/**
* To make life easier for the user we will figure out the type of {@link StreamListener} the user
* passed and based on that setup the correct stream analyzer etc.
*
* <p>{@inheritDoc}
*/
@SuppressWarnings("unchecked")
@Override
public void addStreamListener(final StreamListener<? extends Packet> listener) {
try {
final Method method = listener.getClass().getMethod("endStream", Stream.class);
final ParameterizedType parameterizedType =
(ParameterizedType) method.getGenericParameterTypes()[0];
final Type[] parameterArgTypes = parameterizedType.getActualTypeArguments();
// TODO: could actually be more.
final Type parameterArgType = parameterArgTypes[0];
final Class<?> parameterArgClass = (Class<?>) parameterArgType;
if (parameterArgClass.equals(SipPacket.class)) {
if (this.sipStreamHandler == null) {
this.sipStreamHandler = new SipStreamHandler(this.framerManager);
}
this.sipStreamHandler.addListener((StreamListener<SipPacket>) listener);
}
} catch (final ArrayIndexOutOfBoundsException e) {
throw new RuntimeException("Unable to figure out the paramterized type", e);
} catch (final SecurityException e) {
throw new RuntimeException(
"Unable to access method information due to security constraints", e);
} catch (final NoSuchMethodException e) {
throw new RuntimeException("The startStream method doesn't exist. Signature changed?", e);
} catch (final ClassCastException e) {
// means that the user had not parameterized the StreamListener
// interface, which means that we cannot actually detect streams.
throw new IllegalArgumentException("The supplied listener has not been parameterized");
}
}
