ApiStatisticsAnalyzer.java
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package com.yoho.trace.anaylzer;
import com.yoho.trace.anaylzer.model.ApiTraceResult;
import com.yoho.trace.anaylzer.model.SortedTrace;
import com.yoho.trace.anaylzer.model.SpanInfo;
import com.yoho.trace.anaylzer.model.SpanResult;
import com.yoho.trace.utils.MD5;
import org.apache.spark.api.java.function.Function2;
import org.apache.spark.api.java.function.PairFlatMapFunction;
import org.apache.spark.api.java.function.PairFunction;
import properties.PropertiesFactory;
import scala.Tuple2;
import java.io.Serializable;
import java.util.*;
/**
* Created by xjipeng on 2017/10/20.
*/
public class ApiStatisticsAnalyzer implements Serializable {
private static final long serialVersionUID = 1011811836438562696L ;
private boolean isOffline = false ;
public ApiStatisticsAnalyzer(boolean isOffline){
this.isOffline = isOffline ;
}
/**
* <traceid, spanList> 映射为 <traceType, sortedSpanList>
*/
public PairFlatMapFunction SortSpanTreeFunc = new PairFlatMapFunction<Tuple2<String, Iterable<SpanInfo>>, String, SortedTrace>() {
@Override
public Iterator<Tuple2<String, SortedTrace>> call(Tuple2<String, Iterable<SpanInfo>> tuple2) throws Exception {
Iterator itor = tuple2._2().iterator();
ArrayList list = new ArrayList();
while (itor.hasNext()) {
list.add(itor.next());
}
//key is md5 (trace link type)
Tuple2<String, SortedTrace> trace = generateTrace(list);
if (trace != null) {
return Arrays.asList(trace).iterator();
}
return (new ArrayList<Tuple2<String, SortedTrace>>()).iterator();
}
} ;
/**
* 把 SortedTrace 转换为 ApiTraceResult 对象
*/
public PairFunction ConvertTraceResultFunc = new PairFunction<Tuple2<String, SortedTrace>, String, ApiTraceResult>() {
@Override
public Tuple2<String, ApiTraceResult> call(Tuple2<String, SortedTrace> trace) throws Exception {
ApiTraceResult result = new ApiTraceResult();
result.setApiName(trace._2().getApi());
result.setCallTimes(1);
result.setTraceMd5(trace._1());
result.setErrorStatus(trace._2().isErrorStatus());
result.setTraceId(trace._2().getTraceid());
List<SpanInfo> spanList = trace._2().getSortSpanList();
List<SpanResult> spanResultList = new ArrayList<SpanResult>();
Iterator itor = spanList.iterator();
while (itor.hasNext()) {
SpanInfo span = (SpanInfo) itor.next();
SpanResult spanResult = new SpanResult(span.getName(), span.getEnd() - span.getBegin(), span.getLevel(),
span.getSpanid(), span.getParent(), span.getSrcService(), span.getDstService(), null, null,span.isErrorStatus());
spanResultList.add(spanResult);
}
result.setSpans(spanResultList);
result.setDuration(trace._2().getDuration());
result.setMaxLatencyTrace(trace._2().getTraceid());
result.setMinLatencyTrace(trace._2().getTraceid());
result.setMaxLatency((int) trace._2().getDuration());
result.setMinLatency((int) trace._2().getDuration());
result.setTraceStartTime(trace._2().getTraceStartTime());
return new Tuple2<String, ApiTraceResult>(trace._1(), result);
}
};
/**
* 合并trace
*/
public Function2 ReduceFunc = new Function2<ApiTraceResult, ApiTraceResult, ApiTraceResult>() {
//reduce 合并同一个种链条
@Override
public ApiTraceResult call(ApiTraceResult v1, ApiTraceResult v2) throws Exception {
ApiTraceResult result = new ApiTraceResult();
result.setApiName(v1.getApiName());
result.setCallTimes(v1.getCallTimes()+v2.getCallTimes());
result.setTraceMd5(v1.getTraceMd5());
result.setDuration( ( v1.getDuration()*v1.getCallTimes() + v2.getDuration()*v2.getCallTimes() ) / result.getCallTimes() );
int size = v1.getSpans().size() ;
for(int i=0; i<size; i++){
long d = (v1.getSpans().get(i).getDuration() * v1.getCallTimes() + v2.getSpans().get(i).getDuration() * v2.getCallTimes() ) / result.getCallTimes() ;
v1.getSpans().get(i).setDuration(d);
}
result.setSpans(v1.getSpans());
if(v1.getMaxLatency() > v2.getMaxLatency() ) {
result.setMaxLatency(v1.getMaxLatency());
result.setMaxLatencyTrace(v1.getMaxLatencyTrace());
}else{
result.setMaxLatency(v2.getMaxLatency());
result.setMaxLatencyTrace(v2.getMaxLatencyTrace());
}
if(v1.getMinLatency() < v2.getMinLatency() ){
result.setMinLatency(v1.getMinLatency());
result.setMinLatencyTrace(v1.getMinLatencyTrace());
}else{
result.setMinLatency(v2.getMinLatency());
result.setMinLatencyTrace(v2.getMinLatencyTrace());
}
result.setPrefex(v1.getPrefex());
return result;
}
};
/**
* 为每个具体的调用链，生成调用链的树形结构，并生成唯一trace link 标识
* @param spanList
* @return
*/
public Tuple2<String, SortedTrace> generateTrace( ArrayList<SpanInfo> spanList ){
//find root
Iterator itor = spanList.iterator() ;
SpanInfo rootSpan = null ;
while(itor.hasNext() ){
rootSpan = (SpanInfo)itor.next() ;
if(rootSpan.getTraceid().equals(rootSpan.getSpanid())){
break;
}
}
if( rootSpan == null ){
return null ;
}
//sort by time and service name
Collections.sort(spanList, new Comparator<Object>() {
public int compare(Object o1, Object o2) {
if (((SpanInfo) o1).getBegin() < ((SpanInfo) o2).getBegin()) {
return -1;
} else if (((SpanInfo) o1).getBegin() == ((SpanInfo) o2).getBegin()) {
return ((SpanInfo) o1).getName().compareToIgnoreCase(((SpanInfo) o2).getName());
}
return 1;
}
});
//build tree
ArrayList<SpanInfo> sortSpanList = new ArrayList<>();
rootSpan.setLevel(0);
rootSpan.setParent(rootSpan.getTraceid());
sortSpanList.add(rootSpan);
recusive(spanList, rootSpan.getSpanid(), sortSpanList , 0);
long duration = rootSpan.getEnd() - rootSpan.getBegin() ;
String api = rootSpan.getName() ;
StringBuilder key = new StringBuilder() ;
Iterator it = sortSpanList.iterator() ;
//判断该treace是否是异常调用链
boolean traceErrorStatus = false;
while(it.hasNext()) {
SpanInfo si = (SpanInfo)it.next();
key.append(si.getName()+"|");
if(si.isErrorStatus()){
traceErrorStatus = true;
}
}
String keyMd5 = MD5.md5(key.toString());
SortedTrace trace = new SortedTrace() ;
trace.setApi(api);
trace.setDuration(duration);
trace.setTraceid(rootSpan.getTraceid());
trace.setSortSpanList(sortSpanList);
trace.setErrorStatus(traceErrorStatus);
//root开始时间当做trace的开始时间
trace.setTraceStartTime(rootSpan.getBegin());
//毫秒转换为 秒，丢失 毫秒数
long beginSec = rootSpan.getReceive()/1000 ;
//秒 转换为 分钟，丢失 秒数
long beginMin = beginSec/60 ;
//转换为小时
long beginHour = beginMin/60 ;
//转换为天
long beginDate = beginHour/24 ;
//还原为每分钟的开始时间, 单位秒
trace.setStartMinute(beginMin*60);
//还原为每天的开始时间，单位秒
trace.setStartDay(beginDate*24*60*60);
if( isOffline ){
//离线分析数据，用天保存
keyMd5 = trace.getStartDay() + "." + keyMd5 ;
}else {
//实时分析数据，用分钟保存
keyMd5 = trace.getStartMinute() + "." + keyMd5;
}
return new Tuple2<>(keyMd5, trace);
}
/**
* 递归查找子调用，拼装为树形结构
* @param spanList
* @param parentSpanid
* @param sortSpanList
* @param count
*/
public void recusive(ArrayList<SpanInfo> spanList, String parentSpanid, ArrayList<SpanInfo> sortSpanList, int count ){
if( count > 100 ) return ;
Iterator itor = spanList.iterator() ;
while(itor.hasNext()){
SpanInfo s = (SpanInfo) itor.next() ;
//如果spanid==parent 表示这是root，不做处理
if( parentSpanid.equals(s.getParent()) && s.getEndpoint().equals("cs") && !s.getSpanid().equals(s.getParent())) {
s.setLevel(count+1);
sortSpanList.add(s);
recusive(spanList, s.getSpanid(), sortSpanList, count+1 ) ;
}
}
}
}