| /* |
| * Copyright (C) 2009-2010, Google Inc. and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package org.eclipse.jgit.http.server.glue; |
| |
| import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND; |
| |
| import java.io.IOException; |
| |
| import javax.servlet.ServletConfig; |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| /** |
| * Generic container servlet to manage routing to different pipelines. |
| * <p> |
| * Callers can create and configure a new processing pipeline by using one of |
| * the {@link #serve(String)} or {@link #serveRegex(String)} methods to allocate |
| * a binder for a particular URL pattern. |
| * <p> |
| * Registered filters and servlets are initialized lazily, usually during the |
| * first request. Once initialized the bindings in this servlet cannot be |
| * modified without destroying the servlet and thereby destroying all registered |
| * filters and servlets. |
| */ |
| public class MetaServlet extends HttpServlet { |
| private static final long serialVersionUID = 1L; |
| |
| private final MetaFilter filter; |
| |
| /** |
| * Empty servlet with no bindings. |
| */ |
| public MetaServlet() { |
| this(new MetaFilter()); |
| } |
| |
| /** |
| * Initialize a servlet wrapping a filter. |
| * |
| * @param delegateFilter |
| * the filter being wrapped by the servlet. |
| */ |
| protected MetaServlet(MetaFilter delegateFilter) { |
| filter = delegateFilter; |
| } |
| |
| /** |
| * Get delegate filter |
| * |
| * @return filter this servlet delegates all routing logic to. |
| */ |
| protected MetaFilter getDelegateFilter() { |
| return filter; |
| } |
| |
| /** |
| * Construct a binding for a specific path. |
| * |
| * @param path |
| * pattern to match. |
| * @return binder for the passed path. |
| */ |
| public ServletBinder serve(String path) { |
| return filter.serve(path); |
| } |
| |
| /** |
| * Construct a binding for a regular expression. |
| * |
| * @param expression |
| * the regular expression to pattern match the URL against. |
| * @return binder for the passed expression. |
| */ |
| public ServletBinder serveRegex(String expression) { |
| return filter.serveRegex(expression); |
| } |
| |
| @Override |
| public void init(ServletConfig config) throws ServletException { |
| String name = filter.getClass().getName(); |
| ServletContext ctx = config.getServletContext(); |
| filter.init(new NoParameterFilterConfig(name, ctx)); |
| } |
| |
| @Override |
| public void destroy() { |
| filter.destroy(); |
| } |
| |
| @Override |
| protected void service(HttpServletRequest req, HttpServletResponse res) |
| throws ServletException, IOException { |
| filter.doFilter(req, res, |
| (ServletRequest request, ServletResponse response) -> { |
| ((HttpServletResponse) response).sendError(SC_NOT_FOUND); |
| }); |
| } |
| |
| /** |
| * Configure a newly created binder. |
| * |
| * @param b |
| * the newly created binder. |
| * @return binder for the caller, potentially after adding one or more |
| * filters into the pipeline. |
| */ |
| protected ServletBinder register(ServletBinder b) { |
| return filter.register(b); |
| } |
| } |