78 lines
2.2 KiB
Go
78 lines
2.2 KiB
Go
package unitel
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import (
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"fmt"
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"net/http"
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"github.com/getsentry/sentry-go"
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"go.opentelemetry.io/otel/attribute"
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semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
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"go.opentelemetry.io/otel/trace"
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)
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const httpClientTransportClientID = libBase + "#HTTPTansport"
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type HTTPTransport struct {
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telemetry *Telemetry
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forwardTrace bool
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tracedRequestHeaders []string
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tracedResponseHeaders []string
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Transport http.RoundTripper
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tracer trace.Tracer
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}
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func (t *Telemetry) NewTracedTransport(transport http.RoundTripper, forwardTrace bool, tracedRequestHeaders []string, tracedResponseHeaders []string) *HTTPTransport {
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return &HTTPTransport{
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telemetry: t,
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forwardTrace: forwardTrace,
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tracedRequestHeaders: tracedRequestHeaders,
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tracedResponseHeaders: tracedResponseHeaders,
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Transport: transport,
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tracer: t.tracerProvider.Tracer(httpClientTransportClientID, trace.WithInstrumentationVersion(libVersion)),
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}
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}
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func (t *HTTPTransport) RoundTrip(req *http.Request) (*http.Response, error) {
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span := t.telemetry.
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StartSpan(req.Context(), "http.client", fmt.Sprintf("%s %s", req.Method, req.URL), WithOtelOptions(trace.WithSpanKind(trace.SpanKindClient))).
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AddAttributes(
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semconv.HTTPRequestMethodKey.String(req.Method),
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semconv.URLFull(req.URL.String()),
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)
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defer span.End()
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ctx := span.Context()
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req = req.WithContext(ctx)
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if t.forwardTrace {
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t.telemetry.InjectIntoHeaders(ctx, req.Header)
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}
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for _, header := range t.tracedRequestHeaders {
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if v := req.Header.Get(header); v != "" {
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span.AddAttributes(attribute.String(fmt.Sprintf("http.request.header.%s", header), v))
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}
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}
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resp, err := t.Transport.RoundTrip(req)
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if err != nil {
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if hub := sentry.GetHubFromContext(ctx); hub != nil {
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hub.CaptureException(err)
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}
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return resp, err
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}
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span.
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AddAttributes(semconv.HTTPResponseStatusCode(resp.StatusCode)).
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SetStatus(httpStatusToSpanStatus(resp.StatusCode, false), "")
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for _, header := range t.tracedResponseHeaders {
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if v := resp.Header.Get(header); v != "" {
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span.AddAttributes(attribute.String(fmt.Sprintf("http.response.header.%s", header), v))
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}
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}
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return resp, err
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}
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