Moved to google.golang.org/genproto/googleapis/api/annotations

Fixes #52

vendor/github.com/go-kit/kit/examples/stringsvc3/service.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"errors"
+	"strings"
+)
+
+// StringService provides operations on strings.
+type StringService interface {
+	Uppercase(string) (string, error)
+	Count(string) int
+}
+
+type stringService struct{}
+
+func (stringService) Uppercase(s string) (string, error) {
+	if s == "" {
+		return "", ErrEmpty
+	}
+	return strings.ToUpper(s), nil
+}
+
+func (stringService) Count(s string) int {
+	return len(s)
+}
+
+// ErrEmpty is returned when an input string is empty.
+var ErrEmpty = errors.New("empty string")
+
+// ServiceMiddleware is a chainable behavior modifier for StringService.
+type ServiceMiddleware func(StringService) StringService