[alerter] 告警处理指标数据，告警表达式计算，内容模版关键字替换

alerter/src/main/java/com/usthe/alert/service/AlertDefineService.java

@@ -5,6 +5,7 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.jpa.domain.Specification;
 
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
@@ -74,4 +75,13 @@ public interface AlertDefineService {
      * @param monitorMap 监控ID-名称 MAP
      */
     void applyBindAlertDefineMonitors(Long alertId, Map<Long, String> monitorMap);
+
+    /**
+     * 查询与此监控ID关联的指定指标组匹配的告警定义
+     * @param monitorId 监控ID
+     * @param app 监控类型
+     * @param metrics 指标组
+     * @return field - define[]
+     */
+    Map<String, List<AlertDefine>> getAlertDefines(long monitorId, String app, String metrics);
 }

alerter/src/main/java/com/usthe/alert/service/impl/AlertDefineServiceImpl.java

@@ -13,6 +13,7 @@ import org.springframework.data.jpa.domain.Specification;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
@@ -84,4 +85,15 @@ public class AlertDefineServiceImpl implements AlertDefineService {
                 .collect(Collectors.toList());
         alertDefineBindDao.saveAll(alertDefineBinds);
     }
+
+    @Override
+    public Map<String, List<AlertDefine>> getAlertDefines(long monitorId, String app, String metrics) {
+        List<AlertDefine> defines = alertDefineDao.queryAlertDefinesByMonitor(monitorId, metrics);
+        if (defines == null || defines.isEmpty()) {
+            return null;
+        }
+        // 将告警阈值定义从告警级别0-3数字升序排序，数字越小告警基本越高，即从最高的告警阈值开始匹配计算
+        return defines.stream().sorted(Comparator.comparing(AlertDefine::getPriority))
+                .collect(Collectors.groupingBy(AlertDefine::getField));
+    }
 }