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package com.zdjizhi.etl;
import cn.hutool.core.convert.Convert;
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;
/**
* 去重
*/
public class DnsGraphProcessFunction extends ProcessWindowFunction<Map<String, Object>, Map<String, Object>, Tuple3<String, String, String>, TimeWindow> {
private static final Log logger = LogFactory.get();
@Override
public void process(Tuple3<String, String, String> keys, Context context, Iterable<Map<String, Object>> elements, Collector<Map<String, Object>> out) {
try {
Long tmpTime = 0L;
for (Map<String, Object> log : elements) {
Long startTime = Convert.toLong(log.get("start_time"));
tmpTime = startTime > tmpTime ? startTime : tmpTime;
}
Map newLog = new LinkedHashMap<>();
newLog.put("record_type", keys.f0);
newLog.put("qname", keys.f1);
newLog.put("record", keys.f2);
newLog.put("last_found_time", tmpTime);
out.collect(newLog);
logger.debug("获取中间聚合结果：{}", newLog.toString());
} catch (Exception e) {
logger.error("获取中间聚合结果失败,middleResult: {}", e);
}
}
}
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