/*
    * Copyright © 2012 Eirik Bjornset.
    * 
    * 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 net.grinderscript.dotnet.scriptengine;
  
  import grinderscript.net.core.IGrinderWorker;
  import net.grinder.common.UncheckedGrinderException;
  import net.grinder.scriptengine.ScriptEngineService.WorkerRunnable;
  import net.grinder.scriptengine.ScriptExecutionException;
  import net.grinder.util.Sleeper;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class DotNetWorkerRunnable implements WorkerRunnable {
  
  	private final Logger logger = LoggerFactory
  			.getLogger(DotNetWorkerRunnable.class);
  	
  	private IGrinderWorker underlying;
  
  	public DotNetWorkerRunnable(IGrinderWorker underlying)
  			throws DotNetScriptExecutionException {
  		logger.trace("ctor: Enter, underlying = {}", underlying);
  		this.underlying = underlying;
  		logger.trace("ctor: Exit");
  	}
  
  	@Override
  	public void run() throws ScriptExecutionException {
  		logger.trace("run: Enter");
  		try {
  			underlying.Run();
  		} catch (UncheckedGrinderException e) {
  			if ("Thread has been shut down".equals(e.getMessage())) {
  				throw e;
  			}
  			logger.info("run: Got an UncheckedGrinderException", e);
  		} catch (DotNetCheckedExceptionMarshall marshall) {
  			if (marshall.getCause() instanceof Sleeper.ShutdownException) {
  				throw new DotNetScriptExecutionException(
  						"Shutdown during sleep",
  						(Sleeper.ShutdownException) marshall.getCause());
  			}
  		}
  		logger.trace("run: Exit");
  	}
  
  	@Override
  	public void shutdown() throws ScriptExecutionException {
  		logger.trace("shutdown: Enter");
  		try {
  			underlying.Shutdown();
  		} finally {
  			underlying = null;
  		}
  		logger.trace("shutdown: Exit");
  	}
  
  	IGrinderWorker getUnderlying() {
  		return underlying;
  	}
  }