1、开发算法阈值算法块

src/main/java/com/censoft/flink/transform/AlarmThresholdFunction.java

+package com.censoft.flink.transform;
+
+import com.censoft.flink.domain.AlgorithmPushDto;
+import com.censoft.flink.domain.AlgorithmSceneBasePo;
+import com.censoft.flink.domain.AlgorithmScenePiecePo;
+import com.censoft.flink.domain.AlgorithmScenePieceVariablePo;
+import com.censoft.flink.exception.ParameterTransformException;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
+
+/**
+ * @author 周昊
+ * @desc 报警阈值筛选
+ */
+public class AlarmThresholdFunction implements AlgorithmBaseFilterFunction {
+
+    //threshold 阈值百分比（整数）
+    private final Integer threshold;
+
+    //对应报警间隔 参数KEY
+    private static String thresholdKey = "threshold";
+
+    public AlarmThresholdFunction(Integer threshold) {
+        this.threshold = threshold;
+    }
+
+    public static AlarmThresholdFunction getFilterFunction(AlgorithmSceneBasePo algorithmSceneBasePo, AlgorithmScenePiecePo algorithmScenePiecePo) {
+        //参数准备
+        Optional<AlgorithmScenePieceVariablePo> variablePo = algorithmScenePiecePo.getVariablePos()
+                .stream()
+                .filter(po -> thresholdKey.equals(po.getVariableKey()))
+                .findFirst();
+
+        //判断参数是否存在，如果不存在抛出异常
+        if (!variablePo.isPresent()) {
+            throw new ParameterTransformException();
+        }
+        Integer threshold = Integer.valueOf(variablePo.get().getVariableValue());
+
+        return new AlarmThresholdFunction(threshold);
+    }
+
+    @Override
+    public boolean filter(AlgorithmPushDto algorithmPushDto) {
+        return algorithmPushDto.getResult()
+                .stream()
+                .map(po -> {
+                    String label = po.getLabel();
+                    if (label.contains("_")) {
+                        String thresholdString = label.substring(label.indexOf("_") + 1);
+                        return Integer.valueOf(thresholdString);
+                    } else {
+                        return null;
+                    }
+                }).filter(str -> str != null)
+                .filter(value -> value >= threshold)
+                .findFirst().isPresent();
+    }
+}