sgnrslv/go-trarelic

GO-trarelic

Prerequisites

Opentracing tracer must be instantiated and achievable via opentracing.GlobalTracer() or passed directly via option trarelic.WithTracer().

Description

Trarelic creates opentracing span with some tags needed in pulsometer:

• is_external
• type
• caller

You must instrument your code by wrapping the http transport used in external requests.

E.g.:

Wrap existing transport

client := &http.Client{
	Timeout: 10 * time.Second,
	Transport: trarelic.NewRoundTripper(
		&http.Transport{
			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
		},
	),
}

http.DefaultTransport will be used by default if nil is passed

client := &http.Client{
	Transport: trarelic.NewRoundTripper(nil),
}

With functional options

client := &http.Client{
	Transport: trarelic.NewRoundTripper(
		nil,
		trarelic.WithTracer(opentracing.GlobalTracer()),
		trarelic.WithNewSpan(true),
		trarelic.WithType("background"),
		trarelic.WithCaller("bin/i_am_bin"),
		trarelic.WithPostfix("additional info about the call"),
	),
}

See godoc for more information.