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.utils;
  
  import java.time.Duration;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.function.BiFunction;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import accord.utils.Gen;
  import accord.utils.Property;
  import accord.utils.Property.Command;
  
  import static accord.utils.Property.multistep;
  
  public class LoggingCommand<State, SystemUnderTest, Result> extends Property.ForwardingCommand<State, SystemUnderTest, Result>
  {
      private static final Logger logger = LoggerFactory.getLogger(LoggingCommand.class);
  
      public LoggingCommand(Command<State, SystemUnderTest, Result> delegate)
      {
          super(delegate);
      }
  
      public static <State, SystemUnderTest> BiFunction<State, Gen<Command<State, SystemUnderTest, ?>>, Gen<Command<State, SystemUnderTest, ?>>> factory()
      {
          return (state, commandGen) -> rs -> {
              Command<State, SystemUnderTest, ?> c = commandGen.next(rs);
              if (!(c instanceof Property.MultistepCommand))
                  return new LoggingCommand<>(c);
              Property.MultistepCommand<State, SystemUnderTest> multistep = (Property.MultistepCommand<State, SystemUnderTest>) c;
              List<Command<State, SystemUnderTest, ?>> subcommands = new ArrayList<>();
              for (var sub : multistep)
                  subcommands.add(new LoggingCommand<>(sub));
              return multistep(subcommands);
          };
      }
  
      @Override
      public Result apply(State s) throws Throwable
      {
          String name = detailed(s);
          long startNanos = Clock.Global.nanoTime();
          try
          {
              logger.info("Starting command: {}", name);
              Result o = super.apply(s);
              logger.info("Command {} was success after {}", name, Duration.ofNanos(Clock.Global.nanoTime() - startNanos));
              return o;
          }
          catch (Throwable t)
          {
              logger.warn("Command {} failed after {}: {}", name, Duration.ofNanos(Clock.Global.nanoTime() - startNanos), t.toString()); // don't want stack trace, just type/msg
              throw t;
          }
      }
  }
  