contrib/aws/aws-sdk-go-v2: add NewTraceMiddleware function

contrib/aws/aws-sdk-go-v2/aws/aws.go

@@ -45,15 +45,26 @@ type spanTimestampKey struct{}
 // AppendMiddleware takes the aws.Config and adds the Datadog tracing middleware into the APIOptions middleware stack.
 // See https://aws.github.io/aws-sdk-go-v2/docs/middleware for more information.
 func AppendMiddleware(awsCfg *aws.Config, opts ...Option) {
- cfg := &config{}
+ tm := NewTraceMiddleware(opts...)
+ awsCfg.APIOptions = append(awsCfg.APIOptions, tm...)
+}
 
+// NewTraceMiddleware returns a new slice containing the tracing middleware.
+// See https://aws.github.io/aws-sdk-go-v2/docs/middleware for more information.
+func NewTraceMiddleware(opts ...Option) []func(*middleware.Stack) error {
+ cfg := &config{}
  defaults(cfg)
  for _, opt := range opts {
  opt(cfg)
  }
 
  tm := traceMiddleware{cfg: cfg}
- awsCfg.APIOptions = append(awsCfg.APIOptions, tm.initTraceMiddleware, tm.startTraceMiddleware, tm.deserializeTraceMiddleware)
+
+ return []func(*middleware.Stack) error{
+ tm.initTraceMiddleware,
+ tm.startTraceMiddleware,
+ tm.deserializeTraceMiddleware,
+ }
 }
 
 type traceMiddleware struct {