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1 package com.tirsen.nanning.profiler;
2
3 import com.tirsen.nanning.Invocation;
4 import com.tirsen.nanning.MethodInterceptor;
5
6 import java.lang.reflect.Method  ;
7 import java.util.HashMap ;
8 import java.util.Map ;
9
10
11 public class ProfilerInterceptor implements MethodInterceptor {
12 static ThreadLocal threadLocal = new ThreadLocal ();
13
14 private static long minDuration = 0;
15
16 public Object invoke(Invocation invocation) throws Throwable {
17
18 Map methodsStartingTime = (Map ) threadLocal.get();
19 if (methodsStartingTime == null) {
20 methodsStartingTime = new HashMap ();
21 threadLocal.set(methodsStartingTime);
22 }
23 Method method = invocation.getMethod();
24 methodsStartingTime.put(method, new Long (System.currentTimeMillis()));
25 Object result = invocation.invokeNext();
26 long duration = System.currentTimeMillis() - ((Long ) methodsStartingTime.get(method)).longValue();
27 if (duration >= minDuration) ProfilerLogger.getProfilerLogger().log(invocation, duration);
28 return result;
29 }
30
31 public static long getMinDuration() {
32 return minDuration;
33 }
34
35 public static void setMinDuration(long l) {
36 minDuration = l;
37 }
38
39 }
40
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Java API By Example, From Geeks To Geeks.