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DeleteObject.java
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DeleteObject.java
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/*
* Copyright 2020 Google LLC
*
* 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
*
* http://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.
*/
package com.example.storage.object;
// [START storage_delete_file]
import com.google.cloud.storage.Blob;
import com.google.cloud.storage.Storage;
import com.google.cloud.storage.StorageOptions;
public class DeleteObject {
public static void deleteObject(String projectId, String bucketName, String objectName) {
// The ID of your GCP project
// String projectId = "your-project-id";
// The ID of your GCS bucket
// String bucketName = "your-unique-bucket-name";
// The ID of your GCS object
// String objectName = "your-object-name";
Storage storage = StorageOptions.newBuilder().setProjectId(projectId).build().getService();
Blob blob = storage.get(bucketName, objectName);
if (blob == null) {
System.out.println("The object " + objectName + " wasn't found in " + bucketName);
return;
}
// Optional: set a generation-match precondition to avoid potential race
// conditions and data corruptions. The request to upload returns a 412 error if
// the object's generation number does not match your precondition.
Storage.BlobSourceOption precondition =
Storage.BlobSourceOption.generationMatch(blob.getGeneration());
storage.delete(bucketName, objectName, precondition);
System.out.println("Object " + objectName + " was deleted from " + bucketName);
}
}
// [END storage_delete_file]