org.apache.openejb.server.ServiceManager Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.openejb.server;
import org.apache.openejb.EnvProps;
import org.apache.openejb.assembler.classic.OpenEjbConfiguration;
import org.apache.openejb.assembler.classic.ServiceInfo;
import org.apache.openejb.loader.FileUtils;
import org.apache.openejb.loader.IO;
import org.apache.openejb.loader.SystemInstance;
import org.apache.openejb.monitoring.LocalMBeanServer;
import org.apache.openejb.monitoring.ManagedMBean;
import org.apache.openejb.monitoring.ObjectNameBuilder;
import org.apache.openejb.util.LogCategory;
import org.apache.openejb.util.Logger;
import org.apache.xbean.recipe.ObjectRecipe;
import org.apache.xbean.recipe.Option;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import static org.apache.openejb.util.PropertyPlaceHolderHelper.holdsWithUpdate;
/**
* @version $Rev$ $Date$
* @org.apache.xbean.XBean element="serviceManager"
*/
public abstract class ServiceManager {
static Logger logger = Logger.getInstance(LogCategory.OPENEJB_SERVER, "org.apache.openejb.server.util.resources");
private static ServiceManager manager;
public ServiceManager() {
}
public static synchronized ServiceManager getManager() {
if (manager == null) {
manager = new SimpleServiceManager();
}
return manager;
}
public static synchronized ServiceManager get() {
return manager;
}
protected static synchronized void setServiceManager(final ServiceManager newManager) {
manager = newManager;
}
protected boolean accept(final String serviceName) {
return true;
}
protected List initServers(final Map availableServices)
throws IOException {
final List enabledServers = new ArrayList();
for (final Map.Entry serviceInfo : availableServices.entrySet()) {
final String serviceName = serviceInfo.getKey();
if (!accept(serviceName)) {
continue;
}
final ServerService service = initServer(serviceName, serviceInfo.getValue());
if (service != null) {
enabledServers.add(service);
}
}
return enabledServers;
}
protected ServerService initServer(final String serviceName, final Properties serviceProperties)
throws IOException {
final DiscoveryRegistry registry = SystemInstance.get().getComponent(DiscoveryRegistry.class);
final OpenEjbConfiguration conf = SystemInstance.get().getComponent(OpenEjbConfiguration.class);
logger.debug("Processing ServerService(id=" + serviceName + ")");
overrideProperties(serviceName, serviceProperties);
serviceProperties.setProperty("name", serviceName);
if (conf != null && conf.facilities != null) {
final ServiceInfo info = new ServiceInfo();
info.className = ((Class) serviceProperties.get(ServerService.class)).getName();
info.service = "ServerService";
info.id = serviceName;
info.properties = serviceProperties;
conf.facilities.services.add(info);
}
final boolean enabled = isEnabled(serviceProperties);
logger.debug("Found ServerService(id=" + serviceName + ", disabled=" + (!enabled) + ")");
if (enabled) {
final Class serviceClass = (Class) serviceProperties.get(ServerService.class);
logger.info("Creating ServerService(id=" + serviceName + ")");
// log all properties on debug
if (logger.isDebugEnabled()) {
for (final Map.Entry entry : serviceProperties.entrySet()) {
logger.debug(entry.getKey() + " = " + entry.getValue());
}
}
try {
// Create Service
ServerService service;
ObjectRecipe recipe = new ObjectRecipe(serviceClass);
try {
// Do not import. This class is not available in xbean-reflect-3.3
if (org.apache.xbean.recipe.ReflectionUtil.findStaticFactory(serviceClass, "createServerService", null, null) != null) {
recipe = new ObjectRecipe(serviceClass, "createServerService");
}
} catch (final Throwable e) {
//Ignore
}
recipe.allow(Option.CASE_INSENSITIVE_PROPERTIES);
recipe.allow(Option.IGNORE_MISSING_PROPERTIES);
service = (ServerService) recipe.create(serviceClass.getClassLoader());
if (!(service instanceof SelfManaging)) {
service = manage(serviceName, serviceProperties, service);
}
service.init(serviceProperties);
if (service instanceof DiscoveryAgent) {
final DiscoveryAgent agent = (DiscoveryAgent) service;
registry.addDiscoveryAgent(agent);
}
if (LocalMBeanServer.isJMXActive()) {
final MBeanServer server = LocalMBeanServer.get();
register(serviceName, service, server);
}
return service;
} catch (final Throwable t) {
t.printStackTrace();
logger.error("service.instantiation.err", t, serviceClass.getName(), t.getClass().getName(), t.getMessage());
}
}
return null;
}
protected static ObjectName getObjectName(final String serviceName) {
final ObjectNameBuilder jmxName = new ObjectNameBuilder("openejb");
jmxName.set("type", "ServerService");
jmxName.set("name", serviceName);
return jmxName.build();
}
public static void register(final String serviceName, final ServerService service, final MBeanServer server) {
try {
final ObjectName on = getObjectName(serviceName);
if (server.isRegistered(on)) {
server.unregisterMBean(on);
}
server.registerMBean(new ManagedMBean(service), on);
} catch (final Exception e) {
logger.error("Unable to register MBean ", e);
}
}
public static ServerService manage(final String serviceName, final Properties serviceProperties, ServerService service) {
service = new NamedService(service, serviceName);
service = new ServiceStats(service);
service = new ServiceLogger(service);
service = new ServicePool(service, serviceProperties);
service = new ServiceAccessController(service);
service = new ServiceDaemon(service);
return service;
}
private void overrideProperties(final String serviceName, final Properties serviceProperties) throws IOException {
final SystemInstance systemInstance = SystemInstance.get();
final FileUtils base = systemInstance.getBase();
// Override with file from conf dir
final File conf = base.getDirectory("conf");
if (conf.exists()) {
final String legacy = System.getProperty("openejb.conf.schema.legacy");
boolean legacySchema = Boolean.parseBoolean((null != legacy ? legacy : "false"));
if (null == legacy) {
//Legacy is not configured either way, so make an educated guess.
//If we find at least 2 known service.properties files then assume legacy
final File[] files = conf.listFiles(new FilenameFilter() {
@Override
public boolean accept(final File dir, String name) {
name = name.toLowerCase();
return name.equals("ejbd.properties")
|| name.equals("ejbds.properties")
|| name.equals("admin.properties")
|| name.equals("httpejbd.properties");
}
});
if (null != files && files.length > 1) {
legacySchema = true;
}
}
addProperties(conf, legacySchema, new File(conf, serviceName + ".properties"), serviceProperties, true);
addProperties(conf, legacySchema, new File(conf, SystemInstance.get().currentProfile() + "." + serviceName + ".properties"), serviceProperties, false);
}
holdsWithUpdate(serviceProperties);
// Override with system properties
final String prefix = serviceName + ".";
final Properties sysProps = new Properties(System.getProperties());
sysProps.putAll(systemInstance.getProperties());
for (final Map.Entry entry : sysProps.entrySet()) {
final Map.Entry entry1 = (Map.Entry) entry;
final Object value = entry1.getValue();
String key = (String) entry1.getKey();
if (value instanceof String && key.startsWith(prefix)) {
key = key.replaceFirst(prefix, "");
serviceProperties.setProperty(key, (String) value);
}
}
}
private void addProperties(final File conf, final boolean legacySchema, final File path, final Properties fullProps, final boolean tryToDump) throws IOException {
File serviceConfig = path;
if (!serviceConfig.exists()) {
serviceConfig = new File(conf, (legacySchema ? "" : "conf.d/") + serviceConfig.getName());
if (legacySchema) {
logger.info("Using legacy configuration path for new service: " + serviceConfig);
}
}
final Properties props = new Properties();
if (serviceConfig.exists()) {
IO.readProperties(serviceConfig, props);
} else if (tryToDump) {
final File confD = serviceConfig.getParentFile();
if (!confD.exists() && !confD.mkdirs()) {
logger.warning("Failed to create " + serviceConfig.getPath());
}
if (confD.exists()) {
if (EnvProps.extractConfigurationFiles()) {
final String rawPropsContent = (String) fullProps.get(Properties.class);
if (rawPropsContent != null) {
IO.copy(IO.read(rawPropsContent), serviceConfig);
}
} else {
props.put("disabled", "true");
}
}
}
fullProps.putAll(props);
}
public static boolean isEnabled(final Properties props) {
// if it should be started, continue
final String disabled = props.getProperty("disabled", "");
return !(disabled.equalsIgnoreCase("yes") || disabled.equalsIgnoreCase("true"));
}
abstract public void init() throws Exception;
public final void start() throws ServiceException {
start(true);
}
/**
* Start the services managed by this instance.
*
* Services should not be started if {@link #stop()} has already been called,
* in which case a ServiceException should be thrown
*
* @param block A request to block
* @throws ServiceException On error or if the manager has been stopped already
*/
abstract public void start(boolean block) throws ServiceException;
abstract public void stop() throws ServiceException;
}
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