rt/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java
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 final class Bck2BrwsrLauncher extends Launcher implements Closeable {
60 private static final Logger LOG = Logger.getLogger(Bck2BrwsrLauncher.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 Bck2BrwsrLauncher(String cmd) {
76 InvocationContext runMethod(InvocationContext c) throws IOException {
77 loaders.add(c.clazz.getClassLoader());
81 } catch (InterruptedException ex) {
82 throw new IOException(ex);
87 public void setTimeout(long ms) {
91 public void addClassLoader(ClassLoader url) {
92 this.loaders.add(url);
95 public void showURL(String startpage) throws IOException {
96 if (!startpage.startsWith("/")) {
97 startpage = "/" + startpage;
99 HttpServer s = initServer(".", true);
100 int last = startpage.lastIndexOf('/');
101 String prefix = startpage.substring(0, last);
102 String simpleName = startpage.substring(last);
103 s.getServerConfiguration().addHttpHandler(new SubTree(resources, prefix), "/");
105 launchServerAndBrwsr(s, simpleName);
106 } catch (URISyntaxException | InterruptedException ex) {
107 throw new IOException(ex);
111 void showDirectory(File dir, String startpage) throws IOException {
112 if (!startpage.startsWith("/")) {
113 startpage = "/" + startpage;
115 HttpServer s = initServer(dir.getPath(), false);
117 launchServerAndBrwsr(s, startpage);
118 } catch (URISyntaxException | InterruptedException ex) {
119 throw new IOException(ex);
124 public void initialize() throws IOException {
127 } catch (InterruptedException ex) {
128 final InterruptedIOException iio = new InterruptedIOException(ex.getMessage());
131 } catch (Exception ex) {
132 if (ex instanceof IOException) {
133 throw (IOException)ex;
135 if (ex instanceof RuntimeException) {
136 throw (RuntimeException)ex;
138 throw new IOException(ex);
142 private HttpServer initServer(String path, boolean addClasses) throws IOException {
143 HttpServer s = HttpServer.createSimpleServer(path, new PortRange(8080, 65535));
145 final ServerConfiguration conf = s.getServerConfiguration();
147 conf.addHttpHandler(new VM(resources), "/bck2brwsr.js");
148 conf.addHttpHandler(new Classes(resources), "/classes/");
153 private void executeInBrowser() throws InterruptedException, URISyntaxException, IOException {
154 wait = new CountDownLatch(1);
155 server = initServer(".", true);
156 final ServerConfiguration conf = server.getServerConfiguration();
158 class DynamicResourceHandler extends HttpHandler {
159 private final InvocationContext ic;
160 public DynamicResourceHandler(InvocationContext ic) {
161 if (ic == null || ic.resources.isEmpty()) {
162 throw new NullPointerException();
165 for (Resource r : ic.resources) {
166 conf.addHttpHandler(this, r.httpPath);
170 public void close() {
171 conf.removeHttpHandler(this);
175 public void service(Request request, Response response) throws Exception {
176 for (Resource r : ic.resources) {
177 if (r.httpPath.equals(request.getRequestURI())) {
178 LOG.log(Level.INFO, "Serving HttpResource for {0}", request.getRequestURI());
179 response.setContentType(r.httpType);
180 r.httpContent.reset();
181 String[] params = null;
182 if (r.parameters.length != 0) {
183 params = new String[r.parameters.length];
184 for (int i = 0; i < r.parameters.length; i++) {
185 params[i] = request.getParameter(r.parameters[i]);
189 copyStream(r.httpContent, response.getOutputStream(), null, params);
195 conf.addHttpHandler(new Page(resources,
196 "org/apidesign/bck2brwsr/launcher/harness.xhtml"
199 conf.addHttpHandler(new HttpHandler() {
201 List<InvocationContext> cases = new ArrayList<>();
202 DynamicResourceHandler prev;
204 public void service(Request request, Response response) throws Exception {
205 String id = request.getParameter("request");
206 String value = request.getParameter("result");
207 if (value != null && value.indexOf((char)0xC5) != -1) {
208 value = toUTF8(value);
212 InvocationContext mi = null;
215 if (id != null && value != null) {
216 LOG.log(Level.INFO, "Received result for case {0} = {1}", new Object[]{id, value});
217 value = decodeURL(value);
218 int indx = Integer.parseInt(id);
219 cases.get(indx).result(value, null);
220 if (++indx < cases.size()) {
221 mi = cases.get(indx);
222 LOG.log(Level.INFO, "Re-executing case {0}", indx);
226 if (!cases.isEmpty()) {
227 LOG.info("Re-executing test cases");
243 response.getWriter().write("");
246 LOG.log(Level.INFO, "End of data reached. Exiting.");
250 if (!mi.resources.isEmpty()) {
251 prev = new DynamicResourceHandler(mi);
255 final String cn = mi.clazz.getName();
256 final String mn = mi.methodName;
257 LOG.log(Level.INFO, "Request for {0} case. Sending {1}.{2}", new Object[]{caseNmbr, cn, mn});
258 response.getWriter().write("{"
259 + "className: '" + cn + "', "
260 + "methodName: '" + mn + "', "
261 + "request: " + caseNmbr
263 if (mi.html != null) {
264 response.getWriter().write(", html: '");
265 response.getWriter().write(encodeJSON(mi.html));
266 response.getWriter().write("'");
268 response.getWriter().write("}");
272 this.brwsr = launchServerAndBrwsr(server, "/execute");
275 private static String encodeJSON(String in) {
276 StringBuilder sb = new StringBuilder();
277 for (int i = 0; i < in.length(); i++) {
278 char ch = in.charAt(i);
279 if (ch < 32 || ch == '\'' || ch == '"') {
281 String hs = "0000" + Integer.toHexString(ch);
282 hs = hs.substring(hs.length() - 4);
288 return sb.toString();
292 public void shutdown() throws IOException {
295 int prev = methods.size();
297 if (wait != null && wait.await(timeOut, TimeUnit.MILLISECONDS)) {
300 } catch (InterruptedException ex) {
301 throw new IOException(ex);
303 if (prev == methods.size()) {
306 "Timeout and no test has been executed meanwhile (at {0}). Giving up.",
312 "Timeout, but tests got from {0} to {1}. Trying again.",
313 new Object[]{prev, methods.size()}
316 stopServerAndBrwsr(server, brwsr);
319 static void copyStream(InputStream is, OutputStream os, String baseURL, String... params) throws IOException {
325 if (ch == '$' && params.length > 0) {
326 int cnt = is.read() - '0';
327 if (baseURL != null && cnt == 'U' - '0') {
328 os.write(baseURL.getBytes("UTF-8"));
330 if (cnt >= 0 && cnt < params.length) {
331 os.write(params[cnt].getBytes("UTF-8"));
343 private Object[] launchServerAndBrwsr(HttpServer server, final String page) throws IOException, URISyntaxException, InterruptedException {
345 NetworkListener listener = server.getListeners().iterator().next();
346 int port = listener.getPort();
348 URI uri = new URI("http://localhost:" + port + page);
349 LOG.log(Level.INFO, "Showing {0}", uri);
352 LOG.log(Level.INFO, "Trying Desktop.browse on {0} {2} by {1}", new Object[] {
353 System.getProperty("java.vm.name"),
354 System.getProperty("java.vm.vendor"),
355 System.getProperty("java.vm.version"),
357 java.awt.Desktop.getDesktop().browse(uri);
358 LOG.log(Level.INFO, "Desktop.browse successfully finished");
360 } catch (UnsupportedOperationException ex) {
361 LOG.log(Level.INFO, "Desktop.browse not supported: {0}", ex.getMessage());
362 LOG.log(Level.FINE, null, ex);
366 String cmdName = cmd == null ? "xdg-open" : cmd;
368 cmdName, uri.toString()
370 LOG.log(Level.INFO, "Launching {0}", Arrays.toString(cmdArr));
371 final Process process = Runtime.getRuntime().exec(cmdArr);
372 return new Object[] { process, null };
375 private static String toUTF8(String value) throws UnsupportedEncodingException {
376 byte[] arr = new byte[value.length()];
377 for (int i = 0; i < arr.length; i++) {
378 arr[i] = (byte)value.charAt(i);
380 return new String(arr, "UTF-8");
383 private static String decodeURL(String s) {
385 int pos = s.indexOf('%');
389 int i = Integer.parseInt(s.substring(pos + 1, pos + 2), 16);
390 s = s.substring(0, pos) + (char)i + s.substring(pos + 2);
394 private void stopServerAndBrwsr(HttpServer server, Object[] brwsr) throws IOException {
398 Process process = (Process)brwsr[0];
401 InputStream stdout = process.getInputStream();
402 InputStream stderr = process.getErrorStream();
403 drain("StdOut", stdout);
404 drain("StdErr", stderr);
408 res = process.waitFor();
409 } catch (InterruptedException ex) {
410 throw new IOException(ex);
412 LOG.log(Level.INFO, "Exit code: {0}", res);
414 deleteTree((File)brwsr[1]);
417 private static void drain(String name, InputStream is) throws IOException {
418 int av = is.available();
420 StringBuilder sb = new StringBuilder();
421 sb.append("v== ").append(name).append(" ==v\n");
423 sb.append((char)is.read());
425 sb.append("\n^== ").append(name).append(" ==^");
426 LOG.log(Level.INFO, sb.toString());
430 private void deleteTree(File file) {
434 File[] arr = file.listFiles();
444 public void close() throws IOException {
448 private class Res implements Bck2Brwsr.Resources {
450 public InputStream get(String resource) throws IOException {
451 for (ClassLoader l : loaders) {
453 Enumeration<URL> en = l.getResources(resource);
454 while (en.hasMoreElements()) {
455 u = en.nextElement();
458 return u.openStream();
461 throw new IOException("Can't find " + resource);
465 private static class Page extends HttpHandler {
466 final String resource;
467 private final String[] args;
468 private final Res res;
470 public Page(Res res, String resource, String... args) {
472 this.resource = resource;
473 this.args = args.length == 0 ? new String[] { "$0" } : args;
477 public void service(Request request, Response response) throws Exception {
478 String r = computePage(request);
479 if (r.startsWith("/")) {
482 String[] replace = {};
483 if (r.endsWith(".html")) {
484 response.setContentType("text/html");
485 LOG.info("Content type text/html");
488 if (r.endsWith(".xhtml")) {
489 response.setContentType("application/xhtml+xml");
490 LOG.info("Content type application/xhtml+xml");
493 OutputStream os = response.getOutputStream();
494 try (InputStream is = res.get(r)) {
495 copyStream(is, os, request.getRequestURL().toString(), replace);
496 } catch (IOException ex) {
497 response.setDetailMessage(ex.getLocalizedMessage());
499 response.setStatus(404);
503 protected String computePage(Request request) {
506 r = request.getHttpHandlerPath();
512 private static class SubTree extends Page {
514 public SubTree(Res res, String resource, String... args) {
515 super(res, resource, args);
519 protected String computePage(Request request) {
520 return resource + request.getHttpHandlerPath();
526 private static class VM extends HttpHandler {
527 private final String bck2brwsr;
529 public VM(Res loader) throws IOException {
530 StringBuilder sb = new StringBuilder();
531 Bck2Brwsr.generate(sb, loader);
533 "(function WrapperVM(global) {"
534 + " function ldCls(res) {\n"
535 + " var request = new XMLHttpRequest();\n"
536 + " request.open('GET', '/classes/' + res, false);\n"
537 + " request.send();\n"
538 + " if (request.status !== 200) return null;\n"
539 + " var arr = eval('(' + request.responseText + ')');\n"
542 + " var prevvm = global.bck2brwsr;\n"
543 + " global.bck2brwsr = function() {\n"
544 + " var args = Array.prototype.slice.apply(arguments);\n"
545 + " args.unshift(ldCls);\n"
546 + " return prevvm.apply(null, args);\n"
550 this.bck2brwsr = sb.toString();
554 public void service(Request request, Response response) throws Exception {
555 response.setCharacterEncoding("UTF-8");
556 response.setContentType("text/javascript");
557 response.getWriter().write(bck2brwsr);
561 private static class Classes extends HttpHandler {
562 private final Res loader;
564 public Classes(Res loader) {
565 this.loader = loader;
569 public void service(Request request, Response response) throws Exception {
570 String res = request.getHttpHandlerPath();
571 if (res.startsWith("/")) {
572 res = res.substring(1);
574 try (InputStream is = loader.get(res)) {
575 response.setContentType("text/javascript");
576 Writer w = response.getWriter();
578 for (int i = 0;; i++) {
592 w.append(Integer.toString(b));
595 } catch (IOException ex) {
596 response.setStatus(HttpStatus.NOT_FOUND_404);
598 response.setDetailMessage(ex.getMessage());