/*
* 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.domain.controller.operations;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.DOMAIN_MODEL;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.FAILURE_DESCRIPTION;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.HOST;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OPERATION_HEADERS;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP_ADDR;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.RESULT;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.concurrent.atomic.AtomicReference;
import org.jboss.as.controller.ModelController;
import org.jboss.as.controller.ModelController.OperationTransaction;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.ProxyController;
import org.jboss.as.controller.client.OperationMessageHandler;
import org.jboss.as.controller.descriptions.DescriptionProvider;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.as.controller.registry.Resource;
import org.jboss.as.domain.controller.DomainController;
import org.jboss.as.domain.controller.UnregisteredHostChannelRegistry;
import org.jboss.dmr.ModelNode;
/**
* Step handler responsible for pushing our master domain model to the remote slave
* as part of the remote slave's registration with this master domain controller.
*
* @author John Bailey
*/
public class ReadMasterDomainModelHandler implements OperationStepHandler, DescriptionProvider {
public static final String OPERATION_NAME = "read-master-domain-model";
public static final String FORCE_DIRECT_HACK = "force-direct-hack";
private final DomainController domainController;
private final UnregisteredHostChannelRegistry registry;
public ReadMasterDomainModelHandler(final DomainController domainController, final UnregisteredHostChannelRegistry registry) {
this.domainController = domainController;
this.registry = registry;
}
public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
//Lock the model here
final Resource root = context.readResourceForUpdate(PathAddress.EMPTY_ADDRESS);
final String hostName = operation.get(HOST).asString();
// Get the list of all resources registered in this model
final List<ModelNode> modelDescription = describeAsNodeList(root);
ModelNode op = new ModelNode();
op.get(OP).set(ApplyRemoteMasterDomainModelHandler.OPERATION_NAME);
//FIXME this makes the op work after boot (i.e. slave connects to restarted master), but does not make the slave resync the servers
op.get(OPERATION_HEADERS, "execute-for-coordinator").set(true);
op.get(OP_ADDR).setEmptyList();
op.get(DOMAIN_MODEL).set(modelDescription);
//TODO get this from somewhere
final ProxyController proxy = registry.popChannelAndCreateProxy(hostName);
final AtomicReference<ModelNode> failedRef = new AtomicReference<ModelNode>();
final AtomicReference<ModelNode> preparedRef = new AtomicReference<ModelNode>();
final AtomicReference<OperationTransaction> txRef = new AtomicReference<OperationTransaction>();
ProxyController.ProxyOperationControl control = new ProxyController.ProxyOperationControl() {
@Override
public void operationFailed(ModelNode response) {
failedRef.set(response);
}
@Override
public void operationPrepared(OperationTransaction transaction, ModelNode result) {
txRef.set(transaction);
preparedRef.set(result);
}
@Override
public void operationCompleted(ModelNode response) {
}
};
proxy.execute(op, OperationMessageHandler.logging, control, null);
if (failedRef.get() != null) {
final ModelNode failed = failedRef.get();
context.getResult().set(failed.get(RESULT));
context.getFailureDescription().set(failed.get(FAILURE_DESCRIPTION));
context.completeStep();
} else {
final ModelNode preparedResult = preparedRef.get();
context.getResult().set(preparedResult.get(RESULT));
if (preparedResult.hasDefined(FAILURE_DESCRIPTION)) {
context.getFailureDescription().set(preparedResult.get(FAILURE_DESCRIPTION));
}
OperationContext.ResultAction resultAction = context.completeStep();
ModelController.OperationTransaction tx = txRef.get();
if (tx != null) {
if (resultAction == OperationContext.ResultAction.KEEP) {
tx.commit();
domainController.registerRemoteHost(proxy);
} else {
tx.rollback();
}
}
}
}
/**
* Describe the model as a list of resources with their address and model, which
* the HC can directly apply to create the model. Although the format might appear
* similar as the operations generated at boot-time this description is only useful
* to create the resource tree and cannot be used to invoke any operation.
*
* @param resource the root resource
* @return the list of resources
*/
static List<ModelNode> describeAsNodeList(final Resource resource) {
final List<ModelNode> list = new ArrayList<ModelNode>();
describe(PathAddress.EMPTY_ADDRESS, resource, list);
return list;
}
static void describe(final PathAddress base, final Resource resource, List<ModelNode> nodes) {
if(resource.isProxy() || resource.isRuntime()) {
return; // ignore runtime and proxies
} else if (base.size() >= 1 && base.getElement(0).getKey().equals(ModelDescriptionConstants.HOST)) {
return; // ignore hosts
}
final ModelNode description = new ModelNode();
description.get("domain-resource-address").set(base.toModelNode());
description.get("domain-resource-model").set(resource.getModel());
nodes.add(description);
for(final String childType : resource.getChildTypes()) {
for(final Resource.ResourceEntry entry : resource.getChildren(childType)) {
describe(base.append(entry.getPathElement()), entry, nodes);
}
}
}
public ModelNode getModelDescription(Locale locale) {
return new ModelNode(); // PRIVATE operation requires no description
}
}