PresignedPostPolicy.java

/*
 * Minio Java Library 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.PostPolicy;
import io.minio.errors.MinioException;

import java.io.IOException;
import java.util.Map;
import java.security.NoSuchAlgorithmException;
import java.security.InvalidKeyException;

import org.xmlpull.v1.XmlPullParserException;
import org.joda.time.DateTime;


public class PresignedPostPolicy {
  public static void main(String[] args)
    throws NoSuchAlgorithmException, IOException, InvalidKeyException, XmlPullParserException, MinioException {
    // Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY and my-bucketname are
    // dummy values, please replace them with original values.
    // Set s3 endpoint, region is calculated automatically
    MinioClient s3Client = new MinioClient("https://s3.amazonaws.com", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY");

    PostPolicy policy = new PostPolicy("my-bucketname", "my-objectname", DateTime.now().plusDays(7));
    policy.setContentType("image/png");
    Map<String,String> formData = s3Client.presignedPostPolicy(policy);

    System.out.print("curl -X POST ");
    for (Map.Entry<String,String> entry : formData.entrySet()) {
      System.out.print(" -F " + entry.getKey() + "=" + entry.getValue());
    }
    System.out.println(" -F file=@/tmp/userpic.png https://my-bucketname.s3.amazonaws.com/");
  }
}