Add support for persisted GraphQL Queries

Author: ithinkdancan

packages/rum-core/src/domain/resource/graphql.spec.ts

@@ -142,6 +142,25 @@ describe('GraphQL detection and metadata extraction', () => {
       const result = extractGraphQlRequestMetadata(requestBody, true)
       expect(result).toBeUndefined()
     })
+
+    it('should extract query operation name and variables for persisted queries', () => {
+      const requestBody = JSON.stringify({
+        extensions: {
+          persistedQuery: {
+            sha256Hash: 'somehashvalue',
+          },
+        },
+        operationName: 'GetUser',
+        variables: { id: '123' },
+      })
+
+      const result = extractGraphQlRequestMetadata(requestBody, true)
+
+      expect(result).toEqual({
+        operationName: 'GetUser',
+        variables: '{"id":"123"}',
+      })
+    })
   })
 
   describe('request payload truncation', () => {

packages/rum-core/src/domain/resource/graphql.ts

@@ -15,7 +15,7 @@ export interface GraphQlError {
 }
 
 export interface GraphQlMetadata {
-  operationType: 'query' | 'mutation' | 'subscription'
+  operationType?: 'query' | 'mutation' | 'subscription'
   operationName?: string
   variables?: string
   payload?: string
@@ -88,7 +88,12 @@ export function extractGraphQlRequestMetadata(
     return
   }
 
-  let graphqlBody: { query?: string; operationName?: string; variables?: unknown }
+  let graphqlBody: {
+    query?: string
+    operationName?: string
+    variables?: unknown
+    extensions?: { persistedQuery?: unknown }
+  }
 
   try {
     graphqlBody = JSON.parse(requestBody)
@@ -97,6 +102,13 @@ export function extractGraphQlRequestMetadata(
     return
   }
 
+  if (graphqlBody && graphqlBody.extensions?.persistedQuery) {
+    return {
+      operationName: graphqlBody.operationName,
+      variables: graphqlBody.variables ? JSON.stringify(graphqlBody.variables) : undefined,
+    }
+  }
+
   if (!graphqlBody || !graphqlBody.query) {
     return
   }