public void SaveNodes(VmxHaPair record)
{
// serialize and convert to byte array
string json = JsonConvert.SerializeObject(record);
byte[] bytes = Encoding.ASCII.GetBytes(json);
Stream source = new MemoryStream(bytes);
var containerClient = _blobServiceClient.GetBlobContainerClient(_containername);
var blobClient = containerClient.GetBlobClient(_blobname);
blobClient.Upload(source, true);
}
public VmxHaPair GetNodes()
{
// download blob
var containerClient = _blobServiceClient.GetBlobContainerClient(_containername);
var blobClient = containerClient.GetBlobClient(_blobname);
Stream target = new MemoryStream();
blobClient.DownloadTo(target);
target.Position = 0;
StreamReader reader = new StreamReader(target);
string text = reader.ReadToEnd();
// deserialize into VmxHaPair
VmxHaPair record = JsonConvert.DeserializeObject <VmxHaPair>(text);
return(record);
}
public MerakiProbeResult Failover(int maxLossPercent)
{
// Get HA Pair from blob storage
var hapair = _blob.GetNodes();
// probe active node
var probe = _probe.GetLossLatency(hapair.activeNode.networkId, hapair.activeNode.deviceSerial);
var logentry = new MerakiProbeResult()
{
latencyMs = probe.latencyMs,
lossPercent = probe.lossPercent,
ActiveVmName = hapair.activeNode.vmName,
Failover = false
};
if (probe.lossPercent > maxLossPercent)
{
// failover updating all route tables
foreach (RouteInfo route in _routes)
{
_router.UpdateRoute(route.ResourceGroup, route.RouteTableName, route.RouteName, hapair.standByNode.privateIp);
}
var newhapair = new VmxHaPair()
{
activeNode = hapair.standByNode,
standByNode = hapair.activeNode
};
_blob.SaveNodes(newhapair);
logentry.Failover = true;
logentry.Message = probe.ErrorMessage;
}
var json = JsonConvert.SerializeObject(logentry);
_log.Log(LogName, json);
return(logentry);
}
