第153集ES建立索引的开销Java实战

/**
 * ES索引开销配置类
 * @author 运维实战
 */
@Configuration
@EnableConfigurationProperties(ESIndexCostProperties.class)
public class ESIndexCostConfig {
    
    @Autowired
    private ESIndexCostProperties properties;
    
    /**
     * ES索引开销服务
     * @return 索引开销服务
     */
    @Bean
    public ESIndexCostService esIndexCostService() {
        return new ESIndexCostService();
    }
    
    /**
     * ES索引开销监控服务
     * @return 索引开销监控服务
     */
    @Bean
    public ESIndexCostMonitorService esIndexCostMonitorService() {
        return new ESIndexCostMonitorService();
    }
    
    /**
     * ES索引开销优化服务
     * @return 索引开销优化服务
     */
    @Bean
    public ESIndexCostOptimizeService esIndexCostOptimizeService() {
        return new ESIndexCostOptimizeService();
    }
    
    private static final Logger logger = LoggerFactory.getLogger(ESIndexCostConfig.class);
}

/**
 * ES索引开销属性配置
 * @author 运维实战
 */
@Data
@ConfigurationProperties(prefix = "elasticsearch.index.cost")
public class ESIndexCostProperties {
    
    /**
     * 是否启用索引开销监控
     */
    private boolean enableCostMonitoring = true;
    
    /**
     * 最大索引大小（GB）
     */
    private double maxIndexSizeGB = 50.0;
    
    /**
     * 索引创建超时时间（毫秒）
     */
    private long indexCreationTimeoutMs = 60000;
    
    /**
     * 索引更新超时时间（毫秒）
     */
    private long indexUpdateTimeoutMs = 30000;
    
    /**
     * 索引删除超时时间（毫秒）
     */
    private long indexDeletionTimeoutMs = 30000;
    
    /**
     * 是否启用索引开销优化
     */
    private boolean enableCostOptimization = true;
    
    /**
     * 是否启用索引压缩
     */
    private boolean enableIndexCompression = true;
    
    /**
     * 压缩算法
     */
    private String compressionAlgorithm = "lz4";
    
    /**
     * 是否启用索引分片优化
     */
    private boolean enableShardOptimization = true;
    
    /**
     * 推荐分片数量
     */
    private int recommendedShardCount = 5;
    
    /**
     * 是否启用索引副本优化
     */
    private boolean enableReplicaOptimization = true;
    
    /**
     * 推荐副本数量
     */
    private int recommendedReplicaCount = 1;
    
    /**
     * 是否启用索引刷新优化
     */
    private boolean enableRefreshOptimization = true;
    
    /**
     * 索引刷新间隔（毫秒）
     */
    private long refreshIntervalMs = 1000;
    
    /**
     * 是否启用监控
     */
    private boolean enableMonitor = true;
    
    /**
     * 监控间隔（毫秒）
     */
    private long monitorInterval = 30000;
}

/**
 * 基础ES索引开销服务
 * @author 运维实战
 */
@Service
public class ESIndexCostService {
    
    @Autowired
    private RestHighLevelClient elasticsearchClient;
    
    @Autowired
    private ESIndexCostProperties properties;
    
    @Autowired
    private ESIndexCostMonitorService esIndexCostMonitorService;
    
    @Autowired
    private ESIndexCostOptimizeService esIndexCostOptimizeService;
    
    private static final Logger logger = LoggerFactory.getLogger(ESIndexCostService.class);
    
    /**
     * 分析索引创建开销
     * @param indexName 索引名称
     * @param mapping 索引映射
     * @param settings 索引设置
     * @return 索引创建开销分析结果
     */
    public ESIndexCostResult analyzeIndexCreationCost(String indexName, Map<String, Object> mapping, Map<String, Object> settings) {
        logger.info("开始分析索引创建开销，索引: {}", indexName);
        
        ESIndexCostResult result = new ESIndexCostResult();
        result.setIndexName(indexName);
        result.setOperationType("CREATE");
        result.setStartTime(System.currentTimeMillis());
        
        try {
            // 获取索引开销优化策略
            ESIndexCostStrategy strategy = esIndexCostOptimizeService.getStrategy("CREATE", mapping, settings);
            
            // 执行索引创建开销分析
            result = executeIndexCreationCostAnalysis(indexName, mapping, settings, strategy);
            
            // 记录索引开销指标
            esIndexCostMonitorService.recordIndexCost(indexName, "CREATE", result.getEstimatedCost());
            
            logger.info("索引创建开销分析完成，索引: {}, 预估开销: {}, 耗时: {}ms", 
                indexName, result.getEstimatedCost(), result.getDuration());
            
            return result;
            
        } catch (Exception e) {
            logger.error("索引创建开销分析异常，索引: {}", indexName, e);
            result.setSuccess(false);
            result.setError("索引创建开销分析异常: " + e.getMessage());
            result.setEndTime(System.currentTimeMillis());
            return result;
        }
    }
    
    /**
     * 分析索引更新开销
     * @param indexName 索引名称
     * @param updateMapping 更新映射
     * @param updateSettings 更新设置
     * @return 索引更新开销分析结果
     */
    public ESIndexCostResult analyzeIndexUpdateCost(String indexName, Map<String, Object> updateMapping, Map<String, Object> updateSettings) {
        logger.info("开始分析索引更新开销，索引: {}", indexName);
        
        ESIndexCostResult result = new ESIndexCostResult();
        result.setIndexName(indexName);
        result.setOperationType("UPDATE");
        result.setStartTime(System.currentTimeMillis());
        
        try {
            // 获取索引开销优化策略
            ESIndexCostStrategy strategy = esIndexCostOptimizeService.getStrategy("UPDATE", updateMapping, updateSettings);
            
            // 执行索引更新开销分析
            result = executeIndexUpdateCostAnalysis(indexName, updateMapping, updateSettings, strategy);
            
            // 记录索引开销指标
            esIndexCostMonitorService.recordIndexCost(indexName, "UPDATE", result.getEstimatedCost());
            
            logger.info("索引更新开销分析完成，索引: {}, 预估开销: {}, 耗时: {}ms", 
                indexName, result.getEstimatedCost(), result.getDuration());
            
            return result;
            
        } catch (Exception e) {
            logger.error("索引更新开销分析异常，索引: {}", indexName, e);
            result.setSuccess(false);
            result.setError("索引更新开销分析异常: " + e.getMessage());
            result.setEndTime(System.currentTimeMillis());
            return result;
        }
    }
    
    /**
     * 分析索引删除开销
     * @param indexName 索引名称
     * @return 索引删除开销分析结果
     */
    public ESIndexCostResult analyzeIndexDeletionCost(String indexName) {
        logger.info("开始分析索引删除开销，索引: {}", indexName);
        
        ESIndexCostResult result = new ESIndexCostResult();
        result.setIndexName(indexName);
        result.setOperationType("DELETE");
        result.setStartTime(System.currentTimeMillis());
        
        try {
            // 获取索引开销优化策略
            ESIndexCostStrategy strategy = esIndexCostOptimizeService.getStrategy("DELETE", null, null);
            
            // 执行索引删除开销分析
            result = executeIndexDeletionCostAnalysis(indexName, strategy);
            
            // 记录索引开销指标
            esIndexCostMonitorService.recordIndexCost(indexName, "DELETE", result.getEstimatedCost());
            
            logger.info("索引删除开销分析完成，索引: {}, 预估开销: {}, 耗时: {}ms", 
                indexName, result.getEstimatedCost(), result.getDuration());
            
            return result;
            
        } catch (Exception e) {
            logger.error("索引删除开销分析异常，索引: {}", indexName, e);
            result.setSuccess(false);
            result.setError("索引删除开销分析异常: " + e.getMessage());
            result.setEndTime(System.currentTimeMillis());
            return result;
        }
    }
    
    /**
     * 分析索引重建开销
     * @param indexName 索引名称
     * @param newMapping 新映射
     * @param newSettings 新设置
     * @return 索引重建开销分析结果
     */
    public ESIndexCostResult analyzeIndexRebuildCost(String indexName, Map<String, Object> newMapping, Map<String, Object> newSettings) {
        logger.info("开始分析索引重建开销，索引: {}", indexName);
        
        ESIndexCostResult result = new ESIndexCostResult();
        result.setIndexName(indexName);
        result.setOperationType("REBUILD");
        result.setStartTime(System.currentTimeMillis());
        
        try {
            // 获取索引开销优化策略
            ESIndexCostStrategy strategy = esIndexCostOptimizeService.getStrategy("REBUILD", newMapping, newSettings);
            
            // 执行索引重建开销分析
            result = executeIndexRebuildCostAnalysis(indexName, newMapping, newSettings, strategy);
            
            // 记录索引开销指标
            esIndexCostMonitorService.recordIndexCost(indexName, "REBUILD", result.getEstimatedCost());
            
            logger.info("索引重建开销分析完成，索引: {}, 预估开销: {}, 耗时: {}ms", 
                indexName, result.getEstimatedCost(), result.getDuration());
            
            return result;
            
        } catch (Exception e) {
            logger.error("索引重建开销分析异常，索引: {}", indexName, e);
            result.setSuccess(false);
            result.setError("索引重建开销分析异常: " + e.getMessage());
            result.setEndTime(System.currentTimeMillis());
            return result;
        }
    }
    
    /**
     * 执行索引创建开销分析
     * @param indexName 索引名称
     * @param mapping 索引映射
     * @param settings 索引设置
     * @param strategy 策略
     * @return 索引创建开销分析结果
     */
    private ESIndexCostResult executeIndexCreationCostAnalysis(String indexName, Map<String, Object> mapping, Map<String, Object> settings, ESIndexCostStrategy strategy) {
        ESIndexCostResult result = new ESIndexCostResult();
        result.setIndexName(indexName);
        result.setOperationType("CREATE");
        result.setStartTime(System.currentTimeMillis());
        
        try {
            // 计算预估开销
            ESIndexCostEstimate estimate = calculateIndexCreationCost(mapping, settings, strategy);
            
            result.setEstimatedCost(estimate.getTotalCost());
            result.setCpuCost(estimate.getCpuCost());
            result.setMemoryCost(estimate.getMemoryCost());
            result.setDiskCost(estimate.getDiskCost());
            result.setNetworkCost(estimate.getNetworkCost());
            result.setTimeCost(estimate.getTimeCost());
            result.setSuccess(true);
            result.setEndTime(System.currentTimeMillis());
            
            return result;
            
        } catch (Exception e) {
            logger.error("执行索引创建开销分析异常，索引: {}", indexName, e);
            result.setSuccess(false);
            result.setError("执行索引创建开销分析异常: " + e.getMessage());
            result.setEndTime(System.currentTimeMillis());
            return result;
        }
    }
    
    /**
     * 执行索引更新开销分析
     * @param indexName 索引名称
     * @param updateMapping 更新映射
     * @param updateSettings 更新设置
     * @param strategy 策略
     * @return 索引更新开销分析结果
     */
    private ESIndexCostResult executeIndexUpdateCostAnalysis(String indexName, Map<String, Object> updateMapping, Map<String, Object> updateSettings, ESIndexCostStrategy strategy) {
        ESIndexCostResult result = new ESIndexCostResult();
        result.setIndexName(indexName);
        result.setOperationType("UPDATE");
        result.setStartTime(System.currentTimeMillis());
        
        try {
            // 计算预估开销
            ESIndexCostEstimate estimate = calculateIndexUpdateCost(updateMapping, updateSettings, strategy);
            
            result.setEstimatedCost(estimate.getTotalCost());
            result.setCpuCost(estimate.getCpuCost());
            result.setMemoryCost(estimate.getMemoryCost());
            result.setDiskCost(estimate.getDiskCost());
            result.setNetworkCost(estimate.getNetworkCost());
            result.setTimeCost(estimate.getTimeCost());
            result.setSuccess(true);
            result.setEndTime(System.currentTimeMillis());
            
            return result;
            
        } catch (Exception e) {
            logger.error("执行索引更新开销分析异常，索引: {}", indexName, e);
            result.setSuccess(false);
            result.setError("执行索引更新开销分析异常: " + e.getMessage());
            result.setEndTime(System.currentTimeMillis());
            return result;
        }
    }
    
    /**
     * 执行索引删除开销分析
     * @param indexName 索引名称
     * @param strategy 策略
     * @return 索引删除开销分析结果
     */
    private ESIndexCostResult executeIndexDeletionCostAnalysis(String indexName, ESIndexCostStrategy strategy) {
        ESIndexCostResult result = new ESIndexCostResult();
        result.setIndexName(indexName);
        result.setOperationType("DELETE");
        result.setStartTime(System.currentTimeMillis());
        
        try {
            // 计算预估开销
            ESIndexCostEstimate estimate = calculateIndexDeletionCost(strategy);
            
            result.setEstimatedCost(estimate.getTotalCost());
            result.setCpuCost(estimate.getCpuCost());
            result.setMemoryCost(estimate.getMemoryCost());
            result.setDiskCost(estimate.getDiskCost());
            result.setNetworkCost(estimate.getNetworkCost());
            result.setTimeCost(estimate.getTimeCost());
            result.setSuccess(true);
            result.setEndTime(System.currentTimeMillis());
            
            return result;
            
        } catch (Exception e) {
            logger.error("执行索引删除开销分析异常，索引: {}", indexName, e);
            result.setSuccess(false);
            result.setError("执行索引删除开销分析异常: " + e.getMessage());
            result.setEndTime(System.currentTimeMillis());
            return result;
        }
    }
    
    /**
     * 执行索引重建开销分析
     * @param indexName 索引名称
     * @param newMapping 新映射
     * @param newSettings 新设置
     * @param strategy 策略
     * @return 索引重建开销分析结果
     */
    private ESIndexCostResult executeIndexRebuildCostAnalysis(String indexName, Map<String, Object> newMapping, Map<String, Object> newSettings, ESIndexCostStrategy strategy) {
        ESIndexCostResult result = new ESIndexCostResult();
        result.setIndexName(indexName);
        result.setOperationType("REBUILD");
        result.setStartTime(System.currentTimeMillis());
        
        try {
            // 计算预估开销
            ESIndexCostEstimate estimate = calculateIndexRebuildCost(newMapping, newSettings, strategy);
            
            result.setEstimatedCost(estimate.getTotalCost());
            result.setCpuCost(estimate.getCpuCost());
            result.setMemoryCost(estimate.getMemoryCost());
            result.setDiskCost(estimate.getDiskCost());
            result.setNetworkCost(estimate.getNetworkCost());
            result.setTimeCost(estimate.getTimeCost());
            result.setSuccess(true);
            result.setEndTime(System.currentTimeMillis());
            
            return result;
            
        } catch (Exception e) {
            logger.error("执行索引重建开销分析异常，索引: {}", indexName, e);
            result.setSuccess(false);
            result.setError("执行索引重建开销分析异常: " + e.getMessage());
            result.setEndTime(System.currentTimeMillis());
            return result;
        }
    }
    
    /**
     * 计算索引创建开销
     * @param mapping 索引映射
     * @param settings 索引设置
     * @param strategy 策略
     * @return 索引创建开销估算
     */
    private ESIndexCostEstimate calculateIndexCreationCost(Map<String, Object> mapping, Map<String, Object> settings, ESIndexCostStrategy strategy) {
        ESIndexCostEstimate estimate = new ESIndexCostEstimate();
        
        // 计算CPU开销
        double cpuCost = calculateCpuCost(mapping, settings, "CREATE");
        estimate.setCpuCost(cpuCost);
        
        // 计算内存开销
        double memoryCost = calculateMemoryCost(mapping, settings, "CREATE");
        estimate.setMemoryCost(memoryCost);
        
        // 计算磁盘开销
        double diskCost = calculateDiskCost(mapping, settings, "CREATE");
        estimate.setDiskCost(diskCost);
        
        // 计算网络开销
        double networkCost = calculateNetworkCost(mapping, settings, "CREATE");
        estimate.setNetworkCost(networkCost);
        
        // 计算时间开销
        double timeCost = calculateTimeCost(mapping, settings, "CREATE");
        estimate.setTimeCost(timeCost);
        
        // 计算总开销
        double totalCost = cpuCost + memoryCost + diskCost + networkCost + timeCost;
        estimate.setTotalCost(totalCost);
        
        return estimate;
    }
    
    /**
     * 计算索引更新开销
     * @param updateMapping 更新映射
     * @param updateSettings 更新设置
     * @param strategy 策略
     * @return 索引更新开销估算
     */
    private ESIndexCostEstimate calculateIndexUpdateCost(Map<String, Object> updateMapping, Map<String, Object> updateSettings, ESIndexCostStrategy strategy) {
        ESIndexCostEstimate estimate = new ESIndexCostEstimate();
        
        // 计算CPU开销
        double cpuCost = calculateCpuCost(updateMapping, updateSettings, "UPDATE");
        estimate.setCpuCost(cpuCost);
        
        // 计算内存开销
        double memoryCost = calculateMemoryCost(updateMapping, updateSettings, "UPDATE");
        estimate.setMemoryCost(memoryCost);
        
        // 计算磁盘开销
        double diskCost = calculateDiskCost(updateMapping, updateSettings, "UPDATE");
        estimate.setDiskCost(diskCost);
        
        // 计算网络开销
        double networkCost = calculateNetworkCost(updateMapping, updateSettings, "UPDATE");
        estimate.setNetworkCost(networkCost);
        
        // 计算时间开销
        double timeCost = calculateTimeCost(updateMapping, updateSettings, "UPDATE");
        estimate.setTimeCost(timeCost);
        
        // 计算总开销
        double totalCost = cpuCost + memoryCost + diskCost + networkCost + timeCost;
        estimate.setTotalCost(totalCost);
        
        return estimate;
    }
    
    /**
     * 计算索引删除开销
     * @param strategy 策略
     * @return 索引删除开销估算
     */
    private ESIndexCostEstimate calculateIndexDeletionCost(ESIndexCostStrategy strategy) {
        ESIndexCostEstimate estimate = new ESIndexCostEstimate();
        
        // 计算CPU开销
        double cpuCost = calculateCpuCost(null, null, "DELETE");
        estimate.setCpuCost(cpuCost);
        
        // 计算内存开销
        double memoryCost = calculateMemoryCost(null, null, "DELETE");
        estimate.setMemoryCost(memoryCost);
        
        // 计算磁盘开销
        double diskCost = calculateDiskCost(null, null, "DELETE");
        estimate.setDiskCost(diskCost);
        
        // 计算网络开销
        double networkCost = calculateNetworkCost(null, null, "DELETE");
        estimate.setNetworkCost(networkCost);
        
        // 计算时间开销
        double timeCost = calculateTimeCost(null, null, "DELETE");
        estimate.setTimeCost(timeCost);
        
        // 计算总开销
        double totalCost = cpuCost + memoryCost + diskCost + networkCost + timeCost;
        estimate.setTotalCost(totalCost);
        
        return estimate;
    }
    
    /**
     * 计算索引重建开销
     * @param newMapping 新映射
     * @param newSettings 新设置
     * @param strategy 策略
     * @return 索引重建开销估算
     */
    private ESIndexCostEstimate calculateIndexRebuildCost(Map<String, Object> newMapping, Map<String, Object> newSettings, ESIndexCostStrategy strategy) {
        ESIndexCostEstimate estimate = new ESIndexCostEstimate();
        
        // 计算CPU开销
        double cpuCost = calculateCpuCost(newMapping, newSettings, "REBUILD");
        estimate.setCpuCost(cpuCost);
        
        // 计算内存开销
        double memoryCost = calculateMemoryCost(newMapping, newSettings, "REBUILD");
        estimate.setMemoryCost(memoryCost);
        
        // 计算磁盘开销
        double diskCost = calculateDiskCost(newMapping, newSettings, "REBUILD");
        estimate.setDiskCost(diskCost);
        
        // 计算网络开销
        double networkCost = calculateNetworkCost(newMapping, newSettings, "REBUILD");
        estimate.setNetworkCost(networkCost);
        
        // 计算时间开销
        double timeCost = calculateTimeCost(newMapping, newSettings, "REBUILD");
        estimate.setTimeCost(timeCost);
        
        // 计算总开销
        double totalCost = cpuCost + memoryCost + diskCost + networkCost + timeCost;
        estimate.setTotalCost(totalCost);
        
        return estimate;
    }
    
    /**
     * 计算CPU开销
     * @param mapping 映射
     * @param settings 设置
     * @param operationType 操作类型
     * @return CPU开销
     */
    private double calculateCpuCost(Map<String, Object> mapping, Map<String, Object> settings, String operationType) {
        // 基于操作类型和复杂度计算CPU开销
        double baseCost = 10.0; // 基础CPU开销
        
        if (mapping != null) {
            baseCost += mapping.size() * 2.0; // 每个字段增加2.0的CPU开销
        }
        
        if (settings != null) {
            baseCost += settings.size() * 1.0; // 每个设置增加1.0的CPU开销
        }
        
        // 根据操作类型调整
        switch (operationType) {
            case "CREATE":
                return baseCost * 1.0;
            case "UPDATE":
                return baseCost * 0.5;
            case "DELETE":
                return baseCost * 0.3;
            case "REBUILD":
                return baseCost * 2.0;
            default:
                return baseCost;
        }
    }
    
    /**
     * 计算内存开销
     * @param mapping 映射
     * @param settings 设置
     * @param operationType 操作类型
     * @return 内存开销
     */
    private double calculateMemoryCost(Map<String, Object> mapping, Map<String, Object> settings, String operationType) {
        // 基于操作类型和复杂度计算内存开销
        double baseCost = 50.0; // 基础内存开销（MB）
        
        if (mapping != null) {
            baseCost += mapping.size() * 10.0; // 每个字段增加10MB内存开销
        }
        
        if (settings != null) {
            baseCost += settings.size() * 5.0; // 每个设置增加5MB内存开销
        }
        
        // 根据操作类型调整
        switch (operationType) {
            case "CREATE":
                return baseCost * 1.0;
            case "UPDATE":
                return baseCost * 0.7;
            case "DELETE":
                return baseCost * 0.2;
            case "REBUILD":
                return baseCost * 1.5;
            default:
                return baseCost;
        }
    }
    
    /**
     * 计算磁盘开销
     * @param mapping 映射
     * @param settings 设置
     * @param operationType 操作类型
     * @return 磁盘开销
     */
    private double calculateDiskCost(Map<String, Object> mapping, Map<String, Object> settings, String operationType) {
        // 基于操作类型和复杂度计算磁盘开销
        double baseCost = 100.0; // 基础磁盘开销（MB）
        
        if (mapping != null) {
            baseCost += mapping.size() * 20.0; // 每个字段增加20MB磁盘开销
        }
        
        if (settings != null) {
            baseCost += settings.size() * 10.0; // 每个设置增加10MB磁盘开销
        }
        
        // 根据操作类型调整
        switch (operationType) {
            case "CREATE":
                return baseCost * 1.0;
            case "UPDATE":
                return baseCost * 0.8;
            case "DELETE":
                return baseCost * 0.1;
            case "REBUILD":
                return baseCost * 2.0;
            default:
                return baseCost;
        }
    }
    
    /**
     * 计算网络开销
     * @param mapping 映射
     * @param settings 设置
     * @param operationType 操作类型
     * @return 网络开销
     */
    private double calculateNetworkCost(Map<String, Object> mapping, Map<String, Object> settings, String operationType) {
        // 基于操作类型和复杂度计算网络开销
        double baseCost = 5.0; // 基础网络开销（MB）
        
        if (mapping != null) {
            baseCost += mapping.size() * 1.0; // 每个字段增加1MB网络开销
        }
        
        if (settings != null) {
            baseCost += settings.size() * 0.5; // 每个设置增加0.5MB网络开销
        }
        
        // 根据操作类型调整
        switch (operationType) {
            case "CREATE":
                return baseCost * 1.0;
            case "UPDATE":
                return baseCost * 0.6;
            case "DELETE":
                return baseCost * 0.2;
            case "REBUILD":
                return baseCost * 1.8;
            default:
                return baseCost;
        }
    }
    
    /**
     * 计算时间开销
     * @param mapping 映射
     * @param settings 设置
     * @param operationType 操作类型
     * @return 时间开销
     */
    private double calculateTimeCost(Map<String, Object> mapping, Map<String, Object> settings, String operationType) {
        // 基于操作类型和复杂度计算时间开销
        double baseCost = 1000.0; // 基础时间开销（毫秒）
        
        if (mapping != null) {
            baseCost += mapping.size() * 100.0; // 每个字段增加100ms时间开销
        }
        
        if (settings != null) {
            baseCost += settings.size() * 50.0; // 每个设置增加50ms时间开销
        }
        
        // 根据操作类型调整
        switch (operationType) {
            case "CREATE":
                return baseCost * 1.0;
            case "UPDATE":
                return baseCost * 0.8;
            case "DELETE":
                return baseCost * 0.5;
            case "REBUILD":
                return baseCost * 3.0;
            default:
                return baseCost;
        }
    }
}

/**
 * ES索引开销结果类
 * @author 运维实战
 */
@Data
public class ESIndexCostResult {
    
    private boolean success;
    private String indexName;
    private String operationType;
    private double estimatedCost;
    private double cpuCost;
    private double memoryCost;
    private double diskCost;
    private double networkCost;
    private double timeCost;
    private String error;
    private long startTime;
    private long endTime;
    
    public ESIndexCostResult() {
        this.success = false;
        this.estimatedCost = 0.0;
        this.cpuCost = 0.0;
        this.memoryCost = 0.0;
        this.diskCost = 0.0;
        this.networkCost = 0.0;
        this.timeCost = 0.0;
    }
    
    /**
     * 获取处理耗时
     * @return 处理耗时（毫秒）
     */
    public long getDuration() {
        return endTime - startTime;
    }
    
    /**
     * 获取总开销
     * @return 总开销
     */
    public double getTotalCost() {
        return estimatedCost;
    }
}

/**
 * ES索引开销策略类
 * @author 运维实战
 */
@Data
public class ESIndexCostStrategy {
    
    private String strategy;
    private String description;
    private String operationType;
    private Map<String, Object> mapping;
    private Map<String, Object> settings;
    private double estimatedCost;
    private long timestamp;
    
    public ESIndexCostStrategy() {
        this.timestamp = System.currentTimeMillis();
    }
    
    /**
     * 获取开销等级
     * @return 开销等级
     */
    public String getCostLevel() {
        if (estimatedCost <= 100) {
            return "LOW";
        } else if (estimatedCost <= 500) {
            return "MEDIUM";
        } else if (estimatedCost <= 1000) {
            return "HIGH";
        } else {
            return "VERY_HIGH";
        }
    }
}

/**
 * ES索引开销估算类
 * @author 运维实战
 */
@Data
public class ESIndexCostEstimate {
    
    private double totalCost;
    private double cpuCost;
    private double memoryCost;
    private double diskCost;
    private double networkCost;
    private double timeCost;
    
    public ESIndexCostEstimate() {
        this.totalCost = 0.0;
        this.cpuCost = 0.0;
        this.memoryCost = 0.0;
        this.diskCost = 0.0;
        this.networkCost = 0.0;
        this.timeCost = 0.0;
    }
    
    /**
     * 获取总开销
     * @return 总开销
     */
    public double getTotalCost() {
        return totalCost;
    }
}

/**
 * ES索引开销监控服务
 * @author 运维实战
 */
@Service
public class ESIndexCostMonitorService {
    
    private final AtomicLong totalIndexCostAnalyses = new AtomicLong(0);
    private final AtomicLong totalSuccessfulAnalyses = new AtomicLong(0);
    private final AtomicLong totalFailedAnalyses = new AtomicLong(0);
    private final AtomicDouble totalEstimatedCost = new AtomicDouble(0.0);
    
    private long lastResetTime = System.currentTimeMillis();
    private final long resetInterval = 300000; // 5分钟重置一次
    
    private static final Logger logger = LoggerFactory.getLogger(ESIndexCostMonitorService.class);
    
    /**
     * 记录索引开销
     * @param indexName 索引名称
     * @param operationType 操作类型
     * @param estimatedCost 预估开销
     */
    public void recordIndexCost(String indexName, String operationType, double estimatedCost) {
        totalIndexCostAnalyses.incrementAndGet();
        totalSuccessfulAnalyses.incrementAndGet();
        totalEstimatedCost.addAndGet(estimatedCost);
        
        logger.debug("记录索引开销: 索引={}, 操作类型={}, 预估开销={}", 
            indexName, operationType, estimatedCost);
    }
    
    /**
     * 获取监控指标
     * @return 监控指标
     */
    public ESIndexCostMetrics getMetrics() {
        // 检查是否需要重置
        if (System.currentTimeMillis() - lastResetTime > resetInterval) {
            resetMetrics();
        }
        
        ESIndexCostMetrics metrics = new ESIndexCostMetrics();
        metrics.setTotalIndexCostAnalyses(totalIndexCostAnalyses.get());
        metrics.setTotalSuccessfulAnalyses(totalSuccessfulAnalyses.get());
        metrics.setTotalFailedAnalyses(totalFailedAnalyses.get());
        metrics.setTotalEstimatedCost(totalEstimatedCost.get());
        metrics.setTimestamp(System.currentTimeMillis());
        
        return metrics;
    }
    
    /**
     * 重置指标
     */
    private void resetMetrics() {
        totalIndexCostAnalyses.set(0);
        totalSuccessfulAnalyses.set(0);
        totalFailedAnalyses.set(0);
        totalEstimatedCost.set(0.0);
        lastResetTime = System.currentTimeMillis();
        
        logger.info("ES索引开销监控指标重置");
    }
    
    /**
     * 定期监控ES索引开销状态
     */
    @Scheduled(fixedRate = 30000) // 每30秒监控一次
    public void monitorESIndexCostStatus() {
        try {
            ESIndexCostMetrics metrics = getMetrics();
            
            logger.info("ES索引开销监控: 总分析次数={}, 成功分析={}, 失败分析={}, 总预估开销={}, 成功率={}%, 平均开销={}", 
                metrics.getTotalIndexCostAnalyses(), metrics.getTotalSuccessfulAnalyses(), 
                metrics.getTotalFailedAnalyses(), String.format("%.2f", metrics.getTotalEstimatedCost()),
                String.format("%.2f", metrics.getSuccessRate()), 
                String.format("%.2f", metrics.getAverageCost()));
            
            // 检查异常情况
            if (metrics.getSuccessRate() < 90) {
                logger.warn("ES索引开销分析成功率过低: {}%", String.format("%.2f", metrics.getSuccessRate()));
            }
            
            if (metrics.getAverageCost() > 1000) {
                logger.warn("平均索引开销过高: {}", String.format("%.2f", metrics.getAverageCost()));
            }
            
        } catch (Exception e) {
            logger.error("ES索引开销状态监控失败", e);
        }
    }
}

/**
 * ES索引开销指标类
 * @author 运维实战
 */
@Data
public class ESIndexCostMetrics {
    
    private long totalIndexCostAnalyses;
    private long totalSuccessfulAnalyses;
    private long totalFailedAnalyses;
    private double totalEstimatedCost;
    private long timestamp;
    
    public ESIndexCostMetrics() {
        this.timestamp = System.currentTimeMillis();
    }
    
    /**
     * 获取成功率
     * @return 成功率
     */
    public double getSuccessRate() {
        if (totalIndexCostAnalyses == 0) return 0.0;
        return (double) totalSuccessfulAnalyses / totalIndexCostAnalyses * 100;
    }
    
    /**
     * 获取失败率
     * @return 失败率
     */
    public double getFailureRate() {
        if (totalIndexCostAnalyses == 0) return 0.0;
        return (double) totalFailedAnalyses / totalIndexCostAnalyses * 100;
    }
    
    /**
     * 获取平均开销
     * @return 平均开销
     */
    public double getAverageCost() {
        if (totalSuccessfulAnalyses == 0) return 0.0;
        return totalEstimatedCost / totalSuccessfulAnalyses;
    }
    
    /**
     * 是否健康
     * @return 是否健康
     */
    public boolean isHealthy() {
        return getSuccessRate() > 90 && getAverageCost() <= 1000;
    }
}

/**
 * ES索引开销优化服务
 * @author 运维实战
 */
@Service
public class ESIndexCostOptimizeService {
    
    @Autowired
    private ESIndexCostProperties properties;
    
    private static final Logger logger = LoggerFactory.getLogger(ESIndexCostOptimizeService.class);
    
    /**
     * 获取索引开销策略
     * @param operationType 操作类型
     * @param mapping 映射
     * @param settings 设置
     * @return 索引开销策略
     */
    public ESIndexCostStrategy getStrategy(String operationType, Map<String, Object> mapping, Map<String, Object> settings) {
        logger.info("获取ES索引开销策略，操作类型: {}", operationType);
        
        ESIndexCostStrategy strategy = new ESIndexCostStrategy();
        strategy.setOperationType(operationType);
        strategy.setMapping(mapping);
        strategy.setSettings(settings);
        strategy.setTimestamp(System.currentTimeMillis());
        
        // 根据操作类型选择策略
        switch (operationType) {
            case "CREATE":
                strategy.setStrategy("CREATE_OPTIMIZED");
                strategy.setDescription("索引创建优化策略");
                strategy.setEstimatedCost(calculateCreateCost(mapping, settings));
                break;
            case "UPDATE":
                strategy.setStrategy("UPDATE_OPTIMIZED");
                strategy.setDescription("索引更新优化策略");
                strategy.setEstimatedCost(calculateUpdateCost(mapping, settings));
                break;
            case "DELETE":
                strategy.setStrategy("DELETE_OPTIMIZED");
                strategy.setDescription("索引删除优化策略");
                strategy.setEstimatedCost(calculateDeleteCost());
                break;
            case "REBUILD":
                strategy.setStrategy("REBUILD_OPTIMIZED");
                strategy.setDescription("索引重建优化策略");
                strategy.setEstimatedCost(calculateRebuildCost(mapping, settings));
                break;
            default:
                strategy.setStrategy("DEFAULT_OPTIMIZED");
                strategy.setDescription("默认优化策略");
                strategy.setEstimatedCost(100.0);
                break;
        }
        
        logger.info("ES索引开销策略确定: 策略={}, 操作类型={}, 预估开销={}, 开销等级={}", 
            strategy.getStrategy(), operationType, String.format("%.2f", strategy.getEstimatedCost()), 
            strategy.getCostLevel());
        
        return strategy;
    }
    
    /**
     * 计算创建开销
     * @param mapping 映射
     * @param settings 设置
     * @return 创建开销
     */
    private double calculateCreateCost(Map<String, Object> mapping, Map<String, Object> settings) {
        double baseCost = 100.0;
        
        if (mapping != null) {
            baseCost += mapping.size() * 10.0;
        }
        
        if (settings != null) {
            baseCost += settings.size() * 5.0;
        }
        
        return baseCost;
    }
    
    /**
     * 计算更新开销
     * @param mapping 映射
     * @param settings 设置
     * @return 更新开销
     */
    private double calculateUpdateCost(Map<String, Object> mapping, Map<String, Object> settings) {
        double baseCost = 50.0;
        
        if (mapping != null) {
            baseCost += mapping.size() * 5.0;
        }
        
        if (settings != null) {
            baseCost += settings.size() * 3.0;
        }
        
        return baseCost;
    }
    
    /**
     * 计算删除开销
     * @return 删除开销
     */
    private double calculateDeleteCost() {
        return 20.0;
    }
    
    /**
     * 计算重建开销
     * @param mapping 映射
     * @param settings 设置
     * @return 重建开销
     */
    private double calculateRebuildCost(Map<String, Object> mapping, Map<String, Object> settings) {
        double baseCost = 200.0;
        
        if (mapping != null) {
            baseCost += mapping.size() * 15.0;
        }
        
        if (settings != null) {
            baseCost += settings.size() * 10.0;
        }
        
        return baseCost;
    }
    
    /**
     * 获取索引优化建议
     * @param operationType 操作类型
     * @param mapping 映射
     * @param settings 设置
     * @return 优化建议
     */
    public ESIndexOptimizationAdvice getOptimizationAdvice(String operationType, Map<String, Object> mapping, Map<String, Object> settings) {
        ESIndexOptimizationAdvice advice = new ESIndexOptimizationAdvice();
        advice.setOperationType(operationType);
        advice.setTimestamp(System.currentTimeMillis());
        
        // 根据操作类型和复杂度提供建议
        if ("CREATE".equals(operationType)) {
            if (mapping != null && mapping.size() > 50) {
                advice.setAdvice("LARGE_MAPPING");
                advice.setDescription("映射字段过多，建议优化字段结构");
                advice.setRecommendedAction("减少不必要的字段，使用嵌套对象");
            } else {
                advice.setAdvice("OPTIMAL_MAPPING");
                advice.setDescription("映射结构合理");
                advice.setRecommendedAction("保持当前结构");
            }
        } else if ("UPDATE".equals(operationType)) {
            advice.setAdvice("INCREMENTAL_UPDATE");
            advice.setDescription("建议使用增量更新");
            advice.setRecommendedAction("分批更新，避免全量重建");
        } else if ("REBUILD".equals(operationType)) {
            advice.setAdvice("CAREFUL_REBUILD");
            advice.setDescription("重建操作开销较大，请谨慎操作");
            advice.setRecommendedAction("在低峰期执行，做好备份");
        }
        
        return advice;
    }
}

/**
 * ES索引优化建议类
 * @author 运维实战
 */
@Data
public class ESIndexOptimizationAdvice {
    
    private String operationType;
    private String advice;
    private String description;
    private String recommendedAction;
    private long timestamp;
    
    public ESIndexOptimizationAdvice() {
        this.timestamp = System.currentTimeMillis();
    }
    
    /**
     * 获取建议等级
     * @return 建议等级
     */
    public String getAdviceLevel() {
        if ("LARGE_MAPPING".equals(advice) || "CAREFUL_REBUILD".equals(advice)) {
            return "HIGH";
        } else if ("INCREMENTAL_UPDATE".equals(advice)) {
            return "MEDIUM";
        } else {
            return "LOW";
        }
    }
}

/**
 * ES索引开销REST控制器
 * @author 运维实战
 */
@RestController
@RequestMapping("/api/elasticsearch/index/cost")
public class ESIndexCostController {
    
    @Autowired
    private ESIndexCostService esIndexCostService;
    
    @Autowired
    private ESIndexCostMonitorService esIndexCostMonitorService;
    
    @Autowired
    private ESIndexCostOptimizeService esIndexCostOptimizeService;
    
    private static final Logger logger = LoggerFactory.getLogger(ESIndexCostController.class);
    
    /**
     * 分析索引创建开销
     * @param request 索引创建开销分析请求
     * @return 索引创建开销分析结果
     */
    @PostMapping("/create")
    public ResponseEntity<ESIndexCostResult> analyzeIndexCreationCost(@RequestBody IndexCreationCostRequest request) {
        try {
            logger.info("接收到索引创建开销分析请求，索引: {}", request.getIndexName());
            
            ESIndexCostResult result = esIndexCostService.analyzeIndexCreationCost(
                request.getIndexName(), request.getMapping(), request.getSettings());
            
            return ResponseEntity.ok(result);
            
        } catch (Exception e) {
            logger.error("索引创建开销分析失败", e);
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
        }
    }
    
    /**
     * 分析索引更新开销
     * @param request 索引更新开销分析请求
     * @return 索引更新开销分析结果
     */
    @PostMapping("/update")
    public ResponseEntity<ESIndexCostResult> analyzeIndexUpdateCost(@RequestBody IndexUpdateCostRequest request) {
        try {
            logger.info("接收到索引更新开销分析请求，索引: {}", request.getIndexName());
            
            ESIndexCostResult result = esIndexCostService.analyzeIndexUpdateCost(
                request.getIndexName(), request.getUpdateMapping(), request.getUpdateSettings());
            
            return ResponseEntity.ok(result);
            
        } catch (Exception e) {
            logger.error("索引更新开销分析失败", e);
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
        }
    }
    
    /**
     * 分析索引删除开销
     * @param request 索引删除开销分析请求
     * @return 索引删除开销分析结果
     */
    @PostMapping("/delete")
    public ResponseEntity<ESIndexCostResult> analyzeIndexDeletionCost(@RequestBody IndexDeletionCostRequest request) {
        try {
            logger.info("接收到索引删除开销分析请求，索引: {}", request.getIndexName());
            
            ESIndexCostResult result = esIndexCostService.analyzeIndexDeletionCost(request.getIndexName());
            
            return ResponseEntity.ok(result);
            
        } catch (Exception e) {
            logger.error("索引删除开销分析失败", e);
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
        }
    }
    
    /**
     * 分析索引重建开销
     * @param request 索引重建开销分析请求
     * @return 索引重建开销分析结果
     */
    @PostMapping("/rebuild")
    public ResponseEntity<ESIndexCostResult> analyzeIndexRebuildCost(@RequestBody IndexRebuildCostRequest request) {
        try {
            logger.info("接收到索引重建开销分析请求，索引: {}", request.getIndexName());
            
            ESIndexCostResult result = esIndexCostService.analyzeIndexRebuildCost(
                request.getIndexName(), request.getNewMapping(), request.getNewSettings());
            
            return ResponseEntity.ok(result);
            
        } catch (Exception e) {
            logger.error("索引重建开销分析失败", e);
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
        }
    }
    
    /**
     * 获取索引开销策略
     * @param operationType 操作类型
     * @param mapping 映射
     * @param settings 设置
     * @return 索引开销策略
     */
    @PostMapping("/strategy")
    public ResponseEntity<ESIndexCostStrategy> getIndexCostStrategy(
            @RequestParam String operationType,
            @RequestBody(required = false) Map<String, Object> mapping,
            @RequestBody(required = false) Map<String, Object> settings) {
        try {
            ESIndexCostStrategy strategy = esIndexCostOptimizeService.getStrategy(operationType, mapping, settings);
            return ResponseEntity.ok(strategy);
        } catch (Exception e) {
            logger.error("获取索引开销策略失败", e);
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
        }
    }
    
    /**
     * 获取索引优化建议
     * @param operationType 操作类型
     * @param mapping 映射
     * @param settings 设置
     * @return 索引优化建议
     */
    @PostMapping("/advice")
    public ResponseEntity<ESIndexOptimizationAdvice> getIndexOptimizationAdvice(
            @RequestParam String operationType,
            @RequestBody(required = false) Map<String, Object> mapping,
            @RequestBody(required = false) Map<String, Object> settings) {
        try {
            ESIndexOptimizationAdvice advice = esIndexCostOptimizeService.getOptimizationAdvice(operationType, mapping, settings);
            return ResponseEntity.ok(advice);
        } catch (Exception e) {
            logger.error("获取索引优化建议失败", e);
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
        }
    }
    
    /**
     * 获取索引开销监控指标
     * @return 索引开销监控指标
     */
    @GetMapping("/metrics")
    public ResponseEntity<ESIndexCostMetrics> getIndexCostMetrics() {
        try {
            ESIndexCostMetrics metrics = esIndexCostMonitorService.getMetrics();
            return ResponseEntity.ok(metrics);
        } catch (Exception e) {
            logger.error("获取索引开销监控指标失败", e);
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
        }
    }
}

/**
 * 索引创建开销分析请求类
 * @author 运维实战
 */
@Data
public class IndexCreationCostRequest {
    
    private String indexName;
    private Map<String, Object> mapping;
    private Map<String, Object> settings;
    
    public IndexCreationCostRequest() {}
    
    public IndexCreationCostRequest(String indexName, Map<String, Object> mapping, Map<String, Object> settings) {
        this.indexName = indexName;
        this.mapping = mapping;
        this.settings = settings;
    }
}

/**
 * 索引更新开销分析请求类
 * @author 运维实战
 */
@Data
public class IndexUpdateCostRequest {
    
    private String indexName;
    private Map<String, Object> updateMapping;
    private Map<String, Object> updateSettings;
    
    public IndexUpdateCostRequest() {}
    
    public IndexUpdateCostRequest(String indexName, Map<String, Object> updateMapping, Map<String, Object> updateSettings) {
        this.indexName = indexName;
        this.updateMapping = updateMapping;
        this.updateSettings = updateSettings;
    }
}

/**
 * 索引删除开销分析请求类
 * @author 运维实战
 */
@Data
public class IndexDeletionCostRequest {
    
    private String indexName;
    
    public IndexDeletionCostRequest() {}
    
    public IndexDeletionCostRequest(String indexName) {
        this.indexName = indexName;
    }
}

/**
 * 索引重建开销分析请求类
 * @author 运维实战
 */
@Data
public class IndexRebuildCostRequest {
    
    private String indexName;
    private Map<String, Object> newMapping;
    private Map<String, Object> newSettings;
    
    public IndexRebuildCostRequest() {}
    
    public IndexRebuildCostRequest(String indexName, Map<String, Object> newMapping, Map<String, Object> newSettings) {
        this.indexName = indexName;
        this.newMapping = newMapping;
        this.newSettings = newSettings;
    }
}

/**
 * ES索引开销注解
 * @author 运维实战
 */
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface ESIndexCost {
    
    /**
     * 索引名称
     */
    String indexName() default "";
    
    /**
     * 操作类型
     */
    String operationType() default "CREATE";
    
    /**
     * 是否启用开销监控
     */
    boolean enableCostMonitoring() default true;
    
    /**
     * 是否启用开销优化
     */
    boolean enableCostOptimization() default true;
    
    /**
     * 最大允许开销
     */
    double maxAllowedCost() default 1000.0;
    
    /**
     * 操作失败时的消息
     */
    String message() default "ES索引开销分析失败，请稍后重试";
    
    /**
     * 操作失败时的HTTP状态码
     */
    int statusCode() default 500;
}