### Response Elements

XML response for this API is similar to [AWS STS AssumeRole](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html#API_AssumeRole_ResponseElements)

### Errors

XML error response for this API is similar to [AWS STS AssumeRole](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html#API_AssumeRole_Errors)

## Sample `POST` Request

```

export MINIO_ROOT_PASSWORD="minio123"

# Download AWS CLI
echo -n "Download and install AWS CLI"
rm -rf /usr/local/aws-cli || sudo rm -rf /usr/local/aws-cli
curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip -qq awscliv2.zip
./aws/install || sudo ./aws/install
echo "done"

# Add credentials to ~/.aws/credentials
if ! [ -d ~/.aws ]; then
	mkdir -p ~/.aws
fi
cat >~/.aws/credentials <<EOF
[enterprise]

}

// Format returns an ETag that is formatted as specified
// by AWS S3.
//
// An AWS S3 ETag is 16 bytes long and, in case of a multipart
// upload, has a `-N` suffix encoding the number of object parts.
// An ETag is not AWS S3 compatible when encrypted. When sending
// an ETag back to an S3 client it has to be formatted to be
// AWS S3 compatible.
//
// Therefore, Format returns the last 16 bytes of an encrypted

- github.com/aws/aws-sdk-go-v2/service/sso: [v1.22.1](https://github.com/aws/aws-sdk-go-v2/tree/service/sso/v1.22.1)
- github.com/aws/aws-sdk-go-v2/service/ssooidc: [v1.26.2](https://github.com/aws/aws-sdk-go-v2/tree/service/ssooidc/v1.26.2)

        Profile profile = newProfile(ActivationOS.newBuilder().version("6.5.0-1014-aws"));

        assertActivation(true, profile, newContext(null, newProperties("linux", "6.5.0-1014-aws", "amd64")));
        assertActivation(true, profile, newContext(null, newProperties("windows", "6.5.0-1014-aws", "aarch64")));

        assertActivation(false, profile, newContext(null, newProperties("linux", "3.1.0", "amd64")));

## Highlights

- Supports source and destination buckets to have the same name unlike AWS S3, addresses variety of usecases such as *Splunk*, *Veeam* site to site DR.
- Supports object locking/retention across source and destination buckets natively out of the box, unlike AWS S3.

### 1. Prerequisites

- Install MinIO Server from [here](https://min.io/docs/minio/linux/index.html#procedure).
- Familiarity with AWS S3 API.
- Familiarity with Python and installing dependencies.

### 2. Install boto3

Install `aws-sdk-python` from AWS SDK for Python official docs [here](https://aws.amazon.com/sdk-for-python/)

### 3. Example

// AWS Signature V4 chunked reader.
type s3UnsignedChunkedReader struct {
	reader   *bufio.Reader
	trailers http.Header

	buffer []byte
	offset int
	err    error
	debug  bool
}

func (cr *s3UnsignedChunkedReader) Close() (err error) {
	return cr.err
}

// Read - implements `io.Reader`, which transparently decodes
// the incoming AWS Signature V4 streaming signature.

MinIO implements an S3 extension to the [PostUpload](https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPOST.html) where in a special fan-out list is sent along with the TSB's for MinIO make multiple uploads from a single source stream. Optionally supports custom metadata, tags and other retention settings. All objects are also readable independently once upload is completed via the regular S3 [GetObject](https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObject.html) API.

```sh
aws s3api put-object --bucket testbucket --key lockme --object-lock-mode GOVERNANCE --object-lock-retain-until-date "2019-11-20"  --body /etc/issue
```

See <https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock-overview.html> for AWS S3 spec on object locking and permissions required for object retention and governance bypass overrides.