ISPN-13218 improve error message

src/__tests__/services/cacheConfigUtils.test.ts

@@ -119,4 +119,12 @@ describe('Cache Config Utils tests', () => {
     ]);
   });
 
+  test('minim validation of the configuration json or xml', () => {
+    expect(CacheConfigUtils.validateConfig('').isLeft()).toBeTruthy();
+    expect(CacheConfigUtils.validateConfig('    ').isLeft()).toBeTruthy();
+    expect(CacheConfigUtils.validateConfig('xml').isLeft()).toBeTruthy();
+    expect(CacheConfigUtils.validateConfig('json').isLeft()).toBeTruthy();
+    expect(CacheConfigUtils.validateConfig('{}').isRight()).toBeTruthy();
+    expect(CacheConfigUtils.validateConfig('<xml>foo</xml>').isRight()).toBeTruthy();
+  });
 });

src/app/Caches/CreateCache.tsx

@@ -29,6 +29,7 @@ import {useHistory} from 'react-router';
 import {useApiAlert} from '@app/utils/useApiAlert';
 import {DataContainerBreadcrumb} from '@app/Common/DataContainerBreadcrumb';
 import {ConsoleServices} from "@services/ConsoleServices";
+import {CacheConfigUtils} from "@services/cacheConfigUtils";
 
 const CreateCache: React.FunctionComponent<any> = (props) => {
   const { addAlert } = useApiAlert();
@@ -47,6 +48,7 @@ const CreateCache: React.FunctionComponent<any> = (props) => {
   const [validConfig, setValidConfig] = useState<
     'success' | 'error' | 'default'
   >('default');
+  const [errorConfig, setErrorConfig] = useState('');
 
   interface OptionSelect {
     value: string;
@@ -103,39 +105,31 @@ const CreateCache: React.FunctionComponent<any> = (props) => {
     }
   };
 
-  const validateConfig = (): boolean => {
-    const trimmedConf = config.trim();
-    if (trimmedConf.length == 0) {
-      return false;
-    }
-    let isJson = false;
-    let isXML = false;
-    try {
-      JSON.parse(trimmedConf);
-      isJson = true;
-    } catch (ex) {}
-
-    try {
-      let oDOM = new DOMParser().parseFromString(trimmedConf, 'text/xml');
-      if (oDOM.getElementsByTagName('parsererror').length == 0) {
-        isXML = true;
-      }
-    } catch (ex) {}
-    return isJson || isXML;
-  };
-
   const createCache = () => {
+    setErrorConfig('');
     const name = cacheName.trim();
+    // Validate Name
     let isValidName: 'success' | 'error' =
       name.length > 0 ? 'success' : 'error';
-    let isValidConfig: 'success' | 'error' =
-      selectedConfig != '' || validateConfig() ? 'success' : 'error';
     setValidName(isValidName);
+
+    // Validate the config
+    let isValidConfig: 'success' | 'error' = 'error';
+    if (selectedConfig != '') {
+      isValidConfig = 'success';
+    } else {
+      let configValidation = CacheConfigUtils.validateConfig(config);
+      isValidConfig = configValidation.isRight() ? 'success' : 'error';
+      if (configValidation.isLeft()) {
+        setErrorConfig(configValidation.value);
+      }
+    }
     setValidConfig(isValidConfig);
 
     if (isValidName == 'error' || isValidConfig == 'error') {
       return;
     }
+
     let createCacheCall: Promise<ActionResponse>;
     if (selectedConfig != '') {
       createCacheCall = ConsoleServices.caches().createCacheByConfigName(
@@ -202,9 +196,9 @@ const CreateCache: React.FunctionComponent<any> = (props) => {
               <FormGroup
                 fieldId="cache-config-name"
                 label="Cache templates"
-                helperText="Select a cache template or provide a cache configuration."
+                helperText="Select a cache template or provide a valid cache configuration."
                 validated={validConfig}
-                helperTextInvalid="Your cache must have a configuration."
+                helperTextInvalid={errorConfig}
               >
                 <Select
                   toggleIcon={<CubeIcon />}
@@ -238,6 +232,7 @@ const CreateCache: React.FunctionComponent<any> = (props) => {
                 <FormGroup
                   label="Cache configuration"
                   fieldId="cache-config"
+                  validated={validConfig}
                   helperText="Enter a cache configuration in XML or JSON format."
                   helperTextInvalid="Provide a valid cache configuration in XML or JSON format."
                 >

src/services/cacheConfigUtils.ts

@@ -1,4 +1,5 @@
 import { ContentType, EncodingType } from '@services/infinispanRefData';
+import {Either, left, right} from "@services/either";
 
 export const Distributed = 'distributed-cache';
 export const Replicated = 'replicated-cache';
@@ -10,6 +11,33 @@ export const Scattered = 'scattered-cache';
  * Utility class to map cache configuration
  */
 export class CacheConfigUtils {
+
+  /**
+   * Validates a configuration of cache may have a correct format and detects if it's
+   * a valid formatted json or a xml.
+   *
+   * @param config
+   */
+  public static validateConfig (config: string): Either<string, 'xml' | 'json'> {
+    const trimmedConf = config.trim();
+
+    if (trimmedConf.length == 0) {
+      return left('Configuration can\'t be empty');
+    }
+    try {
+      JSON.parse(trimmedConf);
+      return right('json');
+    } catch (ex) {}
+
+    try {
+      let oDOM = new DOMParser().parseFromString(trimmedConf, 'text/xml');
+      if (oDOM.getElementsByTagName('parsererror').length == 0) {
+        return right('xml');
+      }
+    } catch (ex) {}
+    return left('The provided configuration is not a valid XML or JSON.');
+  };
+
   /**
    * Map the encoding type of the cache
    * @param config, config of the cache