public LbGetApplicationInstancesResponse GetApplicationInstances(LbGetApplicationInstancesRequest request)
{
try
{
Log.Debug(this, "GetApplicationInstances()");
Authenticate(request);
LbGetApplicationInstancesResponse response = new LbGetApplicationInstancesResponse();
List<ApplicationInstance> instances = Database.GetInstance().RoutingMesh.FindAll(x => x.ApplicationId == request.ApplicationId);
if (instances != null)
{
if (request.NodeId == -1)
response.ApplicationInstances = instances;
else
response.ApplicationInstances = instances.FindAll(x => x.NodeId == request.NodeId);
}
else
response.ApplicationInstances = new List<ApplicationInstance>();
return response;
}
catch (Exception e)
{
Log.Error(this, e);
throw e;
}
}
private void UpdateApplications(List<Node> nodes)
{
foreach (Node node in nodes)
{
try
{
NcDescribeApplicationsRequest request = new NcDescribeApplicationsRequest(Settings.Credentials);
var channel = EndPoints.GetNcApplicationGridService(node);
NcDescribeApplicationsResponse response = channel.DescribeApplications(request);
node.Applications = response.Applications;
foreach(Application application in node.Applications)
{
LbGetApplicationInstancesRequest request1 = new LbGetApplicationInstancesRequest(Settings.Credentials);
request1.NodeId = node.Id;
request1.ApplicationId = application.Id;
LbGetApplicationInstancesResponse response1 = EndPoints.GetLbApplicationGridService().GetApplicationInstances(request1);
application.ApplicationInstances = response1.ApplicationInstances;
}
Log.Debug(this, "Updated applications of node " + node.ToString());
}
catch(Exception e)
{
Log.Error(this, "Could not update applications of node " + node.ToString());
throw e;
}
}
}
private bool ScaleDown(int applicationId, string tenantName, int scale)
{
Log.Info(this, "Scaling down application: " + applicationId);
LbGetApplicationInstancesRequest request_ = new LbGetApplicationInstancesRequest(Settings.Credentials);
request_.NodeId = -1;
request_.ApplicationId = applicationId;
LbGetApplicationInstancesResponse response_ = EndPoints.GetLbApplicationGridService().GetApplicationInstances(request_);
List<ApplicationInstance> list = response_.ApplicationInstances.OrderBy(x => x.Id).ToList();
if ((list != null) && (list.Count >= scale))
{
// Stop idling application instances
List<ApplicationInstance> idlingInstances = list.FindAll(x => x.RequestCount == 0);
// Keep one instance alive
if (idlingInstances.Count == list.Count)
idlingInstances.Remove(idlingInstances.Last());
if (idlingInstances.Count > 0)
{
foreach (ApplicationInstance instance in idlingInstances)
{
ApStopApplicationInstanceRequest request = new ApStopApplicationInstanceRequest(Settings.Credentials);
request.NodeId = instance.NodeId;
request.ApplicationId = instance.ApplicationId;
request.InstanceId = instance.Id;
GetApDashboardService().StopApplicationInstance(request);
}
return true;
}
}
return false;
}
