public Processor getProcessorForNode(String id, String nodeName)
{
    String key = getProcessorKey(id, nodeName);
    if (!processors.containsKey(key)) {
        processors.put(key, new EpochCounter());
    }

    return processors.get(key);
}
 

public Processor getProcessor(String key)
{
    if (!processors.containsKey(key)) {
        processors.put(key, new EpochCounter());
    }

    return processors.get(key);
}
 

public MetricMeta(boolean isCounter, String unit) {
    this.unit = unit;
    if (isCounter) {
        this.counter = new EpochCounter();
    }
}
 

public MetricMeta(boolean isCounter) {
    this.unit = isCounter ? DEFAULT_COUNTER_UNIT : DEFAULT_UNIT;
    if (isCounter) {
        this.counter = new EpochCounter();
    }
}
 

public EpochCounter getCounter() {
    return this.counter;
}
 

private Metric getMetric(Element n) throws ParseException {
	String type = n.getElementsByTagName("type").item(0) != null ? n.getElementsByTagName("type").item(0).getTextContent() : null;
	String ident = n.getElementsByTagName("ident").item(0) != null ? n.getElementsByTagName("ident").item(0).getTextContent() : null;
	String name = n.getElementsByTagName("name").item(0) != null ? n.getElementsByTagName("name").item(0).getTextContent() : null;
	String description = n.getElementsByTagName("description").item(0) != null ? n.getElementsByTagName("description").item(0).getTextContent()
			: null;
	String value = n.getElementsByTagName("value").item(0) != null ? n.getElementsByTagName("value").item(0).getTextContent() : null;
	String flag = n.getElementsByTagName("flag").item(0) != null ? n.getElementsByTagName("flag").item(0).getTextContent() : null;

	StringBuilder key = new StringBuilder();
	key.append("Varnish/");

	// does it have a custom group?
	String group = getGroup(name);

	if (group != null) {
		key.append(group + "/");
	} else if (type != null)
		key.append(type + "/");
	else {
		key.append("main/");

		int pos = name.indexOf("_");
		if (pos != -1) {
			key.append(name.substring(0, pos) + "/");
		}
	}

	if (ident != null)
		key.append(ident + "/");

	key.append(description);

	String actualKey = key.toString();
	if ("a".equals(flag)) {
		if (!epochCounters.containsKey(actualKey)) {
			epochCounters.put(actualKey, new EpochCounter());
		}
		return new Metric(actualKey, getUnitName(name) + "/sec", epochCounters.get(actualKey).process(NumberFormat.getInstance().parse(value)));
	} else {
		return new Metric(actualKey, getUnitName(name), NumberFormat.getInstance().parse(value));
	}
}