Fix Http Status Code with Otel Bridge (#3265)

* Fix Http Status Code with Otel Bridge

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

CHANGELOG.md

@@ -39,6 +39,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 - Flush pending measurements with the `PeriodicReader` in the `go.opentelemetry.io/otel/sdk/metric` when `ForceFlush` or `Shutdown` are called. (#3220)
 - Update histogram default bounds to match the requirements of the latest specification. (#3222)
+- Encode the HTTP status code in the OpenTracing bridge (`go.opentelemetry.io/otel/bridge/opentracing`) as an integer.  (#3265)
 
 ### Fixed
 

bridge/opentracing/bridge.go

@@ -546,6 +546,14 @@ func otTagToOTelAttr(k string, v interface{}) attribute.KeyValue {
 		return key.String(fmt.Sprintf("%d", val))
 	case float64:
 		return key.Float64(val)
+	case int8:
+		return key.Int64(int64(val))
+	case uint8:
+		return key.Int64(int64(val))
+	case int16:
+		return key.Int64(int64(val))
+	case uint16:
+		return key.Int64(int64(val))
 	case int32:
 		return key.Int64(int64(val))
 	case uint32:

bridge/opentracing/bridge_test.go

@@ -17,7 +17,9 @@ package opentracing
 import (
 	"context"
 	"errors"
+	"fmt"
 	"net/http"
+	"reflect"
 	"strings"
 	"testing"
 
@@ -26,6 +28,7 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/bridge/opentracing/internal"
 	"go.opentelemetry.io/otel/propagation"
 	"go.opentelemetry.io/otel/trace"
@@ -428,6 +431,38 @@ func TestBridgeTracer_StartSpan(t *testing.T) {
 	}
 }
 
+func Test_otTagToOTelAttr(t *testing.T) {
+	key := attribute.Key("test")
+	testCases := []struct {
+		value    interface{}
+		expected attribute.KeyValue
+	}{
+		{
+			value:    int8(12),
+			expected: key.Int64(int64(12)),
+		},
+		{
+			value:    uint8(12),
+			expected: key.Int64(int64(12)),
+		},
+		{
+			value:    int16(12),
+			expected: key.Int64(int64(12)),
+		},
+		{
+			value:    uint16(12),
+			expected: key.Int64(int64(12)),
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(fmt.Sprintf("%s %v", reflect.TypeOf(tc.value), tc.value), func(t *testing.T) {
+			att := otTagToOTelAttr(string(key), tc.value)
+			assert.Equal(t, tc.expected, att)
+		})
+	}
+}
+
 func Test_otTagsToOTelAttributesKindAndError(t *testing.T) {
 	tracer := internal.NewMockTracer()
 	sc := &bridgeSpanContext{}