com.datastax.oss.driver.internal.core.metadata.token.DefaultReplicationStrategyFactory Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.datastax.oss.driver.internal.core.metadata.token;

import com.datastax.oss.driver.internal.core.context.InternalDriverContext;
import com.datastax.oss.driver.shaded.guava.common.base.Preconditions;
import java.util.Map;
import net.jcip.annotations.ThreadSafe;

@ThreadSafe
public class DefaultReplicationStrategyFactory implements ReplicationStrategyFactory {

  private final String logPrefix;

  public DefaultReplicationStrategyFactory(InternalDriverContext context) {
    this.logPrefix = context.getSessionName();
  }

  @Override
  public ReplicationStrategy newInstance(Map replicationConfig) {
    String strategyClass = replicationConfig.get("class");
    Preconditions.checkNotNull(
        strategyClass, "Missing replication strategy class in " + replicationConfig);
    switch (strategyClass) {
      case "org.apache.cassandra.locator.LocalStrategy":
        return new LocalReplicationStrategy();
      case "org.apache.cassandra.locator.SimpleStrategy":
        return new SimpleReplicationStrategy(replicationConfig);
      case "org.apache.cassandra.locator.NetworkTopologyStrategy":
        return new NetworkTopologyReplicationStrategy(replicationConfig, logPrefix);
      case "org.apache.cassandra.locator.EverywhereStrategy":
        return new EverywhereReplicationStrategy();
      default:
        throw new IllegalArgumentException("Unsupported replication strategy: " + strategyClass);
    }
  }
}