/*
* JBoss, Home of Professional Open Source.
* Copyright 2016, 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.wildfly.extension.core.management;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.MODULE;
import static org.wildfly.extension.core.management.CoreManagementExtension.PROCESS_STATE_LISTENER_PATH;
import java.util.Arrays;
import java.util.Collection;
import java.util.Map;
import org.jboss.as.controller.AbstractAddStepHandler;
import org.jboss.as.controller.AbstractRemoveStepHandler;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.PersistentResourceDefinition;
import org.jboss.as.controller.PropertiesAttributeDefinition;
import org.jboss.as.controller.SimpleAttributeDefinitionBuilder;
import org.jboss.as.controller.capability.RuntimeCapability;
import org.jboss.as.controller.client.helpers.MeasurementUnit;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;
import org.jboss.modules.Module;
import org.jboss.modules.ModuleIdentifier;
import org.wildfly.extension.core.management.client.ProcessStateListener;
/**
* @author <a href="http://jmesnil.net/">Jeff Mesnil</a> (c) 2016 Red Hat inc.
*/
public class ProcessStateListenerResourceDefinition extends PersistentResourceDefinition {
private static final String CLASS = "class";
private static final String PROCESS_STATE_LISTENER_CAPABILITY_NAME = "org.wildfly.extension.core-management.process-state";
static final RuntimeCapability<Void> PROCESS_STATE_LISTENER_CAPABILITY =
RuntimeCapability.Builder.of(PROCESS_STATE_LISTENER_CAPABILITY_NAME, true, ProcessStateListenerService.class).build();
public static final PropertiesAttributeDefinition PROPERTIES = new PropertiesAttributeDefinition.Builder("properties", true)
.setAllowExpression(true)
.setRestartAllServices()
.build();
public static final AttributeDefinition LISTENER_CLASS = SimpleAttributeDefinitionBuilder.create(CLASS, ModelType.STRING, false)
.setAllowExpression(false)
.setRestartAllServices()
.build();
public static final AttributeDefinition LISTENER_MODULE = SimpleAttributeDefinitionBuilder.create(MODULE, ModelType.STRING, false)
.setAllowExpression(false)
.setRestartAllServices()
.build();
public static final AttributeDefinition TIMEOUT = SimpleAttributeDefinitionBuilder.create(ModelDescriptionConstants.TIMEOUT, ModelType.INT, true)
.setAllowExpression(true)
.setDefaultValue(new ModelNode(30))
.setMeasurementUnit(MeasurementUnit.SECONDS)
.setRestartAllServices()
.build();
@Override
public void registerChildren(ManagementResourceRegistration resourceRegistration) {
super.registerChildren(resourceRegistration);
}
private static final AttributeDefinition[] ATTRIBUTES = new AttributeDefinition[] {
LISTENER_CLASS, LISTENER_MODULE, PROPERTIES, TIMEOUT
};
ProcessStateListenerResourceDefinition() {
super(new Parameters(PROCESS_STATE_LISTENER_PATH, CoreManagementExtension.getResourceDescriptionResolver("process-state-listener"))
.setOrderedChild()
.setAddHandler(new ProcessStateListenerResourceDefinition.ProcessStateListenerAddHandler())
.setRemoveHandler(new ProcessStateListenerResourceDefinition.ProcessStateListenerRemoveHandler()));
}
@Override
public Collection<AttributeDefinition> getAttributes() {
return Arrays.asList(ATTRIBUTES);
}
private static class ProcessStateListenerAddHandler extends AbstractAddStepHandler {
ProcessStateListenerAddHandler() {
super(PROCESS_STATE_LISTENER_CAPABILITY, ATTRIBUTES);
}
@Override
protected void performRuntime(OperationContext context, ModelNode operation, ModelNode model) throws OperationFailedException {
super.performRuntime(context, operation, model);
String className = LISTENER_CLASS.resolveModelAttribute(context, model).asString();
String moduleIdentifier = LISTENER_MODULE.resolveModelAttribute(context, model).asString();
ProcessStateListener listener = newInstance(className, moduleIdentifier);
Map<String, String> properties = PROPERTIES.unwrap(context, model);
int timeout = TIMEOUT.resolveModelAttribute(context, model).asInt();
ProcessStateListenerService.install(context.getServiceTarget(),
context.getProcessType(),
context.getRunningMode(), context.getCurrentAddress().getLastElement().getValue(),
listener,
properties,
timeout);
}
@Override
protected boolean requiresRuntime(OperationContext context) {
return super.requiresRuntime(context) || context.getProcessType().isServer();
}
private static ProcessStateListener newInstance(String className, String moduleIdentifier) throws OperationFailedException {
ModuleIdentifier moduleID = ModuleIdentifier.fromString(moduleIdentifier);
final Module module;
try {
module = Module.getContextModuleLoader().loadModule(moduleID);
Class<?> clazz = module.getClassLoader().loadClass(className);
Object instance = clazz.newInstance();
return ProcessStateListener.class.cast(instance);
} catch (Exception e) {
throw new OperationFailedException(e.getMessage(), e);
}
}
}
private static class ProcessStateListenerRemoveHandler extends AbstractRemoveStepHandler {
@Override
protected void performRuntime(OperationContext context, ModelNode operation, ModelNode model) throws OperationFailedException {
context.removeService(ProcessStateListenerService.SERVICE_NAME);
}
}
}