/*
 * Copyright DataStax, 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.datastax.oss.driver.internal.core.metadata;

import com.datastax.oss.driver.api.core.context.DriverContext;
import com.datastax.oss.driver.api.core.metadata.NodeStateListener;
import com.datastax.oss.driver.api.core.metadata.NodeStateListenerBase;
import com.datastax.oss.driver.api.core.session.SessionBuilder;
import net.jcip.annotations.ThreadSafe;

Default node state listener implementation with empty methods.
To activate this listener, modify the advanced.node-state-listener section in the driver configuration, for example: 
datastax-java-driver {
  advanced.node-state-listener {
    class = NoopNodeStateListener
  }
}
 See reference.conf (in the manual or core driver JAR) for more details. 
Note that if a listener is specified programmatically with SessionBuilder.withNodeStateListener(NodeStateListener), the configuration is ignored. /**
 * Default node state listener implementation with empty methods.
 *
 * <p>To activate this listener, modify the {@code advanced.node-state-listener} section in the
 * driver configuration, for example:
 *
 * <pre>
 * datastax-java-driver {
 *   advanced.node-state-listener {
 *     class = NoopNodeStateListener
 *   }
 * }
 * </pre>
 *
 * See {@code reference.conf} (in the manual or core driver JAR) for more details.
 *
 * <p>Note that if a listener is specified programmatically with {@link
 * SessionBuilder#withNodeStateListener(NodeStateListener)}, the configuration is ignored.
 */
@ThreadSafe
public class NoopNodeStateListener extends NodeStateListenerBase {

  public NoopNodeStateListener(@SuppressWarnings("unused") DriverContext context) {
    // nothing to do
  }
}