/** Private constructor */
private ProtocolManager() {
super();
conf = FileConfigService.getService();
ev = EventDispatcher.getInstance();
ev.addProducer(Constants.PROTOCOL_MANAGER_PRODUCER_ID);
ev.addProducer(Constants.SENSOR_STATE_PRODUCER_ID);
}
/* (non-Javadoc)
* @see jcu.sal.managers.ManagerFactory#build(org.w3c.dom.Document)
*/
@Override
protected AbstractProtocol build(ProtocolConfiguration config, Identifier id)
throws ComponentInstantiationException {
AbstractProtocol p = null;
String type = config.getType();
ProtocolID i = (ProtocolID) id;
try {
// logger.debug("building AbstractProtocol type: " + type);
String className = PluginList.getProtocolClassName(type);
Class<?>[] params = {ProtocolID.class, ProtocolConfiguration.class};
Constructor<?> c = Class.forName(className).getConstructor(params);
Object[] o = new Object[2];
o[0] = i;
o[1] = config;
// logger.debug("AbstractProtocol config: " + XMLhelper.toString(config));
p = (AbstractProtocol) c.newInstance(o);
// logger.debug("done building protocol "+p.toString());
} catch (Throwable e) {
logger.error("Error in new protocol instanciation.");
e.printStackTrace();
logger.error("XML doc:\n");
logger.error(config.getXMLString());
throw new ComponentInstantiationException("Unable to instantiate component", e);
}
// check if there are other instances of the same type
try {
if (!p.supportsMultipleInstances() && getComponentsOfType(type).size() != 0) {
logger.debug(
"Found another instance of type '"
+ type
+ "' which doesnt support multiple instance, deleting this protocol");
throw new ComponentInstantiationException(
"Found another instance of type '"
+ type
+ "' which doesnt support multiple instances");
}
} catch (NotFoundException e) {
} // no other instances
// Parse the protocol's configuration
try {
p.parseConfig();
} catch (ConfigurationException e1) {
logger.error("Error in the protocol configuration:\n" + e1.getMessage());
// e1.printStackTrace();
throw new ComponentInstantiationException();
}
// save protocol config
conf.addProtocol(config);
ev.queueEvent(
new ProtocolListEvent(
ProtocolListEvent.PROTOCOL_ADDED, i.getName(), Constants.PROTOCOL_MANAGER_PRODUCER_ID));
logger.debug("Created protocol '" + config.getID() + "' - type: " + type);
return p;
}
/* (non-Javadoc)
* @see jcu.sal.managers.ManagerFactory#remove(java.lang.Object)
*/
@Override
protected void remove(AbstractProtocol component) {
ProtocolID pid = component.getID();
// logger.debug("Removing protocol " + pid.toString());
component.remove(this);
/**
* the sensors associated with the protocol must be removed AFTER the protocol otherwise the
* autodetection could try and create them again between the moment we remove them and the
* moment we remove the protocol
*/
SensorManager.getSensorManager().destroyComponents(component.getSensors());
componentRemovable(pid);
ev.queueEvent(
new ProtocolListEvent(
ProtocolListEvent.PROTOCOL_REMOVED,
component.getID().getName(),
Constants.PROTOCOL_MANAGER_PRODUCER_ID));
logger.debug(
"Removed protocol '" + component.getID().getName() + "' - type: " + component.getType());
}