/// <summary>
/// Get the info of specified broker node
/// </summary>
/// <param name="brokerNodes">List of broker nodes</param>
/// <param name="brokerNodeName">Name of the broker node</param>
/// <returns>Broker node info</returns>
private static BrokerNodeItem GetBrokerNode(List <BrokerNodeItem> brokerNodes, string brokerNodeName)
{
BrokerNodeItem result = null;
foreach (BrokerNodeItem brokerNodeItem in brokerNodes)
{
if (0 == String.Compare(brokerNodeItem.Name, brokerNodeName, StringComparison.InvariantCultureIgnoreCase))
{
result = brokerNodeItem;
break;
}
}
return(result);
}
/// <summary>
/// update the available broker EPRs.
/// </summary>
private void UpdateAvaliableBrokers(
List <BrokerNodeItem> brokerNodesInCluster,
List <string> brokerNodesWithFailover,
Dictionary <string, ResourceGroupInfo> resourceGroups)
{
List <NodeInfo> onlineNonHABrokers = new List <NodeInfo>();
List <NodeInfo> onlineHABrokers = new List <NodeInfo>();
List <NodeInfo> offlineBrokers = new List <NodeInfo>();
String brokerListInfoMessage = String.Empty;
#if HPCPACK
// Loop through the broker nodes
foreach (BrokerNodeItem brokerNode in brokerNodesInCluster)
{
// Add those that are reachable, online and not failover BNs to the NonHA BN list
if (brokerNode != null && brokerNode.Reachable)
{
if (!brokerNodesWithFailover.Contains(brokerNode.Name))
{
if (brokerNode.State == NodeState.Online)
{
onlineNonHABrokers.Add(GenerateNodeInfo(brokerNode.Name, brokerNode.DomainName));
}
else
{
// Note: We need to authenticate offline broker node also to
// enable SoaDiagSvc on offline broker nodes.
offlineBrokers.Add(GenerateNodeInfo(brokerNode.Name, brokerNode.DomainName));
}
}
}
}
#endif
// Loop through the broker launcher resource groups hosted on failover BNs
foreach (ResourceGroupInfo resourceGroupInfo in resourceGroups.Values)
{
BrokerNodeItem hostBrokerNode = GetBrokerNode(brokerNodesInCluster, resourceGroupInfo.HostName);
// It is possible for a resource group's BN to be removed from the compute cluster but not yet
// removed from its failover cluster. If this occurs, move on to next resourceGroup
if (hostBrokerNode == null)
{
continue;
}
// If the resource group is available and its host is available and online, add its network name to the HA BN EPRs
if (resourceGroupInfo.Available && hostBrokerNode.Reachable)
{
// Note: Resource group's NetworkName is not FQDN. The broker node is
// in the same domain as the HA broker resource group.
// http://technet.microsoft.com/en-us/library/cc771404.aspx#BKMK_Account_Infrastructure
// All servers in the cluster must be in the same Active Directory domain.
if (hostBrokerNode.State == NodeState.Online)
{
onlineHABrokers.Add(GenerateNodeInfo(resourceGroupInfo.NetworkName, hostBrokerNode.DomainName));
}
else
{
// Note: We need to authenticate offline broker node also to
// enable SoaDiagSvc on offline broker nodes.
offlineBrokers.Add(GenerateNodeInfo(resourceGroupInfo.NetworkName, hostBrokerNode.DomainName));
}
}
}
StringBuilder sbHA = new StringBuilder();
StringBuilder sbNonHA = new StringBuilder();
StringBuilder sbOffline = new StringBuilder();
lock (this.availableBrokers)
{
this.availableBrokers.Clear();
for (int i = 0; i < onlineHABrokers.Count; i++)
{
sbHA.AppendLine(onlineHABrokers[i].Name);
this.availableBrokers.Add(onlineHABrokers[i].Name);
}
for (int i = 0; i < onlineNonHABrokers.Count; i++)
{
sbNonHA.AppendLine(onlineNonHABrokers[i].Name);
this.availableBrokers.Add(onlineNonHABrokers[i].Name);
}
foreach (NodeInfo info in offlineBrokers)
{
sbOffline.AppendLine(info.Name);
this.availableBrokers.Add(info.Name);
}
this.availableBrokers.Sort(StringComparer.InvariantCultureIgnoreCase);
// Update HpcSession performance counter - ActiveBrokerNodeCount
if (this.activeBrokerNodeCount != null)
{
this.activeBrokerNodeCount.RawValue = this.availableBrokers.Count - offlineBrokers.Count;
}
}
brokerListInfoMessage = String.Format(
"Available broker node eprs: HA - {0}, NonHA - {1}, OffLine - {2}",
sbHA.ToString(),
sbNonHA.ToString(),
sbOffline.ToString());
// Inform admin of broker node list if it changed
if (0 != String.Compare(this.lastBrokerListInfoMessage, brokerListInfoMessage, StringComparison.InvariantCultureIgnoreCase))
{
TraceHelper.TraceEvent(TraceEventType.Verbose, brokerListInfoMessage);
this.lastBrokerListInfoMessage = brokerListInfoMessage;
}
// Save the updated EPR lists
lock (this.brokerEPRsLock)
{
this.availableHABrokerNodes = onlineHABrokers;
this.availableNonHABrokerNodes = onlineNonHABrokers;
}
}