protected void setComponent(DefaultHost host, Component comp) {
// TODO setComponent method in the host?
if (comp instanceof NetLayer) {
host.setNetwork((NetLayer) comp);
} else if (comp instanceof TransLayer) {
host.setTransport((TransLayer) comp);
} else if (comp instanceof OverlayNode) {
host.setOverlayNode((OverlayNode) comp);
} else if (comp instanceof Application) {
host.setApplication((Application) comp);
} else if (comp instanceof ContentStorage) {
host.setContentStorage((DefaultContentStorage) comp);
}
}
/*
* (non-Javadoc)
*
* @see de.tud.kom.p2psim.api.scenario.HostBuilder#parse(org.dom4j.Element,
* de.tud.kom.p2psim.api.scenario.Configurator)
*/
public void parse(Element elem, Configurator config) {
DefaultConfigurator defaultConfigurator = (DefaultConfigurator) config;
// create groups
for (Iterator iter = elem.elementIterator(); iter.hasNext(); ) {
Element groupElem = (Element) iter.next();
String groupID = groupElem.attributeValue(GROUP_ID_TAG);
if (groupID == null) {
throw new IllegalArgumentException(
"Id of host/group " + groupElem.asXML() + " must not be null");
}
// either a group of hosts or a single host (=group with size 1)
int groupSize;
if (groupElem.getName().equals(HOST_TAG)) {
groupSize = 1;
} else if (groupElem.getName().equals(GROUP_TAG)) {
String attributeValue = config.parseValue(groupElem.attributeValue(GROUP_SIZE_TAG));
groupSize = Integer.parseInt(attributeValue);
} else {
throw new IllegalArgumentException("Unexpected tag " + groupElem.getName());
}
List<Host> group = new ArrayList<Host>(groupSize);
// create hosts and instances of specified components for each host
for (int i = 0; i < groupSize; i++) {
DefaultHost host = new DefaultHost();
// initialize properties
DefaultHostProperties hostProperties = new DefaultHostProperties();
host.setProperties(hostProperties);
// minimal information for host properties is the group id
hostProperties.setGroupID(groupID);
// initialize layers and properties
for (Iterator layers = groupElem.elementIterator(); layers.hasNext(); ) {
Element layerElem = (Element) layers.next();
if (layerElem.getName().equals(Configurator.HOST_PROPERTIES_TAG)) {
defaultConfigurator.configureAttributes(hostProperties, layerElem);
} else {
// layer component factory
ComponentFactory layer =
(ComponentFactory) defaultConfigurator.configureComponent(layerElem);
Component comp = layer.createComponent(host);
setComponent(host, comp);
}
}
group.add(host);
}
log.debug("Created a group with " + group.size() + " hosts");
hosts.addAll(group);
groups.put(groupID, group);
}
log.info("CREATED " + hosts.size() + " hosts");
if (hosts.size() != experimentSize) {
log.warn(
"Only "
+ hosts.size()
+ " hosts were specified, though the experiment size was set to "
+ experimentSize);
}
}