refactor: unify plugin conflict errors

Closes #58

src/core/protocol/errors/ErrorResponse.ts

@@ -13,6 +13,7 @@
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
 import {ValidationError} from 'jsonschema';
+import {SCPluginMetaData} from '../routes/plugin/PluginRegisterRequest';
 
 /**
  * A generic error that can be returned by the backend if somethings fails during the processing of a request
@@ -169,13 +170,23 @@ export class SCParametersNotAcceptable extends SCError {
  */
 export class SCPluginAlreadyRegisteredErrorResponse extends SCError {
   /**
-   * Create a PluginAlreadyRegisteredError
+   * Meta data of a registered plugin, which is in a conflict with the plugin we want to register.
+   * If the stack is disabled this is not set for security reasons
+   */
+  additionalData?: SCPluginMetaData;
+
+  /**
+   * Create a SCPluginAlreadyRegisteredError
    *
-   * @param message contains potential differences in other parameters outside of the name
+   * @param message Provide further information why an already registered plugin matches the one we want to register
+   * @param plugin Provides meta data of a registered plugin, which is in a conflict with the plugin we want to register
    * @param stack Set to true if a stack trace should be created
    */
-  constructor(message: string, stack?: boolean) {
-    super('PluginRegisteringFailedError', message, 409, stack);
+  constructor(message: string, plugin: SCPluginMetaData, stack?: boolean) {
+    super('SCPluginAlreadyRegisteredError', message, 409, stack);
+    if (stack) {
+      this.additionalData = plugin;
+    }
   }
 }
 
@@ -194,25 +205,6 @@ export class SCPluginRegisteringFailedErrorResponse extends SCError {
   }
 }
 
-/**
- * An error that is returned whenever there is a plugin request that is supposed to register a route, that is already
- * registered
- * This usually indicates that two **different** plugins use the same route.
- */
-export class SCPluginRouteAlreadyRegisteredErrorResponse extends SCError {
-  /**
-   * Create a PluginRouteAlreadyRegisteredError
-   *
-   * @param registeredName The name by the plugin that has already registered the route previously
-   * @param registeredUrl  The URL by the plugin that has already registered the route previously
-   * @param stack Set to true if a stack trace should be created
-   */
-  constructor(registeredName: string, registeredUrl: string, stack?: boolean) {
-    super('PluginRouteAlreadyRegisteredError',
-      `Already registered by "${registeredName}" under URL "${registeredUrl}".`, 409, stack);
-  }
-}
-
 /**
  * An error that is returned whenever there is a syntax error
  */
@@ -241,7 +233,7 @@ export class SCInternalServerErrorResponse extends SCError {
    * Create a SCInternalServerErrorResponse
    *
    * @param err Internal server error
-   * @param stack Set to true if a stack trace should be created 
+   * @param stack Set to true if a stack trace should be created
    * and the internal server error should be displayed to the client
    */
   constructor(err?: Error, stack?: boolean) {

src/core/protocol/routes/plugin/PluginRegisterRequest.ts

@@ -19,7 +19,6 @@ import {
   SCMethodNotAllowedErrorResponse, SCParametersNotAcceptable,
   SCPluginAlreadyRegisteredErrorResponse,
   SCPluginRegisteringFailedErrorResponse,
-  SCPluginRouteAlreadyRegisteredErrorResponse,
   SCRequestBodyTooLargeErrorResponse,
   SCSyntaxErrorResponse,
 } from '../../errors/ErrorResponse';
@@ -103,7 +102,6 @@ export class SCPluginRegisterRoute extends SCAbstractRoute {
       SCParametersNotAcceptable,
       SCPluginAlreadyRegisteredErrorResponse,
       SCPluginRegisteringFailedErrorResponse,
-      SCPluginRouteAlreadyRegisteredErrorResponse,
       SCRequestBodyTooLargeErrorResponse,
       SCSyntaxErrorResponse,
     ];