feat: add initial fusion endpoint implementation

Author: mlopezFC

pom.xml

@@ -107,7 +107,12 @@
                 </exclusion>
             </exclusions>
         </dependency>
-        
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>5.3.0</version>
+            <optional>true</optional>
+        </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-simple</artifactId>
@@ -224,6 +229,16 @@
     <profiles>
         <profile>
             <id>directory</id>
+            <properties>
+                <vaadin.productionMode>true</vaadin.productionMode>
+            </properties>
+            <dependencies>
+                <dependency>
+                    <groupId>com.vaadin</groupId>
+                    <artifactId>flow-server-production-mode</artifactId>
+                    <optional>true</optional>
+                </dependency>
+            </dependencies>
             <build>
                 <plugins>
                     <plugin>
@@ -277,14 +292,49 @@
                             <additionalparam>-Xdoclint:none</additionalparam>
                         </configuration>
                     </plugin>
+                    <plugin>
+                        <groupId>com.vaadin</groupId>
+                        <artifactId>vaadin-maven-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <goals>
+                                    <goal>prepare-frontend</goal>
+                                    <goal>build-frontend</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                    <plugin>
+                        <artifactId>maven-resources-plugin</artifactId>
+                        <version>3.2.0</version>
+                        <executions>
+                            <execution>
+                            <id>copy-resources</id>
+                            <!-- here the phase you need -->
+                            <phase>validate</phase>
+                            <goals>
+                                <goal>copy-resources</goal>
+                            </goals>
+                            <configuration>
+                                <outputDirectory>${basedir}/target/classes/META-INF/frontend</outputDirectory>
+                                <resources>          
+                                <resource>
+                                    <directory>frontend</directory>
+                                    <filtering>true</filtering>
+                                </resource>
+                                </resources>              
+                            </configuration>            
+                            </execution>
+                        </executions>
+                    </plugin>
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-jar-plugin</artifactId>
                         <version>3.1.2</version>
                         <configuration>
                             <!-- Generated file that shouldn't be included in add-ons -->
                             <excludes>
-                                <exclude>META-INF/VAADIN/config/flow-build-info.json</exclude>
+                                <exclude>META-INF/VAADIN/**/*.*</exclude>
                             </excludes>
                         </configuration>
                     </plugin>

src/main/java/com/flowingcode/addons/applayout/endpoint/MenuEndpoint.java

@@ -0,0 +1,23 @@
+package com.flowingcode.addons.applayout.endpoint;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import com.vaadin.flow.server.auth.AnonymousAllowed;
+import com.vaadin.flow.server.connect.Endpoint;
+
+@Endpoint
+@AnonymousAllowed
+public class MenuEndpoint {
+    
+    List<MenuItemsProvider> menuItemsProviders;
+
+    public MenuEndpoint(List<MenuItemsProvider> menuItemsProviders) {
+        this.menuItemsProviders = menuItemsProviders;
+    }
+
+    public List<MenuItemDto> getMenuItems() {
+        return menuItemsProviders.stream().map(mip->mip.getMenuItems()).flatMap(List::stream).collect(Collectors.toList());
+    }
+
+}

src/main/java/com/flowingcode/addons/applayout/endpoint/MenuItemDto.java

@@ -0,0 +1,50 @@
+package com.flowingcode.addons.applayout.endpoint;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.annotation.Nullable;
+
+public class MenuItemDto {
+
+    private String label;
+    @Nullable
+    private String href;
+    private List<MenuItemDto> children = new ArrayList<>();
+
+    public MenuItemDto(String label, List<MenuItemDto> children) {
+        this(label,null,children);
+    }
+
+    public MenuItemDto(String label, String href) {
+        this(label,href,new ArrayList<>());
+    }
+
+    public MenuItemDto(String label, String href, List<MenuItemDto> children) {
+        this.label = label;
+        this.href = href;
+        this.children = children;
+    }
+
+    public List<MenuItemDto> getChildren() {
+        return children;
+    }
+
+    public void setChildren(List<MenuItemDto> children) {
+        this.children = children;
+    }
+
+    public String getLabel() {
+        return label;
+    }
+    public String getHref() {
+        return href;
+    }
+    public void setHref(String href) {
+        this.href = href;
+    }
+    public void setLabel(String label) {
+        this.label = label;
+    }
+
+}

src/main/java/com/flowingcode/addons/applayout/endpoint/MenuItemsProvider.java

@@ -0,0 +1,10 @@
+package com.flowingcode.addons.applayout.endpoint;
+
+import java.util.List;
+
+@FunctionalInterface
+public interface MenuItemsProvider {
+
+    List<MenuItemDto> getMenuItems();
+    
+}

src/main/java/com/flowingcode/addons/applayout/listener/RegisterEndpointServiceInitListener.java

@@ -0,0 +1,51 @@
+package com.flowingcode.addons.applayout.listener;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import com.flowingcode.addons.applayout.endpoint.MenuEndpoint;
+import com.vaadin.flow.server.ServiceInitEvent;
+import com.vaadin.flow.server.VaadinServiceInitListener;
+import com.vaadin.flow.server.connect.Endpoint;
+import com.vaadin.flow.server.connect.EndpointRegistry;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.stereotype.Component;
+
+@Component
+public class RegisterEndpointServiceInitListener implements VaadinServiceInitListener, ApplicationContextAware {
+
+    private ApplicationContext context;
+    
+    @Autowired
+    private EndpointRegistry endpointRegistry;
+
+    @Override
+    public void serviceInit(ServiceInitEvent event) {
+        context.getBeansWithAnnotation(Endpoint.class)
+                .forEach((name, endpointBean) -> {
+                    if (endpointBean instanceof MenuEndpoint) {
+                        registerEndpoint(endpointBean);
+                    }
+                });
+    }
+
+    private void registerEndpoint(Object endpointBean) {
+        try {
+            Method m = EndpointRegistry.class.getDeclaredMethod("registerEndpoint", Object.class);
+            m.setAccessible(true);
+            m.invoke(endpointRegistry, endpointBean);
+        } catch (NoSuchMethodException | SecurityException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
+            throw new RuntimeException("Problem registering endpoint",e);
+        }
+    }
+
+    @Override
+    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+        this.context = applicationContext;
+    }
+    
+}