[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/entrance/KafkaMetricsDataDeserializer.java

@@ -0,0 +1,24 @@
+package com.usthe.alert.entrance;
+
+import com.usthe.common.entity.message.CollectRep;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.kafka.common.serialization.Deserializer;
+
+/**
+ * MetricsData的反序列化
+ * @author tom
+ * @date 2021/11/24 17:29
+ */
+@Slf4j
+public class KafkaMetricsDataDeserializer implements Deserializer<CollectRep.MetricsData> {
+
+    @Override
+    public CollectRep.MetricsData deserialize(String topicName, byte[] bytes) {
+        try {
+            return CollectRep.MetricsData.parseFrom(bytes);
+        } catch (Exception e) {
+            log.error(e.getMessage(), e);
+        }
+        return null;
+    }
+}