/// <summary>
/// Clean up all the stale workflow runs in the system.
/// </summary>
/// <param name="scheduledItemRef"></param>
public override void Execute(EntityRef scheduledItemRef)
{
var daysToKeepRuns = ConfigurationSettings.GetWorkflowConfigurationSection().Triggers.KeepCompletedRunDays;
DateTime deleteAfter = DateTime.UtcNow.AddDays(-daysToKeepRuns);
var tenant = RequestContext.GetContext().Tenant;
var tenantId = tenant != null ? tenant.Id : 0;
var tenantName = tenant != null ? tenant.Name : "Zero Tenant";
EventLog.Application.WriteInformation("Cleaning workflow runs for tenant '{0}' ({1})", tenantName, tenantId);
RemoveOldWorkflowRuns(deleteAfter);
RemoveOldWorkflowVersions();
RemoveUnreferencedWorkflowTraces();
}
