Changes to configure insecure endpoint and send notification thorugh the stream

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/service/api/NotificationManagementService.java

@@ -29,6 +29,10 @@ import javax.validation.constraints.Size;
 import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
+import javax.ws.rs.core.StreamingOutput;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
 
 /**
  * Notifications related REST-API.
@@ -64,6 +68,13 @@ import javax.ws.rs.core.Response;
                         key = "dm:notif:mark-checked",
                         roles = {"Internal/devicemgt-user"},
                         permissions = {"/device-mgt/notifications/update"}
+                ),
+                @Scope(
+                        name = "Streaming Device Notifications",
+                        description = "Real-time streaming of device notifications",
+                        key = "dm:notifications:stream",
+                        roles = {"Internal/devicemgt-user"},
+                        permissions = {"/device-mgt/notifications/stream"}
                 )
         }
 )
@@ -226,4 +237,48 @@ public interface NotificationManagementService {
             }
     )
     Response clearAllNotifications();
+
+    /**
+     * SSE endpoint to send real-time notifications to the client.
+     * @return StreamingOutput for SSE response.
+     */
+    @GET
+    @Path("/stream")
+    @Produces("text/event-stream")
+    @ApiOperation(
+            value = "Stream Real-Time Notifications",
+            notes = "Streams real-time notifications to the client via Server-Sent Events.",
+            response = StreamingOutput.class,
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = "scope", value = "dm:notifications:stream")
+                    })
+            }
+    )
+    default Response streamNotifications() {
+        StreamingOutput streamingOutput = new StreamingOutput() {
+            public void write(OutputStream output) throws IOException {
+                String notification = "data: {\"message\": \"New Notification\"}\n\n";
+                while (true) {
+                    try {
+                        System.out.println("Sending the notification: " + notification);
+                        output.write(notification.getBytes(StandardCharsets.UTF_8));
+                        output.flush();
+
+                        Thread.sleep(5000);
+                    } catch (InterruptedException e) {
+                        break;
+                    }
+                }
+            }
+        };
+
+        return Response.ok(streamingOutput)
+                .header("Cache-Control", "no-cache")
+                .header("Connection", "keep-alive")
+                .header("Content-Type", "text/event-stream;charset=UTF-8")
+                .header("Access-Control-Allow-Origin", "*")
+                .build();
+    }
 }
+

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/webapp/WEB-INF/web.xml

@@ -52,6 +52,7 @@
             /api/device-mgt/v1.0/whitelabel/.*/favicon,
             /api/device-mgt/v1.0/whitelabel/.*/logo,
             /api/device-mgt/v1.0/whitelabel/.*/icon,
+            /api/device-mgt/v1.0/notifications/stream
         </param-value>
     </context-param>
 

components/device-mgt/io.entgra.device.mgt.core.device.mgt.common/pom.xml

@@ -129,6 +129,37 @@
             <groupId>org.wso2.orbit.javax.xml.bind</groupId>
             <artifactId>jaxb-api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>4.3.24.RELEASE</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>4.3.24.RELEASE</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.ws.rs</groupId>
+            <artifactId>javax.ws.rs-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.hk2.external</groupId>
+            <artifactId>javax.inject</artifactId>
+            <version>2.2.0-b21</version>
+            <scope>compile</scope>
+        </dependency>
+
 
     </dependencies>
 

components/device-mgt/io.entgra.device.mgt.core.device.mgt.common/src/main/java/io/entgra/device/mgt/core/device/mgt/common/notification/mgt/NotificationWorker.java

@@ -1,49 +0,0 @@
-package io.entgra.device.mgt.core.device.mgt.common.notification.mgt;
-
-import java.util.concurrent.*;
-
-public class NotificationWorker {
-    private final BlockingQueue<Notification> taskQueue;
-    private final ThreadPoolExecutor executor;
-    private boolean isInitialized = false;
-
-    public NotificationWorker() {
-        this.taskQueue = new LinkedBlockingQueue<>();
-        this.executor = new ThreadPoolExecutor(2, 4, 60L, TimeUnit.SECONDS, new LinkedBlockingQueue<>());
-    }
-
-    private synchronized void startWorker() {
-        if (!isInitialized) {
-            isInitialized = true;
-            System.out.println("Notification Service Worker Thread initialized.");
-
-            executor.submit(() -> {
-                try {
-                    while (true) {
-                        Notification nextTask = taskQueue.take();
-                        System.out.println("New task added; processing in a separate thread.");
-                        executor.submit(() -> processNotification(nextTask));
-                    }
-                } catch (InterruptedException e) {
-                    Thread.currentThread().interrupt();
-                    System.out.println("Notification processing thread was interrupted, terminating.");
-                }
-            });
-        }
-    }
-
-    public synchronized void addNotificationTask(Notification notification) {
-        taskQueue.offer(notification);
-        startWorker();
-    }
-
-    private void processNotification(Notification notification) {
-        try {
-            System.out.println("Processing task: " + notification);
-        } catch (Exception e) {
-            System.err.println("Failed to process notification: " + notification + " due to " + e.getMessage());
-        }
-        //The logic should be included in the service layer it will be moved in the relevant milestone --> SSE through notification service
-    }
-
-}

features/device-mgt/io.entgra.device.mgt.core.device.mgt.basics.feature/src/main/resources/conf/mdm-ui-config.xml

@@ -428,6 +428,7 @@
         <Scope>dm:admin:cea:sync</Scope>
         <Scope>am:pub:app:upload</Scope>
         <Scope>dm:devices:ops:status:update</Scope>
+        <Scope>dm:notifications:stream</Scope>
     </Scopes>
     <SSOConfiguration>
         <Issuer>device-mgt</Issuer>