Fix error details not being logged in the tracing's span event

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Error tracing spans not logging the details.
+
 ## [6.45.21] - 2023-09-19
 ### Changed
 - Fix tracingMiddleware shouldTrace decision

src/HttpClient/middlewares/request/setupAxios/__tests__/axiosTracingTestSuite.ts

@@ -167,7 +167,7 @@ export const registerSharedTestSuite = (testSuiteConfig: TestSuiteConfig) => {
           expect((requestSpan as any)._logs[len - 1].fields[ErrorReportLogFields.ERROR_ID]).toBeDefined()
           expect((requestSpan as any)._logs[len - 1].fields[ErrorReportLogFields.ERROR_KIND]).toBeDefined()
           expect(
-            ((requestSpan as any)._logs[len - 1].fields.error.message as string).startsWith(
+            ((requestSpan as any)._logs[len - 1].fields[ErrorReportLogFields.ERROR_MESSAGE] as string).startsWith(
               testSuiteConfig.expects.error!.errorMessagePrefix
             )
           ).toBeTruthy()

src/tracing/LogFields.ts

@@ -15,6 +15,11 @@ export const enum ErrorReportLogFields {
    */
   ERROR_KIND = 'error.kind',
   ERROR_ID = 'error.id',
+  ERROR_MESSAGE = 'error.message',
+  ERROR_CODE = 'error.code',
+  ERROR_STACK = 'error.stack',
+  ERROR_METADATA_REPORT_COUNT = 'error.metadata.reportCount',
+  ERROR_METADATA_METRICS_INSTANTIATION_TIME = 'error.metadata.metrics.InstantiationTime',
 
   /**
    * VTEX's Infra errors adds error details to the response

src/tracing/errorReporting/ErrorReport.ts

@@ -61,7 +61,15 @@ export class ErrorReport extends ErrorReportBase {
     }
 
     const serializableError = this.toObject()
-    span?.log({ event: 'error', ...indexedLogs, error: serializableError })
+    span?.log({
+      event: 'error',
+      ...indexedLogs,
+      [ErrorReportLogFields.ERROR_MESSAGE]: serializableError.message,
+      [ErrorReportLogFields.ERROR_METADATA_METRICS_INSTANTIATION_TIME]: serializableError.metadata?.reportCount,
+      [ErrorReportLogFields.ERROR_METADATA_REPORT_COUNT]: serializableError.metadata?.metrics?.instantiationTime,
+      [ErrorReportLogFields.ERROR_STACK]: serializableError.stack,
+      [ErrorReportLogFields.ERROR_CODE]: serializableError.code,
+    })
 
     if (logger && this.shouldLogToSplunk(span)) {
       logger.error(serializableError)