public bool TryGetInfo(out DeviceCacheInfo info)
{
EnsureLockOwner();
info = this.cacheStore.GetObject <DeviceCacheInfo>(this.cacheKey);
return(info != null);
}
public bool Initialize(uint fCntUp = 0, uint fCntDown = 0)
{
// it is the first message from this device
var serverStateForDeviceInfo = new DeviceCacheInfo
{
FCntDown = fCntDown,
FCntUp = fCntUp,
GatewayId = this.gatewayId
};
return(this.StoreInfo(serverStateForDeviceInfo, true));
}
public bool TryGetInfo(out DeviceCacheInfo info)
{
info = null;
this.EnsureLockOwner();
string cachedFCnt = this.cacheStore.StringGet(this.cacheKey);
if (string.IsNullOrEmpty(cachedFCnt))
{
return(false);
}
info = JsonConvert.DeserializeObject <DeviceCacheInfo>(cachedFCnt);
return(info != null);
}
internal static uint ProcessExistingDeviceInfo(LoRaDeviceCache deviceCache, DeviceCacheInfo cachedDeviceState, string gatewayId, uint clientFCntUp, uint clientFCntDown)
{
uint newFCntDown = 0;
if (cachedDeviceState != null)
{
// we have a state in the cache matching this device and now we own the lock
if (clientFCntUp > cachedDeviceState.FCntUp)
{
// it is a new message coming up by the first gateway
if (clientFCntDown >= cachedDeviceState.FCntDown)
{
newFCntDown = clientFCntDown + 1;
}
else
{
newFCntDown = cachedDeviceState.FCntDown + 1;
}
cachedDeviceState.FCntUp = clientFCntUp;
cachedDeviceState.FCntDown = newFCntDown;
cachedDeviceState.GatewayId = gatewayId;
deviceCache.StoreInfo(cachedDeviceState);
}
else if (clientFCntUp == cachedDeviceState.FCntUp && gatewayId == cachedDeviceState.GatewayId)
{
// it is a retry message coming up by the same first gateway
newFCntDown = cachedDeviceState.FCntDown + 1;
cachedDeviceState.FCntDown = newFCntDown;
deviceCache.StoreInfo(cachedDeviceState);
}
}
return(newFCntDown);
}
public bool StoreInfo(DeviceCacheInfo info, bool initialize = false)
{
this.EnsureLockOwner();
return(this.cacheStore.StringSet(this.cacheKey, JsonConvert.SerializeObject(info), new TimeSpan(1, 0, 0, 0), initialize));
}
public void StoreInfo(DeviceCacheInfo info)
{
this.EnsureLockOwner();
this.cacheStore.StringSet(this.cacheKey, JsonConvert.SerializeObject(info), new TimeSpan(30, 0, 0, 0));
}