com.google.firebase.internal.ApplicationDefaultCredentialsProvider Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of firebase-admin Show documentation

This is the official Firebase Admin Java SDK. Build extraordinary native JVM apps in minutes with Firebase. The Firebase platform can power your app’s backend, user authentication, static hosting, and more.

There is a newer version: 9.2.0

Show newest version

/*
 * Copyright 2021 Google 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
 *
 *     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.firebase.internal;

import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;

/**
 * Provides a hook to override application default credentials (ADC) lookup for tests. ADC has
 * a dependency on environment variables, and Java famously doesn't support environment variable
 * manipulation at runtime. With this class, the test cases that require ADC has a way to register
 * their own mock credentials as ADC.
 *
 * Once we are able to upgrade to Mockito 3.x (requires Java 8+), we can drop this class
 * altogether, and use Mockito tools to mock the behavior of the GoogleCredentials static methods.
 */
public class ApplicationDefaultCredentialsProvider {

  private static GoogleCredentials cachedCredentials;

  public static GoogleCredentials getApplicationDefault() throws IOException {
    if (cachedCredentials != null) {
      return cachedCredentials;
    }

    return GoogleCredentials.getApplicationDefault();
  }

  public static void setApplicationDefault(GoogleCredentials credentials) {
    cachedCredentials = credentials;
  }
}