1 files changed, 52 insertions, 14 deletions
diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/handlers.go b/vendor/github.com/aws/aws-sdk-go/aws/request/handlers.go
index 5279c19..6c14336 100644
--- a/vendor/github.com/aws/aws-sdk-go/aws/request/handlers.go
+++ b/vendor/github.com/aws/aws-sdk-go/aws/request/handlers.go
@@ -18,6 +18,7 @@ type Handlers struct {
 	UnmarshalError   HandlerList
 	Retry            HandlerList
 	AfterRetry       HandlerList
+	Complete         HandlerList
 }
 
 // Copy returns of this handler's lists.
@@ -33,6 +34,7 @@ func (h *Handlers) Copy() Handlers {
 		UnmarshalMeta:    h.UnmarshalMeta.copy(),
 		Retry:            h.Retry.copy(),
 		AfterRetry:       h.AfterRetry.copy(),
+		Complete:         h.Complete.copy(),
 	}
 }
 
@@ -48,6 +50,7 @@ func (h *Handlers) Clear() {
 	h.ValidateResponse.Clear()
 	h.Retry.Clear()
 	h.AfterRetry.Clear()
+	h.Complete.Clear()
 }
 
 // A HandlerListRunItem represents an entry in the HandlerList which
@@ -85,13 +88,17 @@ func (l *HandlerList) copy() HandlerList {
 	n := HandlerList{
 		AfterEachFn: l.AfterEachFn,
 	}
-	n.list = append([]NamedHandler{}, l.list...)
+	if len(l.list) == 0 {
+		return n
+	}
+
+	n.list = append(make([]NamedHandler, 0, len(l.list)), l.list...)
 	return n
 }
 
 // Clear clears the handler list.
 func (l *HandlerList) Clear() {
-	l.list = []NamedHandler{}
+	l.list = l.list[0:0]
 }
 
 // Len returns the number of handlers in the list.
@@ -101,33 +108,54 @@ func (l *HandlerList) Len() int {
 
 // PushBack pushes handler f to the back of the handler list.
 func (l *HandlerList) PushBack(f func(*Request)) {
-	l.list = append(l.list, NamedHandler{"__anonymous", f})
-}
-
-// PushFront pushes handler f to the front of the handler list.
-func (l *HandlerList) PushFront(f func(*Request)) {
-	l.list = append([]NamedHandler{{"__anonymous", f}}, l.list...)
+	l.PushBackNamed(NamedHandler{"__anonymous", f})
 }
 
 // PushBackNamed pushes named handler f to the back of the handler list.
 func (l *HandlerList) PushBackNamed(n NamedHandler) {
+	if cap(l.list) == 0 {
+		l.list = make([]NamedHandler, 0, 5)
+	}
 	l.list = append(l.list, n)
 }
 
+// PushFront pushes handler f to the front of the handler list.
+func (l *HandlerList) PushFront(f func(*Request)) {
+	l.PushFrontNamed(NamedHandler{"__anonymous", f})
+}
+
 // PushFrontNamed pushes named handler f to the front of the handler list.
 func (l *HandlerList) PushFrontNamed(n NamedHandler) {
-	l.list = append([]NamedHandler{n}, l.list...)
+	if cap(l.list) == len(l.list) {
+		// Allocating new list required
+		l.list = append([]NamedHandler{n}, l.list...)
+	} else {
+		// Enough room to prepend into list.
+		l.list = append(l.list, NamedHandler{})
+		copy(l.list[1:], l.list)
+		l.list[0] = n
+	}
 }
 
 // Remove removes a NamedHandler n
 func (l *HandlerList) Remove(n NamedHandler) {
-	newlist := []NamedHandler{}
-	for _, m := range l.list {
-		if m.Name != n.Name {
-			newlist = append(newlist, m)
+	l.RemoveByName(n.Name)
+}
+
+// RemoveByName removes a NamedHandler by name.
+func (l *HandlerList) RemoveByName(name string) {
+	for i := 0; i < len(l.list); i++ {
+		m := l.list[i]
+		if m.Name == name {
+			// Shift array preventing creating new arrays
+			copy(l.list[i:], l.list[i+1:])
+			l.list[len(l.list)-1] = NamedHandler{}
+			l.list = l.list[:len(l.list)-1]
+
+			// decrement list so next check to length is correct
+			i--
 		}
 	}
-	l.list = newlist
 }
 
 // Run executes all handlers in the list with a given request object.
@@ -163,6 +191,16 @@ func HandlerListStopOnError(item HandlerListRunItem) bool {
 	return item.Request.Error == nil
 }
 
+// WithAppendUserAgent will add a string to the user agent prefixed with a
+// single white space.
+func WithAppendUserAgent(s string) Option {
+	return func(r *Request) {
+		r.Handlers.Build.PushBack(func(r2 *Request) {
+			AddToUserAgent(r, s)
+		})
+	}
+}
+
 // MakeAddToUserAgentHandler will add the name/version pair to the User-Agent request
 // header. If the extra parameters are provided they will be added as metadata to the
 // name/version pair resulting in the following format.