plc连接状态存储按设备存储

zhangqian

2023-11-27 89e641d91e5e7bb3e77db7e066e32db68139868e

plc连接状态存储按设备存储

 service/plc.go

@@ -15,7 +15,6 @@
    "fmt"
    "github.com/spf13/cast"
    "sync"
    "sync/atomic"
)

// 串口不支持并行读写，所以需要加个锁，防止timeout和资源不可用报错
@@ -211,32 +210,39 @@
    }
}

var connectionStatus atomic.Bool

var failureRemainingOpportunities atomic.Int64
var connectionStatus sync.Map

const (
    defaultFailureRemainingOpportunities = 20
)

func IsConnect() bool {
    return connectionStatus.Load()
    val, ok := connectionStatus.Load(conf.Conf.CurrentDeviceID)
    if !ok {
        return false
    }
    failureRemainingOpportunities := val.(int)
    return failureRemainingOpportunities > 0
}

func FailureRemainingOpportunitiesDecr() {
    newValue := failureRemainingOpportunities.Add(-1)
    if newValue <= 0 {
        connectionStatus.Store(false)
    val, ok := connectionStatus.Load(conf.Conf.CurrentDeviceID)
    if !ok {
        return
    }
    failureRemainingOpportunities := val.(int)
    if failureRemainingOpportunities > 0 {
        failureRemainingOpportunities--
    }
    connectionStatus.Store(conf.Conf.CurrentDeviceID, failureRemainingOpportunities)
    return
}

func FailureRemainingOpportunitiesReset() {
    if failureRemainingOpportunities.Load() < defaultFailureRemainingOpportunities {
        failureRemainingOpportunities.Store(defaultFailureRemainingOpportunities)
    }
    if connectionStatus.Load() == false {
        connectionStatus.Store(true)
    val, ok := connectionStatus.Load(conf.Conf.CurrentDeviceID)
    if !ok || val.(int) < defaultFailureRemainingOpportunities {
        connectionStatus.Store(conf.Conf.CurrentDeviceID, defaultFailureRemainingOpportunities)
        return
    }
    return
}