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opentelemetry.test.ts
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import { nextTestSetup } from 'e2e-utils'
import { check } from 'next-test-utils'
import { SavedSpan } from './constants'
import { type Collector, connectCollector } from './collector'
const EXTERNAL = {
traceId: 'ee75cd9e534ff5e9ed78b4a0c706f0f2',
spanId: '0f6a325411bdc432',
} as const
const COLLECTOR_PORT = 9001
describe('opentelemetry', () => {
const { next, skipped, isNextDev } = nextTestSetup({
files: __dirname,
skipDeployment: true,
dependencies: require('./package.json').dependencies,
env: {
TEST_OTEL_COLLECTOR_PORT: String(COLLECTOR_PORT),
NEXT_TELEMETRY_DISABLED: '1',
},
})
if (skipped) {
return
}
let collector: Collector
function getCollector(): Collector {
return collector
}
beforeEach(async () => {
collector = await connectCollector({ port: COLLECTOR_PORT })
})
afterEach(async () => {
await collector.shutdown()
})
for (const env of [
{
name: 'root context',
fetchInit: undefined,
span: {
traceId: '[trace-id]',
rootParentId: undefined,
},
},
{
name: 'incoming context propagation',
fetchInit: {
headers: {
traceparent: `00-${EXTERNAL.traceId}-${EXTERNAL.spanId}-01`,
},
},
span: {
traceId: EXTERNAL.traceId,
rootParentId: EXTERNAL.spanId,
},
},
]) {
;(process.env.__NEXT_EXPERIMENTAL_PPR ? describe.skip : describe)(
env.name,
() => {
describe('app router', () => {
it('should handle RSC with fetch', async () => {
await next.fetch('/app/param/rsc-fetch', env.fetchInit)
await expectTrace(getCollector(), [
{
name: 'GET /app/[param]/rsc-fetch',
attributes: {
'http.method': 'GET',
'http.route': '/app/[param]/rsc-fetch',
'http.status_code': 200,
'http.target': '/app/param/rsc-fetch',
'next.route': '/app/[param]/rsc-fetch',
'next.rsc': false,
'next.span_name': 'GET /app/[param]/rsc-fetch',
'next.span_type': 'BaseServer.handleRequest',
},
kind: 1,
status: { code: 0 },
traceId: env.span.traceId,
parentId: env.span.rootParentId,
spans: [
{
name: 'render route (app) /app/[param]/rsc-fetch',
attributes: {
'next.route': '/app/[param]/rsc-fetch',
'next.span_name':
'render route (app) /app/[param]/rsc-fetch',
'next.span_type': 'AppRender.getBodyResult',
},
kind: 0,
status: { code: 0 },
spans: [
{
name: 'build component tree',
attributes: {
'next.span_name': 'build component tree',
'next.span_type':
'NextNodeServer.createComponentTree',
},
kind: 0,
status: { code: 0 },
spans: [
{
name: 'resolve segment modules',
attributes: {
'next.segment': '__PAGE__',
'next.span_name': 'resolve segment modules',
'next.span_type':
'NextNodeServer.getLayoutOrPageModule',
},
kind: 0,
status: { code: 0 },
},
{
name: 'resolve segment modules',
attributes: {
'next.segment': '[param]',
'next.span_name': 'resolve segment modules',
'next.span_type':
'NextNodeServer.getLayoutOrPageModule',
},
kind: 0,
status: { code: 0 },
},
],
},
{
name: 'fetch GET https://example.vercel.sh/',
attributes: {
'http.method': 'GET',
'http.url': 'https://example.vercel.sh/',
'net.peer.name': 'example.vercel.sh',
'next.span_name':
'fetch GET https://example.vercel.sh/',
'next.span_type': 'AppRender.fetch',
},
kind: 2,
status: { code: 0 },
},
{
name: 'generateMetadata /app/[param]/layout',
attributes: {
'next.page': '/app/[param]/layout',
'next.span_name':
'generateMetadata /app/[param]/layout',
'next.span_type': 'ResolveMetadata.generateMetadata',
},
kind: 0,
status: { code: 0 },
},
{
name: 'generateMetadata /app/[param]/rsc-fetch/page',
attributes: {
'next.page': '/app/[param]/rsc-fetch/page',
'next.span_name':
'generateMetadata /app/[param]/rsc-fetch/page',
'next.span_type': 'ResolveMetadata.generateMetadata',
},
kind: 0,
status: { code: 0 },
},
{
attributes: {
'next.clientComponentLoadCount': isNextDev
? // In dev, additional client components are being loaded
// due to RSC props being deserialized.
11
: 8,
'next.span_type':
'NextNodeServer.clientComponentLoading',
},
kind: 0,
name: 'NextNodeServer.clientComponentLoading',
status: {
code: 0,
},
},
{
name: 'start response',
attributes: {
'next.span_name': 'start response',
'next.span_type': 'NextNodeServer.startResponse',
},
kind: 0,
status: { code: 0 },
},
],
},
{
name: 'resolve page components',
attributes: {
'next.route': '/app/[param]/rsc-fetch',
'next.span_name': 'resolve page components',
'next.span_type': 'NextNodeServer.findPageComponents',
},
kind: 0,
status: { code: 0 },
},
],
},
])
})
it('should propagate custom context without span', async () => {
await next.fetch('/app/param/rsc-fetch', {
...env.fetchInit,
headers: { ...env.fetchInit?.headers, 'x-custom': 'custom1' },
})
await expectTrace(getCollector(), [
{
name: 'GET /app/[param]/rsc-fetch',
attributes: {
custom: 'custom1',
},
},
])
})
it('should handle RSC with fetch on edge', async () => {
await next.fetch('/app/param/rsc-fetch/edge', env.fetchInit)
await expectTrace(getCollector(), [
{
traceId: env.span.traceId,
parentId: env.span.rootParentId,
runtime: 'edge',
name: 'GET /app/[param]/rsc-fetch/edge',
kind: 1,
attributes: {
'next.span_name': 'GET /app/[param]/rsc-fetch/edge',
'next.span_type': 'BaseServer.handleRequest',
'http.method': 'GET',
'http.target': '/app/param/rsc-fetch/edge?param=param',
'http.status_code': 200,
'next.route': '/app/[param]/rsc-fetch/edge',
'http.route': '/app/[param]/rsc-fetch/edge',
},
status: { code: 0 },
spans: [
{
name: 'render route (app) /app/[param]/rsc-fetch/edge',
kind: 0,
attributes: {
'next.span_name':
'render route (app) /app/[param]/rsc-fetch/edge',
'next.span_type': 'AppRender.getBodyResult',
'next.route': '/app/[param]/rsc-fetch/edge',
},
status: { code: 0 },
spans: [
{
name: 'build component tree',
kind: 0,
attributes: {
'next.span_name': 'build component tree',
'next.span_type':
'NextNodeServer.createComponentTree',
},
status: { code: 0 },
spans: [
{
name: 'resolve segment modules',
kind: 0,
attributes: {
'next.span_name': 'resolve segment modules',
'next.span_type':
'NextNodeServer.getLayoutOrPageModule',
'next.segment': '__PAGE__',
},
status: { code: 0 },
},
{
name: 'resolve segment modules',
kind: 0,
attributes: {
'next.span_name': 'resolve segment modules',
'next.span_type':
'NextNodeServer.getLayoutOrPageModule',
'next.segment': '[param]',
},
status: { code: 0 },
},
],
},
{
name: 'fetch GET https://example.vercel.sh/',
kind: 2,
attributes: {
'next.span_name':
'fetch GET https://example.vercel.sh/',
'next.span_type': 'AppRender.fetch',
'http.url': 'https://example.vercel.sh/',
'http.method': 'GET',
'net.peer.name': 'example.vercel.sh',
},
status: { code: 0 },
},
{
name: 'generateMetadata /app/[param]/layout',
kind: 0,
attributes: {
'next.span_name':
'generateMetadata /app/[param]/layout',
'next.span_type': 'ResolveMetadata.generateMetadata',
'next.page': '/app/[param]/layout',
},
status: { code: 0 },
},
{
name: 'generateMetadata /app/[param]/rsc-fetch/edge/page',
kind: 0,
attributes: {
'next.span_name':
'generateMetadata /app/[param]/rsc-fetch/edge/page',
'next.span_type': 'ResolveMetadata.generateMetadata',
'next.page': '/app/[param]/rsc-fetch/edge/page',
},
status: { code: 0 },
},
],
},
],
},
// TODO: what is this trace? What's the value in it?
{
traceId: env.span.traceId,
parentId: env.span.rootParentId,
runtime: 'nodejs',
name: 'GET /app/param/rsc-fetch/edge',
kind: 1,
attributes: {
'next.span_name': 'GET /app/param/rsc-fetch/edge',
'next.span_type': 'BaseServer.handleRequest',
'http.method': 'GET',
'http.target': '/app/param/rsc-fetch/edge',
'http.status_code': 200,
},
status: { code: 0 },
spans: [
{
name: 'start response',
kind: 0,
attributes: {
'next.span_name': 'start response',
'next.span_type': 'NextNodeServer.startResponse',
},
status: { code: 0 },
},
],
},
])
})
it('should handle RSC with fetch in RSC mode', async () => {
await next.fetch('/app/param/rsc-fetch', {
...env.fetchInit,
headers: {
...env.fetchInit?.headers,
Rsc: '1',
},
})
await expectTrace(getCollector(), [
{
runtime: 'nodejs',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'RSC GET /app/[param]/rsc-fetch',
attributes: {
'http.method': 'GET',
'http.route': '/app/[param]/rsc-fetch',
'http.status_code': 200,
'http.target': '/app/param/rsc-fetch',
'next.route': '/app/[param]/rsc-fetch',
'next.rsc': true,
'next.span_name': 'RSC GET /app/[param]/rsc-fetch',
'next.span_type': 'BaseServer.handleRequest',
},
kind: 1,
status: { code: 0 },
},
])
})
it('should handle route handlers in app router', async () => {
await next.fetch('/api/app/param/data', env.fetchInit)
await expectTrace(getCollector(), [
{
name: 'GET /api/app/[param]/data/route',
attributes: {
'http.method': 'GET',
'http.route': '/api/app/[param]/data/route',
'http.status_code': 200,
'http.target': '/api/app/param/data',
'next.route': '/api/app/[param]/data/route',
'next.span_name': 'GET /api/app/[param]/data/route',
'next.span_type': 'BaseServer.handleRequest',
},
kind: 1,
status: { code: 0 },
traceId: env.span.traceId,
parentId: env.span.rootParentId,
spans: [
{
name: 'executing api route (app) /api/app/[param]/data/route',
attributes: {
'next.route': '/api/app/[param]/data/route',
'next.span_name':
'executing api route (app) /api/app/[param]/data/route',
'next.span_type': 'AppRouteRouteHandlers.runHandler',
},
kind: 0,
status: { code: 0 },
},
{
name: 'resolve page components',
attributes: {
'next.route': '/api/app/[param]/data',
'next.span_name': 'resolve page components',
'next.span_type': 'NextNodeServer.findPageComponents',
},
kind: 0,
status: { code: 0 },
},
{
name: 'start response',
attributes: {
'next.span_name': 'start response',
'next.span_type': 'NextNodeServer.startResponse',
},
kind: 0,
status: { code: 0 },
},
],
},
])
})
it('should handle route handlers in app router on edge', async () => {
await next.fetch('/api/app/param/data/edge', env.fetchInit)
await expectTrace(getCollector(), [
{
runtime: 'edge',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'executing api route (app) /api/app/[param]/data/edge/route',
attributes: {
'next.route': '/api/app/[param]/data/edge/route',
'next.span_name':
'executing api route (app) /api/app/[param]/data/edge/route',
'next.span_type': 'AppRouteRouteHandlers.runHandler',
},
kind: 0,
status: { code: 0 },
},
// TODO: what is this trace? What's the value in it?
{
runtime: 'nodejs',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'GET /api/app/param/data/edge',
kind: 1,
attributes: {
'next.span_name': 'GET /api/app/param/data/edge',
'next.span_type': 'BaseServer.handleRequest',
'http.method': 'GET',
'http.target': '/api/app/param/data/edge',
'http.status_code': 200,
},
status: { code: 0 },
spans: [
{
name: 'start response',
kind: 0,
attributes: {
'next.span_name': 'start response',
'next.span_type': 'NextNodeServer.startResponse',
},
status: { code: 0 },
},
],
},
])
})
it('should trace middleware', async () => {
await next.fetch('/behind-middleware', env.fetchInit)
await expectTrace(getCollector(), [
{
runtime: 'edge',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'middleware GET /behind-middleware',
attributes: {
'http.method': 'GET',
'http.target': '/behind-middleware',
'next.span_name': 'middleware GET /behind-middleware',
'next.span_type': 'Middleware.execute',
},
status: { code: 0 },
spans: [],
},
{
runtime: 'nodejs',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'GET /behind-middleware',
attributes: {
'http.method': 'GET',
'http.route': '/behind-middleware',
'http.status_code': 200,
'http.target': '/behind-middleware',
'next.route': '/behind-middleware',
'next.span_name': 'GET /behind-middleware',
'next.span_type': 'BaseServer.handleRequest',
},
},
])
})
})
describe('pages', () => {
it('should handle getServerSideProps', async () => {
await next.fetch('/pages/param/getServerSideProps', env.fetchInit)
await expectTrace(getCollector(), [
{
name: 'GET /pages/[param]/getServerSideProps',
attributes: {
'http.method': 'GET',
'http.route': '/pages/[param]/getServerSideProps',
'http.status_code': 200,
'http.target': '/pages/param/getServerSideProps',
'next.route': '/pages/[param]/getServerSideProps',
'next.span_name': 'GET /pages/[param]/getServerSideProps',
'next.span_type': 'BaseServer.handleRequest',
},
kind: 1,
status: { code: 0 },
traceId: env.span.traceId,
parentId: env.span.rootParentId,
spans: [
{
name: 'getServerSideProps /pages/[param]/getServerSideProps',
attributes: {
'next.route': '/pages/[param]/getServerSideProps',
'next.span_name':
'getServerSideProps /pages/[param]/getServerSideProps',
'next.span_type': 'Render.getServerSideProps',
},
kind: 0,
status: { code: 0 },
},
{
name: 'render route (pages) /pages/[param]/getServerSideProps',
attributes: {
'next.route': '/pages/[param]/getServerSideProps',
'next.span_name':
'render route (pages) /pages/[param]/getServerSideProps',
'next.span_type': 'Render.renderDocument',
},
kind: 0,
status: { code: 0 },
},
{
name: 'resolve page components',
attributes: {
'next.route': '/pages/[param]/getServerSideProps',
'next.span_name': 'resolve page components',
'next.span_type': 'NextNodeServer.findPageComponents',
},
kind: 0,
status: { code: 0 },
},
],
},
])
})
it("should handle getStaticProps when fallback: 'blocking'", async () => {
const v = env.span.rootParentId ? '2' : ''
await next.fetch(`/pages/param/getStaticProps${v}`, env.fetchInit)
await expectTrace(getCollector(), [
{
name: `GET /pages/[param]/getStaticProps${v}`,
attributes: {
'http.method': 'GET',
'http.route': `/pages/[param]/getStaticProps${v}`,
'http.status_code': 200,
'http.target': `/pages/param/getStaticProps${v}`,
'next.route': `/pages/[param]/getStaticProps${v}`,
'next.span_name': `GET /pages/[param]/getStaticProps${v}`,
'next.span_type': 'BaseServer.handleRequest',
},
kind: 1,
status: { code: 0 },
traceId: env.span.traceId,
parentId: env.span.rootParentId,
spans: [
{
name: `getStaticProps /pages/[param]/getStaticProps${v}`,
attributes: {
'next.route': `/pages/[param]/getStaticProps${v}`,
'next.span_name': `getStaticProps /pages/[param]/getStaticProps${v}`,
'next.span_type': 'Render.getStaticProps',
},
kind: 0,
status: { code: 0 },
},
{
name: `render route (pages) /pages/[param]/getStaticProps${v}`,
attributes: {
'next.route': `/pages/[param]/getStaticProps${v}`,
'next.span_name': `render route (pages) /pages/[param]/getStaticProps${v}`,
'next.span_type': 'Render.renderDocument',
},
kind: 0,
status: { code: 0 },
},
{
name: 'resolve page components',
attributes: {
'next.route': `/pages/[param]/getStaticProps${v}`,
'next.span_name': 'resolve page components',
'next.span_type': 'NextNodeServer.findPageComponents',
},
kind: 0,
status: { code: 0 },
},
],
},
])
})
it('should handle getServerSideProps on edge', async () => {
await next.fetch(
'/pages/param/edge/getServerSideProps',
env.fetchInit
)
await expectTrace(getCollector(), [
{
runtime: 'edge',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'GET /pages/[param]/edge/getServerSideProps',
kind: 1,
attributes: {
'next.span_name':
'GET /pages/[param]/edge/getServerSideProps',
'next.span_type': 'BaseServer.handleRequest',
'http.method': 'GET',
'http.target':
'/pages/param/edge/getServerSideProps?param=param',
'http.status_code': 200,
'next.route': '/pages/[param]/edge/getServerSideProps',
'http.route': '/pages/[param]/edge/getServerSideProps',
},
status: { code: 0 },
spans: [
{
name: 'getServerSideProps /pages/[param]/edge/getServerSideProps',
kind: 0,
attributes: {
'next.span_name':
'getServerSideProps /pages/[param]/edge/getServerSideProps',
'next.span_type': 'Render.getServerSideProps',
'next.route': '/pages/[param]/edge/getServerSideProps',
},
status: { code: 0 },
},
{
name: 'render route (pages) /pages/[param]/edge/getServerSideProps',
kind: 0,
attributes: {
'next.span_name':
'render route (pages) /pages/[param]/edge/getServerSideProps',
'next.span_type': 'Render.renderDocument',
'next.route': '/pages/[param]/edge/getServerSideProps',
},
status: { code: 0 },
},
],
},
// TODO: what is this trace? What's the value in it?
{
runtime: 'nodejs',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'GET /pages/param/edge/getServerSideProps',
kind: 1,
attributes: {
'next.span_name': 'GET /pages/param/edge/getServerSideProps',
'next.span_type': 'BaseServer.handleRequest',
'http.method': 'GET',
'http.target': '/pages/param/edge/getServerSideProps',
'http.status_code': 200,
},
status: { code: 0 },
spans: [
{
name: 'start response',
kind: 0,
attributes: {
'next.span_name': 'start response',
'next.span_type': 'NextNodeServer.startResponse',
},
status: { code: 0 },
},
],
},
])
})
it('should handle api routes in pages', async () => {
await next.fetch('/api/pages/param/basic', env.fetchInit)
await expectTrace(getCollector(), [
{
name: 'GET /api/pages/[param]/basic',
attributes: {
'http.method': 'GET',
'http.route': '/api/pages/[param]/basic',
'http.status_code': 200,
'http.target': '/api/pages/param/basic',
'next.route': '/api/pages/[param]/basic',
'next.span_name': 'GET /api/pages/[param]/basic',
'next.span_type': 'BaseServer.handleRequest',
},
kind: 1,
status: { code: 0 },
traceId: env.span.traceId,
parentId: env.span.rootParentId,
spans: [
{
name: 'executing api route (pages) /api/pages/[param]/basic',
attributes: {
'next.span_name':
'executing api route (pages) /api/pages/[param]/basic',
'next.span_type': 'Node.runHandler',
},
kind: 0,
status: { code: 0 },
},
],
},
])
})
it('should handle api routes in pages on edge', async () => {
await next.fetch('/api/pages/param/edge', env.fetchInit)
await expectTrace(getCollector(), [
{
runtime: 'edge',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'executing api route (pages) /api/pages/[param]/edge',
attributes: {
'next.span_name':
'executing api route (pages) /api/pages/[param]/edge',
'next.span_type': 'Node.runHandler',
},
kind: 0,
status: { code: 0 },
},
// TODO: what is this trace? What's the value in it?
{
runtime: 'nodejs',
traceId: env.span.traceId,
parentId: env.span.rootParentId,
name: 'GET /api/pages/param/edge',
kind: 1,
attributes: {
'next.span_name': 'GET /api/pages/param/edge',
'next.span_type': 'BaseServer.handleRequest',
'http.method': 'GET',
'http.target': '/api/pages/param/edge',
'http.status_code': 200,
},
status: { code: 0 },
spans: [
{
name: 'start response',
kind: 0,
attributes: {
'next.span_name': 'start response',
'next.span_type': 'NextNodeServer.startResponse',
},
status: { code: 0 },
},
],
},
])
})
})
}
)
}
})
describe('opentelemetry with disabled fetch tracing', () => {
const { next, skipped } = nextTestSetup({
files: __dirname,
skipDeployment: true,
dependencies: require('./package.json').dependencies,
env: {
NEXT_OTEL_FETCH_DISABLED: '1',
TEST_OTEL_COLLECTOR_PORT: String(COLLECTOR_PORT),
},
})
if (skipped) {
return
}
let collector: Collector
function getCollector(): Collector {
return collector
}
beforeEach(async () => {
collector = await connectCollector({ port: COLLECTOR_PORT })
})
afterEach(async () => {
await collector.shutdown()
})
;(process.env.__NEXT_EXPERIMENTAL_PPR ? describe.skip : describe)(
'root context',
() => {
describe('app router with disabled fetch', () => {
it('should handle RSC with disabled fetch', async () => {
await next.fetch('/app/param/rsc-fetch')
await expectTrace(getCollector(), [
{
name: 'GET /app/[param]/rsc-fetch',
traceId: '[trace-id]',
parentId: undefined,
spans: [
{
name: 'render route (app) /app/[param]/rsc-fetch',
spans: [
{
name: 'build component tree',
spans: [
{
name: 'resolve segment modules',
},
{
name: 'resolve segment modules',
},
],
},
{
name: 'generateMetadata /app/[param]/layout',
},
{
name: 'generateMetadata /app/[param]/rsc-fetch/page',
},
{
name: 'NextNodeServer.clientComponentLoading',
},
{
name: 'start response',
},
],
},
{
name: 'resolve page components',
},
],
},
])
})
})
}
)
})
type HierSavedSpan = SavedSpan & { spans?: HierSavedSpan[] }
type SpanMatch = Omit<Partial<HierSavedSpan>, 'spans'> & { spans?: SpanMatch[] }
async function expectTrace(collector: Collector, match: SpanMatch[]) {
await check(async () => {
const traces = collector.getSpans()
const tree: HierSavedSpan[] = []
const spansForTree: HierSavedSpan[] = traces.map((span) => ({
...span,
spans: [],
}))
for (const span of spansForTree) {
const parent =
!span.parentId || span.parentId === EXTERNAL.spanId
? null
: spansForTree.find((s) => s.id === span.parentId)
if (parent) {
parent.spans.push(span)
} else {
tree.push(span)
}
}
for (const span of spansForTree) {
delete span.duration
delete span.timestamp
span.traceId =
span.traceId === EXTERNAL.traceId ? span.traceId : '[trace-id]'
span.parentId = span.parentId || undefined
span.spans.sort((a, b) => {
const nameDiff = a.name.localeCompare(b.name)
if (nameDiff !== 0) {
return nameDiff
}
return (
(a.attributes?.['next.segment'] ?? '').localeCompare(
b.attributes?.['next.segment'] ?? ''
) ?? 0
)
})
}
tree.sort((a, b) => {
const runtimeDiff = (a.runtime ?? '').localeCompare(b.runtime ?? '')
if (runtimeDiff !== 0) {
return runtimeDiff
}
return a.name.localeCompare(b.name)
})
expect(tree).toMatchObject(match)
return 'success'
}, 'success')
}