Fix error handling in hover and codelens

src/languageservice/parser/recursivelyBuildAst.ts

@@ -13,6 +13,10 @@ import { parseYamlBoolean } from './scalar-type';
 
 const maxRefCount = 1000;
 let refDepth = 0;
+
+//This is a patch for redirecting values with these strings to be boolean nodes because its not supported in the parser.
+const possibleBooleanValues = ['y', 'Y', 'yes', 'Yes', 'YES', 'n', 'N', 'no', 'No', 'NO', 'on', 'On', 'ON', 'off', 'Off', 'OFF'];
+
 export default function recursivelyBuildAst(parent: ASTNode, node: Yaml.YAMLNode): ASTNode {
   if (!node) {
     return;
@@ -55,7 +59,7 @@ export default function recursivelyBuildAst(parent: ASTNode, node: Yaml.YAMLNode
       keyNode.value = key.value;
 
       const valueNode = instance.value
-        ? recursivelyBuildAst(result, instance.value)
+        ? recursivelyBuildAst(result, instance.value) ?? new NullASTNodeImpl(parent, instance.endPosition, 0)
         : new NullASTNodeImpl(parent, instance.endPosition, 0);
       valueNode.location = key.value;
 
@@ -90,26 +94,6 @@ export default function recursivelyBuildAst(parent: ASTNode, node: Yaml.YAMLNode
       const type = Yaml.determineScalarType(instance);
 
       const value = instance.value;
-
-      //This is a patch for redirecting values with these strings to be boolean nodes because its not supported in the parser.
-      const possibleBooleanValues = [
-        'y',
-        'Y',
-        'yes',
-        'Yes',
-        'YES',
-        'n',
-        'N',
-        'no',
-        'No',
-        'NO',
-        'on',
-        'On',
-        'ON',
-        'off',
-        'Off',
-        'OFF',
-      ];
       if (instance.plainScalar && possibleBooleanValues.indexOf(value.toString()) !== -1) {
         return new BooleanASTNodeImpl(parent, parseYamlBoolean(value), node.startPosition, node.endPosition - node.startPosition);
       }
@@ -144,7 +128,6 @@ export default function recursivelyBuildAst(parent: ASTNode, node: Yaml.YAMLNode
           return result;
         }
       }
-
       break;
     }
     case Yaml.Kind.ANCHOR_REF: {

src/languageservice/services/yamlCodeLens.ts

@@ -20,9 +20,9 @@ export class YamlCodeLens {
 
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
   async getCodeLens(document: TextDocument, params: CodeLensParams): Promise<CodeLens[]> {
-    const yamlDocument = yamlDocumentsCache.getYamlDocument(document);
     const result = [];
     try {
+      const yamlDocument = yamlDocumentsCache.getYamlDocument(document);
       for (const currentYAMLDoc of yamlDocument.documents) {
         const schema = await this.schemaService.getSchemaForResource(document.uri, currentYAMLDoc);
         if (schema?.schema) {

src/languageservice/services/yamlHover.ts

@@ -17,12 +17,13 @@ import { getNodeValue } from '../parser/jsonParser07';
 import { JSONSchema } from '../jsonSchema';
 import { URI } from 'vscode-uri';
 import * as path from 'path';
+import { Telemetry } from '../../languageserver/telemetry';
 
 export class YAMLHover {
   private shouldHover: boolean;
   private schemaService: YAMLSchemaService;
 
-  constructor(schemaService: YAMLSchemaService) {
+  constructor(schemaService: YAMLSchemaService, private readonly telemetry: Telemetry) {
     this.shouldHover = true;
     this.schemaService = schemaService;
   }
@@ -34,20 +35,24 @@ export class YAMLHover {
   }
 
   doHover(document: TextDocument, position: Position, isKubernetes = false): Promise<Hover | null> {
-    if (!this.shouldHover || !document) {
-      return Promise.resolve(undefined);
-    }
-    const doc = yamlDocumentsCache.getYamlDocument(document);
-    const offset = document.offsetAt(position);
-    const currentDoc = matchOffsetToDocument(offset, doc);
-    if (currentDoc === null) {
-      return Promise.resolve(undefined);
-    }
+    try {
+      if (!this.shouldHover || !document) {
+        return Promise.resolve(undefined);
+      }
+      const doc = yamlDocumentsCache.getYamlDocument(document);
+      const offset = document.offsetAt(position);
+      const currentDoc = matchOffsetToDocument(offset, doc);
+      if (currentDoc === null) {
+        return Promise.resolve(undefined);
+      }
 
-    setKubernetesParserOption(doc.documents, isKubernetes);
-    const currentDocIndex = doc.documents.indexOf(currentDoc);
-    currentDoc.currentDocIndex = currentDocIndex;
-    return this.getHover(document, position, currentDoc);
+      setKubernetesParserOption(doc.documents, isKubernetes);
+      const currentDocIndex = doc.documents.indexOf(currentDoc);
+      currentDoc.currentDocIndex = currentDocIndex;
+      return this.getHover(document, position, currentDoc);
+    } catch (error) {
+      this.telemetry.sendError('yaml.hover.error', { error, documentUri: document.uri });
+    }
   }
 
   // method copied from https://github.com/microsoft/vscode-json-languageservice/blob/2ea5ad3d2ffbbe40dea11cfe764a502becf113ce/src/services/jsonHover.ts#L23

src/languageservice/yamlLanguageService.ts

@@ -151,7 +151,7 @@ export function getLanguageService(
 ): LanguageService {
   const schemaService = new YAMLSchemaService(schemaRequestService, workspaceContext);
   const completer = new YAMLCompletion(schemaService, clientCapabilities, telemetry);
-  const hover = new YAMLHover(schemaService);
+  const hover = new YAMLHover(schemaService, telemetry);
   const yamlDocumentSymbols = new YAMLDocumentSymbols(schemaService, telemetry);
   const yamlValidation = new YAMLValidation(schemaService);
   const formatter = new YAMLFormatter();