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/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, 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.server.operations;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP_ADDR;
import org.jboss.as.controller.AbstractWriteAttributeHandler;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.operations.common.ProcessEnvironmentSystemPropertyUpdater;
import org.jboss.dmr.ModelNode;
import org.wildfly.security.manager.WildFlySecurityManager;
/**
* Handles changes to the value of a system property.
*
* @author Brian Stansberry (c) 2011 Red Hat Inc.
*/
public class SystemPropertyValueWriteAttributeHandler extends AbstractWriteAttributeHandler {
private final ProcessEnvironmentSystemPropertyUpdater systemPropertyUpdater;
public SystemPropertyValueWriteAttributeHandler(ProcessEnvironmentSystemPropertyUpdater systemPropertyUpdater, AttributeDefinition valueAttribute) {
super(valueAttribute);
this.systemPropertyUpdater = systemPropertyUpdater;
}
@Override
protected boolean requiresRuntime(OperationContext context) {
return systemPropertyUpdater != null;
}
@Override
protected boolean applyUpdateToRuntime(OperationContext context, ModelNode operation, String attributeName,
ModelNode resolvedValue, ModelNode currentValue, HandbackHolder handbackHolder) throws OperationFailedException {
final String name = PathAddress.pathAddress(operation.get(OP_ADDR)).getLastElement().getValue();
String setValue = resolvedValue.isDefined() ? resolvedValue.asString() : null;
// This method will only be called if systemPropertyUpdater != null (see requiresRuntime())
final boolean applyToRuntime = systemPropertyUpdater.isRuntimeSystemPropertyUpdateAllowed(name, setValue, context.isBooting());
if (applyToRuntime) {
final String oldValue = WildFlySecurityManager.getPropertyPrivileged(name, null);
if (setValue != null) {
WildFlySecurityManager.setPropertyPrivileged(name, setValue);
} else {
WildFlySecurityManager.clearPropertyPrivileged(name);
}
systemPropertyUpdater.systemPropertyUpdated(name, setValue);
handbackHolder.setHandback(new SysPropValue(name, oldValue));
}
return !applyToRuntime;
}
@Override
protected void revertUpdateToRuntime(OperationContext context, ModelNode operation, String attributeName,
ModelNode valueToRestore, ModelNode valueToRevert, SysPropValue handback) throws OperationFailedException {
if (handback != null) {
if (handback.value != null) {
WildFlySecurityManager.setPropertyPrivileged(handback.name, handback.value);
} else {
WildFlySecurityManager.clearPropertyPrivileged(handback.name);
}
systemPropertyUpdater.systemPropertyUpdated(handback.name, handback.value);
}
}
public static class SysPropValue {
private final String name;
private final String value;
private SysPropValue(String name, String value) {
this.name = name;
this.value = value;
}
}
}