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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.Tuple2;
import org.apache.flink.api.java.tuple.Tuple5;
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 SketchProcessFunction extends ProcessWindowFunction<Map<String, Object>, Map<String, Object>, Tuple2<String, String>, TimeWindow> {
private static final Log logger = LogFactory.get();
@Override
public void process(Tuple2<String, String> keys, Context context, Iterable<Map<String, Object>> elements, Collector<Map<String, Object>> out) {
Map<String, Object> middleResult = getMiddleResult(keys, elements);
try {
if (middleResult != null) {
out.collect(middleResult);
logger.debug("获取中间聚合结果：{}", middleResult.toString());
}
} catch (Exception e) {
logger.error("获取中间聚合结果失败,middleResult: {}\n{}", middleResult.toString(), e);
}
}
private Map<String, Object> getMiddleResult(Tuple2<String, String> keys, Iterable<Map<String, Object>> elements) {
Tuple5<Long, Long, Long, Long, Long> values = connAggregate(elements);
try {
if (values != null) {
Map<String, Object> result = new LinkedHashMap<>();
result.put("start_time", values.f0);
result.put("end_time", values.f1);
result.put("src_ip", keys.f0);
result.put("dst_ip", keys.f1);
result.put("sessions", values.f2);
result.put("packets", values.f3);
result.put("bytes", values.f4);
return result;
}
} catch (Exception e) {
logger.error("加载中间结果集失败,keys: {} values: {}\n{}", keys, values, e);
}
return null;
}
private Tuple5<Long, Long, Long, Long, Long> connAggregate(Iterable<Map<String, Object>> elements) {
long sessions = 0;
long packets = 0;
long bytes = 0;
long startTime = System.currentTimeMillis() / 1000;
long endTime = System.currentTimeMillis() / 1000;
try {
for (Map<String, Object> newSketchLog : elements) {
sessions += Convert.toLong(newSketchLog.get("sketch_sessions"));
packets += Convert.toLong(newSketchLog.get("sketch_packets"));
bytes += Convert.toLong(newSketchLog.get("sketch_bytes"));
long connStartTimetime = Convert.toLong(newSketchLog.get("sketch_start_time"));
startTime = connStartTimetime < startTime ? connStartTimetime : startTime;
endTime = connStartTimetime > endTime ? connStartTimetime : endTime;
}
return Tuple5.of(startTime, endTime + LOG_AGGREGATE_DURATION, sessions, packets, bytes);
} catch (Exception e) {
logger.error("聚合中间结果集失败 {}", e);
}
return null;
}
}
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