remove span kind from inferred proxy spans (#5265)

remove some unnecessary span information

---------

Co-authored-by: Zarir Hamza <[email protected]>

Author: wconti27

packages/dd-trace/src/plugins/util/inferred_proxy.js

@@ -2,7 +2,6 @@ const log = require('../../log')
 const tags = require('../../../../../ext/tags')
 
 const RESOURCE_NAME = tags.RESOURCE_NAME
-const SPAN_KIND = tags.SPAN_KIND
 const SPAN_TYPE = tags.SPAN_TYPE
 const HTTP_URL = tags.HTTP_URL
 const HTTP_METHOD = tags.HTTP_METHOD
@@ -49,7 +48,6 @@ function createInferredProxySpan (headers, childOf, tracer, context) {
       tags: {
         service: proxyContext.domainName || tracer._config.service,
         component: proxySpanInfo.component,
-        [SPAN_KIND]: 'internal',
         [SPAN_TYPE]: 'web',
         [HTTP_METHOD]: proxyContext.method,
         [HTTP_URL]: proxyContext.domainName + proxyContext.path,
@@ -71,7 +69,7 @@ function createInferredProxySpan (headers, childOf, tracer, context) {
 
 function setInferredProxySpanTags (span, proxyContext) {
   span.setTag(RESOURCE_NAME, `${proxyContext.method} ${proxyContext.path}`)
-  span.setTag('_dd.inferred_span', '1')
+  span.setTag('_dd.inferred_span', 1)
   return span
 }
 

packages/dd-trace/test/plugins/util/inferred_proxy.spec.js

@@ -81,9 +81,8 @@ describe('Inferred Proxy Spans', function () {
             expect(spans[0].meta).to.have.property('http.url', 'example.com/test')
             expect(spans[0].meta).to.have.property('http.method', 'GET')
             expect(spans[0].meta).to.have.property('http.status_code', '200')
-            expect(spans[0].meta).to.have.property('span.kind', 'internal')
             expect(spans[0].meta).to.have.property('component', 'aws-apigateway')
-            expect(spans[0].meta).to.have.property('_dd.inferred_span', '1')
+            expect(spans[0].metrics).to.have.property('_dd.inferred_span', 1)
             expect(spans[0].start.toString()).to.be.equal('1729780025472999936')
 
             expect(spans[0].span_id.toString()).to.be.equal(spans[1].parent_id.toString())
@@ -129,7 +128,6 @@ describe('Inferred Proxy Spans', function () {
             expect(spans[0].meta).to.have.property('http.url', 'example.com/test')
             expect(spans[0].meta).to.have.property('http.method', 'GET')
             expect(spans[0].meta).to.have.property('http.status_code', '500')
-            expect(spans[0].meta).to.have.property('span.kind', 'internal')
             expect(spans[0].meta).to.have.property('component', 'aws-apigateway')
             expect(spans[0].error).to.be.equal(1)
             expect(spans[0].start.toString()).to.be.equal('1729780025472999936')