Tidy up responses for POST requests.

.golangci.yml

@@ -157,12 +157,10 @@ linters:
   # https://golangci-lint.run/usage/linters/#disabled-by-default
   disable:
     - cyclop
-    - deadcode
     - depguard
     - dupl
     - execinquery
     - exhaustive
-    - exhaustivestruct
     - exhaustruct
     - forcetypeassert
     - funlen
@@ -172,21 +170,13 @@ linters:
     - gocognit
     - goconst
     - err113
-    - golint
     - gomnd
-    - ifshort
-    - interfacer
     - ireturn
     - lll
     - maintidx
-    - maligned
     - mnd
     - musttag
-    - nosnakecase
     - perfsprint
-    - scopelint
-    - structcheck
-    - varcheck
     - varnamelen
     - wrapcheck
     - wsl

http/http.go

@@ -38,6 +38,9 @@ const defaultUserAgent = "go-eth2-client/0.21.4"
 
 // post sends an HTTP post request and returns the body.
 func (s *Service) post(ctx context.Context, endpoint string, body io.Reader) (io.Reader, error) {
+	ctx, span := otel.Tracer("attestantio.go-eth2-client.http").Start(ctx, "post")
+	defer span.End()
+
 	// #nosec G404
 	log := s.log.With().Str("id", fmt.Sprintf("%02x", rand.Int31())).Str("address", s.address).Str("endpoint", endpoint).Logger()
 	if e := log.Trace(); e.Enabled() {
@@ -51,13 +54,18 @@ func (s *Service) post(ctx context.Context, endpoint string, body io.Reader) (io
 	}
 
 	callURL := urlForCall(s.base, endpoint, "")
+	log.Trace().Str("url", callURL.String()).Msg("URL to POST")
+	span.SetAttributes(attribute.String("url", callURL.String()))
 
 	opCtx, cancel := context.WithTimeout(ctx, s.timeout)
 	defer cancel()
 	req, err := http.NewRequestWithContext(opCtx, http.MethodPost, callURL.String(), body)
 	if err != nil {
+		span.SetStatus(codes.Error, "Failed to create request")
+
 		return nil, errors.Join(errors.New("failed to create POST request"), err)
 	}
+
 	s.addExtraHeaders(req)
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Accept", "application/json")
@@ -68,21 +76,29 @@ func (s *Service) post(ctx context.Context, endpoint string, body io.Reader) (io
 	resp, err := s.client.Do(req)
 	if err != nil {
 		go s.CheckConnectionState(ctx)
+
+		span.SetStatus(codes.Error, err.Error())
 		s.monitorPostComplete(ctx, callURL.Path, "failed")
 
 		return nil, errors.Join(errors.New("failed to call POST endpoint"), err)
 	}
 	defer resp.Body.Close()
+	log = log.With().Int("status_code", resp.StatusCode).Logger()
 
 	data, err := io.ReadAll(resp.Body)
 	if err != nil {
+		span.SetStatus(codes.Error, err.Error())
+		s.monitorPostComplete(ctx, callURL.Path, "failed")
+
 		return nil, errors.Join(errors.New("failed to read POST response"), err)
 	}
 
 	statusFamily := resp.StatusCode / 100
 	if statusFamily != 2 {
-		log.Debug().Int("status_code", resp.StatusCode).Str("data", string(data)).Msg("POST failed")
+		trimmedResponse := bytes.ReplaceAll(bytes.ReplaceAll(data, []byte{0x0a}, []byte{}), []byte{0x0d}, []byte{})
+		log.Debug().Int("status_code", resp.StatusCode).RawJSON("response", trimmedResponse).Msg("POST failed")
 
+		span.SetStatus(codes.Error, fmt.Sprintf("Status code %d", resp.StatusCode))
 		s.monitorPostComplete(ctx, callURL.Path, "failed")
 
 		return nil, &api.Error{
@@ -225,8 +241,12 @@ func (s *Service) post2(ctx context.Context,
 
 	statusFamily := resp.StatusCode / 100
 	if statusFamily != 2 {
-		trimmedResponse := bytes.ReplaceAll(bytes.ReplaceAll(res.body, []byte{0x0a}, []byte{}), []byte{0x0d}, []byte{})
-		log.Debug().Int("status_code", resp.StatusCode).RawJSON("response", trimmedResponse).Msg("POST failed")
+		if res.contentType == ContentTypeJSON {
+			trimmedResponse := bytes.ReplaceAll(bytes.ReplaceAll(res.body, []byte{0x0a}, []byte{}), []byte{0x0d}, []byte{})
+			log.Debug().Int("status_code", resp.StatusCode).RawJSON("response", trimmedResponse).Msg("POST failed")
+		} else {
+			log.Debug().Int("status_code", resp.StatusCode).Msg("POST failed")
+		}
 
 		span.SetStatus(codes.Error, fmt.Sprintf("Status code %d", resp.StatusCode))
 		s.monitorPostComplete(ctx, callURL.Path, "failed")