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 org.apache.cassandra.cql3.functions;
  
  import org.apache.cassandra.concurrent.ThreadPoolExecutorJMXAdapter;
  import org.apache.cassandra.concurrent.NamedThreadFactory;
  import org.apache.cassandra.concurrent.ThreadPoolExecutorBase;
  
  import static java.util.concurrent.TimeUnit.MILLISECONDS;
  import static org.apache.cassandra.config.CassandraRelevantProperties.UDF_EXECUTOR_THREAD_KEEPALIVE_MS;
  import static org.apache.cassandra.utils.FBUtilities.getAvailableProcessors;
  import static org.apache.cassandra.utils.concurrent.BlockingQueues.newBlockingQueue;
  
  /**
   * Executor service which exposes stats via JMX, but which doesn't reference internal classes
   * as these are forbidden by the UDF execution sandbox.
   *
   * TODO: see if we can port to ExecutorPlus to avoid duplication
   */
  final class UDFExecutorService extends ThreadPoolExecutorBase
  {
      private static final int KEEPALIVE = UDF_EXECUTOR_THREAD_KEEPALIVE_MS.getInt();
  
      public UDFExecutorService(NamedThreadFactory threadFactory, String jmxPath)
      {
          super(getAvailableProcessors(), KEEPALIVE, MILLISECONDS, newBlockingQueue(), threadFactory);
          ThreadPoolExecutorJMXAdapter.register(jmxPath, this);
      }
  
      public int getCoreThreads()
      {
          return getCorePoolSize();
      }
  
      public void setCoreThreads(int newCorePoolSize)
      {
          setCorePoolSize(newCorePoolSize);
      }
  
      public int getMaximumThreads()
      {
          return getMaximumPoolSize();
      }
  
      public void setMaximumThreads(int maxPoolSize)
      {
          setMaximumPoolSize(maxPoolSize);
      }
  }
  