com.ixortalk.gateway.web.config.WebConfigurer Maven / Gradle / Ivy

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IxorTalk Oauth2 supported Zuul Proxy Server (Gateway)
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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2016-present IxorTalk CVBA
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.ixortalk.gateway.web.config;

import com.ixortalk.gateway.web.filter.CachingHttpHeadersFilter;
import org.eclipse.jetty.server.ConnectionFactory;
import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.ForwardedRequestCustomizer;
import org.eclipse.jetty.server.HttpConfiguration;
import org.eclipse.jetty.server.HttpConnectionFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainerFactory;
import org.springframework.boot.web.servlet.ServletContextInitializer;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;

import javax.inject.Inject;
import javax.servlet.DispatcherType;
import javax.servlet.FilterRegistration;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import java.util.Arrays;
import java.util.EnumSet;

/**
 * Configuration of web application with Servlet 3.0 APIs.
 */
@Configuration
public class WebConfigurer implements ServletContextInitializer, EmbeddedServletContainerCustomizer {

    private final Logger log = LoggerFactory.getLogger(WebConfigurer.class);

    @Inject
    private Environment env;

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        log.info("Web application configuration, using profiles: {}", Arrays.toString(env.getActiveProfiles()));
        EnumSet disps = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.ASYNC);
        initCachingHttpHeadersFilter(servletContext, disps);
        log.info("Web application fully configured");
    }

    @Override
    public void customize(ConfigurableEmbeddedServletContainer container) {
        JettyEmbeddedServletContainerFactory containerFactory = (JettyEmbeddedServletContainerFactory) container;
        containerFactory.addServerCustomizers(server -> {
            for (Connector connector : server.getConnectors()) {
                ConnectionFactory connectionFactory = connector.getDefaultConnectionFactory();
                if(connectionFactory instanceof HttpConnectionFactory) {
                    HttpConnectionFactory defaultConnectionFactory = (HttpConnectionFactory) connectionFactory;
                    HttpConfiguration httpConfiguration = defaultConnectionFactory.getHttpConfiguration();
                    httpConfiguration.addCustomizer(new ForwardedRequestCustomizer());
                }
            }
        });
    }

    /**
     * Initializes the caching HTTP Headers Filter.
     */
    private void initCachingHttpHeadersFilter(ServletContext servletContext,
                                              EnumSet disps) {
        log.debug("Registering Caching HTTP Headers Filter");
        FilterRegistration.Dynamic cachingHttpHeadersFilter =
            servletContext.addFilter("cachingHttpHeadersFilter",
                new CachingHttpHeadersFilter());

        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/assets/*");
        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/content/*");
        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/app/*");

        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/user-mgmt/assets/*");
        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/user-mgmt/app/*");
        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/user-mgmt/content/*");

        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/uaa/assets/*");
        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/uaa/app/*");
        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/uaa/content/*");

        cachingHttpHeadersFilter.setAsyncSupported(true);
    }

}