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

Go to download

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: 9.3.0

Show newest version

/*
 * Copyright 2017 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.common.annotations.VisibleForTesting;
import com.google.firebase.FirebaseApp;
import com.google.firebase.FirebaseOptions;

import java.util.Collections;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReference;

/** No-op base class of FirebaseAppStore. */
public class FirebaseAppStore {

  private static final AtomicReference sInstance = new AtomicReference<>();

  FirebaseAppStore() {}

  @Nullable
  public static FirebaseAppStore getInstance() {
    return sInstance.get();
  }

  // TODO: reenable persistence. See b/28158809.
  public static FirebaseAppStore initialize() {
    sInstance.compareAndSet(null /* expected */, new FirebaseAppStore());
    return sInstance.get();
  }

  /**
   * @hide
   */
  public static void setInstanceForTest(FirebaseAppStore firebaseAppStore) {
    sInstance.set(firebaseAppStore);
  }

  @VisibleForTesting
  public static void clearInstanceForTest() {
    FirebaseAppStore instance = sInstance.get();
    if (instance != null) {
      instance.resetStore();
    }
    sInstance.set(null);
  }

  /** The returned set is mutable. */
  public Set getAllPersistedAppNames() {
    return Collections.emptySet();
  }

  public void persistApp(@NonNull FirebaseApp app) {}

  public void removeApp(@NonNull String name) {}

  /** 
   * @return The restored {@link FirebaseOptions}, or null if it doesn't exist.
   */
  public FirebaseOptions restoreAppOptions(@NonNull String name) {
    return null;
  }

  protected void resetStore() {}
}