/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.protocol.mgmt;
/**
* A {@code ManagementRequestHandler} factory.
*
* @author Emanuel Muckenhuber
*/
public interface ManagementRequestHandlerFactory {
/**
* Try to resolve the request handler for the given header. If an implementation is unable to resolve
* a handler itself, it must complete this method by returning the result of {@code handlers.resolveNext()}.
*
* @param handlers the handlers chain
* @param header the request header
* @return the management request handler
*/
ManagementRequestHandler<?, ?> resolveHandler(RequestHandlerChain handlers, ManagementRequestHeader header);
/**
* A chain of multiple request handler factories, also providing a hook for factories to create new
* active operations or register the local process instance of a remotely initiated active operation.
*/
interface RequestHandlerChain {
/**
* Create a new active operation. This will generate a new operation-id.
*
* @param attachment the optional attachment
* @param <T> the result type
* @param <A> the attachment type
* @return the registered active operation
*/
<T, A> ActiveOperation<T, A> createActiveOperation(A attachment);
/**
* Create a new active operation. This will generate a new operation-id.
*
* @param attachment the optional attachment
* @param callback the completed callback
* @param <T> the result type
* @param <A> the attachment type
* @return the registered active operation
*/
<T, A> ActiveOperation<T, A> createActiveOperation(A attachment, ActiveOperation.CompletedCallback<T> callback);
/**
* Create a new active operation, with a given operation-id obtained from an
* {@link ManagementRequestHeader#getOperationId() incoming request's header}.
*
* @param id the operation-id
* @param attachment the attachment
* @param <T> the result type
* @param <A> the attachment type
* @return the registered active operation
* @throws java.lang.IllegalStateException if an operation with the same id is already registered
*/
<T, A> ActiveOperation<T, A> registerActiveOperation(Integer id, A attachment);
/**
* Create a new active operation, with a given operation-idobtained from an
* {@link ManagementRequestHeader#getOperationId() incoming request's header}.
*
* @param id the operation-id
* @param attachment the attachment
* @param callback the completed callback
* @param <T> the result type
* @param <A> the attachment type
* @return the registered active operation
* @throws java.lang.IllegalStateException if an operation with the same id is already registered
*/
<T, A> ActiveOperation<T, A> registerActiveOperation(Integer id, A attachment, ActiveOperation.CompletedCallback<T> callback);
/**
* Ask the next factory in the chain to resolve the handler.
*
* @return the resolved management request handler
*/
ManagementRequestHandler<?, ?> resolveNext();
}
}