dt1t and counter and refactoring using embedded interfaces

src/udi/handlers/handler/handler.go

@@ -1,6 +1,10 @@
 package handler
 
-import "time"
+import (
+  "time"
+  "log"
+  "udi/counter"
+)
 
 type MessageT struct {
   Timestamp time.Time
@@ -11,5 +15,32 @@ type MessageT struct {
 type Handler interface {
   GetId() string
   Handle(MessageT)
+  Lost(msg string, err error, message MessageT)
+  S()
+  F()
+}
+
+type CommonHandler struct {
+  Id string
+}
+
+func (self *CommonHandler) S() {
+  counter.SH(self.Id)
+}
+func (self *CommonHandler) F() {
+  counter.FH(self.Id)
+}
+
+func (self *CommonHandler) GetId() string {
+  return self.Id
+}
+
+func (self *CommonHandler) Lost(msg string, err error, message MessageT) {
+  if err != nil {
+    log.Printf("Error: %s, message %s is lost", msg, message)
+  } else {
+    log.Printf("Error: %s (%s), message %s is lost", msg, err, message)
+  }
+  self.F()
 }