components/apimgt-extensions/io.entgra.device.mgt.core.apimgt.webapp.publisher/src/main/java/io/entgra/device/mgt/core/apimgt/webapp/publisher/APIPublisherService.java

@@ -36,8 +36,21 @@ public interface APIPublisherService {
 
     void updateScopeRoleMapping() throws APIManagerPublisherException;
 
+    /**
+     * Add default scopes defined in the cdm-config.xml
+     */
     void addDefaultScopesIfNotExist();
 
-    void updateScopeRoleMapping(String roleName, String[] permissions) throws APIManagerPublisherException;
+    /**
+     * If the permissions are in the permission list, identify the relevant scopes of the supplied permission list
+     * and put the role there; if the permissions are in the removedPermission list, update the relevant scopes by
+     * deleting the role from those scopes.
+     *
+     * @param roleName Role Name
+     * @param permissions List of adding permissions
+     * @param removedPermissions List of removing permissions
+     * @throws APIManagerPublisherException If error occurred while updating the scope role mapping
+     */
+    void updateScopeRoleMapping(String roleName, String[] permissions, String[] removedPermissions) throws APIManagerPublisherException;
 
 }

components/apimgt-extensions/io.entgra.device.mgt.core.apimgt.webapp.publisher/src/main/java/io/entgra/device/mgt/core/apimgt/webapp/publisher/APIPublisherServiceImpl.java

@@ -626,7 +626,7 @@ public class APIPublisherServiceImpl implements APIPublisherService {
     }
 
     @Override
-    public void updateScopeRoleMapping(String roleName, String[] permissions) throws APIManagerPublisherException {
+    public void updateScopeRoleMapping(String roleName, String[] permissions, String[] removedPermissions) throws APIManagerPublisherException {
         APIApplicationServices apiApplicationServices = new APIApplicationServicesImpl();
         APIApplicationKey apiApplicationKey;
         AccessTokenInfo accessTokenInfo;
@@ -643,49 +643,14 @@ public class APIPublisherServiceImpl implements APIPublisherService {
         try {
             PublisherRESTAPIServices publisherRESTAPIServices = new PublisherRESTAPIServicesImpl();
             JSONObject scopeObject = publisherRESTAPIServices.getScopes(apiApplicationKey, accessTokenInfo);
-
             Map<String, String> permScopeMap = APIPublisherDataHolder.getInstance().getPermScopeMapping();
-            for (String permission : permissions) {
-                String scopeValue = permScopeMap.get(permission);
-                if (scopeValue == null) {
-                    String msg = "Found invalid permission: " + permission + ". Hence aborting the scope role " +
-                            "mapping process";
-                    log.error(msg);
-                    throw new APIManagerPublisherException(msg);
-                }
-
-                JSONArray scopeList = (JSONArray) scopeObject.get("list");
-                for (int i = 0; i < scopeList.length(); i++) {
-                    JSONObject scopeObj = scopeList.getJSONObject(i);
-                    if (scopeObj.getString("name").equals(scopeValue)) {
-                        Scope scope = new Scope();
-                        scope.setName(scopeObj.getString("name"));
-                        scope.setKey(scopeObj.getString("name"));
-                        scope.setDescription(scopeObj.getString("description"));
-                        scope.setId(scopeObj.getString("id"));
-
-                        // Including already existing roles
-                        JSONArray existingRolesArray = (JSONArray) scopeObj.get("bindings");
-                        List<String> existingRoleList = new ArrayList<String>();
-
-                        for (int j = 0; j < existingRolesArray.length(); j++) {
-                            existingRoleList.add((String) existingRolesArray.get(j));
-                        }
-                        if (!existingRoleList.contains(roleName)) {
-                            existingRoleList.add(roleName);
-                        }
-                        scope.setRoles(String.join(",", existingRoleList));
-
-                        if (publisherRESTAPIServices.isSharedScopeNameExists(apiApplicationKey, accessTokenInfo, scope.getKey())) {
-                            publisherRESTAPIServices.updateSharedScope(apiApplicationKey, accessTokenInfo, scope);
-                        } else {
-                            // todo: come to this level means, that scope is removed from API, but haven't removed from the scope-role-permission-mappings list
-                            log.warn(scope.getKey() + " not available as shared scope");
-                        }
-                        break;
-                    }
-                }
+            if (permissions.length != 0) {
+                updateScopes(roleName, publisherRESTAPIServices, apiApplicationKey, accessTokenInfo, scopeObject, permissions, permScopeMap, false);
             }
+            if (removedPermissions.length != 0) {
+                updateScopes(roleName, publisherRESTAPIServices, apiApplicationKey, accessTokenInfo, scopeObject, removedPermissions, permScopeMap, true);
+            }
+
             try {
                 updatePermissions(roleName, Arrays.asList(permissions));
             } catch (UserStoreException e) {
@@ -708,6 +673,75 @@ public class APIPublisherServiceImpl implements APIPublisherService {
         }
     }
 
+    /**
+     * Update Scopes
+     *
+     * @param roleName Role Name
+     * @param publisherRESTAPIServices {@link PublisherRESTAPIServices}
+     * @param apiApplicationKey {@link APIApplicationKey}
+     * @param accessTokenInfo {@link AccessTokenInfo}
+     * @param scopeObject scope object returning from APIM
+     * @param permissions List of permissions
+     * @param permScopeMap Permission Scope map
+     * @param removingPermissions if list of permissions has to be removed from the role send true, otherwise sends false.
+     * @throws APIManagerPublisherException If the method receives invalid permission to update.
+     */
+    private void updateScopes (String roleName, PublisherRESTAPIServices publisherRESTAPIServices,
+                      APIApplicationKey apiApplicationKey, AccessTokenInfo accessTokenInfo,
+                      JSONObject scopeObject, String[] permissions, Map<String, String> permScopeMap, boolean removingPermissions )
+            throws APIManagerPublisherException {
+        for (String permission : permissions) {
+            String scopeValue = permScopeMap.get(permission);
+            if (scopeValue == null) {
+                String msg = "Found invalid permission: " + permission + ". Hence aborting the scope role " +
+                        "mapping process";
+                log.error(msg);
+                throw new APIManagerPublisherException(msg);
+            }
+
+            JSONArray scopeList = (JSONArray) scopeObject.get("list");
+            for (int i = 0; i < scopeList.length(); i++) {
+                JSONObject scopeObj = scopeList.getJSONObject(i);
+                if (scopeObj.getString("name").equals(scopeValue)) {
+                    Scope scope = new Scope();
+                    scope.setName(scopeObj.getString("name"));
+                    scope.setKey(scopeObj.getString("name"));
+                    scope.setDescription(scopeObj.getString("description"));
+                    scope.setId(scopeObj.getString("id"));
+
+                    // Including already existing roles
+                    JSONArray existingRolesArray = (JSONArray) scopeObj.get("bindings");
+                    List<String> existingRoleList = new ArrayList<String>();
+
+                    for (int j = 0; j < existingRolesArray.length(); j++) {
+                        existingRoleList.add((String) existingRolesArray.get(j));
+                    }
+
+                    if (removingPermissions) {
+                        existingRoleList.remove(roleName);
+                    } else {
+                        if (!existingRoleList.contains(roleName)) {
+                            existingRoleList.add(roleName);
+                        }
+                    }
+                    scope.setRoles(String.join(",", existingRoleList));
+
+                    try {
+                        if (publisherRESTAPIServices.isSharedScopeNameExists(apiApplicationKey, accessTokenInfo, scope.getKey())) {
+                            publisherRESTAPIServices.updateSharedScope(apiApplicationKey, accessTokenInfo, scope);
+                        } else {
+                            // todo: come to this level means, that scope is removed from API, but haven't removed from the scope-role-permission-mappings list
+                            log.warn(scope.getKey() + " not available as shared scope");
+                        }
+                    } catch (APIServicesException | BadRequestException | UnexpectedResponseException  e) {
+                        log.error("Error occurred while updating role scope mapping via APIM REST endpoint.", e);
+                    }
+                    break;
+                }
+            }
+        }
+    }
+
     private void updatePermissions(String role, List<String> permissions) throws UserStoreException {
         AuthorizationManager authorizationManager = APIPublisherDataHolder.getInstance().getUserRealm()
                 .getAuthorizationManager();

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/beans/RoleInfo.java

@@ -33,6 +33,11 @@ public class RoleInfo {
     @ApiModelProperty(name = "permissions", value = "Lists out all the permissions associated with roles.",
             required = true, dataType = "List[java.lang.String]")
     private String[] permissions;
+
+    @ApiModelProperty(name = "removedPermissions", value = "Lists out all the permissions unassociated with roles.",
+            required = true, dataType = "List[java.lang.String]")
+    private String[] removedPermissions;
+
     @ApiModelProperty(name = "users", value = "The list of users assigned to the selected role.",
             required = true, dataType = "List[java.lang.String]")
     private String[] users;
@@ -76,4 +81,7 @@ public class RoleInfo {
         this.permissionList = permissionList;
     }
 
+    public String[] getRemovedPermissions() { return removedPermissions; }
+
+    public void setRemovedPermissions(String[] removedPermissions) { this.removedPermissions = removedPermissions; }
 }

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

@@ -279,6 +279,14 @@ public class RoleManagementServiceImpl implements RoleManagementService {
         }
     }
 
+    /**
+     * Retrieve filtered permissions by analyzing all the permission paths.
+     *
+     * @param rolePermissions All the permission paths
+     * @param permissionPaths Permission paths that needs to filter
+     * @param permissions List of filtered permissions
+     * @return {@link List<String>}
+     */
     private List<String> processAndFilterPermissions(UIPermissionNode[] rolePermissions, List<String> permissionPaths, List<String> permissions) {
 
         for (UIPermissionNode rolePermission : rolePermissions) {
@@ -299,6 +307,15 @@ public class RoleManagementServiceImpl implements RoleManagementService {
         return permissions;
     }
 
+    /**
+     * Getting platform permissions
+     *
+     * @param roleName Role Name
+     * @param userRealm {@link UserRealm}
+     * @param permissions list of permissions
+     * @return {@link List<String>}
+     * @throws UserAdminException if error occurred when getting {@link UIPermissionNode}
+     */
     private String[] getPlatformUIPermissions(String roleName, UserRealm userRealm, String[] permissions)
             throws UserAdminException {
         UIPermissionNode uiPermissionNode = getUIPermissionNode(roleName, userRealm);
@@ -403,8 +420,8 @@ public class RoleManagementServiceImpl implements RoleManagementService {
             try {
                 if (roleInfo.getPermissions() != null && roleInfo.getPermissions().length > 0) {
                     String[] roleName = roleInfo.getRoleName().split("/");
-                    addPermissions(roleName[roleName.length - 1], roleInfo.getPermissions(),
-                            DeviceMgtAPIUtils.getUserRealm());
+                    roleInfo.setRemovedPermissions(new String[0]);
+                    updatePermissions(roleName[roleName.length - 1], roleInfo, DeviceMgtAPIUtils.getUserRealm());
                 }
             } catch (UserStoreException e) {
                 String msg = "Error occurred while loading the user store.";
@@ -546,7 +563,7 @@ public class RoleManagementServiceImpl implements RoleManagementService {
 
             if (roleInfo.getPermissions() != null) {
                 String[] roleDetails = roleName.split("/");
-                addPermissions(roleDetails[roleDetails.length - 1], roleInfo.getPermissions(), userRealm);
+                updatePermissions(roleDetails[roleDetails.length - 1], roleInfo, userRealm);
             }
             //TODO: Need to send the updated role information in the entity back to the client
             return Response.status(Response.Status.OK).entity("Role '" + roleInfo.getRoleName() + "' has " +
@@ -697,7 +714,14 @@ public class RoleManagementServiceImpl implements RoleManagementService {
         return rolePermissions;
     }
 
-    private void addPermissions(String roleName, String[] permissions, UserRealm userRealm) {
+    /**
+     * Update the role's permissions. This will function in the fire and forget pattern and run on a new thread.
+     *
+     * @param roleName Role Name
+     * @param roleInfo {@link RoleInfo}
+     * @param userRealm {@link UserRealm}
+     */
+    private void updatePermissions(String roleName, RoleInfo roleInfo, UserRealm userRealm) {
         String tenantDomain = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantDomain(true);
         Thread thread = new Thread(new Runnable() {
             @Override
@@ -707,7 +731,8 @@ public class RoleManagementServiceImpl implements RoleManagementService {
                     PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantDomain(tenantDomain, true);
                     DeviceMgtAPIUtils.getApiPublisher().updateScopeRoleMapping(roleName,
                             RoleManagementServiceImpl.this.getPlatformUIPermissions(roleName, userRealm,
-                                    permissions));
+                                    roleInfo.getPermissions()), RoleManagementServiceImpl.this.getPlatformUIPermissions(roleName, userRealm,
+                                    roleInfo.getRemovedPermissions()));
                 } catch (APIManagerPublisherException | UserAdminException e) {
                     log.error("Error Occurred while updating role scope mapping. ", e);
                 } finally {