Added validation for app name length when creating an app

Co-authored-by: Ravindu Madhubhashana <ravindu.kp@gmail.com>
Co-committed-by: Ravindu Madhubhashana <ravindu.kp@gmail.com>

components/application-mgt/io.entgra.application.mgt.core/src/main/java/io/entgra/application/mgt/core/impl/ApplicationManagerImpl.java

@@ -3434,6 +3434,7 @@ public class ApplicationManagerImpl implements ApplicationManager {
         String userName = PrivilegedCarbonContext.getThreadLocalCarbonContext().getUsername();
         int deviceTypeId = -1;
         String appName;
+        int appNameLength = 20;
         List<String> appCategories;
         List<String> unrestrictedRoles;
 
@@ -3445,6 +3446,11 @@ public class ApplicationManagerImpl implements ApplicationManager {
                 log.error(msg);
                 throw new BadRequestException(msg);
             }
+            if (appName.length() > appNameLength) {
+                String msg = "Application name must be less than or equal to 20 characters in length.";
+                log.error(msg);
+                throw new BadRequestException(msg);
+            }
             appCategories = applicationWrapper.getCategories();
             if (appCategories == null) {
                 String msg = "Application category can't be null.";
@@ -3477,6 +3483,11 @@ public class ApplicationManagerImpl implements ApplicationManager {
                 log.error(msg);
                 throw new BadRequestException(msg);
             }
+            if (appName.length() > appNameLength) {
+                String msg = "Application name must be less than or equal to 20 characters in length.";
+                log.error(msg);
+                throw new BadRequestException(msg);
+            }
             appCategories = webAppWrapper.getCategories();
             if (appCategories == null) {
                 String msg = "Web Clip category can't be null.";
@@ -3510,6 +3521,11 @@ public class ApplicationManagerImpl implements ApplicationManager {
                 log.error(msg);
                 throw new BadRequestException(msg);
             }
+            if (appName.length() > appNameLength) {
+                String msg = "Application name must be less than or equal to 20 characters in length.";
+                log.error(msg);
+                throw new BadRequestException(msg);
+            }
             appCategories = publicAppWrapper.getCategories();
             if (appCategories == null) {
                 String msg = "Application category can't be null.";
@@ -3542,6 +3558,11 @@ public class ApplicationManagerImpl implements ApplicationManager {
                 log.error(msg);
                 throw new BadRequestException(msg);
             }
+            if (appName.length() > appNameLength) {
+                String msg = "Application name must be less than or equal to 20 characters in length.";
+                log.error(msg);
+                throw new BadRequestException(msg);
+            }
             appCategories = customAppWrapper.getCategories();
             if (appCategories == null) {
                 String msg = "Application category can't be null.";

components/application-mgt/io.entgra.application.mgt.publisher.api/src/main/java/io/entgra/application/mgt/publisher/api/services/impl/ApplicationManagementPublisherAPIImpl.java

@@ -371,19 +371,28 @@ public class ApplicationManagementPublisherAPIImpl implements ApplicationManagem
             if (appName == null) {
                 String msg = "Invalid app name, appName query param cannot be empty/null.";
                 log.error(msg);
-                return Response.status(Response.Status.BAD_REQUEST).build();
+                return Response.status(Response.Status.BAD_REQUEST).entity(msg).build();
+            }
+            if (appName.length() > 20) {
+                String msg = "Invalid app name, maximum length of the application name should be 20 characters.";
+                log.error(msg);
+                return Response.status(Response.Status.BAD_REQUEST).entity(msg).build();
             }
             ApplicationManager applicationManager = APIUtil.getApplicationManager();
             if (applicationManager.isExistingAppName(appName, deviceType)) {
-                return Response.status(Response.Status.CONFLICT).build();
+                String msg = "Invalid app name, app name already exists.";
+                log.error(msg);
+                return Response.status(Response.Status.CONFLICT).entity(msg).build();
             }
             return Response.status(Response.Status.OK).build();
         } catch (BadRequestException e) {
-            log.error("Found invalid device type to check application existence.", e);
-            return Response.status(Response.Status.BAD_REQUEST).build();
+            String msg = "Found invalid device type to check application existence.";
+            log.error(msg, e);
+            return Response.status(Response.Status.BAD_REQUEST).entity(msg).build();
         } catch (ApplicationManagementException e) {
-            log.error("Internal Error occurred while checking the application existence.", e);
-            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
+            String msg = "Internal Error occurred while checking the application existence.";
+            log.error(msg, e);
+            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(msg).build();
         }
     }