review512jwy@163.com
10 hours ago
4 changed files with 293 additions and 0 deletions
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package com.dashboard.aws.lambda.entity; |
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public enum AggregationLevel { |
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MIN_30, |
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HOUR, |
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DAY, |
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MONTH, |
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YEAR |
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} |
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package com.dashboard.aws.lambda.handler; |
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import com.amazonaws.services.lambda.runtime.Context; |
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import com.amazonaws.services.lambda.runtime.RequestHandler; |
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import com.dashboard.aws.lambda.entity.AggregationLevel; |
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import com.dashboard.aws.lambda.service.AggregationService; |
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import com.dashboard.aws.lambda.service.MySQLService; |
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import com.dashboard.aws.lambda.util.DateUtil; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import java.time.LocalDateTime; |
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import java.time.ZoneId; |
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import java.util.List; |
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import java.util.Map; |
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public class AggregationHandler implements RequestHandler<Map<String, Object>, String> { |
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private static final Logger logger = LoggerFactory.getLogger(AggregationHandler.class); |
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private final AggregationService aggregationService = new AggregationService(); |
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private final MySQLService mysqlService = new MySQLService(); |
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@Override |
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public String handleRequest(Map<String, Object> event, Context context) { |
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try { |
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LocalDateTime now = LocalDateTime.now(ZoneId.of("Asia/Tokyo")); |
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// LocalDateTime now = LocalDateTime.of(2025, 1, 1, 0, 0, 5);
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List<AggregationLevel> levels = DateUtil.getAggregationLevels(now); |
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logger.info("Aggregation triggered at: {}, levels: {}", now, levels); |
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// 从数据库或配置中取企业列表
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List<Long> companyIds = mysqlService.getActiveCompanyIds(); |
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logger.info("company id list: {}", companyIds); |
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for (Long companyId : companyIds) { |
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for (AggregationLevel level : levels) { |
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logger.info("Start aggregation [company:{}, level:{}]", companyId, level); |
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aggregationService.aggregate(companyId, level, now); |
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} |
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} |
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return "Aggregation finished at: " + now; |
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} catch (Exception e) { |
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logger.error("Aggregation error", e); |
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return "Aggregation error：" + e.getMessage(); |
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} |
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} |
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} |
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package com.dashboard.aws.lambda.service; |
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import com.dashboard.aws.lambda.entity.AggregationLevel; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import java.sql.Connection; |
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import java.sql.DriverManager; |
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import java.sql.PreparedStatement; |
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import java.sql.SQLException; |
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import java.time.LocalDateTime; |
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public class AggregationService { |
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private static final Logger logger = LoggerFactory.getLogger(AggregationService.class); |
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private static final String MYSQL_URL = System.getenv("DB_URL"); |
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private static final String DB_USER = System.getenv("DB_USER"); |
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private static final String DB_PASSWORD = System.getenv("DB_PASSWORD"); |
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private Connection getConnection() throws SQLException { |
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return DriverManager.getConnection(MYSQL_URL, DB_USER, DB_PASSWORD); |
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} |
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public void aggregate(Long companyId, AggregationLevel level, LocalDateTime now) { |
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String sourceTable; |
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String targetTable; |
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String sourceColumn; |
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String timeWhereColumn; |
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switch (level) { |
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case MIN_30 -> { |
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sourceTable = "dashboard_record_accumulate"; |
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targetTable = "dashboard_aggregate_30min"; |
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sourceColumn = "increment_minute"; |
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timeWhereColumn = "upload_at"; |
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} |
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case HOUR -> { |
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sourceTable = "dashboard_aggregate_30min"; |
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targetTable = "dashboard_aggregate_hour"; |
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sourceColumn = "aggregate_value"; |
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timeWhereColumn = "time_start"; |
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} |
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case DAY -> { |
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sourceTable = "dashboard_aggregate_hour"; |
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targetTable = "dashboard_aggregate_day"; |
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sourceColumn = "aggregate_value"; |
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timeWhereColumn = "time_start"; |
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} |
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case MONTH -> { |
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sourceTable = "dashboard_aggregate_day"; |
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targetTable = "dashboard_aggregate_month"; |
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sourceColumn = "aggregate_value"; |
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timeWhereColumn = "time_start"; |
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} |
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case YEAR -> { |
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sourceTable = "dashboard_aggregate_month"; |
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targetTable = "dashboard_aggregate_year"; |
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sourceColumn = "aggregate_value"; |
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timeWhereColumn = "time_start"; |
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} |
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default -> { |
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logger.warn("Unsupported aggregation level: {}", level); |
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return; |
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} |
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} |
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// --- 1) 计算 start/end（东京时区），并计算要写入的 date 字段 ---
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java.time.ZoneId zone = java.time.ZoneId.of("Asia/Tokyo"); |
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java.time.LocalDateTime end; // 区间右开端点（不包含）
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java.time.LocalDateTime start; // 区间起点（包含）
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switch (level) { |
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case MIN_30: |
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// 触发时应该是在 minute == 0 或 30。以当前时间向下取整到 0 或 30。
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int minute = now.getMinute(); |
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int roundedMinute = (minute >= 30) ? 30 : 0; |
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end = now.withMinute(roundedMinute).withSecond(0).withNano(0); |
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// 如果 now 正好在 0/30 分（触发时），end==now; 否则我们仍以向下取整后的 end 为区间结束
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start = end.minusMinutes(30); |
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break; |
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case HOUR: |
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end = now.withMinute(0).withSecond(0).withNano(0); |
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start = end.minusHours(1); |
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break; |
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case DAY: |
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end = now.withHour(0).withMinute(0).withSecond(0).withNano(0); |
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start = end.minusDays(1); |
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break; |
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case MONTH: |
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end = now.withDayOfMonth(1).withHour(0).withMinute(0).withSecond(0).withNano(0); |
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start = end.minusMonths(1); |
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break; |
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case YEAR: |
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end = now.withMonth(1).withDayOfMonth(1).withHour(0).withMinute(0).withSecond(0).withNano(0); |
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start = end.minusYears(1); |
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break; |
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default: |
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logger.warn("Unsupported level for time calc: {}", level); |
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return; |
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} |
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long startMillis = start.atZone(zone).toInstant().toEpochMilli(); |
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long endMillis = end.atZone(zone).toInstant().toEpochMilli(); |
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// 计算写入的 date 字段（基于 end 的“窗口标识时间”）
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int y = end.getYear(); |
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int m = end.getMonthValue(); |
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int d = end.getDayOfMonth(); |
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int h = end.getHour(); |
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int mm = (level == AggregationLevel.MIN_30) ? (end.getMinute() == 0 ? 0 : 30) : end.getMinute(); |
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// 根据级别决定要写入哪些 date 列和参数顺序
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String dateCols; |
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java.util.List<Object> dateValues = new java.util.ArrayList<>(); |
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switch (level) { |
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case MIN_30 -> { |
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dateCols = "date_year, date_month, date_day, date_hour, date_minute"; |
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dateValues.add(y); dateValues.add(m); dateValues.add(d); dateValues.add(h); dateValues.add(mm); |
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} |
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case HOUR -> { |
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dateCols = "date_year, date_month, date_day, date_hour"; |
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dateValues.add(y); dateValues.add(m); dateValues.add(d); dateValues.add(h); |
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} |
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case DAY -> { |
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dateCols = "date_year, date_month, date_day"; |
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dateValues.add(y); dateValues.add(m); dateValues.add(d); |
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} |
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case MONTH -> { |
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dateCols = "date_year, date_month"; |
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dateValues.add(y); dateValues.add(m); |
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} |
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case YEAR -> { |
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dateCols = "date_year"; |
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dateValues.add(y); |
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} |
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default -> { |
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logger.warn("unexpected level"); |
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return; |
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} |
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} |
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String schema = "data_center_dongjian_" + companyId; |
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// --- 2) SQL：用占位符传入 date 字段 + start/end 时间戳（毫秒） ---
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String sql = String.format( |
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"INSERT INTO %s.%s (device_id, aggregate_value, %s, time_start, time_end, aggregated_at) " + |
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"SELECT device_id, SUM(CAST(%s AS DECIMAL(20,6))) AS aggregate_value, %s, ?, ?, ? " + |
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"FROM %s.%s " + |
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"WHERE %s >= ? AND %s < ? " + |
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"GROUP BY device_id", |
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schema, targetTable, dateCols, |
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sourceColumn, |
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// 下面占位符用于 date 列，会被 PreparedStatement 替换（数量与 dateValues.size() 一致）
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String.join(", ", java.util.Collections.nCopies(dateValues.size(), "?")), |
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schema, sourceTable, timeWhereColumn, timeWhereColumn |
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); |
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try (Connection conn = getConnection(); |
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PreparedStatement ps = conn.prepareStatement(sql)) { |
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int idx = 1; |
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for (Object v : dateValues) { |
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if (v instanceof Integer) ps.setInt(idx++, (Integer) v); |
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else if (v instanceof Long) ps.setLong(idx++, (Long) v); |
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else ps.setObject(idx++, v); |
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} |
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ps.setObject(idx++, startMillis); |
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ps.setObject(idx++, endMillis); |
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// aggregated_at
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ps.setObject(idx++, now); |
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ps.setLong(idx++, startMillis); |
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ps.setLong(idx, endMillis); |
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int inserted = ps.executeUpdate(); |
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logger.info("[company:{}][{}] aggregated {} -> rows inserted: {}, start={}, end={}", companyId, level, targetTable, inserted, startMillis, endMillis); |
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} catch (SQLException e) { |
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logger.error("[company:{}][{}] aggregation failed, start={}, end={}", companyId, level, startMillis, endMillis, e); |
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} |
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} |
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} |
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