2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. Look for COPYING file in the top folder.
16 * If not, see http://opensource.org/licenses/GPL-2.0.
18 package org.apidesign.bck2brwsr.launcher;
20 import java.io.Closeable;
22 import java.io.IOException;
23 import java.io.InputStream;
24 import java.io.InterruptedIOException;
25 import java.io.OutputStream;
26 import java.io.Writer;
28 import java.net.URISyntaxException;
30 import java.util.ArrayList;
31 import java.util.Arrays;
32 import java.util.Enumeration;
33 import java.util.LinkedHashSet;
34 import java.util.List;
36 import java.util.concurrent.BlockingQueue;
37 import java.util.concurrent.CountDownLatch;
38 import java.util.concurrent.LinkedBlockingQueue;
39 import java.util.concurrent.TimeUnit;
40 import java.util.logging.Level;
41 import java.util.logging.Logger;
42 import org.apidesign.vm4brwsr.Bck2Brwsr;
43 import org.glassfish.grizzly.PortRange;
44 import org.glassfish.grizzly.http.server.HttpHandler;
45 import org.glassfish.grizzly.http.server.HttpServer;
46 import org.glassfish.grizzly.http.server.NetworkListener;
47 import org.glassfish.grizzly.http.server.Request;
48 import org.glassfish.grizzly.http.server.Response;
49 import org.glassfish.grizzly.http.server.ServerConfiguration;
52 * Lightweight server to launch Bck2Brwsr applications and tests.
53 * Supports execution in native browser as well as Java's internal
56 final class Bck2BrwsrLauncher extends Launcher implements Closeable {
57 private static final Logger LOG = Logger.getLogger(Bck2BrwsrLauncher.class.getName());
58 private static final MethodInvocation END = new MethodInvocation(null, null, null);
59 private Set<ClassLoader> loaders = new LinkedHashSet<>();
60 private BlockingQueue<MethodInvocation> methods = new LinkedBlockingQueue<>();
62 private final Res resources = new Res();
63 private final String cmd;
64 private Object[] brwsr;
65 private HttpServer server;
66 private CountDownLatch wait;
68 public Bck2BrwsrLauncher(String cmd) {
73 MethodInvocation addMethod(Class<?> clazz, String method, String html) throws IOException {
74 loaders.add(clazz.getClassLoader());
75 MethodInvocation c = new MethodInvocation(clazz.getName(), method, html);
79 } catch (InterruptedException ex) {
80 throw new IOException(ex);
85 public void setTimeout(long ms) {
89 public void addClassLoader(ClassLoader url) {
90 this.loaders.add(url);
93 public void showURL(String startpage) throws IOException {
94 if (!startpage.startsWith("/")) {
95 startpage = "/" + startpage;
97 HttpServer s = initServer(".", true);
98 s.getServerConfiguration().addHttpHandler(new Page(resources, null), "/");
100 launchServerAndBrwsr(s, startpage);
101 } catch (URISyntaxException | InterruptedException ex) {
102 throw new IOException(ex);
106 void showDirectory(File dir, String startpage) throws IOException {
107 if (!startpage.startsWith("/")) {
108 startpage = "/" + startpage;
110 HttpServer s = initServer(dir.getPath(), false);
112 launchServerAndBrwsr(s, startpage);
113 } catch (URISyntaxException | InterruptedException ex) {
114 throw new IOException(ex);
119 public void initialize() throws IOException {
122 } catch (InterruptedException ex) {
123 final InterruptedIOException iio = new InterruptedIOException(ex.getMessage());
126 } catch (Exception ex) {
127 if (ex instanceof IOException) {
128 throw (IOException)ex;
130 if (ex instanceof RuntimeException) {
131 throw (RuntimeException)ex;
133 throw new IOException(ex);
137 private HttpServer initServer(String path, boolean addClasses) throws IOException {
138 HttpServer s = HttpServer.createSimpleServer(path, new PortRange(8080, 65535));
140 final ServerConfiguration conf = s.getServerConfiguration();
142 conf.addHttpHandler(new VM(resources), "/vm.js");
143 conf.addHttpHandler(new Classes(resources), "/classes/");
148 private void executeInBrowser() throws InterruptedException, URISyntaxException, IOException {
149 wait = new CountDownLatch(1);
150 server = initServer(".", true);
151 ServerConfiguration conf = server.getServerConfiguration();
152 conf.addHttpHandler(new Page(resources,
153 "org/apidesign/bck2brwsr/launcher/harness.xhtml"
155 conf.addHttpHandler(new HttpHandler() {
157 List<MethodInvocation> cases = new ArrayList<>();
159 public void service(Request request, Response response) throws Exception {
160 String id = request.getParameter("request");
161 String value = request.getParameter("result");
163 if (id != null && value != null) {
164 LOG.log(Level.INFO, "Received result for case {0} = {1}", new Object[]{id, value});
165 value = decodeURL(value);
166 cases.get(Integer.parseInt(id)).result(value, null);
169 MethodInvocation mi = methods.take();
171 response.getWriter().write("");
174 LOG.log(Level.INFO, "End of data reached. Exiting.");
179 final String cn = mi.className;
180 final String mn = mi.methodName;
181 LOG.log(Level.INFO, "Request for {0} case. Sending {1}.{2}", new Object[]{cnt, cn, mn});
182 response.getWriter().write("{"
183 + "className: '" + cn + "', "
184 + "methodName: '" + mn + "', "
187 if (mi.html != null) {
188 response.getWriter().write(", html: '");
189 response.getWriter().write(encodeJSON(mi.html));
190 response.getWriter().write("'");
192 response.getWriter().write("}");
197 this.brwsr = launchServerAndBrwsr(server, "/execute");
200 private static String encodeJSON(String in) {
201 StringBuilder sb = new StringBuilder();
202 for (int i = 0; i < in.length(); i++) {
203 char ch = in.charAt(i);
204 if (ch < 32 || ch == '\'' || ch == '"') {
206 String hs = "0000" + Integer.toHexString(ch);
207 hs = hs.substring(hs.length() - 4);
213 return sb.toString();
217 public void shutdown() throws IOException {
220 int prev = methods.size();
222 if (wait != null && wait.await(timeOut, TimeUnit.MILLISECONDS)) {
225 } catch (InterruptedException ex) {
226 throw new IOException(ex);
228 if (prev == methods.size()) {
231 "Timeout and no test has been executed meanwhile (at {0}). Giving up.",
237 "Timeout, but tests got from {0} to {1}. Trying again.",
238 new Object[]{prev, methods.size()}
241 stopServerAndBrwsr(server, brwsr);
244 static void copyStream(InputStream is, OutputStream os, String baseURL, String... params) throws IOException {
250 if (ch == '$' && params.length > 0) {
251 int cnt = is.read() - '0';
252 if (cnt == 'U' - '0') {
253 os.write(baseURL.getBytes());
255 if (cnt >= 0 && cnt < params.length) {
256 os.write(params[cnt].getBytes());
264 private Object[] launchServerAndBrwsr(HttpServer server, final String page) throws IOException, URISyntaxException, InterruptedException {
266 NetworkListener listener = server.getListeners().iterator().next();
267 int port = listener.getPort();
269 URI uri = new URI("http://localhost:" + port + page);
270 LOG.log(Level.INFO, "Showing {0}", uri);
273 LOG.log(Level.INFO, "Trying Desktop.browse on {0} {2} by {1}", new Object[] {
274 System.getProperty("java.vm.name"),
275 System.getProperty("java.vm.vendor"),
276 System.getProperty("java.vm.version"),
278 java.awt.Desktop.getDesktop().browse(uri);
279 LOG.log(Level.INFO, "Desktop.browse successfully finished");
281 } catch (UnsupportedOperationException ex) {
282 LOG.log(Level.INFO, "Desktop.browse not supported: {0}", ex.getMessage());
283 LOG.log(Level.FINE, null, ex);
287 String cmdName = cmd == null ? "xdg-open" : cmd;
289 cmdName, uri.toString()
291 LOG.log(Level.INFO, "Launching {0}", Arrays.toString(cmdArr));
292 final Process process = Runtime.getRuntime().exec(cmdArr);
293 return new Object[] { process, null };
297 private static String decodeURL(String s) {
299 int pos = s.indexOf('%');
303 int i = Integer.parseInt(s.substring(pos + 1, pos + 2), 16);
304 s = s.substring(0, pos) + (char)i + s.substring(pos + 2);
308 private void stopServerAndBrwsr(HttpServer server, Object[] brwsr) throws IOException {
312 Process process = (Process)brwsr[0];
315 InputStream stdout = process.getInputStream();
316 InputStream stderr = process.getErrorStream();
317 drain("StdOut", stdout);
318 drain("StdErr", stderr);
322 res = process.waitFor();
323 } catch (InterruptedException ex) {
324 throw new IOException(ex);
326 LOG.log(Level.INFO, "Exit code: {0}", res);
328 deleteTree((File)brwsr[1]);
331 private static void drain(String name, InputStream is) throws IOException {
332 int av = is.available();
334 StringBuilder sb = new StringBuilder();
335 sb.append("v== ").append(name).append(" ==v\n");
337 sb.append((char)is.read());
339 sb.append("\n^== ").append(name).append(" ==^");
340 LOG.log(Level.INFO, sb.toString());
344 private void deleteTree(File file) {
348 File[] arr = file.listFiles();
358 public void close() throws IOException {
362 private class Res implements Bck2Brwsr.Resources {
364 public InputStream get(String resource) throws IOException {
365 for (ClassLoader l : loaders) {
367 Enumeration<URL> en = l.getResources(resource);
368 while (en.hasMoreElements()) {
369 u = en.nextElement();
372 return u.openStream();
375 throw new IOException("Can't find " + resource);
379 private static class Page extends HttpHandler {
380 private final String resource;
381 private final String[] args;
382 private final Res res;
384 public Page(Res res, String resource, String... args) {
386 this.resource = resource;
387 this.args = args.length == 0 ? new String[] { "$0" } : args;
391 public void service(Request request, Response response) throws Exception {
394 r = request.getHttpHandlerPath();
395 if (r.startsWith("/")) {
399 String[] replace = {};
400 if (r.endsWith(".html")) {
401 response.setContentType("text/html");
402 LOG.info("Content type text/html");
405 if (r.endsWith(".xhtml")) {
406 response.setContentType("application/xhtml+xml");
407 LOG.info("Content type application/xhtml+xml");
410 OutputStream os = response.getOutputStream();
411 try (InputStream is = res.get(r)) {
412 copyStream(is, os, request.getRequestURL().toString(), replace);
413 } catch (IOException ex) {
414 response.setDetailMessage(ex.getLocalizedMessage());
416 response.setStatus(404);
421 private static class VM extends HttpHandler {
422 private final String bck2brwsr;
424 public VM(Res loader) throws IOException {
425 StringBuilder sb = new StringBuilder();
426 Bck2Brwsr.generate(sb, loader);
428 "function ldCls(res) {\n"
429 + " var request = new XMLHttpRequest();\n"
430 + " request.open('GET', '/classes/' + res, false);\n"
431 + " request.send();\n"
432 + " var arr = eval('(' + request.responseText + ')');\n"
435 + "var vm = new bck2brwsr(ldCls);\n"
437 this.bck2brwsr = sb.toString();
441 public void service(Request request, Response response) throws Exception {
442 response.setCharacterEncoding("UTF-8");
443 response.setContentType("text/javascript");
444 response.getWriter().write(bck2brwsr);
448 private static class Classes extends HttpHandler {
449 private final Res loader;
451 public Classes(Res loader) {
452 this.loader = loader;
456 public void service(Request request, Response response) throws Exception {
457 String res = request.getHttpHandlerPath();
458 if (res.startsWith("/")) {
459 res = res.substring(1);
461 try (InputStream is = loader.get(res)) {
462 response.setContentType("text/javascript");
463 Writer w = response.getWriter();
465 for (int i = 0;; i++) {
479 w.append(Integer.toString(b));
482 } catch (IOException ex) {
484 response.setDetailMessage(ex.getMessage());