Cloud Storage

Java api reference - https://googleapis.dev/java/google-cloud-storage/latest/index.html

Usages

static Storage storage = StorageOptions.getDefaultInstance().getService();

@Value("${google.storage.bucket}")
private String bucketname;

BlobInfo blobInfo = storage.create(BlobInfo.newBuilder(bucketname, fileName).setContentType(file.getContentType()).setAcl(new ArrayList<>(
            Arrays.asList(Acl.of(Acl.User.ofAllUsers(),
                                Acl.Role.READER)))).build(), file.getInputStream());

Access control lists

JSON API	XML API/gsutil	Description
private	private	Gives the bucket or object owner OWNER permission for a bucket or object.
bucketOwnerRead	bucket-owner-read	Gives the object owner OWNER permission, and gives the bucket owner READER permission. This is used only with objects.

.https://cloud.google.com/storage/docs/access-control/lists#predefined-acl

• Avoid setting ACLs that result in inaccessible objects.

  An inaccessible object is an object that cannot be downloaded (read) and can only be deleted. This can happen when the owner of an object leaves a project without granting anyone else OWNER or READER permission on the object. To avoid this problem, you can use the bucket-owner-read or bucket-owner-full-control predefined ACLs when you or anyone else uploads objects to your buckets.

Roles

.https://cloud.google.com/storage/docs/access-control/iam-permissions

set permissions with cloud console - https://cloud.google.com/storage/docs/cloud-console#_bucketpermission