/// <summary>
/// Builds an ICounter instance from a counter XML node and a set of properties.
/// </summary>
private static ICounter BuildCounterFromCounterNode(XmlNode counterNode, IMBeanClient mbeanClient, Host host, string sourceName, int startPort)
{
var counterName = counterNode.Attributes["name"].Value;
var categoryName = counterNode.ParentNode.Attributes["name"].Value;
var path = counterNode.ParentNode.Attributes["path"].Value;
string unitOfMeasurement = null;
if (counterNode.Attributes.GetNamedItem("unit") != null)
{
unitOfMeasurement = counterNode.Attributes["unit"].Value;
}
var instanceName = BuildInstanceName(sourceName, startPort, mbeanClient.Connector.ConnectionInfo.Port);
var rootCounterTypeNode = counterNode.ParentNode.ParentNode;
var counterType = rootCounterTypeNode.Name.ToLower();
string subDomain = null;
if (rootCounterTypeNode.Attributes != null && rootCounterTypeNode.Attributes["subdomain"] != null)
{
subDomain = rootCounterTypeNode.Attributes["subdomain"].Value;
}
// Create the counter.
try
{
var builder = new MBeanBuilder();
return builder.CreateCounter(host)
.UsingClient(mbeanClient)
.WithSourceName(sourceName)
.WithSubDomain(subDomain)
.WithPath(path)
.WithCategoryName(categoryName)
.WithCounterName(counterName)
.WithInstanceName(instanceName)
.WithUnit(unitOfMeasurement)
.Build(counterType);
}
catch (Exception ex)
{
Log.DebugFormat(@"Failed to register MBean counter {0}\{1}\{2}\{3}\{4}: {5}",
host.Name, sourceName, categoryName, counterName, instanceName, ex.Message);
return null;
}
}
/// <summary>
/// Parses & loads a set of MBean counters for the given host using the XML tree.
/// </summary>
/// <param name="root">The root MBean counters config node.</param>
/// <param name="host">The host to load counters for.</param>
/// <returns>Collection of MBean counters specified in the root node's config.</returns>
public ICollection<ICounter> LoadCounters(XmlNode root, Host host)
{
var counters = new Collection<ICounter>();
var sourceNodes = root.SelectNodes("./Source");
foreach (XmlNode sourceNode in sourceNodes)
{
var sourceName = sourceNode.Attributes["name"].Value;
var startPort = Convert.ToInt32(sourceNode.Attributes["startport"].Value);
var endPort = Convert.ToInt32(sourceNode.Attributes["endport"].Value);
// Validate port range.
if (startPort > endPort || startPort <= 0 || startPort > 65535 || endPort <= 0 || endPort > 65535)
{
throw new ArgumentException("Invalid port range");
}
// Retrieve a collection of all available clients within the specified port range, then new up counters using those.
// This way, multiple counters can share a single client & connection.
var mbeanClientPool = MBeanClientFactory.CreateClients(host.Name, startPort, endPort);
foreach (var mbeanClient in mbeanClientPool)
{
var counterNodesForSource = sourceNode.SelectNodes(".//Counter");
foreach (XmlNode counterNode in counterNodesForSource)
{
var counterName = counterNode.Attributes["name"].Value;
var categoryName = counterNode.ParentNode.Attributes["name"].Value;
var path = counterNode.ParentNode.Attributes["path"].Value;
string unitOfMeasurement = null;
if (counterNode.Attributes.GetNamedItem("unit") != null)
{
unitOfMeasurement = counterNode.Attributes["unit"].Value;
}
var instanceName = sourceName;
// Massage the instance name to match what Perfmon does (i.e. a machine with two dataserver processes will have
// instance names "dataserver" & "dataserver#1".
var processIndex = mbeanClient.Connector.ConnectionInfo.Port - startPort;
if (processIndex > 0)
{
instanceName += "#" + processIndex;
}
// Create the counter.
var counterType = counterNode.ParentNode.ParentNode.Name.ToLower();
try
{
var builder = new MBeanBuilder();
var counter = builder.CreateCounter(host)
.UsingClient(mbeanClient)
.WithSourceName(sourceName)
.WithPath(path)
.WithCategoryName(categoryName)
.WithCounterName(counterName)
.WithInstanceName(instanceName)
.WithUnit(unitOfMeasurement)
.Build(counterType);
counters.Add(counter);
}
catch (Exception ex)
{
Log.Debug(String.Format("Failed to register MBean counter {0}\\{1}\\{2}\\{3}\\{4}: {5}",
host.Name, sourceName, categoryName, counterName, instanceName, ex.Message));
}
}
}
}
return counters;
}
