chore(otel): bump semconv v1.21.0 -> v1.40.0 and pin schema_url

Author: krisztianfekete

internal/ateclient/builder.go

@@ -30,7 +30,7 @@ import (
 	"go.opentelemetry.io/otel/propagation"
 	"go.opentelemetry.io/otel/sdk/resource"
 	sdktrace "go.opentelemetry.io/otel/sdk/trace"
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.40.0"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
 
@@ -308,6 +308,7 @@ func (c bearerTokenCreds) RequireTransportSecurity() bool { return true }
 
 func initTracing(ctx context.Context, enabled bool) (*sdktrace.TracerProvider, error) {
 	res, err := resource.New(ctx,
+		resource.WithSchemaURL(semconv.SchemaURL),
 		resource.WithAttributes(
 			semconv.UserAgentOriginal("kubectl-ate"),
 		),

internal/benchmarking/boomer/trace/trace.go

@@ -30,7 +30,7 @@ import (
 	"go.opentelemetry.io/otel/propagation"
 	"go.opentelemetry.io/otel/sdk/resource"
 	sdktrace "go.opentelemetry.io/otel/sdk/trace"
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.40.0"
 )
 
 // UpdatableSampler wraps a TraceIDRatioBased sampler whose probability can
@@ -70,6 +70,7 @@ func Init(ctx context.Context, serviceName string, sampler sdktrace.Sampler) (*s
 	}
 	res, err := resource.New(ctx,
 		resource.WithTelemetrySDK(),
+		resource.WithSchemaURL(semconv.SchemaURL),
 		resource.WithAttributes(
 			semconv.ServiceName(serviceName),
 			semconv.ServiceInstanceID(uuid.NewString()),

internal/serverboot/serverboot.go

@@ -38,7 +38,7 @@ import (
 	sdkmetric "go.opentelemetry.io/otel/sdk/metric"
 	"go.opentelemetry.io/otel/sdk/resource"
 	sdktrace "go.opentelemetry.io/otel/sdk/trace"
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.40.0"
 )
 
 // InitLogger sets the global slog logger to a JSON handler wrapped in
@@ -62,6 +62,9 @@ var serviceInstanceID = uuid.NewString()
 func newResource(ctx context.Context, serviceName string) (*resource.Resource, error) {
 	res, err := resource.New(ctx,
 		resource.WithTelemetrySDK(),
+		// Must track the schema version the SDK's own detectors emit, else the
+		// merge drops the schema URL with ErrSchemaURLConflict (tolerated below).
+		resource.WithSchemaURL(semconv.SchemaURL),
 		resource.WithAttributes(
 			semconv.ServiceName(serviceName),
 			semconv.ServiceInstanceID(serviceInstanceID),