feat(otel): Updates to otel span processor (#6113)

* feat(otel): Improve otel span description extraction

* fix(otel): ensure otel timestamps are correctly converted

* feat(otel): Also parse otel span descriptions for Sentry transactions

Author: mydea

packages/opentelemetry-node/src/spanprocessor.ts

@@ -45,7 +45,7 @@ export class SentrySpanProcessor implements OtelSpanProcessor {
       const sentryChildSpan = sentryParentSpan.startChild({
         description: otelSpan.name,
         // instrumentor: 'otel',
-        startTimestamp: otelSpan.startTime[0],
+        startTimestamp: convertOtelTimeToSeconds(otelSpan.startTime),
         spanId: otelSpanId,
       });
 
@@ -56,7 +56,7 @@ export class SentrySpanProcessor implements OtelSpanProcessor {
         name: otelSpan.name,
         ...traceCtx,
         // instrumentor: 'otel',
-        startTimestamp: otelSpan.startTime[0],
+        startTimestamp: convertOtelTimeToSeconds(otelSpan.startTime),
         spanId: otelSpanId,
       });
 
@@ -82,7 +82,7 @@ export class SentrySpanProcessor implements OtelSpanProcessor {
       finishTransactionWithContextFromOtelData(sentrySpan, otelSpan);
     } else {
       updateSpanWithOtelData(sentrySpan, otelSpan);
-      sentrySpan.finish(otelSpan.endTime[0]);
+      sentrySpan.finish(convertOtelTimeToSeconds(otelSpan.endTime));
     }
 
     this._map.delete(otelSpanId);
@@ -123,7 +123,7 @@ function finishTransactionWithContextFromOtelData(transaction: Transaction, otel
       resource: otelSpan.resource.attributes,
     });
 
-    transaction.finish(otelSpan.endTime[0]);
+    transaction.finish(convertOtelTimeToSeconds(otelSpan.endTime));
   });
 }
 
@@ -145,4 +145,12 @@ function updateSpanWithOtelData(sentrySpan: SentrySpan, otelSpan: OtelSpan): voi
 
 function updateTransactionWithOtelData(transaction: Transaction, otelSpan: OtelSpan): void {
   transaction.setStatus(mapOtelStatus(otelSpan));
+
+  const { op, description } = parseSpanDescription(otelSpan);
+  transaction.op = op;
+  transaction.name = description;
+}
+
+function convertOtelTimeToSeconds([seconds, nano]: [number, number]): number {
+  return seconds + nano / 1_000_000_000;
 }

packages/opentelemetry-node/src/utils/parse-otel-span-description.ts

@@ -69,7 +69,7 @@ function descriptionForDbSystem(otelSpan: OtelSpan, _dbSystem: AttributeValue):
 }
 
 function descriptionForHttpMethod(otelSpan: OtelSpan, httpMethod: AttributeValue): SpanDescription {
-  const { name, kind } = otelSpan;
+  const { name, kind, attributes } = otelSpan;
 
   const opParts = ['http'];
 
@@ -82,8 +82,15 @@ function descriptionForHttpMethod(otelSpan: OtelSpan, httpMethod: AttributeValue
       break;
   }
 
-  // Ex. description="GET /api/users/{user_id}".
-  const description = `${httpMethod} ${name}`;
+  // Ex. /api/users
+  const httpPath = attributes[SemanticAttributes.HTTP_ROUTE] || attributes[SemanticAttributes.HTTP_TARGET];
+
+  if (!httpPath) {
+    return { op: opParts.join('.'), description: name };
+  }
+
+  // Ex. description="GET /api/users".
+  const description = `${httpMethod} ${httpPath}`;
 
   return { op: opParts.join('.'), description };
 }