Make the debug handler an actual thing that can be set by users

server/options.go

@@ -4,6 +4,7 @@ import (
 	"github.com/micro/go-micro/broker"
 	"github.com/micro/go-micro/codec"
 	"github.com/micro/go-micro/registry"
+	"github.com/micro/go-micro/server/debug"
 	"github.com/micro/go-micro/transport"
 
 	"golang.org/x/net/context"
@@ -23,6 +24,9 @@ type Options struct {
 	HdlrWrappers []HandlerWrapper
 	SubWrappers  []SubscriberWrapper
 
+	// Debug Handler which can be set by a user
+	DebugHandler debug.DebugHandler
+
 	// Other options for implementations of the interface
 	// can be stored in a context
 	Context context.Context
@@ -50,6 +54,10 @@ func newOptions(opt ...Option) Options {
 		opts.Transport = transport.DefaultTransport
 	}
 
+	if opts.DebugHandler == nil {
+		opts.DebugHandler = debug.DefaultDebugHandler
+	}
+
 	if len(opts.Address) == 0 {
 		opts.Address = DefaultAddress
 	}
@@ -132,6 +140,13 @@ func Transport(t transport.Transport) Option {
 	}
 }
 
+// DebugHandler for this server
+func DebugHandler(d debug.DebugHandler) Option {
+	return func(o *Options) {
+		o.DebugHandler = d
+	}
+}
+
 // Metadata associated with the server
 func Metadata(md map[string]string) Option {
 	return func(o *Options) {