/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2022, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.classic.model.processor;
  
  import ch.qos.logback.classic.model.ReceiverModel;
  import ch.qos.logback.classic.net.ReceiverBase;
  import ch.qos.logback.classic.net.SocketReceiver;
  import ch.qos.logback.core.Context;
  import ch.qos.logback.core.model.Model;
  import ch.qos.logback.core.model.processor.ModelHandlerBase;
  import ch.qos.logback.core.model.processor.ModelHandlerException;
  import ch.qos.logback.core.model.processor.ModelInterpretationContext;
  import ch.qos.logback.core.util.OptionHelper;
  
  /**
   * A Joran {@link ModelHandler} for a {@link SocketReceiver} configuration.
   *
   * @author Carl Harris
   */
  public class ReceiverModelHandler extends ModelHandlerBase {
  
      private ReceiverBase receiver;
      private boolean inError;
  
      public ReceiverModelHandler(Context context) {
          super(context);
      }
  
      static public ModelHandlerBase makeInstance(Context context, ModelInterpretationContext ic) {
          return new ReceiverModelHandler(context);
      }
  
      @Override
      protected Class<ReceiverModel> getSupportedModelClass() {
          return ReceiverModel.class;
      }
  
      @Override
      public void handle(ModelInterpretationContext mic, Model model) throws ModelHandlerException {
          ReceiverModel receiverModel = (ReceiverModel) model;
          String className = receiverModel.getClassName();
  
          if (OptionHelper.isNullOrEmptyOrAllSpaces(className)) {
              addError("Missing class name for receiver. ");
              inError = true;
              return;
          } else {
              className = mic.getImport(className);
          }
  
          try {
              addInfo("About to instantiate receiver of type [" + className + "]");
  
              receiver = (ReceiverBase) OptionHelper.instantiateByClassName(className, ReceiverBase.class, context);
              receiver.setContext(context);
  
              mic.pushObject(receiver);
          } catch (Exception ex) {
              inError = true;
              addError("Could not create a receiver of type [" + className + "].", ex);
              throw new ModelHandlerException(ex);
          }
  
      }
  
      @Override
      public void postHandle(ModelInterpretationContext mic, Model model) throws ModelHandlerException {
          if (inError) {
              return;
          }
  
          Object o = mic.peekObject();
          if (o != receiver) {
              addWarn("The object at the of the stack is not the receiver pushed earlier.");
          } else {
              mic.popObject();
              addInfo("Registering receiver with context.");
              mic.getContext().register(receiver);
              receiver.start();
  
          }
      }
  }