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docs: Fix Go distributed tracing example (#11854)
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* docs: Fix Go distributed tracing example

* Link to go agent v2 docs

---------

Co-authored-by: Brandon Morelli <[email protected]>
(cherry picked from commit 7e4babf)

# Conflicts:
#	docs/shared/distributed-trace-receive/distributed-trace-receive.asciidoc
Signed-off-by: Carson Ip <[email protected]>
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carsonip and bmorelli25 committed Oct 19, 2023
1 parent 68a3912 commit d0f4e1d
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Showing 2 changed files with 9 additions and 3 deletions.
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Expand Up @@ -2,9 +2,15 @@

// Need help with this example

<<<<<<< HEAD:docs/shared/distributed-trace-receive/distributed-trace-receive.asciidoc
1. Parse the incoming TraceContext with
https://godoc.org/go.elastic.co/apm/module/apmhttp#ParseTraceparentHeader[`ParseTraceparentHeader`] or
https://godoc.org/go.elastic.co/apm/module/apmhttp#ParseTracestateHeader[`ParseTracestateHeader`].
=======
1. Parse the incoming `TraceContext` with
https://pkg.go.dev/go.elastic.co/apm/module/apmhttp/v2#ParseTraceparentHeader[`ParseTraceparentHeader`] or
https://pkg.go.dev/go.elastic.co/apm/module/apmhttp/v2#ParseTracestateHeader[`ParseTracestateHeader`].
>>>>>>> 7e4babf9b (docs: Fix Go distributed tracing example (#11854)):docs/tab-widgets/distributed-trace-receive.asciidoc
2. Start a new transaction or span as a child of the incoming transaction with
{apm-go-ref}/api.html#tracer-api-start-transaction-options[`StartTransactionOptions`] or
Expand All @@ -21,7 +27,7 @@ traceContext.State, _ = apmhttp.ParseTracestateHeader(r.Header["Tracestate"]...)
opts := apm.TransactionOptions{
TraceContext: traceContext, <3>
}
transaction := apm.DefaultTracer.StartTransactionOptions("GET /", "request", opts) <4>
transaction := apm.DefaultTracer().StartTransactionOptions("GET /", "request", opts) <4>
----
<1> Parse the TraceParent header
<2> Parse the tracestate header
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Expand Up @@ -12,11 +12,11 @@ Example:

[source,go]
----
transaction := apm.DefaultTracer.StartTransaction("GET /", "request") <1>
transaction := apm.DefaultTracer().StartTransaction("GET /", "request") <1>
traceContext := transaction.TraceContext() <2>
// Send TraceContext to receiving service
traceparent := apmhttp.FormatTraceparentHeader(traceContext)) <3>
traceparent := apmhttp.FormatTraceparentHeader(traceContext) <3>
tracestate := traceContext.State.String()
----
<1> Start a transaction
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