private async Task ProcessStateAsync(Domain.Entities.Cluster cluster, k8s.Models.V1NodeList clusterNodes)
{
try
{
foreach (var clusterNode in clusterNodes.Items)
{
if (clusterNode.Metadata.Name.Contains("master"))
{
cluster.State = clusterNode.Status.Conditions.FirstOrDefault(c => c.Reason == "KubeletReady")?.Type;
var _ = await clusterRepository.UpdateClusterAsync(cluster);
}
else
{
var node = cluster.Nodes.FirstOrDefault(n => n.Name == clusterNode.Metadata.Name);
if (node != null)
{
node.State = clusterNode.Status.Conditions.FirstOrDefault(c => c.Reason == "KubeletReady")?.Type;
var __ = await clusterNodeRepository.UpdateClusterNodeAsync(node);
}
}
}
}
catch (Exception e)
{
logger.LogError(e, "Error on processing state");
}
}
private async Task ProcessMetricsAsync(Domain.Entities.Cluster cluster, Kubernetes client)
{
try
{
var metrics = await client.GetKubernetesNodesMetricsAsync();
var metricsGathered = new List <Metric>();
foreach (var metric in metrics.Items)
{
var node = cluster.Nodes.FirstOrDefault(n => n.Name == metric.Metadata.Name);
var extractItemId = new Guid();
if (node != null)
{
extractItemId = node.Id;
}
else if (metric.Metadata.Name.Contains("master"))
{
extractItemId = cluster.Id;
}
if (extractItemId != Guid.Empty)
{
metricsGathered.Add(new Metric()
{
EntityId = extractItemId,
CpuValue = long.Parse(metric.Usage["cpu"].CanonicalizeString().Replace("n", "")),
MemoryValue = long.Parse(metric.Usage["memory"].CanonicalizeString().Replace("Ki", ""))
});
}
}
await metricRepository.InsertMetricsWithStrategyAsync(metricsGathered.ToArray());
}
catch (Exception e)
{
logger.LogError(e, "Error on processing state");
}
}
private async Task MonitorClusterAsync(Domain.Entities.Cluster cluster)
{
try
{
var filePath = $"./configs/{cluster.Id}/kubeconfig";
if (!File.Exists(filePath))
{
await File.WriteAllTextAsync(filePath, cluster.KubeConfig);
}
var config = KubernetesClientConfiguration.BuildConfigFromConfigFile(filePath);
var client = new Kubernetes(config);
var clusterNodes = await client.ListNodeAsync();
await ProcessStateAsync(cluster, clusterNodes);
await ProcessMetricsAsync(cluster, client);
}
catch (Exception e)
{
logger.LogError(e, "Fail to connect client.");
}
}