use last record values when comming request contain null param values

ews/ews.go

@@ -210,6 +210,32 @@ func (e *EWS) SetUutInfo(cfg cnf.Cfg, logger *log.Logger, host string, addr stri
 		return rst
 	}
 
+	//如果部分客户端参数为空, 则保留uutinfo表中已存在记录的值
+	mac := params["MAC"]
+	if mac == "" {
+		mac = ui.MAC
+	}
+	pn := params["PARTNO"]
+	if pn == "" {
+		pn = ui.PartNO
+	}
+	mo := params["MO"]
+	if mo == "" {
+		mo = ui.MfgMO
+	}
+	sku := params["SKU"]
+	if sku == "" {
+		sku = ui.MfgSKU
+	}
+	line := params["LINE"]
+	if line == "" {
+		line = ui.MfgLine
+	}
+	stage := params["STAGE"]
+	if stage == "" {
+		stage = ui.MfgStage
+	}
+
 	//如果此USN的记录存在于uutinfo表中, 且此USN的Relay/MAC/Item/Status/Message已变化, 则:
 	//1. 备份此USN对应记录行到uutinfobkup表
 	//2. 删除uutinfo表中对应USN的记录行
@@ -262,8 +288,8 @@ func (e *EWS) SetUutInfo(cfg cnf.Cfg, logger *log.Logger, host string, addr stri
 		_, err = stmt.Exec(
 			ui.USN,
 			ui.MAC,
-			addr,
+			ui.IPAddr,
-			host,
+			ui.Relay,
 			ui.Item,
 			ui.Status,
 			ui.Message,
@@ -302,11 +328,6 @@ func (e *EWS) SetUutInfo(cfg cnf.Cfg, logger *log.Logger, host string, addr stri
 			return rst
 		}
 
-		mac := params["MAC"]
-		if mac == "" {
-			mac = ui.MAC
-		}
-
 		stmt, err = tx.Prepare("INSERT INTO uutinfo (usn,mac,ipaddr,relay,item,status,message,partno,mo,sku,line,stage,first_ack,last_ack,last_change) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,NOW(),NOW());")
 		if err != nil {
 			tx.Rollback()
@@ -323,11 +344,11 @@ func (e *EWS) SetUutInfo(cfg cnf.Cfg, logger *log.Logger, host string, addr stri
 			params["ITEM"],
 			params["STATUS"],
 			params["MESSAGE"],
-			params["PARTNO"],
+			pn,
-			params["MO"],
+			mo,
-			params["SKU"],
+			sku,
-			params["LINE"],
+			line,
-			params["STAGE"],
+			stage,
 			ui.FirstAck,
 		)
 		if err != nil {
@@ -400,15 +421,15 @@ func (e *EWS) SetUutInfo(cfg cnf.Cfg, logger *log.Logger, host string, addr stri
 	}
 	_, err = stmt.Exec(
 		ui.USN,
-		ui.MAC,
+		mac,
 		addr,
 		host,
 		ui.Item,
 		ui.Status,
 		ui.Message,
-		ui.PartNO,
+		pn,
-		ui.MfgMO,
+		mo,
-		ui.MfgSKU,
+		sku,
 		params["LINE"],
 		params["STAGE"],
 		ui.FirstAck,