meecrowave-core/src/main/java/org/apache/meecrowave/tomcat/TomcatAutoInitializer.java

/*
 * 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.meecrowave.tomcat;

import java.util.Set;

import javax.servlet.ServletContainerInitializer;
import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;

import org.apache.catalina.servlets.DefaultServlet;
import org.apache.meecrowave.configuration.Configuration;

public class TomcatAutoInitializer implements ServletContainerInitializer {
    @Override
    public void onStartup(final Set<Class<?>> c, final ServletContext ctx) {
        final Configuration builder = Configuration.class.cast(ctx.getAttribute("meecrowave.configuration"));
        if (!builder.isTomcatAutoSetup()) {
            return;
        }

        final ServletRegistration.Dynamic def = ctx.addServlet("default", DefaultServlet.class);
        def.setInitParameter("listings", "false");
        def.setInitParameter("debug", "0");
        def.setLoadOnStartup(1);
        def.addMapping("/");

        try {
            final String jsp = "org.apache.jasper.servlet.JspServlet";
            TomcatAutoInitializer.class.getClassLoader().loadClass(jsp);
            final ServletRegistration.Dynamic jspDef = ctx.addServlet("jsp", jsp);
            if (jspDef != null) {
                jspDef.setInitParameter("fork", "false");
                jspDef.setInitParameter("xpoweredBy", "false");
                jspDef.setInitParameter("development", Boolean.toString(builder.isTomcatJspDevelopment()));
                jspDef.setLoadOnStartup(3);
                jspDef.addMapping("*.jsp");
                jspDef.addMapping("*.jspx");
            }
        } catch (final NoClassDefFoundError | ClassNotFoundException e) {
            // not there, skip
        }
    }
}