org.kuali.common.devops.metadata.function

Class FirstGCTimestampFunction

java.lang.Object

org.kuali.common.devops.metadata.function.FirstGCTimestampFunction

All Implemented Interfaces:

com.google.common.base.Function<String,com.google.common.base.Optional<Long>>

public final class FirstGCTimestampFunction
extends Object
implements com.google.common.base.Function<String,com.google.common.base.Optional<Long>>

Constructor Summary

Constructors

Constructor and Description
FirstGCTimestampFunction()
FirstGCTimestampFunction(String timestampFormat)

Method Summary

Methods

Modifier and Type	Method and Description
com.google.common.base.Optional<Long>	apply(String text)
protected com.google.common.base.Optional<Long>	getFirstGCTimestamp(String text) 1 - Identify the line containing the timestamp 2 - Extract the timestamp from that line 3 - Convert the timestamp into milliseconds
protected com.google.common.base.Optional<Long>	getMillis(String timestamp) Timestamp format -> 2014-01-06T21:23:15.299+0000
protected com.google.common.base.Optional<String>	getTimestamp(String line) Timestamp line format -> 2014-01-06T21:23:15.299+0000: 0.957: [GC
protected com.google.common.base.Optional<String>	getTimestampLine(String text) A HotSpot garbage collection event is always bracketed by {} and contains a timestamp line that starts with the current year.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.google.common.base.Function

equals

Constructor Detail

FirstGCTimestampFunction

public FirstGCTimestampFunction()

FirstGCTimestampFunction

public FirstGCTimestampFunction(String timestampFormat)

Method Detail

apply

public com.google.common.base.Optional<Long> apply(String text)

Specified by:

apply in interface com.google.common.base.Function<String,com.google.common.base.Optional<Long>>

getFirstGCTimestamp

protected com.google.common.base.Optional<Long> getFirstGCTimestamp(String text)

1 - Identify the line containing the timestamp
2 - Extract the timestamp from that line
3 - Convert the timestamp into milliseconds

getTimestampLine

protected com.google.common.base.Optional<String> getTimestampLine(String text)

A HotSpot garbage collection event is always bracketed by {} and contains a timestamp line that starts with the current year. The timestamp line is the only line that starts with an integer. All other lines start with letters.

 {Heap before GC invocations=36 (full 14):
  PSYoungGen      total 644608K, used 320K [0x00000007d5500000, 0x00000007ffe00000, 0x0000000800000000)
   eden space 591360K, 0% used [0x00000007d5500000,0x00000007d5500000,0x00000007f9680000)
   from space 53248K, 0% used [0x00000007fca00000,0x00000007fca50040,0x00000007ffe00000)
   to   space 52736K, 0% used [0x00000007f9680000,0x00000007f9680000,0x00000007fca00000)
  ParOldGen       total 349696K, used 72060K [0x0000000780000000, 0x0000000795580000, 0x00000007d5500000)
   object space 349696K, 20% used [0x0000000780000000,0x000000078465f240,0x0000000795580000)
  PSPermGen       total 93696K, used 71086K [0x0000000770000000, 0x0000000775b80000, 0x0000000780000000)
   object space 93696K, 75% used [0x0000000770000000,0x000000077456b970,0x0000000775b80000)
 2014-02-08T11:27:30.503+0000: 47666.362: [Full GC [PSYoungGen: 320K->0K(644608K)] [ParOldGen: 72060K->72013K(349696K)] 72380K->72013K(994304K) [PSPermGen: 71086K->71080K(90112K)], 0.4259030 secs] [Times: user=0.74 sys=0.00, real=0.43 secs] 
 Heap after GC invocations=36 (full 14):
  PSYoungGen      total 644608K, used 0K [0x00000007d5500000, 0x00000007ffe00000, 0x0000000800000000)
   eden space 591360K, 0% used [0x00000007d5500000,0x00000007d5500000,0x00000007f9680000)
   from space 53248K, 0% used [0x00000007fca00000,0x00000007fca00000,0x00000007ffe00000)
   to   space 52736K, 0% used [0x00000007f9680000,0x00000007f9680000,0x00000007fca00000)
  ParOldGen       total 349696K, used 72013K [0x0000000780000000, 0x0000000795580000, 0x00000007d5500000)
   object space 349696K, 20% used [0x0000000780000000,0x0000000784653628,0x0000000795580000)
  PSPermGen       total 90112K, used 71080K [0x0000000770000000, 0x0000000775800000, 0x0000000780000000)
   object space 90112K, 78% used [0x0000000770000000,0x000000077456a208,0x0000000775800000)
 }
 

getTimestamp

protected com.google.common.base.Optional<String> getTimestamp(String line)

Timestamp line format -> 2014-01-06T21:23:15.299+0000: 0.957: [GC

getMillis

protected com.google.common.base.Optional<Long> getMillis(String timestamp)

Timestamp format -> 2014-01-06T21:23:15.299+0000