rework extensions

add log extension
implement client unsubscribe

extensions/debug.go

@@ -0,0 +1,31 @@
+package extensions
+
+import (
+	"encoding/json"
+	"github.com/thesyncim/faye/message"
+	"io"
+	"log"
+)
+
+func debugJson(v interface{}) string {
+	b, _ := json.MarshalIndent(v, "", " ")
+	return string(b)
+}
+
+type DebugExtension struct {
+	in  *log.Logger
+	out *log.Logger
+}
+
+func NewDebugExtension(out io.Writer) *DebugExtension {
+	li := log.New(out, "InMsg", 0)
+	lo := log.New(out, "outMsg", 0)
+	return &DebugExtension{in: li, out: lo}
+}
+
+func (d *DebugExtension) InExtension(m *message.Message) {
+	d.in.Println(debugJson(m))
+}
+func (d *DebugExtension) OutExtension(m *message.Message) {
+	d.out.Println(debugJson(m))
+}