Add ExceptionHandler example with latest changes

carstore/pom.xml

@@ -5,15 +5,15 @@
 
     <groupId>com.gwtplatform</groupId>
     <artifactId>carstore</artifactId>
-    <version>1.5</version>
+    <version>1.6-SNAPSHOT</version>
     <packaging>war</packaging>
     <name>GWTP Carstore</name>
     <description>Simple application used for testing GWTP features.</description>
 
     <properties>
         <!-- Client -->
         <gwt.version>2.7.0</gwt.version>
-        <gwtp.version>1.5</gwtp.version>
+        <gwtp.version>1.6-SNAPSHOT</gwtp.version>
         <gin.version>2.1.2</gin.version>
         <gwtquery.version>1.4.2</gwtquery.version>
         <objectify-gwt.version>1.2.1</objectify-gwt.version>
@@ -41,8 +41,8 @@
         <maven-gae-plugin.version>0.9.6</maven-gae-plugin.version>
         <maven-compiler-plugin.version>3.2</maven-compiler-plugin.version>
         <versions-maven-plugin.version>2.1</versions-maven-plugin.version>
-        <maven-failsafe-plugin.version>2.18</maven-failsafe-plugin.version>
-        <maven-surefire-plugin.version>2.18</maven-surefire-plugin.version>
+        <maven-failsafe-plugin.version>2.18.1</maven-failsafe-plugin.version>
+        <maven-surefire-plugin.version>2.18.1</maven-surefire-plugin.version>
         <gwt-maven-plugin.version>2.7.0</gwt-maven-plugin.version>
         <maven-checkstyle-plugin.version>2.14</maven-checkstyle-plugin.version>
 

carstore/src/main/java/com/gwtplatform/carstore/client/dispatch/DispatchExceptionHandler.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2015 ArcBees Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.gwtplatform.carstore.client.dispatch;
+
+import javax.inject.Inject;
+import javax.inject.Provider;
+
+import com.gwtplatform.carstore.client.application.ApplicationPresenter;
+import com.gwtplatform.carstore.client.application.event.DisplayMessageEvent;
+import com.gwtplatform.carstore.client.application.widget.message.Message;
+import com.gwtplatform.carstore.client.application.widget.message.MessageStyle;
+import com.gwtplatform.dispatch.client.ExceptionHandler;
+import com.gwtplatform.dispatch.rest.shared.ActionResponseException;
+import com.gwtplatform.dispatch.rest.shared.RestActionException;
+import com.gwtplatform.dispatch.shared.ActionException;
+
+public class DispatchExceptionHandler implements ExceptionHandler {
+
+    private final Provider<ApplicationPresenter> appPresenterProvider;
+
+    @Inject
+    DispatchExceptionHandler(Provider<ApplicationPresenter> appPresenterProvider) {
+        this.appPresenterProvider = appPresenterProvider;
+    }
+
+    @Override
+    public Status onFailure(Throwable e) {
+        if (e instanceof ActionException) {
+            return handleActionExceptions((ActionException) e);
+        }
+
+        return Status.CONTINUE;
+    }
+
+    private Status handleActionExceptions(ActionException e) {
+        Status status;
+        if (e instanceof RestActionException) {
+            // This is a REST action exception
+            status = handleRestActionExceptions((RestActionException) e);
+        } else {
+            // This is an RPC action exception
+            status = handleRpcActionExceptions(e);
+        }
+
+        return status;
+    }
+
+    private Status handleRestActionExceptions(RestActionException e) {
+        Status status = Status.CONTINUE;
+
+        if (e instanceof ActionResponseException) {
+            // Unauthorized access exception
+            if (((ActionResponseException) e).getStatusCode() == 401) {
+                DisplayMessageEvent.fire(appPresenterProvider.get(), new Message(
+                        "You do not have access to this part of the system.", MessageStyle.ERROR));
+
+                status = Status.STOP;
+            }
+        }
+
+        return status;
+    }
+
+    private Status handleRpcActionExceptions(ActionException e) {
+        return Status.CONTINUE;
+    }
+}

carstore/src/main/java/com/gwtplatform/carstore/client/gin/SharedModule.java

@@ -16,6 +16,7 @@
 
 package com.gwtplatform.carstore.client.gin;
 
+import com.gwtplatform.carstore.client.dispatch.DispatchExceptionHandler;
 import com.gwtplatform.carstore.client.dispatch.rest.AppRestDispatchHooks;
 import com.gwtplatform.carstore.client.dispatch.rest.RestInterceptorRegistry;
 import com.gwtplatform.carstore.client.dispatch.rpc.AppRpcDispatchHooks;
@@ -39,10 +40,12 @@ protected void configure() {
         install(new RestDispatchAsyncModule.Builder()
                 .dispatchHooks(AppRestDispatchHooks.class)
                 .interceptorRegistry(RestInterceptorRegistry.class)
+                .exceptionHandler(DispatchExceptionHandler.class)
                 .build());
         install(new RpcDispatchAsyncModule.Builder()
                 .dispatchHooks(AppRpcDispatchHooks.class)
                 .interceptorRegistry(RpcInterceptorRegistry.class)
+                .exceptionHandler(DispatchExceptionHandler.class)
                 .build());
 
         // CarStore modules

carstore/src/main/java/com/gwtplatform/carstore/server/dispatch/LogInHandler.java

@@ -68,9 +68,9 @@ public LogInResult execute(LogInAction action, ExecutionContext context) throws
             loggedInCookie = loginCookieDao.createSessionCookie(userDto);
         }
 
-        logger.info("LogInHandlerexecut(): actiontype=" + getActionType());
-        logger.info("LogInHandlerexecut(): currentUserDto=" + currentUserDto);
-        logger.info("LogInHandlerexecut(): loggedInCookie=" + loggedInCookie);
+        logger.info("LogInHandler#execute(): actiontype=" + getActionType());
+        logger.info("LogInHandler#execute(): currentUserDto=" + currentUserDto);
+        logger.info("LogInHandler#execute(): loggedInCookie=" + loggedInCookie);
 
         return new LogInResult(action.getActionType(), currentUserDto, loggedInCookie);
     }