/*
* JBoss, Home of Professional Open Source.
* Copyright 2017, 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.wildfly.extension.undertow.filters;
import io.undertow.Handlers;
import io.undertow.attribute.ExchangeAttributes;
import io.undertow.predicate.Predicate;
import io.undertow.server.HttpHandler;
import io.undertow.server.handlers.RedirectHandler;
import io.undertow.server.handlers.SetAttributeHandler;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.SimpleAttributeDefinitionBuilder;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;
import org.wildfly.extension.undertow.Constants;
import java.util.Arrays;
import java.util.Collection;
/**
* @author Stuart Douglas
*/
public class RewriteFilterDefinition extends Filter {
public static final AttributeDefinition TARGET = new SimpleAttributeDefinitionBuilder("target", ModelType.STRING)
.setRequired(true)
.setAllowExpression(true)
.setRestartAllServices()
.build();
public static final AttributeDefinition REDIRECT = new SimpleAttributeDefinitionBuilder("redirect", ModelType.BOOLEAN)
.setRequired(false)
.setDefaultValue(new ModelNode(false))
.setAllowExpression(true)
.setRestartAllServices()
.build();
public static final RewriteFilterDefinition INSTANCE = new RewriteFilterDefinition();
private RewriteFilterDefinition() {
super(Constants.REWRITE);
}
@Override
public Collection<AttributeDefinition> getAttributes() {
return Arrays.asList(TARGET, REDIRECT);
}
@Override
public HttpHandler createHttpHandler(Predicate predicate, ModelNode model, HttpHandler next) {
String expression = model.get(TARGET.getName()).asString();
boolean redirect = model.get(REDIRECT.getName()).asBoolean();
if(predicate == null) {
return create(next, expression, redirect);
} else {
return Handlers.predicate(predicate, create(next, expression, redirect), next);
}
}
public HttpHandler create(HttpHandler next, String expression, boolean redirect) {
if(redirect) {
return new RedirectHandler(expression);
} else {
return new SetAttributeHandler(next, ExchangeAttributes.relativePath(), ExchangeAttributes.parser(getClass().getClassLoader()).parse(expression));
}
}
@Override
protected Class[] getConstructorSignature() {
throw new IllegalStateException(); //should not be used, as the handler is constructed above
}
}