/*
* Copyright 2019 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.google.cloud.examples.nio.snippets;
import com.google.auth.oauth2.ServiceAccountCredentials;
import com.google.cloud.storage.StorageOptions;
import com.google.cloud.storage.contrib.nio.CloudStorageConfiguration;
import com.google.cloud.storage.contrib.nio.CloudStorageFileSystem;
import java.io.FileInputStream;
import java.io.IOException;
/**
* A snippet for Google Cloud Storage NIO that shows how to create a {@link CloudStorageFileSystem}
* using explicitly-provided credentials instead of the default ones.
*/
public class UseExplicitCredentials {
public static void main(String... args) throws IOException {
// Create a file system for the bucket using the service account credentials
// saved in the file below.
String myCredentials = "/path/to/my/key.json";
CloudStorageFileSystem fs =
CloudStorageFileSystem.forBucket(
"mybucket",
CloudStorageConfiguration.DEFAULT,
StorageOptions.newBuilder()
.setCredentials(
ServiceAccountCredentials.fromStream(new FileInputStream(myCredentials)))
.build());
// Can now read and write to the bucket using fs
// (see e.g. ReadAllLines for an example).
}
}
