Introduce websockets codestart

(cherry picked from commit 2d55d09)

devtools/project-core-extension-codestarts/src/main/resources/codestarts/quarkus/extension-codestarts/websockets-codestart/codestart.yml

@@ -0,0 +1,12 @@
+name: websockets-codestart
+ref: websockets
+type: code
+tags: extension-codestart
+metadata:
+  title: WebSockets
+  description: WebSocket communication channel starter code
+  related-guide-section: https://quarkus.io/guides/websockets
+language:
+  base:
+    dependencies:
+      - io.quarkus:quarkus-websockets

devtools/project-core-extension-codestarts/src/main/resources/codestarts/quarkus/extension-codestarts/websockets-codestart/java/src/main/java/org/acme/StartWebSocket.java

@@ -0,0 +1,55 @@
+package ilove.quark.us;
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.websocket.EncodeException;
+import javax.websocket.OnClose;
+import javax.websocket.OnError;
+import javax.websocket.OnMessage;
+import javax.websocket.OnOpen;
+import javax.websocket.Session;
+import javax.websocket.server.PathParam;
+import javax.websocket.server.ServerEndpoint;
+import java.io.IOException;
+
+import static java.util.Objects.requireNonNull;
+
+@ServerEndpoint("/start-websocket/{name}")
+@ApplicationScoped
+public class StartWebSocket {
+
+    @OnOpen
+    public void onOpen(Session session, @PathParam("name") String name) {
+        System.out.println("onOpen> " + name);
+    }
+
+    @OnClose
+    public void onClose(Session session, @PathParam("name") String name) {
+        System.out.println("onClose> " + name);
+    }
+
+    @OnError
+    public void onError(Session session, @PathParam("name") String name, Throwable throwable) {
+        System.out.println("onError> " + name + ": " + throwable);
+    }
+
+    @OnMessage
+    public void onMessage(String message, @PathParam("username") String name) {
+        System.out.println("onMessage> " + name + ": " + message);
+    }
+
+    /**
+     * Send a message to a remote websocket session
+     *
+     * @param session the websocket session
+     * @param message the message to send
+     * @throws IOException              if there is a communication error sending the message object.
+     * @throws EncodeException          if there was a problem encoding the message.
+     * @throws IllegalArgumentException if the message parameter is {@code null}
+     */
+    public void sendMessage(Session session, String message) throws EncodeException, IOException {
+        requireNonNull(session, "session is required");
+
+        session.getBasicRemote().sendObject(message);
+    }
+
+}

devtools/project-core-extension-codestarts/src/main/resources/codestarts/quarkus/extension-codestarts/websockets-codestart/kotlin/src/main/kotlin/org/acme/StartWebSocket.kt

@@ -0,0 +1,45 @@
+package ilove.quark.us
+
+import java.io.IOException
+import javax.enterprise.context.ApplicationScoped
+import javax.websocket.*
+import javax.websocket.server.PathParam
+import javax.websocket.server.ServerEndpoint
+
+@ServerEndpoint("/start-websocket/{name}")
+@ApplicationScoped
+class StartWebSocket {
+
+    @OnOpen
+    fun onOpen(session: Session?, @PathParam("name") name: String) {
+        println("onOpen> $name")
+    }
+
+    @OnClose
+    fun onClose(session: Session?, @PathParam("name") name: String) {
+        println("onClose> $name")
+    }
+
+    @OnError
+    fun onError(session: Session?, @PathParam("name") name: String, throwable: Throwable) {
+        println("onError> $name: $throwable")
+    }
+
+    @OnMessage
+    fun onMessage(message: String, @PathParam("username") name: String) {
+        println("onMessage> $name: $message")
+    }
+
+    /**
+     * Send a message to a remote websocket session
+     *
+     * @param session the websocket session
+     * @param message the message to send
+     * @throws IOException              if there is a communication error sending the message object.
+     * @throws EncodeException          if there was a problem encoding the message.
+     */
+    @Throws(EncodeException::class, IOException::class)
+    fun sendMessage(session: Session, message: String) {
+        session.basicRemote.sendObject(message)
+    }
+}

extensions/websockets/server/runtime/src/main/resources/META-INF/quarkus-extension.yaml

@@ -13,9 +13,10 @@ metadata:
   - "web"
   status: "stable"
   codestart:
-    name: "undertow-websockets"
-    kind: "example"
-    languages: "java"
+    name: "websockets"
+    languages: 
+    - "java"
+    - "kotlin"
     artifact: "io.quarkus:quarkus-project-core-extension-codestarts"
   config:
   - "quarkus.websocket."