EtmMonitorRepository.java

/*
 *
 * Copyright (c) void.fm
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package etm.contrib.integration.jca;

import etm.core.monitor.EtmException;
import etm.core.monitor.EtmMonitor;

import java.util.HashMap;
import java.util.Map;

/**
 * The EtmMonitorRespository keeps track of local EtmMonitor instances. It assumes
 * an EtmMonitor can be loaded statically.
 *
 * @author void.fm
 * @version $Revision$
 * @since 1.2.2
 */
class EtmMonitorRepository {

  private static Map managedMonitors = new HashMap();

  public static void register(String reference, EtmMonitor aMonitor) {
    if (!managedMonitors.containsKey(reference)) {
      managedMonitors.put(reference, aMonitor);
    } else {
      throw new EtmException("Reference " + reference + " already assigned. Ensure that the same jetm-config file is not " +
        "reused accross multiple EtmMonitor instances.");
    }
  }

  public static EtmMonitor deregister(String reference) {
    return (EtmMonitor) managedMonitors.remove(reference);
  }

  public static EtmMonitor getMonitor(String reference) {
    return (EtmMonitor) managedMonitors.get(reference);
  }
}