pull sampling data for envelope headers from debug_meta rather than tags

Author: lobsterkatie

packages/core/src/request.ts

@@ -51,14 +51,18 @@ export function sessionToSentryRequest(session: Session, api: API): SentryReques
 
 /** Creates a SentryRequest from an event. */
 export function eventToSentryRequest(event: Event, api: API): SentryRequest {
-  // since JS has no Object.prototype.pop()
-  const { __sentry_samplingMethod: samplingMethod, __sentry_sampleRate: sampleRate, ...otherTags } = event.tags || {};
-  event.tags = otherTags;
-
   const sdkInfo = getSdkMetadataForEnvelopeHeader(api);
   const eventType = event.type || 'event';
   const useEnvelope = eventType === 'transaction';
 
+  const { transactionSampling, ...metadata } = event.debug_meta || {};
+  const { method: samplingMethod, rate: sampleRate } = transactionSampling || {};
+  if (Object.keys(metadata).length === 0) {
+    delete event.debug_meta;
+  } else {
+    event.debug_meta = metadata;
+  }
+
   const req: SentryRequest = {
     body: JSON.stringify(sdkInfo ? enhanceEventWithSdkInfo(event, api.metadata.sdk) : event),
     type: eventType,