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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.

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/*
 * 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 static com.google.common.base.Preconditions.checkNotNull;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * A collection of internal utilities that can be used anywhere in the Admin SDK.
 */
public class SdkUtils {

  private static final String ADMIN_SDK_PROPERTIES = "admin_sdk.properties";
  private static final String SDK_VERSION = loadSdkVersion();

  /**
   * Returns the version of this Admin SDK distribution.
   *
   * @return A semver version string.
   */
  public static String getVersion() {
    return SDK_VERSION;
  }

  private static String loadSdkVersion() {
    try (InputStream in = SdkUtils.class.getClassLoader()
        .getResourceAsStream(ADMIN_SDK_PROPERTIES)) {
      Properties properties = new Properties();
      properties.load(checkNotNull(in, "Failed to load: " + ADMIN_SDK_PROPERTIES));
      return properties.getProperty("sdk.version");
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }

}