From 8dfb8feb32bb5e4e460e23dcde42612a26fa2bcb Mon Sep 17 00:00:00 2001
From: zhangqian <zhangqian@123.com>
Date: 星期日, 27 八月 2023 01:11:28 +0800
Subject: [PATCH] fix
---
service/plc.go | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 50 insertions(+), 8 deletions(-)
diff --git a/service/plc.go b/service/plc.go
index 1cef995..d5b8126 100644
--- a/service/plc.go
+++ b/service/plc.go
@@ -8,6 +8,7 @@
"encoding/binary"
"errors"
"fmt"
+ "sync"
)
func PlcRead(plcConfig *model.DevicePlc, fieldType constvar.PlcStartAddressType) (val interface{}, err error) {
@@ -27,23 +28,27 @@
}
ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
- conn, err := plc.NewModbusConnection(ipAddr)
+ conn, err := plc.GetModbusConnection(ipAddr)
if err != nil {
- logx.Errorf("GetProductProgress 杩炴帴plc澶辫触: %v", err.Error())
+ logx.Errorf("PlcRead 杩炴帴plc澶辫触: %v", err.Error())
return
}
- defer conn.Close()
rawData, err := plc.ReadHoldingRegister(conn, startAddress, dataLength)
if err != nil {
- logx.Errorf("GetProductProgress 鑾峰彇plc鏁版嵁澶辫触: %v", err.Error())
+ logx.Errorf("PlcRead 鑾峰彇plc鏁版嵁澶辫触: %v", err.Error())
return
}
switch valueType {
case constvar.PlcStartAddressValueTypeString:
return string(rawData), nil
case constvar.PlcStartAddressValueTypeInt:
- return int(binary.BigEndian.Uint16(rawData)), nil
+ if len(rawData) == 2 {
+ return int(binary.BigEndian.Uint16(rawData)), nil
+ } else {
+ logx.Errorf("plc read get an unknown int value: %v, address:%v", rawData, startAddress)
+ return nil, errors.New(fmt.Sprintf("unknown int value锛�%v", rawData))
+ }
}
return nil, errors.New("undefined value type")
}
@@ -61,12 +66,11 @@
}
ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
- conn, err := plc.NewModbusConnection(ipAddr)
+ conn, err := plc.GetModbusConnection(ipAddr)
if err != nil {
- logx.Errorf("GetProductProgress 杩炴帴plc澶辫触: %v", err.Error())
+ logx.Errorf("PlcWrite 杩炴帴plc澶辫触: %v", err.Error())
return
}
- defer conn.Close()
result, err := plc.WriteHoldingRegister(conn, startAddress, value)
if err != nil {
@@ -76,3 +80,41 @@
logx.Infof("plc write ok, address: %v, value: %v, result: %v", startAddress, value, result)
return
}
+
+type CacheStore struct {
+ cache map[string]interface{}
+ mu sync.Mutex
+}
+
+var defaultCacheStore *CacheStore
+
+func init() {
+ defaultCacheStore = newCacheManager()
+}
+func newCacheManager() *CacheStore {
+ return &CacheStore{
+ cache: make(map[string]interface{}),
+ }
+}
+
+func (cm *CacheStore) Get(key string) (interface{}, bool) {
+ cm.mu.Lock()
+ defer cm.mu.Unlock()
+
+ conn, ok := cm.cache[key]
+ return conn, ok
+}
+
+func (cm *CacheStore) Add(key string, value interface{}) {
+ cm.mu.Lock()
+ defer cm.mu.Unlock()
+ cm.cache[key] = value
+}
+
+func PlcCacheGet(key string) (interface{}, bool) {
+ return defaultCacheStore.Get(key)
+}
+
+func PlcCacheSet(key string, value interface{}) {
+ defaultCacheStore.Add(key, value)
+}
--
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