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.UnsupportedEncodingException;
27 import java.io.Writer;
29 import java.net.URISyntaxException;
31 import java.util.ArrayList;
32 import java.util.Arrays;
33 import java.util.Enumeration;
34 import java.util.LinkedHashSet;
35 import java.util.List;
37 import java.util.concurrent.BlockingQueue;
38 import java.util.concurrent.CountDownLatch;
39 import java.util.concurrent.LinkedBlockingQueue;
40 import java.util.concurrent.TimeUnit;
41 import java.util.logging.Level;
42 import java.util.logging.Logger;
43 import org.apidesign.bck2brwsr.launcher.InvocationContext.Resource;
44 import org.apidesign.vm4brwsr.Bck2Brwsr;
45 import org.glassfish.grizzly.PortRange;
46 import org.glassfish.grizzly.http.server.HttpHandler;
47 import org.glassfish.grizzly.http.server.HttpServer;
48 import org.glassfish.grizzly.http.server.NetworkListener;
49 import org.glassfish.grizzly.http.server.Request;
50 import org.glassfish.grizzly.http.server.Response;
51 import org.glassfish.grizzly.http.server.ServerConfiguration;
52 import org.glassfish.grizzly.http.util.HttpStatus;
55 * Lightweight server to launch Bck2Brwsr applications and tests.
56 * Supports execution in native browser as well as Java's internal
59 class BaseHTTPLauncher extends Launcher implements Closeable {
60 private static final Logger LOG = Logger.getLogger(BaseHTTPLauncher.class.getName());
61 private static final InvocationContext END = new InvocationContext(null, null, null);
62 private final Set<ClassLoader> loaders = new LinkedHashSet<>();
63 private final BlockingQueue<InvocationContext> methods = new LinkedBlockingQueue<>();
65 private final Res resources = new Res();
66 private final String cmd;
67 private Object[] brwsr;
68 private HttpServer server;
69 private CountDownLatch wait;
71 public BaseHTTPLauncher(String cmd) {
73 addClassLoader(Bck2Brwsr.class.getClassLoader());
78 InvocationContext runMethod(InvocationContext c) throws IOException {
79 loaders.add(c.clazz.getClassLoader());
83 } catch (InterruptedException ex) {
84 throw new IOException(ex);
89 public void setTimeout(long ms) {
93 public void addClassLoader(ClassLoader url) {
94 this.loaders.add(url);
97 ClassLoader[] loaders() {
98 return loaders.toArray(new ClassLoader[loaders.size()]);
101 public void showURL(String startpage) throws IOException {
102 if (!startpage.startsWith("/")) {
103 startpage = "/" + startpage;
105 HttpServer s = initServer(".", true);
106 int last = startpage.lastIndexOf('/');
107 String prefix = startpage.substring(0, last);
108 String simpleName = startpage.substring(last);
109 s.getServerConfiguration().addHttpHandler(new SubTree(resources, prefix), "/");
111 launchServerAndBrwsr(s, simpleName);
112 } catch (URISyntaxException | InterruptedException ex) {
113 throw new IOException(ex);
117 void showDirectory(File dir, String startpage) throws IOException {
118 if (!startpage.startsWith("/")) {
119 startpage = "/" + startpage;
121 HttpServer s = initServer(dir.getPath(), false);
123 launchServerAndBrwsr(s, startpage);
124 } catch (URISyntaxException | InterruptedException ex) {
125 throw new IOException(ex);
130 public void initialize() throws IOException {
133 } catch (InterruptedException ex) {
134 final InterruptedIOException iio = new InterruptedIOException(ex.getMessage());
137 } catch (Exception ex) {
138 if (ex instanceof IOException) {
139 throw (IOException)ex;
141 if (ex instanceof RuntimeException) {
142 throw (RuntimeException)ex;
144 throw new IOException(ex);
148 private HttpServer initServer(String path, boolean addClasses) throws IOException {
149 HttpServer s = HttpServer.createSimpleServer(path, new PortRange(8080, 65535));
151 final ServerConfiguration conf = s.getServerConfiguration();
153 conf.addHttpHandler(new VM(), "/bck2brwsr.js");
154 conf.addHttpHandler(new Classes(resources), "/classes/");
159 private void executeInBrowser() throws InterruptedException, URISyntaxException, IOException {
160 wait = new CountDownLatch(1);
161 server = initServer(".", true);
162 final ServerConfiguration conf = server.getServerConfiguration();
164 class DynamicResourceHandler extends HttpHandler {
165 private final InvocationContext ic;
166 public DynamicResourceHandler(InvocationContext ic) {
167 if (ic == null || ic.resources.isEmpty()) {
168 throw new NullPointerException();
171 for (Resource r : ic.resources) {
172 conf.addHttpHandler(this, r.httpPath);
176 public void close() {
177 conf.removeHttpHandler(this);
181 public void service(Request request, Response response) throws Exception {
182 for (Resource r : ic.resources) {
183 if (r.httpPath.equals(request.getRequestURI())) {
184 LOG.log(Level.INFO, "Serving HttpResource for {0}", request.getRequestURI());
185 response.setContentType(r.httpType);
186 r.httpContent.reset();
187 String[] params = null;
188 if (r.parameters.length != 0) {
189 params = new String[r.parameters.length];
190 for (int i = 0; i < r.parameters.length; i++) {
191 params[i] = request.getParameter(r.parameters[i]);
195 copyStream(r.httpContent, response.getOutputStream(), null, params);
201 conf.addHttpHandler(new Page(resources,
202 "org/apidesign/bck2brwsr/launcher/fximpl/harness.xhtml"
205 conf.addHttpHandler(new HttpHandler() {
207 List<InvocationContext> cases = new ArrayList<>();
208 DynamicResourceHandler prev;
210 public void service(Request request, Response response) throws Exception {
211 String id = request.getParameter("request");
212 String value = request.getParameter("result");
213 if (value != null && value.indexOf((char)0xC5) != -1) {
214 value = toUTF8(value);
218 InvocationContext mi = null;
221 if (id != null && value != null) {
222 LOG.log(Level.INFO, "Received result for case {0} = {1}", new Object[]{id, value});
223 value = decodeURL(value);
224 int indx = Integer.parseInt(id);
225 cases.get(indx).result(value, null);
226 if (++indx < cases.size()) {
227 mi = cases.get(indx);
228 LOG.log(Level.INFO, "Re-executing case {0}", indx);
232 if (!cases.isEmpty()) {
233 LOG.info("Re-executing test cases");
249 response.getWriter().write("");
252 LOG.log(Level.INFO, "End of data reached. Exiting.");
256 if (!mi.resources.isEmpty()) {
257 prev = new DynamicResourceHandler(mi);
261 final String cn = mi.clazz.getName();
262 final String mn = mi.methodName;
263 LOG.log(Level.INFO, "Request for {0} case. Sending {1}.{2}", new Object[]{caseNmbr, cn, mn});
264 response.getWriter().write("{"
265 + "className: '" + cn + "', "
266 + "methodName: '" + mn + "', "
267 + "request: " + caseNmbr
269 if (mi.html != null) {
270 response.getWriter().write(", html: '");
271 response.getWriter().write(encodeJSON(mi.html));
272 response.getWriter().write("'");
274 response.getWriter().write("}");
278 this.brwsr = launchServerAndBrwsr(server, "/execute");
281 private static String encodeJSON(String in) {
282 StringBuilder sb = new StringBuilder();
283 for (int i = 0; i < in.length(); i++) {
284 char ch = in.charAt(i);
285 if (ch < 32 || ch == '\'' || ch == '"') {
287 String hs = "0000" + Integer.toHexString(ch);
288 hs = hs.substring(hs.length() - 4);
294 return sb.toString();
298 public void shutdown() throws IOException {
301 int prev = methods.size();
303 if (wait != null && wait.await(timeOut, TimeUnit.MILLISECONDS)) {
306 } catch (InterruptedException ex) {
307 throw new IOException(ex);
309 if (prev == methods.size()) {
312 "Timeout and no test has been executed meanwhile (at {0}). Giving up.",
318 "Timeout, but tests got from {0} to {1}. Trying again.",
319 new Object[]{prev, methods.size()}
322 stopServerAndBrwsr(server, brwsr);
325 static void copyStream(InputStream is, OutputStream os, String baseURL, String... params) throws IOException {
331 if (ch == '$' && params.length > 0) {
332 int cnt = is.read() - '0';
333 if (baseURL != null && cnt == 'U' - '0') {
334 os.write(baseURL.getBytes("UTF-8"));
336 if (cnt >= 0 && cnt < params.length) {
337 os.write(params[cnt].getBytes("UTF-8"));
349 private Object[] launchServerAndBrwsr(HttpServer server, final String page) throws IOException, URISyntaxException, InterruptedException {
351 NetworkListener listener = server.getListeners().iterator().next();
352 int port = listener.getPort();
354 URI uri = new URI("http://localhost:" + port + page);
355 return showBrwsr(uri);
357 private static String toUTF8(String value) throws UnsupportedEncodingException {
358 byte[] arr = new byte[value.length()];
359 for (int i = 0; i < arr.length; i++) {
360 arr[i] = (byte)value.charAt(i);
362 return new String(arr, "UTF-8");
365 private static String decodeURL(String s) {
367 int pos = s.indexOf('%');
371 int i = Integer.parseInt(s.substring(pos + 1, pos + 2), 16);
372 s = s.substring(0, pos) + (char)i + s.substring(pos + 2);
376 private void stopServerAndBrwsr(HttpServer server, Object[] brwsr) throws IOException {
380 Process process = (Process)brwsr[0];
383 InputStream stdout = process.getInputStream();
384 InputStream stderr = process.getErrorStream();
385 drain("StdOut", stdout);
386 drain("StdErr", stderr);
390 res = process.waitFor();
391 } catch (InterruptedException ex) {
392 throw new IOException(ex);
394 LOG.log(Level.INFO, "Exit code: {0}", res);
396 deleteTree((File)brwsr[1]);
399 private static void drain(String name, InputStream is) throws IOException {
400 int av = is.available();
402 StringBuilder sb = new StringBuilder();
403 sb.append("v== ").append(name).append(" ==v\n");
405 sb.append((char)is.read());
407 sb.append("\n^== ").append(name).append(" ==^");
408 LOG.log(Level.INFO, sb.toString());
412 private void deleteTree(File file) {
416 File[] arr = file.listFiles();
426 public void close() throws IOException {
430 protected Object[] showBrwsr(URI uri) throws IOException {
431 LOG.log(Level.INFO, "Showing {0}", uri);
434 LOG.log(Level.INFO, "Trying Desktop.browse on {0} {2} by {1}", new Object[] {
435 System.getProperty("java.vm.name"),
436 System.getProperty("java.vm.vendor"),
437 System.getProperty("java.vm.version"),
439 java.awt.Desktop.getDesktop().browse(uri);
440 LOG.log(Level.INFO, "Desktop.browse successfully finished");
442 } catch (UnsupportedOperationException ex) {
443 LOG.log(Level.INFO, "Desktop.browse not supported: {0}", ex.getMessage());
444 LOG.log(Level.FINE, null, ex);
448 String cmdName = cmd == null ? "xdg-open" : cmd;
450 cmdName, uri.toString()
452 LOG.log(Level.INFO, "Launching {0}", Arrays.toString(cmdArr));
453 final Process process = Runtime.getRuntime().exec(cmdArr);
454 return new Object[] { process, null };
458 void generateBck2BrwsrJS(StringBuilder sb, Bck2Brwsr.Resources loader) throws IOException {
459 Bck2Brwsr.generate(sb, loader);
461 "(function WrapperVM(global) {"
462 + " function ldCls(res) {\n"
463 + " var request = new XMLHttpRequest();\n"
464 + " request.open('GET', '/classes/' + res, false);\n"
465 + " request.send();\n"
466 + " if (request.status !== 200) return null;\n"
467 + " var arr = eval('(' + request.responseText + ')');\n"
470 + " var prevvm = global.bck2brwsr;\n"
471 + " global.bck2brwsr = function() {\n"
472 + " var args = Array.prototype.slice.apply(arguments);\n"
473 + " args.unshift(ldCls);\n"
474 + " return prevvm.apply(null, args);\n"
479 private class Res implements Bck2Brwsr.Resources {
481 public InputStream get(String resource) throws IOException {
482 for (ClassLoader l : loaders) {
484 Enumeration<URL> en = l.getResources(resource);
485 while (en.hasMoreElements()) {
486 u = en.nextElement();
489 return u.openStream();
492 throw new IOException("Can't find " + resource);
496 private static class Page extends HttpHandler {
497 final String resource;
498 private final String[] args;
499 private final Res res;
501 public Page(Res res, String resource, String... args) {
503 this.resource = resource;
504 this.args = args.length == 0 ? new String[] { "$0" } : args;
508 public void service(Request request, Response response) throws Exception {
509 String r = computePage(request);
510 if (r.startsWith("/")) {
513 String[] replace = {};
514 if (r.endsWith(".html")) {
515 response.setContentType("text/html");
516 LOG.info("Content type text/html");
519 if (r.endsWith(".xhtml")) {
520 response.setContentType("application/xhtml+xml");
521 LOG.info("Content type application/xhtml+xml");
524 OutputStream os = response.getOutputStream();
525 try (InputStream is = res.get(r)) {
526 copyStream(is, os, request.getRequestURL().toString(), replace);
527 } catch (IOException ex) {
528 response.setDetailMessage(ex.getLocalizedMessage());
530 response.setStatus(404);
534 protected String computePage(Request request) {
537 r = request.getHttpHandlerPath();
543 private static class SubTree extends Page {
545 public SubTree(Res res, String resource, String... args) {
546 super(res, resource, args);
550 protected String computePage(Request request) {
551 return resource + request.getHttpHandlerPath();
557 private class VM extends HttpHandler {
559 public void service(Request request, Response response) throws Exception {
560 response.setCharacterEncoding("UTF-8");
561 response.setContentType("text/javascript");
562 StringBuilder sb = new StringBuilder();
563 generateBck2BrwsrJS(sb, BaseHTTPLauncher.this.resources);
564 response.getWriter().write(sb.toString());
568 private static class Classes extends HttpHandler {
569 private final Res loader;
571 public Classes(Res loader) {
572 this.loader = loader;
576 public void service(Request request, Response response) throws Exception {
577 String res = request.getHttpHandlerPath();
578 if (res.startsWith("/")) {
579 res = res.substring(1);
581 try (InputStream is = loader.get(res)) {
582 response.setContentType("text/javascript");
583 Writer w = response.getWriter();
585 for (int i = 0;; i++) {
599 w.append(Integer.toString(b));
602 } catch (IOException ex) {
603 response.setStatus(HttpStatus.NOT_FOUND_404);
605 response.setDetailMessage(ex.getMessage());