/*
* Copyright (C) 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.errai.bus.server.io;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.jboss.errai.bus.client.api.base.MessageCallbackFailure;
import org.jboss.errai.bus.client.api.messaging.Message;
import org.jboss.errai.bus.client.api.messaging.MessageCallback;
abstract class MethodBindingCallback implements MessageCallback {
protected void maybeUnwrapAndThrowError(Throwable throwable) throws RuntimeException {
while (throwable instanceof InvocationTargetException && throwable.getCause() != null) {
throwable = throwable.getCause();
}
throw (throwable instanceof RuntimeException) ? (RuntimeException) throwable
: new MessageCallbackFailure(throwable);
}
protected void verifyMethodSignature(final Method method) {
final Class<?>[] parmTypes = method.getParameterTypes();
if (parmTypes.length > 1 || (parmTypes.length == 1 && !Message.class.isAssignableFrom(parmTypes[0]))) {
throw new IllegalStateException("method does not implement signature: " + method.getName() + "("
+ Message.class.getName() + ")");
}
}
}