/*
* Copyright (c) 2012 Karol Bucek
*
* Licensed 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.kares.jruby.rack;
import javax.servlet.ServletContext;
import org.jruby.Ruby;
import org.jruby.rack.RackApplication;
import org.jruby.rack.RackApplicationFactory;
import org.jruby.rack.RackContext;
import org.jruby.rack.RackException;
import org.jruby.rack.RackLogger;
import org.kares.jruby.ServletWorkerManager;
/**
* Default worker manager implemented on top of JRuby-Rack.
*
* @author kares <self_AT_kares_DOT_org>
*/
public class DefaultWorkerManager extends ServletWorkerManager {
public DefaultWorkerManager(final ServletContext context) {
super(context);
}
@Override
public Ruby getRuntime() throws IllegalStateException, UnsupportedOperationException {
// obtain JRuby runtime from JRuby-Rack :
final RackApplicationFactory appFactory = getRackFactory();
if ( appFactory == null ) {
final String message =
RackApplicationFactory.class.getName() + " not yet initialized - " +
"seems this listener is executing before the " +
"RackServletContextListener / RailsSevletContextListener !";
log("[" + getClass().getName() + "] " + message);
throw new IllegalStateException(message);
}
final RackApplication app;
try {
app = appFactory.getApplication();
}
catch (RackException e) {
throw new UnsupportedOperationException(e); // rack/rails initialization failure
}
if ( app == null ) {
throw new IllegalStateException("factory returned null app");
}
if ( app.getClass().getName().indexOf("ErrorApplication") != -1 ) {
throw new UnsupportedOperationException("won't use error application runtime");
}
return app.getRuntime();
}
protected RackContext getRackContext() {
return (RackContext) getServletContext().
getAttribute( RackApplicationFactory.RACK_CONTEXT );
}
protected RackApplicationFactory getRackFactory() {
return (RackApplicationFactory) getServletContext().
getAttribute( RackApplicationFactory.FACTORY );
}
private RackLogger logger;
public RackLogger getLogger() {
if (logger == null) {
synchronized (this) {
if (logger == null) {
logger = getRackContext();
}
}
}
return logger;
}
public synchronized void setLogger(RackLogger logger) {
this.logger = logger;
}
@Override
protected void log(String message) {
final RackLogger logger = getLogger();
if (logger != null) {
logger.log(RackLogger.INFO, message);
}
else {
super.log(message);
}
}
@Override
protected void log(String message, Exception e) {
final RackLogger logger = getLogger();
if (logger != null) {
logger.log(RackLogger.ERROR, message, e);
}
else {
super.log(message, e);
}
}
}