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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::error::{Error, ErrorCode};
use crate::s3::types::{FromS3Response, S3Request};
use crate::s3::utils::take_bucket;
use async_trait::async_trait;
use http::HeaderMap;
use std::mem;
/// Represents the response of the [bucket_exists()](crate::s3::client::Client::bucket_exists) API call.
/// This struct contains metadata and information about the existence of a bucket.
///
/// # Fields
///
/// * `headers` - HTTP headers returned by the server, containing metadata such as `Content-Type`, `ETag`, etc.
/// * `region` - The AWS region where the bucket resides. If the bucket does not exist, this will be an empty string.
/// * `bucket` - The name of the bucket being checked.
/// * `exists` - A boolean indicating whether the bucket exists or not.
#[derive(Clone, Debug)]
pub struct BucketExistsResponse {
/// 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,
/// The name of the bucket being checked.
pub bucket: String,
/// Whether the bucket exists or not.
pub exists: bool,
}
#[async_trait]
impl FromS3Response for BucketExistsResponse {
async fn from_s3response(
req: S3Request,
resp: Result<reqwest::Response, Error>,
) -> Result<Self, Error> {
match resp {
Ok(mut r) => Ok(Self {
headers: mem::take(r.headers_mut()),
region: req.inner_region,
bucket: take_bucket(req.bucket)?,
exists: true,
}),
Err(Error::S3Error(e)) if e.code == ErrorCode::NoSuchBucket => {
Ok(Self {
headers: e.headers,
region: String::new(), // NOTE the bucket does not exist and the region is not provided
bucket: take_bucket(req.bucket)?,
exists: false,
})
}
Err(e) => Err(e),
}
}
}