content: /*
   * 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.metrics;
  
  import static com.datastax.oss.driver.internal.core.util.Dependency.DROPWIZARD;
  
  import com.datastax.oss.driver.api.core.context.DriverContext;
  import com.datastax.oss.driver.api.core.metadata.Node;
  import com.datastax.oss.driver.api.core.metrics.Metrics;
  import com.datastax.oss.driver.internal.core.util.DefaultDependencyChecker;
  import java.util.Optional;
  import net.jcip.annotations.ThreadSafe;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  @ThreadSafe
  public class DefaultMetricsFactory implements MetricsFactory {
  
    private static final Logger LOG = LoggerFactory.getLogger(DefaultMetricsFactory.class);
  
    private final MetricsFactory delegate;
  
    @SuppressWarnings("unused")
    public DefaultMetricsFactory(DriverContext context) {
      if (DefaultDependencyChecker.isPresent(DROPWIZARD)) {
        this.delegate = new DropwizardMetricsFactory(context);
      } else {
        this.delegate = new NoopMetricsFactory(context);
      }
      LOG.debug("[{}] Using {}", context.getSessionName(), delegate.getClass().getSimpleName());
    }
  
    @Override
    public Optional<Metrics> getMetrics() {
      return delegate.getMetrics();
    }
  
    @Override
    public SessionMetricUpdater getSessionUpdater() {
      return delegate.getSessionUpdater();
    }
  
    @Override
    public NodeMetricUpdater newNodeUpdater(Node node) {
      return delegate.newNodeUpdater(node);
    }
  }
  