Example usage for com.amazonaws.services.s3.model AccessControlList revokeAllPermissions

Introduction

In this page you can find the example usage for com.amazonaws.services.s3.model AccessControlList revokeAllPermissions.

Prototype

public void revokeAllPermissions(Grantee grantee) 

Source Link

Document

Revokes the permissions of a grantee by removing the grantee from the access control list (ACL).

Usage

From source file:org.reswitchboard.utils.s3.access.App.java

License:Open Source License

public static void main(String[] args) {
    try {//from  w  w w .j  av  a2 s .c  om
        if (args.length == 0 || StringUtils.isNullOrEmpty(args[0]))
            throw new IllegalArgumentException("Bucket name can not be empty");

        String bucketName = args[0];
        String prefix = null;
        if (args.length > 1)
            prefix = args[1];

        AmazonS3 s3client = new AmazonS3Client(new ProfileCredentialsProvider());

        ListObjectsRequest listObjectsRequest = new ListObjectsRequest().withBucketName(bucketName);

        if (!StringUtils.isNullOrEmpty(prefix))
            listObjectsRequest.setPrefix(prefix);

        ObjectListing objectListing;

        do {
            objectListing = s3client.listObjects(listObjectsRequest);
            for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) {
                String key = objectSummary.getKey();
                System.out.println(" - " + key);

                for (int nAttempt = 1;; ++nAttempt) {
                    try {

                        AccessControlList acl = s3client.getObjectAcl(bucketName, key);
                        List<Grant> grants = acl.getGrantsAsList();
                        for (Grant grant : grants) {
                            //   System.out.println( "      Grant: " + grant.toString());

                            if (grant.getGrantee().equals(GroupGrantee.AllUsers)) {
                                System.out.println("      Revoking public access");

                                acl.revokeAllPermissions(GroupGrantee.AllUsers);
                                s3client.setObjectAcl(bucketName, key, acl);

                                break;
                            }
                        }

                        break;
                    } catch (Exception e) {
                        System.out.println("Error: " + e.toString());

                        if (nAttempt >= 10) {
                            throw new Exception("Maximum number of invalid attempts has been reeched");
                        }

                        // double back-off delay
                        Thread.sleep((long) (Math.pow(2, nAttempt) * 50));
                    }
                }

            }
            listObjectsRequest.setMarker(objectListing.getNextMarker());
        } while (objectListing.isTruncated());
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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