Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/disk/BackoffGenerator.java @ 32:243c74d599bf

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author Dan Creswell <dan.creswell@gmail.com>
date Sat, 12 Jun 2010 10:41:47 +0100
parents 3dc0c5604566
children
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3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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1 package org.dancres.blitz.disk;
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2
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3 import java.util.Random;
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4
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5 import java.util.logging.Level;
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6
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7 import net.jini.config.ConfigurationException;
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8
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9 import org.dancres.blitz.config.ConfigurationFactory;
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11 public class BackoffGenerator {
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12 private static final String LOAD_BACKOFF = "loadBackoff";
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14 private static int BACKOFF_BASE;
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15 private static int BACKOFF_JITTER;
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17 static {
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18 try {
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19 int[] myBackoff =
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20 (int[]) ConfigurationFactory.getEntry(LOAD_BACKOFF,
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21 int[].class,
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22 new int[]{50, 50});
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23
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24 BACKOFF_BASE = myBackoff[0];
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25 BACKOFF_JITTER = myBackoff[1];
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26 } catch (ConfigurationException aCE) {
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27 RetryingUpdate.theLogger.log(Level.SEVERE,
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28 "Failed to load backoff config", aCE);
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29 }
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30 }
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31
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32 private static Random theBackoffGenerator = new Random();
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33
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34 public static void pause() {
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35 try {
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36 Thread.sleep((long) (BACKOFF_BASE +
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37 theBackoffGenerator.nextInt(BACKOFF_JITTER)));
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38 } catch (InterruptedException anIE) {
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39 }
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40 }
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41 }