1
14
15 package com.liferay.portal.servlet.filters.threaddump;
16
17 import com.liferay.portal.servlet.filters.BasePortalFilter;
18 import com.liferay.portal.util.PropsValues;
19
20 import java.util.concurrent.Executors;
21 import java.util.concurrent.ScheduledExecutorService;
22 import java.util.concurrent.ScheduledFuture;
23 import java.util.concurrent.TimeUnit;
24
25 import javax.servlet.FilterChain;
26 import javax.servlet.http.HttpServletRequest;
27 import javax.servlet.http.HttpServletResponse;
28
29
35 public class ThreadDumpFilter extends BasePortalFilter {
36
37 protected void processFilter(
38 HttpServletRequest request, HttpServletResponse response,
39 FilterChain filterChain)
40 throws Exception {
41
42 ScheduledFuture<?> scheduledFuture =
43 _scheduledExecutorService.schedule(
44 _threadDumper, PropsValues.THREAD_DUMP_SPEED_THRESHOLD,
45 TimeUnit.SECONDS);
46
47 try {
48 processFilter(
49 ThreadDumpFilter.class, request, response, filterChain);
50 }
51 finally {
52 scheduledFuture.cancel(true);
53 }
54 }
55
56 private static int _MAX_THREAD_DUMPERS = 5;
57
58 private static ScheduledExecutorService _scheduledExecutorService =
59 Executors.newScheduledThreadPool(_MAX_THREAD_DUMPERS);
60 private static ThreadDumper _threadDumper = new ThreadDumper();
61
62 }