/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, 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.profileservice.management;
import java.lang.reflect.UndeclaredThrowableException;
import java.util.Arrays;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.ControllerState;
import org.jboss.deployers.spi.management.ContextStateMapper;
import org.jboss.kernel.Kernel;
import org.jboss.kernel.spi.dependency.KernelController;
import org.jboss.kernel.spi.registry.KernelBus;
import org.jboss.kernel.spi.registry.KernelRegistryEntry;
import org.jboss.logging.Logger;
import org.jboss.managed.api.ManagedOperation;
import org.jboss.managed.api.ManagedParameter;
import org.jboss.managed.api.ManagedProperty;
import org.jboss.metatype.api.values.EnumValueSupport;
import org.jboss.metatype.api.values.MetaValue;
import org.jboss.metatype.api.values.MetaValueFactory;
import org.jboss.metatype.spi.values.MetaMapper;
import org.jboss.profileservice.spi.types.ControllerStateMetaType;
/**
* Microcontainer KernelBus runtime component dispatcher.
*
* @author <a href="mailto:ales.justin@jboss.com">Ales Justin</a>
* @author Scott.Stark@jboss.org
* @version $Revision: 88971 $
*/
public class KernelBusRuntimeComponentDispatcher extends AbstractRuntimeComponentDispatcher
{
private static final Logger log = Logger.getLogger(KernelBusRuntimeComponentDispatcher.class);
private KernelBus bus;
private Kernel kernel;
public KernelBusRuntimeComponentDispatcher(Kernel kernel)
{
this(kernel, null);
}
public KernelBusRuntimeComponentDispatcher(Kernel kernel, MetaValueFactory valueFactory)
{
super(valueFactory);
if (kernel == null)
throw new IllegalArgumentException("Null kernel");
this.kernel = kernel;
this.bus = kernel.getBus();
}
/**
* Check kernel and bus.
*/
public void start()
{
if (kernel == null)
throw new IllegalArgumentException("Null kernel");
if (bus == null)
throw new IllegalArgumentException("Null kernel bus");
}
public MetaValue get(Object componentName, String propertyName)
{
ManagedProperty prop = AbstractRuntimeComponentDispatcher.getActiveProperty();
try
{
Object value = bus.get(componentName, propertyName);
MetaValue mvalue = null;
if(value != null)
{
if(prop != null)
{
MetaMapper mapper = prop.getTransientAttachment(MetaMapper.class);
if(mapper != null)
mvalue = mapper.createMetaValue(prop.getMetaType(), value);
else
mvalue = create(value);
}
else
{
mvalue = create(value);
}
}
return mvalue;
}
catch (Throwable t)
{
if(propertyName.equals("state") && prop.getMetaType().equals(ControllerStateMetaType.TYPE))
{
String stateString = getState(componentName);
EnumValueSupport state = new EnumValueSupport(ControllerStateMetaType.TYPE, stateString);
return state;
}
else
{
throw new UndeclaredThrowableException(t, "Failed to get property '" + propertyName + "' on component '" + componentName + "'.");
}
}
}
public void set(Object componentName, String propertyName, MetaValue value)
{
try
{
ManagedProperty prop = AbstractRuntimeComponentDispatcher.getActiveProperty();
Object uvalue = null;
if(prop != null)
{
MetaMapper mapper = prop.getTransientAttachment(MetaMapper.class);
if(mapper != null)
uvalue = mapper.unwrapMetaValue(value);
else
uvalue = unwrap(value);
}
else
{
uvalue = unwrap(value);
}
bus.set(componentName, propertyName, uvalue);
}
catch (Throwable t)
{
throw new UndeclaredThrowableException(t, "Failed to set property '" + propertyName + "' on component '" + componentName + "' to value [" + value + "].");
}
}
public Object invoke(Object componentName, String methodName, MetaValue... param)
{
try
{
ManagedOperation op = AbstractRuntimeComponentDispatcher.getActiveOperation();
String[] sig = new String[param.length];
Object[] args = new Object[param.length];
if(op != null)
{
ManagedParameter[] params = op.getParameters();
if(params != null && params.length == param.length)
{
for(int i=0; i < param.length; i++)
{
ManagedParameter mp = params[i];
MetaMapper<?> mapper = mp.getTransientAttachment(MetaMapper.class);
if(mapper != null)
args[i] = mapper.unwrapMetaValue(param[i]);
else
args[i] = unwrap(param[i]);
//
sig[i] = mp.getMetaType().getTypeName();
}
}
else
{
args = toArguments(param);
sig = toSignature(param);
}
}
else
{
args = toArguments(param);
sig = toSignature(param);
}
// Invoke
Object value = bus.invoke(componentName, methodName, args, sig);
MetaValue mvalue = null;
if (value != null)
{
// Look for a return type MetaMapper
MetaMapper returnTypeMapper = op.getTransientAttachment(MetaMapper.class);
if (returnTypeMapper != null)
mvalue = returnTypeMapper.createMetaValue(op.getReturnType(), value);
else
mvalue = create(value);
}
return mvalue;
}
catch (Throwable t)
{
throw new UndeclaredThrowableException(t, "Failed to invoke method '" + methodName + "' on component '" + componentName + "' with parameters " + Arrays.asList(param) + ".");
}
}
public String getState(Object name)
{
KernelController controller = kernel.getController();
ControllerContext context = controller.getContext(name, null);
if (context == null)
throw new IllegalStateException("Context not installed: " + name);
ControllerState state = context.getState();
return state.getStateString();
}
public <T extends Enum<?>> T mapControllerState(Object name, ContextStateMapper<T> mapper)
{
if(name == null)
throw new IllegalArgumentException("null name");
if(mapper == null)
throw new IllegalArgumentException("null mapper");
KernelController controller = kernel.getController();
ControllerContext context = controller.getContext(name, null);
if (context == null)
throw new IllegalStateException("Context not installed: " + name);
ControllerState requiredState = null;
// FIXME
if(context instanceof KernelRegistryEntry == false)
requiredState = context.getRequiredState();
return mapper.map(context.getState(), requiredState);
}
}