<String>,
/// The content of the object as a stream or byte buffer.
pub content: ObjectContent,
/// Size of the object in bytes.
pub object_size: u64,
}
#[async_trait]
impl FromS3Response for GetObjectResponse {
async fn from_s3response(
req: S3Request,
resp: Result<reqwest::Response, Error>,
) -> Result<Self, Error> {
let mut resp = resp?;
let headers: HeaderMap = mem::take(resp.headers_mut());
let etag: Option<String> = headers
.get("etag")
.and_then(|v| v.to_str().ok())
.map(|s| s.trim_matches('"').to_string());
let version_id: Option<String> = headers
.get("x-amz-version-id")
.and_then(|v| v.to_str().ok().map(String::from));
let content_length: u64 = resp.content_length().ok_or(Error::ContentLengthUnknown)?;
let body = resp.bytes_stream().map_err(std::io::Error::other);
let content = ObjectContent::new_from_stream(body, Some(content_length));
Ok(Self {
headers,
region: req.inner_region,
bucket: take_bucket(req.bucket)?,
object: take_object(req.object)?,
version_id,
content,
object_size: content_length,
etag,
})
}
}