content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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 org.activiti.examples.runtime;
  
  import org.activiti.engine.ActivitiEngineAgenda;
  import org.activiti.engine.ActivitiEngineAgendaFactory;
  import org.activiti.engine.ActivitiException;
  import org.activiti.engine.impl.agenda.DefaultActivitiEngineAgenda;
  import org.activiti.engine.impl.interceptor.CommandContext;
  import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
  
  /**
   * This class implements an factory for generating watchdog agenda
   */
  public class WatchDogAgendaFactory implements ActivitiEngineAgendaFactory {
  
      @Override
      public ActivitiEngineAgenda createAgenda(CommandContext commandContext) {
          return new WatchDogAgenda(new DefaultActivitiEngineAgenda(commandContext));
      }
  
      private static class WatchDogAgenda implements ActivitiEngineAgenda {
  
          private static final int WATCH_DOG_LIMIT = 10;
  
          private final ActivitiEngineAgenda agenda;
          private int counter;
  
          private WatchDogAgenda(ActivitiEngineAgenda agenda) {
              this.agenda = agenda;
          }
  
          @Override
          public boolean isEmpty() {
              return agenda.isEmpty();
          }
  
          @Override
          public Runnable getNextOperation() {
              if (counter < WATCH_DOG_LIMIT) {
                  counter++;
                  return agenda.getNextOperation();
              }
              throw new ActivitiException("WatchDog limit exceeded.");
          }
  
          @Override
          public void planOperation(Runnable operation) {
              agenda.planOperation(operation);
          }
  
          @Override
          public void planContinueProcessOperation(ExecutionEntity execution) {
              agenda.planContinueProcessOperation(execution);
          }
  
          @Override
          public void planContinueProcessSynchronousOperation(ExecutionEntity execution) {
              agenda.planContinueProcessSynchronousOperation(execution);
          }
  
          @Override
          public void planContinueProcessInCompensation(ExecutionEntity execution) {
              agenda.planContinueProcessInCompensation(execution);
          }
  
          @Override
          public void planContinueMultiInstanceOperation(ExecutionEntity execution) {
              agenda.planContinueMultiInstanceOperation(execution);
          }
  
          @Override
          public void planTakeOutgoingSequenceFlowsOperation(ExecutionEntity execution, boolean evaluateConditions) {
              agenda.planTakeOutgoingSequenceFlowsOperation(execution, evaluateConditions);
          }
  
          @Override
          public void planEndExecutionOperation(ExecutionEntity execution) {
              agenda.planEndExecutionOperation(execution);
          }
  
          @Override
          public void planTriggerExecutionOperation(ExecutionEntity execution) {
              agenda.planTriggerExecutionOperation(execution);
          }
  
          @Override
          public void planDestroyScopeOperation(ExecutionEntity execution) {
              agenda.planDestroyScopeOperation(execution);
          }
  
          @Override
          public void planExecuteInactiveBehaviorsOperation() {
              agenda.planExecuteInactiveBehaviorsOperation();
          }
      }
  }
  