/*

* MinIO Java SDK for Amazon S3 Compatible Cloud Storage, (C) 2015 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

*

* https://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.

*/

import io.minio.MinioClient;

import io.minio.ObjectStat;

import io.minio.ServerSideEncryption;

import io.minio.ServerSideEncryptionCustomerKey;

import io.minio.StatObjectArgs;

import io.minio.errors.MinioException;

import java.io.IOException;

import java.security.InvalidKeyException;

import java.security.NoSuchAlgorithmException;

import java.util.HashMap;

import javax.crypto.KeyGenerator;

public class StatObject {

/** MinioClient.statObject() example. */

public static void main(String[] args)

throws IOException, NoSuchAlgorithmException, InvalidKeyException {

try {

/* play.min.io for test and development. */

MinioClient minioClient =

MinioClient.builder()

.endpoint("https://play.min.io")

.credentials("Q3AM3UQ867SPQQA43P2F", "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG")

.build();

/* Amazon S3: */

// MinioClient minioClient =

// MinioClient.builder()

// .endpoint("https://s3.amazonaws.com")

// .credentials("YOUR-ACCESSKEY", "YOUR-SECRETACCESSKEY")

// .build();

KeyGenerator keyGen = KeyGenerator.getInstance("AES");

keyGen.init(256);

ServerSideEncryptionCustomerKey ssec =

ServerSideEncryption.withCustomerKey(keyGen.generateKey());

String versionId = "ac38316c-fe14-4f96-9f76-8f675ae5a79e";

{

// Get information of an object.

ObjectStat objectStat =

minioClient.statObject(

StatObjectArgs.builder().bucket("my-bucketname").object("my-objectname").build());

System.out.println(objectStat);

}

{

// Get information of SSE-C encrypted object.

ObjectStat objectStat =

minioClient.statObject(

StatObjectArgs.builder()

.bucket("my-bucketname")

.object("my-encrypted-objectname")

.ssec(ssec) // Replace with actual key.

.build());

System.out.println(objectStat);

}

{

// Get information of a versioned object.

ObjectStat objectStat =

minioClient.statObject(

StatObjectArgs.builder()

.bucket("my-bucketname")

.object("my-versioned-objectname")

.versionId(versionId) // Replace with actual version ID.

.build());

System.out.println(objectStat);

}

{

// Get information of a SSE-C encrypted versioned object.

ObjectStat objectStat =

minioClient.statObject(

StatObjectArgs.builder()

.bucket("my-bucketname")

.object("my-encrypted-versioned-objectname")

.versionId(versionId) // Replace with actual version ID.

.ssec(ssec) // Replace with actual key.

.build());

System.out.println(objectStat);

}

{

// Get information of an object with extra headers and query parameters.

HashMap<String, String> headers = new HashMap<>();

headers.put("x-amz-request-payer", "requester");

HashMap<String, String> queryParams = new HashMap<>();

queryParams.put("partNumber", "1");

ObjectStat objectStat =

minioClient.statObject(

StatObjectArgs.builder()

.bucket("my-bucketname")

.object("my-objectname")

.extraHeaders(headers) // Replace with actual headers.

.extraQueryParams(queryParams) // Replace with actual query parameters.

.build());

System.out.println(objectStat);

}

} catch (MinioException e) {

System.out.println("Error occurred: " + e);

}

}

}