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1 package nabble.view.web.template;
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2
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3 import java.util.Map;
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4 import java.util.HashMap;
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5 import nabble.model.Init;
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6 import nabble.model.Site;
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7
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8
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9 final class NamlLogger {
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10 // log size varies between NAML_LOG_SIZE and 2*NAML_LOG_SIZE
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11 private static final int NAML_LOG_SIZE = Init.get("NAML_LOG_SIZE",1000000);
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12
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13 private String old = "";
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14 private final StringBuilder buf = new StringBuilder();
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15
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16 private NamlLogger() {}
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17
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18 synchronized void log(String msg) {
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19 buf.append(msg).append("\r\n");
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20 if( buf.length() >= NAML_LOG_SIZE ) {
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21 old = buf.toString();
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22 buf.setLength(0);
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23 }
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24 }
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25
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26 synchronized String getLog() {
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27 return old + buf;
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28 }
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29
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30 private static final Map<Long,NamlLogger> loggers = new HashMap<Long,NamlLogger>();
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31
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32 static synchronized NamlLogger getLogger(Site site) {
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33 Long id = site.getId();
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34 NamlLogger logger = loggers.get(id);
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35 if( logger == null ) {
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36 logger = new NamlLogger();
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37 loggers.put(id,logger);
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38 }
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39 return logger;
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40 }
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41
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42 static synchronized void removeLogger(Site site) {
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43 loggers.remove(site.getId());
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44 }
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45 }
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