1 files changed, 72 insertions, 0 deletions
diff --git a/src/main/java/com/zdjizhi/etl/DnsSplitFlatMapFunction.java b/src/main/java/com/zdjizhi/etl/DnsSplitFlatMapFunction.java
new file mode 100644
index 0000000..725978e
--- /dev/null
+++ b/src/main/java/com/zdjizhi/etl/DnsSplitFlatMapFunction.java
@@ -0,0 +1,72 @@
+package com.zdjizhi.etl;
+
+import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.StrUtil;
+import com.zdjizhi.enums.DnsType;
+import org.apache.flink.api.common.functions.RichFlatMapFunction;
+import org.apache.flink.util.Collector;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+
+/**
+ * @author zhq
+ */
+public class DnsSplitFlatMapFunction extends RichFlatMapFunction<Map<String, Object>, Map<String, Object>> {
+
+    private static final Logger logger = LoggerFactory.getLogger(DnsSplitFlatMapFunction.class);
+
+    /**
+     * 拆分dns_record
+     * 五种：a/aaaa/cname/mx/ns
+     *
+     * @return
+     */
+
+    @Override
+    public void flatMap(Map<String, Object> log, Collector<Map<String, Object>> out) {
+
+        try {
+            List<String> dnsA = splitDns(log, "dns_a");
+            List<String> dnsAAAA = splitDns(log, "dns_aaaa");
+            List<String> dnsCname = splitDns(log, "dns_cname");
+            List<String> dnsNs = splitDns(log, "dns_ns");
+            List<String> dnsMx = splitDns(log, "dns_mx");
+            String startTime = StrUtil.toString(log.get("capture_time"));
+            Object qname = log.get("qname");
+
+            getNewDns(qname, startTime, DnsType.A.getType(), dnsA, out);
+            getNewDns(qname, startTime, DnsType.AAAA.getType(), dnsAAAA, out);
+            getNewDns(qname, startTime, DnsType.CNAME.getType(), dnsCname, out);
+            getNewDns(qname, startTime, DnsType.NS.getType(), dnsNs, out);
+            getNewDns(qname, startTime, DnsType.MX.getType(), dnsMx, out);
+
+        } catch (Exception e) {
+            logger.error("dns 原始日志拆分错: {}", e);
+        }
+
+    }
+
+    private void getNewDns(Object qname, String startTime, String type, List<String> dnsList, Collector<Map<String, Object>> out) throws Exception {
+        if (ObjectUtil.isNotEmpty(dnsList)) {
+            for (String record : dnsList) {
+                Map<String, Object> newDns = new LinkedHashMap<>();
+                newDns.put("start_time", startTime);
+                newDns.put("record_type", type);
+                newDns.put("qname", qname);
+                newDns.put("record", record);
+                out.collect(newDns);
+            }
+        }
+    }
+
+    private static List<String> splitDns(Map<String, Object> log, String key) {
+
+        return StrUtil.split(StrUtil.toString(log.get(key)), StrUtil.COMMA);
+    }
+
+}