Remove Google App Engine support, tests and documentation (#8034)

* Remove Google App Engine support and tests

Fixes #8033

compatibility-server/pom.xml

             <scope>provided</scope>
             <optional>true</optional>
         </dependency>
+
+        <!-- Google App Engine -->
+        <dependency>
+            <groupId>com.google.appengine</groupId>
+            <artifactId>appengine-api-1.0-sdk</artifactId>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 
     <build>

server/src/main/java/com/vaadin/server/GAEVaadinServlet.java → compatibility-server/src/main/java/com/vaadin/server/GAEVaadinServlet.java

  * <li/>The application remains locked while uploading - no progressbar is
  * possible.
  * </ul>
+ *
+ * @deprecated No longer supported with Vaadin 8.0
  */
+@Deprecated
 public class GAEVaadinServlet extends VaadinServlet {
 
     // memcache mutex is MUTEX_BASE + sessio id
 
             String id = AC_BASE + session.getId();
             Date expire = new Date(
-                    started + (getMaxInactiveIntervalSeconds(session) * 1000));
+                    started + getMaxInactiveIntervalSeconds(session) * 1000);
             Expiration expires = Expiration.onDate(expire);
 
             memcache.put(id, bytes, expires);

compatibility-server/src/main/java/com/vaadin/v7/data/util/MethodProperty.java

 import java.util.logging.Logger;
 
 import com.vaadin.shared.util.SharedUtil;
-import com.vaadin.util.SerializerHelper;
 import com.vaadin.v7.data.Property;
+import com.vaadin.v7.util.SerializerHelper;
 
 /**
  * <p>

compatibility-server/src/main/java/com/vaadin/v7/data/util/MethodPropertyDescriptor.java

 import java.util.logging.Logger;
 
 import com.vaadin.util.ReflectTools;
-import com.vaadin.util.SerializerHelper;
 import com.vaadin.v7.data.Property;
+import com.vaadin.v7.util.SerializerHelper;
 
 /**
  * Property descriptor that is able to create simple {@link MethodProperty}

server/src/main/java/com/vaadin/util/SerializerHelper.java → compatibility-server/src/main/java/com/vaadin/v7/util/SerializerHelper.java

  * License for the specific language governing permissions and limitations under
  * the License.
  */
-package com.vaadin.util;
+package com.vaadin.v7.util;
 
 import java.io.IOException;
 import java.io.ObjectInputStream;
  * should not be used by application developers. Subject to change at any time.
  *
  * @since 6.0
+ * @deprecated Only used for compatibility-server
  */
+@Deprecated
 public class SerializerHelper {
 
     /**
      * List of primitive classes. Google App Engine has problems
      * serializing/deserializing these (#3064).
      */
-    private static final Class<?>[] primitiveClasses = new Class<?>[] { byte.class,
-            short.class, int.class, long.class, float.class, double.class,
-            boolean.class, char.class };
+    private static final Class<?>[] primitiveClasses = new Class<?>[] {
+            byte.class, short.class, int.class, long.class, float.class,
+            double.class, boolean.class, char.class };
 
     /**
      * Resolves the class given by {@code className}.

server/pom.xml

             <scope>provided</scope>
         </dependency>
 
-        <!-- Google App Engine -->
-        <dependency>
-            <groupId>com.google.appengine</groupId>
-            <artifactId>appengine-api-1.0-sdk</artifactId>
-            <scope>provided</scope>
-        </dependency>
-
         <!-- Bean Validation API -->
         <dependency>
             <groupId>javax.validation</groupId>

server/src/main/java/com/vaadin/server/VaadinServlet.java

      * Gets the currently used Vaadin servlet. The current servlet is
      * automatically defined when initializing the servlet and when processing
      * requests to the server (see {@link ThreadLocal}) and in
-     * {@link VaadinSession#access(Runnable)} and {@link UI#access(Runnable)}. In
-     * other cases, (e.g. from background threads), the current servlet is not
-     * automatically defined.
+     * {@link VaadinSession#access(Runnable)} and {@link UI#access(Runnable)}.
+     * In other cases, (e.g. from background threads), the current servlet is
+     * not automatically defined.
      * <p>
      * The current servlet is derived from the current service using
      * {@link VaadinService#getCurrent()}
      *             if the writing failed due to input/output error.
      *
      * @deprecated As of 7.0. This method is retained only for backwards
-     *             compatibility and for {@link GAEVaadinServlet}.
+     *             compatibility and for GAEVaadinServlet.
      */
     @Deprecated
     protected void criticalNotification(VaadinServletRequest request,
         }
         response.setHeader("Cache-Control", cacheControl);
         response.setDateHeader("Expires",
-                System.currentTimeMillis() + (resourceCacheTime * 1000));
+                System.currentTimeMillis() + resourceCacheTime * 1000);
 
         // Find the modification timestamp
         long lastModifiedTime = 0;
             throws MalformedURLException {
         final URL reqURL = new URL((request.isSecure() ? "https://" : "http://")
                 + request.getServerName()
-                + ((request.isSecure() && request.getServerPort() == 443)
-                        || (!request.isSecure()
-                                && request.getServerPort() == 80) ? ""
-                                        : ":" + request.getServerPort())
+                + (request.isSecure() && request.getServerPort() == 443
+                        || !request.isSecure() && request.getServerPort() == 80
+                                ? "" : ":" + request.getServerPort())
                 + request.getRequestURI());
         String servletPath = "";
         if (request

uitest/ivy.xml

             rev="1.0.0.GA" conf="build -> default,sources" />
         <dependency org="org.hibernate" name="hibernate-validator"
             rev="4.2.0.Final" conf="build -> default" />
-        <!-- Google App Engine -->
-        <dependency org="com.google.appengine" name="appengine-api-1.0-sdk"
-            rev="1.7.7" conf="build-provided -> default" />
 
         <!-- LIBRARY DEPENDENCIES (compile time) -->
         <!-- Project modules -->

uitest/pom.xml

             <groupId>org.hibernate</groupId>
             <artifactId>hibernate-validator</artifactId>
         </dependency>
-        <!-- Google App Engine -->
-        <dependency>
-            <groupId>com.google.appengine</groupId>
-            <artifactId>appengine-api-1.0-sdk</artifactId>
-            <scope>provided</scope>
-        </dependency>
 
         <!-- jetty-servlets needed by ProxyTest, but not by jetty-runner -->
         <!-- Jetty before vaadin-* on the classpath to make Eclipse use the 

uitest/src/main/java/com/vaadin/tests/appengine/GAESyncTest.java

-package com.vaadin.tests.appengine;
-
-import com.google.apphosting.api.DeadlineExceededException;
-import com.vaadin.server.ClassResource;
-import com.vaadin.server.DownloadStream;
-import com.vaadin.server.LegacyApplication;
-import com.vaadin.ui.Button;
-import com.vaadin.ui.Button.ClickEvent;
-import com.vaadin.ui.Embedded;
-import com.vaadin.ui.GridLayout;
-import com.vaadin.ui.Label;
-import com.vaadin.ui.LegacyWindow;
-import com.vaadin.ui.Notification;
-import com.vaadin.v7.data.Property;
-import com.vaadin.v7.data.Property.ValueChangeEvent;
-import com.vaadin.v7.ui.TextField;
-
-public class GAESyncTest extends LegacyApplication {
-
-    /**
-     *
-     */
-    private static final long serialVersionUID = -3724319151122707926l;
-
-    @Override
-    public void init() {
-        setMainWindow(new IntrWindow(this));
-
-    }
-
-    @Override
-    public void error(com.vaadin.server.ErrorEvent event) {
-        Throwable t = event.getThrowable();
-        // Was this caused by a GAE timeout?
-        while (t != null) {
-            if (t instanceof DeadlineExceededException) {
-                getMainWindow().showNotification("Bugger!", "Deadline Exceeded",
-                        Notification.TYPE_ERROR_MESSAGE);
-                return;
-            }
-            t = t.getCause();
-        }
-
-        super.error(event);
-
-    }
-
-    private class IntrWindow extends LegacyWindow {
-        private int n = 0;
-        private static final long serialVersionUID = -6521351715072191625l;
-        TextField tf;
-        Label l;
-        LegacyApplication app;
-        GridLayout gl;
-
-        private IntrWindow(LegacyApplication app) {
-
-            this.app = app;
-            tf = new TextField("Echo thingie");
-            tf.setImmediate(true);
-            tf.addListener(new Property.ValueChangeListener() {
-                @Override
-                public void valueChange(ValueChangeEvent event) {
-                    IntrWindow.this.showNotification(
-                            (String) event.getProperty().getValue());
-
-                }
-
-            });
-            addComponent(tf);
-
-            l = new Label("" + n);
-            addComponent(l);
-
-            {
-                Button b = new Button("Slow", new Button.ClickListener() {
-                    @Override
-                    public void buttonClick(ClickEvent event) {
-                        try {
-                            Thread.sleep(15000);
-                        } catch (InterruptedException e) {
-                            // TODO Auto-generated catch block
-                            e.printStackTrace();
-                        }
-                    }
-
-                });
-                addComponent(b);
-            }
-
-            {
-                Button b = new Button("Add", new Button.ClickListener() {
-
-                    @Override
-                    public void buttonClick(ClickEvent event) {
-                        if (getUI() == getMainWindow()) {
-                            getUI().getPage()
-                                    .showNotification(new Notification("main"));
-                            try {
-                                Thread.sleep((5000));
-                            } catch (InterruptedException e) {
-                                // TODO Auto-generated catch block
-                                e.printStackTrace();
-                            }
-                        }
-                        addImage();
-                    }
-
-                });
-                addComponent(b);
-            }
-
-            gl = new GridLayout(30, 50);
-            addComponent(gl);
-
-        }
-
-        private void addImage() {
-            ClassResource res = new ClassResource("img1.png") {
-
-                private static final long serialVersionUID = 1L;
-
-                @Override
-                public DownloadStream getStream() {
-                    try {
-                        Thread.sleep((long) (Math.random() * 5000));
-                    } catch (InterruptedException e) {
-                        // TODO Auto-generated catch block
-                        e.printStackTrace();
-                    }
-                    return super.getStream();
-                }
-
-            };
-            res.setCacheTime(0);
-            Embedded emb = new Embedded("" + n, res);
-            emb.setWidth("30px");
-            emb.setHeight("5px");
-            gl.addComponent(emb);
-            l.setValue("" + n++);
-        }
-
-    }
-
-    @Override
-    public LegacyWindow getWindow(String name) {
-        LegacyWindow w = super.getWindow(name);
-        if (w == null) {
-            w = new IntrWindow(this);
-            addWindow(w);
-        }
-        return w;
-
-    }
-
-}