/*
* 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.clustering.jgroups.subsystem;
import static org.jboss.as.clustering.jgroups.logging.JGroupsLogger.ROOT_LOGGER;
import java.io.IOException;
import java.net.URL;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.jboss.as.clustering.jgroups.logging.JGroupsLogger;
import org.jboss.as.clustering.jgroups.ProtocolDefaults;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceController;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;
import org.jboss.msc.service.ValueService;
import org.jboss.msc.value.Value;
import org.jgroups.conf.ProtocolStackConfigurator;
import org.jgroups.conf.XmlConfigurator;
import org.wildfly.clustering.service.AsynchronousServiceBuilder;
import org.wildfly.clustering.service.Builder;
/**
* Service that provides protocol property defaults per protocol type.
* @author Paul Ferraro
*/
public class ProtocolDefaultsBuilder implements Builder<ProtocolDefaults>, Value<ProtocolDefaults>, ProtocolDefaults {
static final ServiceName SERVICE_NAME = ServiceName.JBOSS.append(JGroupsExtension.SUBSYSTEM_NAME, "defaults");
private static final String DEFAULTS = "jgroups-defaults.xml";
private static ProtocolStackConfigurator load(String resource) throws IllegalStateException {
URL url = find(resource, JGroupsExtension.class.getClassLoader());
ROOT_LOGGER.debugf("Loading JGroups protocol defaults from %s", url.toString());
try {
return XmlConfigurator.getInstance(url);
} catch (IOException e) {
throw new IllegalArgumentException(JGroupsLogger.ROOT_LOGGER.parserFailure(url));
}
}
private static URL find(String resource, ClassLoader... loaders) {
for (ClassLoader loader: loaders) {
if (loader != null) {
URL url = loader.getResource(resource);
if (url != null) {
return url;
}
}
}
throw new IllegalArgumentException(JGroupsLogger.ROOT_LOGGER.notFound(resource));
}
private final String resource;
private final Map<String, Map<String, String>> map = new HashMap<>();
public ProtocolDefaultsBuilder() {
this(DEFAULTS);
}
public ProtocolDefaultsBuilder(String resource) {
this.resource = resource;
}
@Override
public ServiceName getServiceName() {
return SERVICE_NAME;
}
@Override
public ServiceBuilder<ProtocolDefaults> build(ServiceTarget target) {
return new AsynchronousServiceBuilder<>(this.getServiceName(), new ValueService<>(this)).build(target).setInitialMode(ServiceController.Mode.ON_DEMAND);
}
/**
* {@inheritDoc}
* @see org.jboss.msc.value.Value#getValue()
*/
@Override
public ProtocolDefaults getValue() {
ProtocolStackConfigurator configurator = load(ProtocolDefaultsBuilder.this.resource);
for (org.jgroups.conf.ProtocolConfiguration config: configurator.getProtocolStack()) {
this.map.put(config.getProtocolName(), Collections.unmodifiableMap(config.getProperties()));
}
return this;
}
@Override
public Map<String, String> getProperties(String protocol) {
Map<String, String> properties = this.map.get(protocol);
return (properties != null) ? Collections.unmodifiableMap(properties) : Collections.<String, String>emptyMap();
}
}