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annotate src/org/dancres/blitz/txn/StoragePersonalityFactory.java @ 35:6f68e94c1fb8 default tip

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Add CondensedStats monitoring utility, equivalent to vmstat
author Dominic Cleal <dominic-cleal@cdo2.com>
date Thu, 05 Aug 2010 11:07:25 +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.txn;
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2
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3 import java.io.File;
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4
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5 import net.jini.config.ConfigurationException;
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6
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7 import org.dancres.blitz.config.StorageModel;
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8 import org.dancres.blitz.config.Persistent;
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9 import org.dancres.blitz.config.TimeBarrierPersistent;
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10 import org.dancres.blitz.config.Transient;
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11 import org.dancres.blitz.config.ConfigurationFactory;
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12
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13 /**
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14 @see org.dancres.blitz.txn.StoragePersonality
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15 */
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16 public class StoragePersonalityFactory {
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17
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18 private static StorageModel STORAGE_MODEL;
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19
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20 private static StoragePersonality STORAGE_PERSONALITY;
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21
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22 static {
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23 try {
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24 STORAGE_MODEL =
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25 ((StorageModel)
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26 ConfigurationFactory.getEntry("storageModel",
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27 StorageModel.class));
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29 String myLogDir = (String)
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30 ConfigurationFactory.getEntry("logDir", String.class);
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31
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32 new File(myLogDir).mkdirs();
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33
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34 if (STORAGE_MODEL instanceof Persistent) {
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35 STORAGE_PERSONALITY =
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36 new PersistentPersonality((Persistent) STORAGE_MODEL,
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37 myLogDir);
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38 } else if (STORAGE_MODEL instanceof Transient) {
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39 STORAGE_PERSONALITY = new TransientPersonality(myLogDir);
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40 } else if (STORAGE_MODEL instanceof TimeBarrierPersistent) {
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41 STORAGE_PERSONALITY =
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42 new TimeBarrierPersonality((TimeBarrierPersistent) STORAGE_MODEL, myLogDir);
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43 } else {
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44 throw new Error("Unrecognised storage personality, fatal: " + STORAGE_MODEL);
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45 }
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46
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47 } catch (ConfigurationException aCE) {
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48 throw new Error("Problem loading configuration", aCE);
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49 }
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50 }
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51
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52 public static StoragePersonality getPersonality() {
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53 return STORAGE_PERSONALITY;
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54 }
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55 }