Provide a modern standalone selenium server.

This moves us on to a forked version of Jetty (which others should
not rely on) and removes original RC support. However, if the emulator
servlet is detected on the classpath, it is loaded and used within
this server instance.

Build with:

  `buck build se3-server`

.buckconfig

@@ -30,3 +30,5 @@
   leg-rc        = //java/client/src/com/thoughtworks/selenium:legacy-selenium-client
   rc-server     = //java/server/src/org/openqa/selenium/server:rc
   selenium-java = //java/client/src/org/openqa/selenium:selenium-java
+
+  se3-server    = //java/server/src/org/openqa/selenium/remote/server:standalone-server

java/server/server.iml

@@ -15,6 +15,7 @@
     <orderEntry type="library" name="commons-io" level="project" />
     <orderEntry type="library" name="commons-logging" level="project" />
     <orderEntry type="library" name="jcip-annotations" level="project" />
+    <orderEntry type="library" name="jcommander" level="project" />
     <orderEntry type="library" name="jetty" level="project" />
     <orderEntry type="library" name="jetty-for-rc" level="project" />
     <orderEntry type="library" name="junit" level="project" />

java/server/src/org/openqa/selenium/remote/server/BUCK

@@ -79,3 +79,31 @@ export_file(name = 'style',
   src = '//javascript/remote:style',
   out = 'style.css',
 )
+
+java_library(name = 'standalone-server-lib',
+  srcs = [
+    'CommandLineArgs.java',
+    'SeleniumServer.java',
+  ],
+  deps = [
+    ':server',
+    '//third_party/java/beust:jcommander',
+    '//third_party/java/jetty:jetty',
+    '//third_party/java/servlet:servlet-api',
+  ],
+)
+
+java_binary(name = 'standalone-server',
+  main_class = 'org.openqa.selenium.remote.server.SeleniumServer',
+  deps = [
+    ':standalone-server-lib',
+    '//java/client/src/org/openqa/selenium/chrome:chrome',
+    '//java/client/src/org/openqa/selenium/edge:edge',
+    '//java/client/src/org/openqa/selenium/firefox:firefox',
+    '//java/client/src/org/openqa/selenium/htmlunit:htmlunit',
+    '//java/client/src/org/openqa/selenium/ie:ie',
+    '//java/client/src/org/openqa/selenium/opera:opera',
+    '//java/client/src/org/openqa/selenium/safari:safari',
+    '//java/server/src/com/thoughtworks/selenium/webdriven:rc-emulation-servlet',
+  ],
+)

java/server/src/org/openqa/selenium/remote/server/CommandLineArgs.java

@@ -0,0 +1,35 @@
+package org.openqa.selenium.remote.server;
+
+import com.beust.jcommander.Parameter;
+
+/**
+ * Command line args for the selenium server.
+ */
+public class CommandLineArgs {
+  @Parameter(
+    names = {"--help", "-help", "-h"},
+    help = true,
+    hidden = true,
+    description = "This help.")
+  boolean help;
+
+  @Parameter(
+    names = "-browserTimeout",
+    description = "Number of seconds a browser is allowed to hang (0 means indefinite).")
+  int browserTimeout;
+
+  @Parameter(
+    names = "-jettyThreads",
+    hidden = true)
+  int jettyThreads;
+
+  @Parameter(
+    names = {"-port"},
+    description = "The port number the selenium server should use.")
+  int port = 4444;
+
+  @Parameter(
+    names = "-timeout",
+    description = "Number of seconds we should allow a client to be idle (0 means indefinite).")
+  int timeout;
+}

java/server/src/org/openqa/selenium/remote/server/SeleniumServer.java

@@ -0,0 +1,95 @@
+package org.openqa.selenium.remote.server;
+
+import com.beust.jcommander.JCommander;
+
+import org.seleniumhq.jetty9.server.Connector;
+import org.seleniumhq.jetty9.server.HttpConfiguration;
+import org.seleniumhq.jetty9.server.HttpConnectionFactory;
+import org.seleniumhq.jetty9.server.Server;
+import org.seleniumhq.jetty9.server.ServerConnector;
+import org.seleniumhq.jetty9.servlet.ServletContextHandler;
+import org.seleniumhq.jetty9.util.thread.QueuedThreadPool;
+
+import javax.servlet.Servlet;
+
+/**
+ * Provides a server that can launch and manage selenium sessions.
+ */
+public class SeleniumServer {
+
+  private final int port;
+  private int threadCount;
+  private Server server;
+
+  public SeleniumServer(int port) {
+    this.port = port;
+  }
+
+  private void addRcSupport(ServletContextHandler handler) {
+    try {
+      Class<? extends Servlet> rcServlet = Class.forName(
+        "com.thoughtworks.selenium.webdriven.WebDriverBackedSeleniumServlet",
+        false,
+        getClass().getClassLoader())
+        .asSubclass(Servlet.class);
+      handler.addServlet(rcServlet, "/selenium-server/driver/");
+    } catch (ClassNotFoundException e) {
+      // Do nothing.
+    }
+  }
+
+  private void setThreadCount(int threadCount) {
+    this.threadCount = threadCount;
+  }
+
+  public void start() {
+    if (threadCount > 0) {
+      server = new Server(new QueuedThreadPool(threadCount));
+    } else {
+      server = new Server();
+    }
+
+    ServletContextHandler handler = new ServletContextHandler();
+
+    DefaultDriverSessions webdriverSessions = new DefaultDriverSessions();
+    handler.setAttribute(DriverServlet.SESSIONS_KEY, webdriverSessions);
+    handler.setContextPath("/");
+    handler.addServlet(DriverServlet.class, "/wd/hub/*");
+    addRcSupport(handler);
+
+    server.setHandler(handler);
+
+    HttpConfiguration httpConfig = new HttpConfiguration();
+    httpConfig.setSecureScheme("https");
+
+    ServerConnector http = new ServerConnector(server, new HttpConnectionFactory(httpConfig));
+    http.setPort(port);
+    http.setIdleTimeout(500000);
+
+    server.setConnectors(new Connector[]{http});
+
+    try {
+      server.start();
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  public static void main(String[] argv) {
+    CommandLineArgs args = new CommandLineArgs();
+    JCommander jCommander = new JCommander(args, argv);
+    jCommander.setProgramName("selenium-3-server");
+
+    if (args.help) {
+      StringBuilder message = new StringBuilder();
+      jCommander.usage(message);
+      System.err.println(message.toString());
+      return;
+    }
+
+    SeleniumServer server = new SeleniumServer(args.port);
+    server.setThreadCount(args.jettyThreads);
+    server.start();
+  }
+
+}

third_party/java/beust/BUCK

@@ -4,6 +4,7 @@ prebuilt_jar(
   binary_jar = 'jcommander-1.48.jar',
   source_jar = 'jcommander-1.48-sources.jar',
   visibility = [
+    '//java/server/src/org/openqa/selenium/remote/server:standalone-server-lib',
     '//third_party/java/testng:testng'
   ],
 )

third_party/java/jetty/BUCK

@@ -15,6 +15,7 @@ java_library(
   ],
   visibility = [
     '//java/client/test/org/openqa/selenium/environment:environment',
+    '//java/server/src/org/openqa/selenium/remote/server:standalone-server-lib',
     '//java/server/src/org/openqa/grid:grid',
     '//java/server/test/com/thoughtworks/selenium/webdriven:webdriven',
   ],