InMemoryRouterFactory.java

/**
 * Copyright 2016 LinkedIn Corp. All rights reserved.
 *
 * 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.
 */
package com.github.ambry.router;

import com.github.ambry.clustermap.ClusterMap;
import com.github.ambry.config.VerifiableProperties;
import com.github.ambry.notification.NotificationSystem;


/**
 * {@link InMemoryRouter} specific implementation of {@link RouterFactory}.
 * <p/>
 * Sets up all the supporting cast required for the operation of {@link InMemoryRouter} and returns a new instance on
 * {@link #getRouter()}.
 */
public class InMemoryRouterFactory implements RouterFactory {
  private static InMemoryRouter latestInstance = null;

  private final VerifiableProperties verifiableProperties;
  private final NotificationSystem notificationSystem;

  public InMemoryRouterFactory(VerifiableProperties verifiableProperties, ClusterMap clusterMap,
      NotificationSystem notificationSystem, Object sslFactory) {
    this.verifiableProperties = verifiableProperties;
    this.notificationSystem = notificationSystem;
  }

  @Override
  public Router getRouter() throws InstantiationException {
    latestInstance = new InMemoryRouter(verifiableProperties, notificationSystem);
    return latestInstance;
  }

  /**
   * Gets the instance of {@link InMemoryRouter} that was intanstiated most recently (helps in tests).
   * @return the instance of {@link InMemoryRouter} instantiated most recently.
   */
  public static InMemoryRouter getLatestInstance() {
    return latestInstance;
  }
}