minio 0.4.0

MinIO SDK for Amazon S3 compatible object storage access
Documentation 
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// MinIO Rust Library for Amazon S3 Compatible Cloud Storage
// Copyright 2025 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 minio::s3::builders::{ComposeSource, ObjectContent};
use minio::s3::response::{ComposeObjectResponse, PutObjectContentResponse, StatObjectResponse};
use minio::s3::response_traits::{HasBucket, HasObject};
use minio::s3::types::{BucketName, S3Api};
use minio_common::rand_src::RandSrc;
use minio_common::test_context::TestContext;
use minio_common::utils::rand_object_name;

#[minio_macros::test]
async fn compose_object(ctx: TestContext, bucket: BucketName) {
    let object_src = rand_object_name();
    let object_dst = rand_object_name();

    let size = 16_u64;
    let content = ObjectContent::new_from_stream(RandSrc::new(size), Some(size));

    let resp: PutObjectContentResponse = ctx
        .client
        .put_object_content(&bucket, &object_src, content)
        .unwrap()
        .build()
        .send()
        .await
        .unwrap();
    assert_eq!(resp.bucket(), Some(&bucket));

    let sources: Vec<ComposeSource> = {
        let mut sources = Vec::new();
        let mut s1 = ComposeSource::new(&bucket, &object_src).unwrap();
        s1.offset = Some(3);
        s1.length = Some(5);
        sources.push(s1);
        sources
    };

    let resp: ComposeObjectResponse = ctx
        .client
        .compose_object(&bucket, &object_dst, sources)
        .unwrap()
        .build()
        .send()
        .await
        .unwrap();
    assert_eq!(resp.bucket(), Some(&bucket));
    assert_eq!(resp.object(), Some(&object_dst));

    let resp: StatObjectResponse = ctx
        .client
        .stat_object(&bucket, &object_dst)
        .unwrap()
        .build()
        .send()
        .await
        .unwrap();
    assert_eq!(resp.size().unwrap(), 5);
    assert_eq!(resp.bucket(), Some(&bucket));
}