| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.winegrower.servlet.service; |
| |
| import static java.util.Collections.list; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.Dictionary; |
| import java.util.EnumSet; |
| import java.util.EventListener; |
| import java.util.Hashtable; |
| |
| import javax.servlet.DispatcherType; |
| import javax.servlet.Filter; |
| import javax.servlet.FilterRegistration; |
| import javax.servlet.Servlet; |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletRegistration; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.osgi.service.http.HttpContext; |
| import org.osgi.service.http.HttpService; |
| |
| public class ServletHttpService implements HttpService { |
| private final ServletContext context; |
| |
| public /*let's reuse it*/ ServletHttpService(final ServletContext context) { |
| this.context = context; |
| } |
| |
| public void registerListener(final EventListener listener, final Hashtable<String, Object> props) { |
| getContext(null).addListener(listener); |
| } |
| |
| public void registerFilter(final String alias, final Filter filter, final Dictionary initParams) { |
| final Object filterName = initParams.get("filterName"); |
| final FilterRegistration.Dynamic dynamic = getContext(null).addFilter(filterName == null ? alias : String.valueOf(filterName), filter); |
| final Object asyncSupported = initParams.get("asyncSupported"); |
| dynamic.setAsyncSupported(asyncSupported == null || Boolean.parseBoolean(String.valueOf(asyncSupported))); |
| if (initParams != null) { |
| list(initParams.keys()).stream() |
| .filter(it -> !"filterName".equals(it) && !"asyncSupported".equals(it)) |
| .forEach(key -> dynamic.setInitParameter(String.valueOf(key), String.valueOf(initParams.get(key)))); |
| } |
| dynamic.addMappingForUrlPatterns(EnumSet.allOf(DispatcherType.class), Boolean.parseBoolean(String.valueOf(initParams.get("is-match-after"))), alias); |
| } |
| |
| @Override |
| public void registerServlet(final String alias, final Servlet servlet, |
| final Dictionary initParams, final HttpContext context) { |
| final Object servletName = initParams.get("servletName"); |
| final ServletRegistration.Dynamic dynamic = getContext(context).addServlet(servletName == null ? alias : String.valueOf(servletName), servlet); |
| final Object asyncSupported = initParams.get("asyncSupported"); |
| dynamic.setAsyncSupported(asyncSupported == null || Boolean.parseBoolean(String.valueOf(asyncSupported))); |
| if (initParams != null) { |
| list(initParams.keys()).stream() |
| .filter(it -> !"servletName".equals(it) && !"asyncSupported".equals(it)) |
| .forEach(key -> dynamic.setInitParameter(String.valueOf(key), String.valueOf(initParams.get(key)))); |
| } |
| dynamic.addMapping(alias); |
| } |
| |
| @Override |
| public void registerResources(final String alias, final String name, final HttpContext context) { |
| final ServletContext servletContext = getContext(context); |
| final ServletRegistration defaultServlet = servletContext.getServletRegistration("default"); |
| String servletImpl; |
| if (defaultServlet != null) { |
| servletImpl = defaultServlet.getClassName(); |
| } else if (servletContext.getClass().getName().startsWith("org.apache.catalina.")) { |
| servletImpl = "org.apache.catalina.servlets.DefaultServlet"; |
| } else /*assumed jetty*/ { |
| servletImpl = "org.eclipse.jetty.servlet.DefaultServlet"; |
| } |
| final ServletRegistration.Dynamic dynamic = servletContext.addServlet(alias, servletImpl); |
| dynamic.addMapping(alias); |
| } |
| |
| @Override |
| public void unregister(final String alias) { |
| // no-op |
| } |
| |
| @Override |
| public HttpContext createDefaultHttpContext() { |
| return new ServletHttpContext(this.context); |
| } |
| |
| private ServletContext getContext(final HttpContext context) { |
| return ServletHttpContext.class.isInstance(context) ? |
| ServletHttpContext.class.cast(context).delegate : this.context; |
| } |
| |
| private static class ServletHttpContext implements HttpContext { |
| private final ServletContext delegate; |
| |
| ServletHttpContext(final ServletContext context) { |
| this.delegate = context; |
| } |
| |
| @Override |
| public boolean handleSecurity(final HttpServletRequest request, final HttpServletResponse response) { |
| return true; |
| } |
| |
| @Override |
| public URL getResource(final String name) { |
| try { |
| return delegate.getResource(name); |
| } catch (final MalformedURLException e) { |
| throw new IllegalArgumentException(e); |
| } |
| } |
| |
| @Override |
| public String getMimeType(final String name) { |
| return delegate.getMimeType(name); |
| } |
| } |
| } |