content: /**
   * Copyright (C) 2024 AIDC-AI
   *
   * 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 com.alibaba.agentic.core.flows.service.impl;
  
  import com.alibaba.agentic.core.utils.ApplicationContextUtil;
  import com.alibaba.smart.framework.engine.configuration.InstanceAccessor;
  import com.alibaba.smart.framework.engine.configuration.impl.DefaultInstanceAccessor;
  import com.alibaba.smart.framework.engine.util.ClassUtil;
  import lombok.extern.slf4j.Slf4j;
  import org.springframework.beans.factory.NoSuchBeanDefinitionException;
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  @Slf4j
  public class CustomInstanceAccessService implements InstanceAccessor {
  
      private final InstanceAccessor defaultInstanceAccessor = new DefaultInstanceAccessor();
      private final Map<String, Object> beansContainer = new ConcurrentHashMap<>();
  
      @Override
      public Object access(String classNameOrBeanName) {
          try {
              Object bean = beansContainer.get(classNameOrBeanName);
              if (null != bean) {
                  return bean;
              } else {
                  Class<?> clazz = ClassUtil.getContextClassLoader().loadClass(classNameOrBeanName);
                  bean = ApplicationContextUtil.getBean(clazz);
                  beansContainer.put(classNameOrBeanName, bean);
                  return bean;
              }
          } catch (NoSuchBeanDefinitionException e) {
              log.error("CustomInstanceAccessService bean not exist", e);
              return defaultInstanceAccessor.access(classNameOrBeanName);
          } catch (ClassNotFoundException e) {
              throw new RuntimeException(e);
          }
      }
  }
  