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fix(nextjs): Use preprocessEvent hook to improve span data #14007

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Merged
merged 3 commits into from
Oct 17, 2024
Merged

fix(nextjs): Use preprocessEvent hook to improve span data #14007

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fix(nextjs): Use `preprocessEvent` hook to improve span data
Oct 17, 2024
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Oct 17, 2024
2cc480a
Merge remote-tracking branch 'origin/lforst-nextjs-otel' into lforst-…
Oct 17, 2024
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105 changes: 53 additions & 52 deletions packages/nextjs/src/server/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -241,6 +241,22 @@ export function init(options: NodeOptions): NodeClient | undefined {
return null;
}

// Next.js 13 sometimes names the root transactions like this containing useless tracing.
if (event.transaction === 'NextServer.getRequestHandler') {
return null;
}

// Next.js 13 is not correctly picking up tracing data for trace propagation so we use a back-fill strategy
if (typeof event.contexts?.trace?.data?.[TRANSACTION_ATTR_SENTRY_TRACE_BACKFILL] === 'string') {
const traceparentData = extractTraceparentData(
event.contexts.trace.data[TRANSACTION_ATTR_SENTRY_TRACE_BACKFILL],
);

if (traceparentData?.parentSampled === false) {
return null;
}
}

return event;
} else {
return event;
Expand Down Expand Up @@ -285,63 +301,48 @@ export function init(options: NodeOptions): NodeClient | undefined {
),
);

getGlobalScope().addEventProcessor(
Object.assign(
(event => {
// Enhance route handler transactions
if (
event.type === 'transaction' &&
event.contexts?.trace?.data?.['next.span_type'] === 'BaseServer.handleRequest'
) {
event.contexts.trace.data = event.contexts.trace.data || {};
event.contexts.trace.data[SEMANTIC_ATTRIBUTE_SENTRY_OP] = 'http.server';
event.contexts.trace.op = 'http.server';

if (event.transaction) {
event.transaction = stripUrlQueryAndFragment(event.transaction);
}

// eslint-disable-next-line deprecation/deprecation
const method = event.contexts.trace.data[SEMATTRS_HTTP_METHOD];
const route = event.contexts.trace.data[ATTR_HTTP_ROUTE];
if (typeof method === 'string' && typeof route === 'string') {
event.transaction = `${method} ${route.replace(/\/route$/, '')}`;
event.contexts.trace.data[SEMANTIC_ATTRIBUTE_SENTRY_SOURCE] = 'route';
}
}

// Next.js 13 is not correctly picking up tracing data for trace propagation so we use a back-fill strategy
if (
event.type === 'transaction' &&
typeof event.contexts?.trace?.data?.[TRANSACTION_ATTR_SENTRY_TRACE_BACKFILL] === 'string'
) {
const traceparentData = extractTraceparentData(
event.contexts.trace.data[TRANSACTION_ATTR_SENTRY_TRACE_BACKFILL],
);
// Use the preprocessEvent hook instead of an event processor, so that the users event processors receive the most
// up-to-date value, but also so that the logic that detects changes to the transaction names to set the source to
// "custom", doesn't trigger.
client?.on('preprocessEvent', event => {
// Enhance route handler transactions
if (
event.type === 'transaction' &&
event.contexts?.trace?.data?.['next.span_type'] === 'BaseServer.handleRequest'
) {
event.contexts.trace.data = event.contexts.trace.data || {};
event.contexts.trace.data[SEMANTIC_ATTRIBUTE_SENTRY_OP] = 'http.server';
event.contexts.trace.op = 'http.server';

if (traceparentData?.parentSampled === false) {
return null;
}
if (event.transaction) {
event.transaction = stripUrlQueryAndFragment(event.transaction);
}

if (traceparentData?.traceId) {
event.contexts.trace.trace_id = traceparentData.traceId;
}
// eslint-disable-next-line deprecation/deprecation
const method = event.contexts.trace.data[SEMATTRS_HTTP_METHOD];
const route = event.contexts.trace.data[ATTR_HTTP_ROUTE];
if (typeof method === 'string' && typeof route === 'string') {
event.transaction = `${method} ${route.replace(/\/route$/, '')}`;
event.contexts.trace.data[SEMANTIC_ATTRIBUTE_SENTRY_SOURCE] = 'route';
}
}

if (traceparentData?.parentSpanId) {
event.contexts.trace.parent_span_id = traceparentData.parentSpanId;
}
}
// Next.js 13 is not correctly picking up tracing data for trace propagation so we use a back-fill strategy
if (
event.type === 'transaction' &&
typeof event.contexts?.trace?.data?.[TRANSACTION_ATTR_SENTRY_TRACE_BACKFILL] === 'string'
) {
const traceparentData = extractTraceparentData(event.contexts.trace.data[TRANSACTION_ATTR_SENTRY_TRACE_BACKFILL]);

// Next.js 13 sometimes names the root transactions like this containing useless tracing.
if (event.type === 'transaction' && event.transaction === 'NextServer.getRequestHandler') {
return null;
}
if (traceparentData?.traceId) {
event.contexts.trace.trace_id = traceparentData.traceId;
}

return event;
}) satisfies EventProcessor,
{ id: 'NextjsTransactionEnhancer' },
),
);
if (traceparentData?.parentSpanId) {
event.contexts.trace.parent_span_id = traceparentData.parentSpanId;
}
}
});

if (process.env.NODE_ENV === 'development') {
getGlobalScope().addEventProcessor(devErrorSymbolicationEventProcessor);
Expand Down
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