PowerJob的DatabaseMonitorAspect源碼流程
序
本文主要研究一下PowerJob的DatabaseMonitorAspect
DatabaseMonitorAspect
tech/powerjob/server/persistence/monitor/DatabaseMonitorAspect.java
@Slf4j @Aspect @Component @RequiredArgsConstructor public class DatabaseMonitorAspect { private final MonitorService monitorService; @Around("execution(* tech.powerjob.server.persistence.remote.repository..*.*(..))") public Object monitorCoreDB(ProceedingJoinPoint joinPoint) throws Throwable { return wrapperMonitor(joinPoint, DatabaseType.CORE); } @Around("execution(* tech.powerjob.server.persistence.local..*.*(..))") public Object monitorLocalDB(ProceedingJoinPoint joinPoint) throws Throwable { return wrapperMonitor(joinPoint, DatabaseType.LOCAL); } //...... }
DatabaseMonitorAspect攔截了remote和local的repository,然后執(zhí)行wrapperMonitor
wrapperMonitor
private Object wrapperMonitor(ProceedingJoinPoint point, DatabaseType type) throws Throwable { String classNameMini = AOPUtils.parseRealClassName(point); final String methodName = point.getSignature().getName(); DatabaseEvent event = new DatabaseEvent().setType(type) .setServiceName(classNameMini) .setMethodName(methodName) .setStatus(DatabaseEvent.Status.SUCCESS); long startTs = System.currentTimeMillis(); try { final Object ret = point.proceed(); event.setRows(parseEffectRows(ret)); return ret; } catch (Throwable t) { event.setErrorMsg(t.getClass().getSimpleName()).setStatus(DatabaseEvent.Status.FAILED); throw t; } finally { long cost = System.currentTimeMillis() - startTs; monitorService.monitor(event.setCost(cost)); } }
wrapperMonitor主要是構建DatabaseEvent,成功時獲取effectRows,異常時獲取erroMsg,最后計算耗時,執(zhí)行monitorService.monitor
MonitorService
tech/powerjob/server/monitor/MonitorService.java
public interface MonitorService { void monitor(Event event); }
MonitorService定義了monitor方法
PowerJobMonitorService
tech/powerjob/server/monitor/PowerJobMonitorService.java
@Slf4j @Component public class PowerJobMonitorService implements MonitorService { private final List<Monitor> monitors = Lists.newLinkedList(); public PowerJobMonitorService(List<Monitor> monitors) { monitors.forEach(m -> { log.info("[MonitorService] register monitor: {}", m.getClass().getName()); this.monitors.add(m); }); } @Override public void monitor(Event event) { monitors.forEach(m -> m.record(event)); } }
PowerJobMonitorService是實現(xiàn)了MonitorService接口,其monitor方法遍歷monitors,挨個執(zhí)行record方法
Monitor
tech/powerjob/server/monitor/Monitor.java
public interface Monitor { /** * 全局上下文綁定 & 初始化 */ void init(); /** * 記錄監(jiān)控事件 * 請注意該方法務必異步不阻塞!??! * @param event 事件 */ void record(Event event); }
Monitor接口定義了record方法
LogMonitor
tech/powerjob/server/monitor/monitors/LogMonitor.java
@Component public class LogMonitor implements Monitor, ServerInfoAware { /** * server 啟動依賴 DB,DB會被 monitor,因此最初的幾條 log serverInfo 一定為空,在此處簡單防空 */ private ServerInfo serverInfo = new ServerInfo(); private static final String MDC_KEY_SERVER_ID = "serverId"; @Override public void init() { } @Override public void record(Event event) { MDC.put(MDC_KEY_SERVER_ID, String.valueOf(serverInfo.getId())); LoggerFactory.getLogger(event.type()).info(event.message()); } @Override public void setServerInfo(ServerInfo serverInfo) { this.serverInfo = serverInfo; } }
LogMonitor實現(xiàn)了Monitor, ServerInfoAware接口,其record方法通過logger打印event的message
小結
DatabaseMonitorAspect攔截了remote和local的repository,然后執(zhí)行wrapperMonitor;wrapperMonitor主要是構建DatabaseEvent,成功時獲取effectRows,異常時獲取erroMsg,最后計算耗時,執(zhí)行monitorService.monitor;LogMonitor的record方法通過logger打印event的message。
以上就是PowerJob DatabaseMonitorAspect源碼流程的詳細內容,更多關于PowerJob DatabaseMonitorAspect的資料請關注腳本之家其它相關文章!
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