fix(http): use route name from 'r.Pattern' instead

http/sentryhttp.go

@@ -4,11 +4,11 @@ package sentryhttp
 
 import (
 	"context"
-	"fmt"
 	"net/http"
 	"time"
 
 	"github.com/getsentry/sentry-go"
+	"github.com/getsentry/sentry-go/internal/traceutils"
 )
 
 // The identifier of the HTTP SDK.
@@ -102,7 +102,7 @@ func (h *Handler) handle(handler http.Handler) http.HandlerFunc {
 		}
 
 		transaction := sentry.StartTransaction(ctx,
-			fmt.Sprintf("%s %s", r.Method, r.URL.Path),
+			traceutils.GetHTTPSpanName(r),
 			options...,
 		)
 		transaction.SetData("http.request.method", r.Method)

internal/traceutils/route_name_below_go1.23.go

@@ -0,0 +1,10 @@
+//go:build !go1.23
+
+package traceutils
+
+import "net/http"
+
+// GetHTTPSpanName grab needed fields from *http.Request to generate a span name for `http.server` span op.
+func GetHTTPSpanName(r *http.Request) string {
+	return r.Method + " " + r.URL.Path
+}

internal/traceutils/route_name_below_go1.23_test.go

@@ -0,0 +1,30 @@
+//go:build !go1.23
+
+package traceutils
+
+import (
+	"net/http"
+	"net/url"
+	"testing"
+)
+
+func TestGetHTTPSpanName(t *testing.T) {
+	tests := []struct {
+		name string
+		got  string
+		want string
+	}{
+		{
+			name: "Without Pattern",
+			got:  GetHTTPSpanName(&http.Request{Method: "GET", URL: &url.URL{Path: "/"}}),
+			want: "GET /",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.got != tt.want {
+				t.Errorf("got %q; want %q", tt.got, tt.want)
+			}
+		})
+	}
+}

internal/traceutils/route_name_go1.23.go

@@ -0,0 +1,23 @@
+//go:build go1.23
+
+package traceutils
+
+import (
+	"net/http"
+	"strings"
+)
+
+// GetHTTPSpanName grab needed fields from *http.Request to generate a span name for `http.server` span op.
+func GetHTTPSpanName(r *http.Request) string {
+	if r.Pattern != "" {
+		// If value does not start with HTTP methods, add them.
+		// The method and the path should be separated by a space.
+		if parts := strings.SplitN(r.Pattern, " ", 2); len(parts) == 1 {
+			return r.Method + " " + r.Pattern
+		}
+
+		return r.Pattern
+	}
+
+	return r.Method + " " + r.URL.Path
+}

internal/traceutils/route_name_go1.23_test.go

@@ -0,0 +1,45 @@
+//go:build go1.23
+
+package traceutils
+
+import (
+	"net/http"
+	"net/url"
+	"testing"
+)
+
+func TestGetHTTPSpanName(t *testing.T) {
+	tests := []struct {
+		name string
+		got  string
+		want string
+	}{
+		{
+			name: "Without Pattern",
+			got:  GetHTTPSpanName(&http.Request{Method: "GET", URL: &url.URL{Path: "/"}}),
+			want: "GET /",
+		},
+		{
+			name: "Pattern with method",
+			got:  GetHTTPSpanName(&http.Request{Method: "GET", URL: &url.URL{Path: "/"}, Pattern: "POST /foo/{bar}"}),
+			want: "POST /foo/{bar}",
+		},
+		{
+			name: "Pattern without method",
+			got:  GetHTTPSpanName(&http.Request{Method: "GET", URL: &url.URL{Path: "/"}, Pattern: "/foo/{bar}"}),
+			want: "GET /foo/{bar}",
+		},
+		{
+			name: "Pattern without slash",
+			got:  GetHTTPSpanName(&http.Request{Method: "GET", URL: &url.URL{Path: "/"}, Pattern: "example.com/"}),
+			want: "GET example.com/",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.got != tt.want {
+				t.Errorf("got %q; want %q", tt.got, tt.want)
+			}
+		})
+	}
+}

negroni/sentrynegroni.go

@@ -2,11 +2,11 @@ package sentrynegroni
 
 import (
 	"context"
-	"fmt"
 	"net/http"
 	"time"
 
 	"github.com/getsentry/sentry-go"
+	"github.com/getsentry/sentry-go/internal/traceutils"
 	"github.com/urfave/negroni"
 )
 
@@ -87,7 +87,7 @@ func (h *handler) ServeHTTP(w http.ResponseWriter, r *http.Request, next http.Ha
 	// We don't mind getting an existing transaction back so we don't need to
 	// check if it is.
 	transaction := sentry.StartTransaction(ctx,
-		fmt.Sprintf("%s %s", r.Method, r.URL.Path),
+		traceutils.GetHTTPSpanName(r),
 		options...,
 	)
 	transaction.SetData("http.request.method", r.Method)