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 crate::s3::client::DEFAULT_REGION;
use crate::s3::client::MinioClient;
use crate::s3::error::ValidationErr;
use crate::s3::header_constants::*;
use crate::s3::multimap_ext::{Multimap, MultimapExt};
use crate::s3::response::CreateBucketResponse;
use crate::s3::segmented_bytes::SegmentedBytes;
use crate::s3::types::{BucketName, Region, S3Api, S3Request, ToS3Request};
use http::Method;
use std::sync::Arc;
use typed_builder::TypedBuilder;

/// Argument builder for the [`CreateBucket`](https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateBucket.html) S3 API operation.
///
/// This struct constructs the parameters required for the [`Client::create_bucket`](crate::s3::client::MinioClient::create_bucket) method.
#[derive(Clone, Debug, TypedBuilder)]
pub struct CreateBucket {
    #[builder(!default)] // force required
    client: MinioClient,
    #[builder(default, setter(into))]
    extra_headers: Option<Multimap>,
    #[builder(default, setter(into))]
    extra_query_params: Option<Multimap>,
    #[builder(default, setter(into))]
    region: Option<Region>,
    #[builder(!default, setter(into))] // force required + accept Into<String>
    bucket: BucketName,
    #[builder(default = false)]
    object_lock: bool,
}

impl S3Api for CreateBucket {
    type S3Response = CreateBucketResponse;
}

/// Builder type for [`CreateBucket`] that is returned by [`MinioClient::create_bucket`](crate::s3::client::MinioClient::create_bucket).
///
/// This type alias simplifies the complex generic signature generated by the `typed_builder` crate.
pub type CreateBucketBldr = CreateBucketBuilder<((MinioClient,), (), (), (), (BucketName,), ())>;

impl ToS3Request for CreateBucket {
    fn to_s3request(self) -> Result<S3Request, ValidationErr> {
        let region1: Option<&str> = self.region.as_ref().map(|r| r.as_str());
        let region2: Option<&str> = self.client.get_region_from_url();

        let region_str: String = match (region1, region2) {
            (None, None) => DEFAULT_REGION.as_str().to_string(),
            (Some(_), None) => self.region.unwrap().to_string(),
            (None, Some(v)) => v.to_string(),
            (Some(r1), Some(r2)) if r1 == r2 => self.region.unwrap().to_string(), // Both are Some and equal
            (Some(r1), Some(r2)) => {
                return Err(ValidationErr::RegionMismatch {
                    bucket_region: Region::new(r1)?,
                    region: Region::new(r2)?,
                });
            }
        };

        let mut headers: Multimap = self.extra_headers.unwrap_or_default();
        if self.object_lock {
            headers.add(X_AMZ_BUCKET_OBJECT_LOCK_ENABLED, "true");
        }

        let data: String = if region_str == DEFAULT_REGION.as_str() {
            String::new()
        } else {
            format!(
                "<CreateBucketConfiguration><LocationConstraint>{region_str}</LocationConstraint></CreateBucketConfiguration>",
            )
        };

        let body: Option<Arc<SegmentedBytes>> = match data.is_empty() {
            true => None,
            false => Some(Arc::new(SegmentedBytes::from(data))),
        };

        Ok(S3Request::builder()
            .client(self.client)
            .method(Method::PUT)
            .region(Some(Region::new(region_str)?))
            .bucket(self.bucket)
            .query_params(self.extra_query_params.unwrap_or_default())
            .headers(headers)
            .body(body)
            .build())
    }
}