/// <summary>
/// Removes Job Processor workers which are IDLE for a while
/// </summary>
private IEnumerable <JobHostEntity> RemoveIdleInstancesAsNeeded(IEnumerable <JobHostEntity> overIdleJobHosts, int idleCount)
{
// does the policy state a minumum number of idle workers?
overIdleJobHosts = (idleCount > _policy.MaximumIdleJobHosts) ? overIdleJobHosts.Take(idleCount - _policy.MaximumIdleJobHosts) : overIdleJobHosts.Take(0);
string[] roleInstances = overIdleJobHosts.Select(jhe => jhe.RoleInstanceId).ToArray <string>();
if (overIdleJobHosts.Count() > 0)
{
string requestId = string.Empty;
if (RoleEnvironment.IsEmulated == false)
{
requestId = ManagementApiHelper.RemoveJobHostInstances(roleInstances);
}
if (!string.IsNullOrEmpty(requestId))
{
UpdateRoleOperationStatus(requestId);
// mark the jobHosts as deleting
foreach (var jhe in overIdleJobHosts)
{
jhe.Status = JobHostStatus.Deleting;
_jobHostRepository.UpdateJobHost(jhe);
}
}
}
return(overIdleJobHosts);
}
