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package com.zdjizhi.etl;
import cn.hutool.core.convert.Convert;
import cn.hutool.core.date.DateUtil;
import cn.hutool.log.Log;
import cn.hutool.log.LogFactory;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.streaming.api.functions.windowing.ProcessWindowFunction;
import org.apache.flink.streaming.api.windowing.windows.TimeWindow;
import org.apache.flink.util.Collector;
import java.util.LinkedHashMap;
import java.util.Map;
import static com.zdjizhi.common.FlowWriteConfig.LOG_AGGREGATE_DURATION;
/**
* @author 94976
*/
public class DnsRelationProcessFunction extends ProcessWindowFunction<Map<String, Object>, Map<String, Object>, Tuple3<String, String, String>, TimeWindow> {
private static final Log logger = LogFactory.get();
/**
* 拆分dns_record
* 聚合统计
* 五种：a/aaaa/cname/mx/ns
*
* @param elements
* @return
*/
@Override
public void process(Tuple3<String, String, String> keys, Context context, Iterable<Map<String, Object>> elements, Collector<Map<String, Object>> out) {
try {
long sessions = 0L;
long startTime = DateUtil.currentSeconds();
long endTime = DateUtil.currentSeconds();
for (Map<String, Object> log : elements) {
sessions++;
long logStartTime = Convert.toLong(log.get("start_time"));
startTime = logStartTime < startTime ? logStartTime : startTime;
endTime = logStartTime > endTime ? logStartTime : endTime;
}
Map<String, Object> newDns = new LinkedHashMap<>();
newDns.put("start_time", startTime);
newDns.put("end_time", endTime + LOG_AGGREGATE_DURATION);
newDns.put("record_type", keys.f0);
newDns.put("qname", keys.f1);
newDns.put("record", keys.f2);
newDns.put("sessions", sessions);
out.collect(newDns);
} catch (Exception e) {
logger.error("dns relation 日志聚合失败: {}", e);
}
}
}
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