Log the error details when initialization failed (#3472)

Author: testforstephen

src/extension.ts

@@ -29,7 +29,7 @@ import { snippetCompletionProvider } from './snippetCompletionProvider';
 import { JavaClassEditorProvider } from './javaClassEditor';
 import { StandardLanguageClient } from './standardLanguageClient';
 import { SyntaxLanguageClient } from './syntaxLanguageClient';
-import { convertToGlob, deleteClientLog, deleteDirectory, ensureExists, getBuildFilePatterns, getExclusionGlob, getInclusionPatternsFromNegatedExclusion, getJavaConfig, getJavaConfiguration, hasBuildToolConflicts } from './utils';
+import { convertToGlob, deleteClientLog, deleteDirectory, ensureExists, getBuildFilePatterns, getExclusionGlob, getInclusionPatternsFromNegatedExclusion, getJavaConfig, getJavaConfiguration, hasBuildToolConflicts, resolveActualCause } from './utils';
 import glob = require('glob');
 import { Telemetry } from './telemetry';
 import { getMessage } from './errorUtils';
@@ -272,6 +272,7 @@ export async function activate(context: ExtensionContext): Promise<ExtensionAPI>
 								name: "java.client.error.initialization",
 								properties: {
 									message: error && error.toString(),
+									data: resolveActualCause(error?.data),
 								},
 							});
 						}

src/utils.ts

@@ -299,3 +299,20 @@ async function addAutoDetectedJdks(configuredJREs: any[]): Promise<any[]> {
 
 	return configuredJREs;
 }
+
+export function resolveActualCause(callstack: any): any {
+	if (!callstack) {
+		return;
+	}
+
+	const callstacks = callstack.split(/\r?\n/);
+	if (callstacks?.length) {
+		for (let i = callstacks.length - 1; i >= 0; i--) {
+			if (callstacks[i]?.startsWith("Caused by:")) {
+				return callstacks.slice(i).join("\n");
+			}
+		}
+	}
+
+	return callstack;
+}