From daae78370ad37e9a7b7b41a253611c869808b903 Mon Sep 17 00:00:00 2001
From: Martin Sonnberger <martin.sonnberger@sentry.io>
Date: Thu, 6 Aug 2026 14:30:16 +0200
Subject: [PATCH] feat(opentelemetry)!: Drop `.prefetch` suffix from inferred
 HTTP span ops
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Row 3 of JS-3105: OTel inference fabricated the unregistered
`http.client.prefetch` / `http.server.prefetch` ops. Prefetch is request
data, not an operation category, and is already recorded on the span as
`sentry.http.prefetch` — so the op now only encodes the request direction
(`http.client` / `http.server`, or `http` when the kind is unknown), using
the registered `@sentry/conventions` op constants.

part of #22446

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 .../src/utils/parseSpanDescription.ts         | 26 +++++++------------
 .../test/utils/parseSpanDescription.test.ts   |  2 +-
 2 files changed, 11 insertions(+), 17 deletions(-)

diff --git a/packages/opentelemetry/src/utils/parseSpanDescription.ts b/packages/opentelemetry/src/utils/parseSpanDescription.ts
index 9cc6c64385f1..b6edf9244ddd 100644
--- a/packages/opentelemetry/src/utils/parseSpanDescription.ts
+++ b/packages/opentelemetry/src/utils/parseSpanDescription.ts
@@ -21,7 +21,9 @@ import {
   MESSAGING_QUEUE_PUBLISH_SPAN_OP,
   MESSAGING_QUEUE_RECEIVE_SPAN_OP,
   MESSAGING_QUEUE_SPAN_OP,
+  WEB_SERVER_HTTP_CLIENT_SPAN_OP,
   WEB_SERVER_HTTP_SERVER_SPAN_OP,
+  WEB_SERVER_HTTP_SPAN_OP,
 } from '@sentry/conventions/op';
 import type { Span, SpanAttributes } from '@sentry/core';
 import {
@@ -163,27 +165,19 @@ function descriptionForDbSystem(attributes: Attributes): SpanDescription {
 
 /** Only exported for tests. */
 export function descriptionForHttpMethod(attributes: Attributes): SpanDescription {
-  const opParts = ['http'];
   const kind = attributes[SENTRY_KIND];
 
-  switch (kind) {
-    case 'client':
-      opParts.push('client');
-      break;
-    case 'server':
-      opParts.push('server');
-      break;
-  }
-
-  // Spans for HTTP requests we have determined to be prefetch requests will have a `.prefetch` postfix in the op
-  if (attributes['sentry.http.prefetch']) {
-    opParts.push('prefetch');
-  }
+  const op =
+    kind === 'client'
+      ? WEB_SERVER_HTTP_CLIENT_SPAN_OP
+      : kind === 'server'
+        ? WEB_SERVER_HTTP_SERVER_SPAN_OP
+        : WEB_SERVER_HTTP_SPAN_OP;
 
   const { urlPath, url, query, fragment } = getSanitizedUrl(attributes);
 
   if (!urlPath) {
-    return { op: opParts.join('.') };
+    return { op };
   }
 
   const data: Record<string, string> = {};
@@ -201,7 +195,7 @@ export function descriptionForHttpMethod(attributes: Attributes): SpanDescriptio
   }
 
   return {
-    op: opParts.join('.'),
+    op,
     data,
   };
 }
diff --git a/packages/opentelemetry/test/utils/parseSpanDescription.test.ts b/packages/opentelemetry/test/utils/parseSpanDescription.test.ts
index 09c6f0cccfb6..935c01795726 100644
--- a/packages/opentelemetry/test/utils/parseSpanDescription.test.ts
+++ b/packages/opentelemetry/test/utils/parseSpanDescription.test.ts
@@ -327,7 +327,7 @@ describe('descriptionForHttpMethod', () => {
         [SENTRY_KIND]: 'client' as const,
       },
       {
-        op: 'http.client.prefetch',
+        op: 'http.client',
         data: {
           'url.full': 'https://www.example.com/my-path',
         },