/// <summary>Parse xml and instantiate the nested rule</summary>
/// <exception cref="Org.Apache.Hadoop.Yarn.Server.Resourcemanager.Scheduler.Fair.AllocationConfigurationException
/// "/>
public override void InitializeFromXml(Element el)
{
NodeList elements = el.GetChildNodes();
for (int i = 0; i < elements.GetLength(); i++)
{
Node node = elements.Item(i);
if (node is Element)
{
Element element = (Element)node;
if ("rule".Equals(element.GetTagName()))
{
QueuePlacementRule rule = QueuePlacementPolicy.CreateAndInitializeRule(node);
if (rule == null)
{
throw new AllocationConfigurationException("Unable to create nested rule in nestedUserQueue rule"
);
}
this.nestedRule = rule;
break;
}
else
{
continue;
}
}
}
if (this.nestedRule == null)
{
throw new AllocationConfigurationException("No nested rule specified in <nestedUserQueue> rule"
);
}
base.InitializeFromXml(el);
}
FromXml(Element el, IDictionary <FSQueueType, ICollection <string> > configuredQueues
, Configuration conf)
{
IList <QueuePlacementRule> rules = new AList <QueuePlacementRule>();
NodeList elements = el.GetChildNodes();
for (int i = 0; i < elements.GetLength(); i++)
{
Node node = elements.Item(i);
if (node is Element)
{
QueuePlacementRule rule = CreateAndInitializeRule(node);
rules.AddItem(rule);
}
}
return(new Org.Apache.Hadoop.Yarn.Server.Resourcemanager.Scheduler.Fair.QueuePlacementPolicy
(rules, configuredQueues, conf));
}
/// <summary>Create and initialize a rule given a xml node</summary>
/// <param name="node"/>
/// <returns>QueuePlacementPolicy</returns>
/// <exception cref="AllocationConfigurationException"/>
/// <exception cref="Org.Apache.Hadoop.Yarn.Server.Resourcemanager.Scheduler.Fair.AllocationConfigurationException
/// "/>
public static QueuePlacementRule CreateAndInitializeRule(Node node)
{
Element element = (Element)node;
string ruleName = element.GetAttribute("name");
if (string.Empty.Equals(ruleName))
{
throw new AllocationConfigurationException("No name provided for a " + "rule element"
);
}
Type clazz = ruleClasses[ruleName];
if (clazz == null)
{
throw new AllocationConfigurationException("No rule class found for " + ruleName);
}
QueuePlacementRule rule = ReflectionUtils.NewInstance(clazz, null);
rule.InitializeFromXml(element);
return(rule);
}
