content: /*
   * Copyright 1999-2025 Alibaba Group Holding Ltd.
   *
   * 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.nacos.ai.config;
  
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.ScheduledThreadPoolExecutor;
  import java.util.concurrent.ThreadPoolExecutor;
  
  import com.alibaba.nacos.ai.index.CachedMcpServerIndex;
  import com.alibaba.nacos.ai.index.McpCacheIndex;
  import com.alibaba.nacos.ai.index.McpServerIndex;
  import com.alibaba.nacos.ai.index.MemoryMcpCacheIndex;
  import com.alibaba.nacos.ai.index.PlainMcpServerIndex;
  import com.alibaba.nacos.config.server.service.ConfigDetailService;
  import com.alibaba.nacos.config.server.service.query.ConfigQueryChainService;
  import com.alibaba.nacos.core.service.NamespaceOperationService;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
  import org.springframework.boot.context.properties.EnableConfigurationProperties;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.context.annotation.Primary;
  
  /**
   * MCP server index configuration class.
   *
   * @author misselvexu
   */
  @Configuration
  @EnableConfigurationProperties(McpCacheIndexProperties.class)
  public class McpServerIndexConfiguration {
      
      private static final Logger LOGGER = LoggerFactory.getLogger(McpServerIndexConfiguration.class);
      
      private final McpCacheIndexProperties cacheProperties;
      
      public McpServerIndexConfiguration(McpCacheIndexProperties cacheProperties) {
          this.cacheProperties = cacheProperties;
      }
      
      /**
       * Create memory cache index Bean.
       */
      @Bean
      @ConditionalOnProperty(name = "nacos.mcp.cache.enabled", havingValue = "true", matchIfMissing = true)
      public McpCacheIndex mcpCacheIndex() {
          LOGGER.info("Creating McpCacheIndex bean with maxSize={}, expireTime={}s, cleanupInterval={}s",
                  cacheProperties.getMaxSize(), cacheProperties.getExpireTimeSeconds(),
                  cacheProperties.getCleanupIntervalSeconds());
          return new MemoryMcpCacheIndex(cacheProperties);
      }
      
      /**
       * Create scheduled task executor Bean.
       */
      @Bean
      @ConditionalOnProperty(name = "nacos.mcp.cache.enabled", havingValue = "true", matchIfMissing = true)
      public ScheduledExecutorService mcpCacheScheduledExecutor() {
          LOGGER.info("Creating ScheduledExecutorService for MCP cache with syncInterval={}s",
                  cacheProperties.getSyncIntervalSeconds());
          // Manually create thread pool, following Alibaba coding standards
          return new ScheduledThreadPoolExecutor(1, r -> {
              Thread t = new Thread(r, "mcp-cache-sync");
              t.setDaemon(true);
              return t;
          }, new ThreadPoolExecutor.CallerRunsPolicy());
      }
      
      /**
       * Create the primary MCP server index Bean when cache is enabled.
       */
      @Bean
      @Primary
      @ConditionalOnProperty(name = "nacos.mcp.cache.enabled", havingValue = "true", matchIfMissing = true)
      public McpServerIndex cachedMcpServerIndex(ConfigDetailService configDetailService,
              NamespaceOperationService namespaceOperationService, ConfigQueryChainService configQueryChainService,
              McpCacheIndex mcpCacheIndex, ScheduledExecutorService mcpCacheScheduledExecutor) {
          LOGGER.info("Creating CachedMcpServerIndex bean with cache enabled");
          return new CachedMcpServerIndex(configDetailService, namespaceOperationService, configQueryChainService,
                  mcpCacheIndex, mcpCacheScheduledExecutor, cacheProperties.isEnabled(),
                  cacheProperties.getSyncIntervalSeconds());
      }
      
      /**
       * Create the primary MCP server index Bean when cache is disabled.
       */
      @Bean
      @Primary
      @ConditionalOnProperty(name = "nacos.mcp.cache.enabled", havingValue = "false")
      public McpServerIndex plainMcpServerIndex(ConfigDetailService configDetailService,
              NamespaceOperationService namespaceOperationService, ConfigQueryChainService configQueryChainService) {
          LOGGER.info("Creating PlainMcpServerIndex bean as cache is disabled");
          return new PlainMcpServerIndex(namespaceOperationService, configDetailService, configQueryChainService);
      }
  } 