/// <summary>
/// Combines the collected statistics of the nodes, in a replicated environment.
/// </summary>
/// <returns></returns>
public static CacheStatistics CombineReplicatedStatistics(ClusterCacheStatistics s)
{
CacheStatistics stats = new CacheStatistics();
if (s.Nodes == null)
{
return(stats);
}
for (int i = 0; i < s.Nodes.Count; i++)
{
NodeInfo info = s.Nodes[i] as NodeInfo;
if (info == null || info.Statistics == null)
{
continue;
}
stats.HitCount += info.Statistics.HitCount;
stats.MissCount += info.Statistics.MissCount;
}
stats.UpdateCount(s.LocalNode.Statistics.Count);
stats.MaxCount = s.LocalNode.Statistics.MaxCount;
stats.MaxSize = s.LocalNode.Statistics.MaxSize;
stats.SessionCount = s.LocalNode.Statistics.SessionCount;
return(stats);
}
internal void ClientDisconnected(string client, DateTime dcTime)
{
if (_stats == null)
{
return;
}
if (_stats is ClusterCacheStatistics && _stats.ClassName != "mirror-server")
{
bool clientExist = false;
ClusterCacheStatistics clusterStats = _stats as ClusterCacheStatistics;
foreach (NodeInfo node in clusterStats.Nodes)
{
if (node.ConnectedClients.Contains(client))
{
clientExist = true;
break;
}
}
if (!clientExist)
{
CreateNewDeadClientFinalizer(client, dcTime);
}
}
else
{
CreateNewDeadClientFinalizer(client, dcTime);
}
}
internal void ClientConnected(string client)
{
if (_deadClients.ContainsKey(client))
{
lock (syncRoot) _deadClients.Remove(client);
}
else if (_suspectedClients.ContainsKey(client))
{
if (_stats is ClusterCacheStatistics)
{
bool clientExist = true;
ClusterCacheStatistics clusterStats = _stats as ClusterCacheStatistics;
foreach (NodeInfo node in clusterStats.Nodes)
{
if (!node.ConnectedClients.Contains(client))
{
clientExist = false;
break;
}
}
if (clientExist)
{
lock (syncRoot) _suspectedClients.Remove(client);
}
}
}
}
internal void ClientDisconnected(string client, DateTime dcTime)
{
if (_stats == null)
{
return;
}
if (_stats is ClusterCacheStatistics && _stats.ClassName != "mirror-server")
{
bool clientExist = false;
ClusterCacheStatistics clusterStats = _stats as ClusterCacheStatistics;
foreach (NodeInfo node in clusterStats.Nodes)
{
if (node.ConnectedClients.Contains(client))
{
clientExist = true;
break;
}
}
lock (syncRoot)
{
if (clientExist)
{
if (_stats.ClassName != "replicated-server")
{
_suspectedClients[client] = dcTime;
}
}
else
{
if (_suspectedClients.ContainsKey(client))
{
_suspectedClients.Remove(client);
}
_deadClients[client] = dcTime;
Monitor.Pulse(syncRoot);
}
}
}
else
{
lock (syncRoot)
{
_deadClients[client] = dcTime;
Monitor.Pulse(syncRoot);
}
}
}
/// <summary>
/// Return the next node in call balacing order that is fully functional.
/// </summary>
/// <returns></returns>
NodeInfo IActivityDistributor.SelectNode(ClusterCacheStatistics clusterStats, object hint)
{
ArrayList memberInfos = clusterStats.Nodes;
lock (memberInfos.SyncRoot)
{
int maxtries = memberInfos.Count;
NodeInfo info = null;
do
{
info = (NodeInfo)memberInfos[_lastServ % memberInfos.Count];
_lastServ = ++_lastServ % memberInfos.Count;
if (info.Status.IsAnyBitSet(NodeStatus.Running))
{
return(info);
}
maxtries--;
}while (maxtries > 0);
}
return(null);
}
/// <summary>
/// Combines the collected statistics of the nodes, in a partitioned environment.
/// </summary>
/// <returns></returns>
public static CacheStatistics CombinePartitionReplicasStatistics(ClusterCacheStatistics s)
{
CacheStatistics stats = new CacheStatistics();
if (s.Nodes == null)
{
return(stats);
}
bool zeroSeen = false;
for (int i = 0; i < s.Nodes.Count; i++)
{
NodeInfo info = s.Nodes[i] as NodeInfo;
if (info == null || info.Statistics == null ||
!info.Status.IsAnyBitSet(NodeStatus.Coordinator | NodeStatus.SubCoordinator))
{
continue;
}
stats.HitCount += info.Statistics.HitCount;
stats.MissCount += info.Statistics.MissCount;
stats.UpdateCount(stats.Count + info.Statistics.Count);
stats.MaxCount += info.Statistics.MaxCount;
if (info.Statistics.MaxCount == 0)
{
zeroSeen = true;
}
}
stats.MaxSize = s.LocalNode.Statistics.MaxSize;
if (zeroSeen)
{
stats.MaxCount = 0;
}
return(stats);
}
/// <summary>
/// Return the next node in call balacing order that is fully functional.
/// </summary>
/// <returns></returns>
internal Address SelectNode(ClusterCacheStatistics clusterStats, SubCluster targetGroup, Address localAddress)
{
ArrayList servers = targetGroup.Servers;
ArrayList memberInfos = clusterStats.Nodes;
//lock (servers.SyncRoot)
{
int maxtries = servers.Count;
Address address = null;
//if local node participates as a backup in the
//target group then return the local node.
foreach (Address node in servers)
{
if (node.IpAddress.Equals(localAddress.IpAddress))
{
if (IsNodeRunning(node, memberInfos))
{
return(node);
}
}
}
//if local node could not be selected then
//do the call balancing.
do
{
address = (Address)servers[_lastServ % servers.Count];
_lastServ = ++_lastServ % servers.Count;
if (IsNodeRunning(address, memberInfos))
{
return(address);
}
maxtries--;
}while (maxtries > 0);
}
return(null);
}
private void PrintDetailedCacheInfo(CacheStatistics s, string topology, string partId, bool isRunning, string cacheName, string configString, string pid)
{
long MaxSize = 0;
string schemeName = topology;
bool running = isRunning;
OutputProvider.WriteLine("Cache-Name:\t\t{0}", cacheName);
OutputProvider.WriteLine("Topology:\t\t{0} ", schemeName);
if (running)
{
OutputProvider.WriteLine("UpTime: " + s.UpTime);
if (s.MaxSize != 0)
{
OutputProvider.WriteLine("Capacity: " + ((s.MaxSize / 1024) / 1024) + " MB");
}
else
{
OutputProvider.WriteLine("Capacity: " + MaxSize + "MB");
}
OutputProvider.WriteLine("Item Count: " + s.Count);
}
OutputProvider.WriteLine("Status:\t\t\t{0}", isRunning ? "Running" : "Stopped");
if (running)
{
OutputProvider.WriteLine("Process-ID:\t\t{0}", pid);
if (s is ClusterCacheStatistics)
{
System.Text.StringBuilder nodes = new System.Text.StringBuilder();
ClusterCacheStatistics cs = s as ClusterCacheStatistics;
OutputProvider.WriteLine("Cluster-size: " + cs.Nodes.Count);
MaxSize = (cs.LocalNode.Statistics.MaxSize / 1024) / 1024;
foreach (NodeInfo n in cs.Nodes)
{
nodes.Append(" ").Append(n.Address).Append("\n");
}
OutputProvider.WriteLine("{0}", nodes.ToString());
if (partId != null && partId != string.Empty)
{
if (cs.SubgroupNodes != null && cs.SubgroupNodes.Contains(partId.ToLower()))
{
nodes = new System.Text.StringBuilder();
ArrayList groupNodes = cs.SubgroupNodes[partId.ToLower()] as ArrayList;
OutputProvider.WriteLine("Partition-size: " + groupNodes.Count);
foreach (Address address in groupNodes)
{
nodes.Append(" ").Append(address).Append("\n");
}
}
OutputProvider.WriteLine("{0}", nodes.ToString());
}
}
else
{
OutputProvider.WriteLine("");
}
}
else
{
OutputProvider.WriteLine("");
}
}
static private void PrintDetailedCacheInfo(Cache cache, string partId, bool printConf, bool xmlSyntax)
{
CacheStatistics s = cache.Statistics;
long MaxSize = 0;
string schemeName = s.ClassName.ToLower(CultureInfo.CurrentCulture);
bool running = cache.IsRunning;
Console.WriteLine("Cache-ID: {0}", cache.Name);
if (partId != null && partId != string.Empty)
{
Console.WriteLine("Partition-ID: {0}", partId);
}
Console.WriteLine("Scheme: {0}", schemeName);
Console.WriteLine("Status: {0}", cache.IsRunning ? "Running":"Stopped");
if (running)
{
if (s is ClusterCacheStatistics)
{
System.Text.StringBuilder nodes = new System.Text.StringBuilder();
ClusterCacheStatistics cs = s as ClusterCacheStatistics;
Console.WriteLine("Cluster size: {0}", cs.Nodes.Count);
MaxSize = (cs.LocalNode.Statistics.MaxSize / 1024) / 1024;
foreach (NodeInfo n in cs.Nodes)
{
nodes.Append(" ").Append(n.Address).Append("\n");
}
Console.Write("{0}", nodes.ToString());
if (partId != null && partId != string.Empty)
{
if (cs.SubgroupNodes != null && cs.SubgroupNodes.Contains(partId.ToLower()))
{
nodes = new System.Text.StringBuilder();
ArrayList groupNodes = cs.SubgroupNodes[partId.ToLower()] as ArrayList;
Console.WriteLine("Partition size: {0}", groupNodes.Count);
foreach (Address address in groupNodes)
{
nodes.Append(" ").Append(address).Append("\n");
}
}
Console.Write("{0}", nodes.ToString());
}
}
Console.WriteLine("UpTime: {0}", s.UpTime);
if (s.MaxSize != 0)
{
Console.WriteLine("Capacity: {0} MB", ((s.MaxSize / 1024) / 1024));
}
else
{
Console.WriteLine("Capacity: {0} MB", MaxSize);
}
Console.WriteLine("Count: {0}", s.Count);
}
if (printConf)
{
try
{
if (xmlSyntax)
{
PropsConfigReader pr = new PropsConfigReader(cache.ConfigString);
Console.WriteLine("Configuration:\n{0}", ConfigReader.ToPropertiesXml(pr.Properties, true));
}
else
{
Console.WriteLine("Configuration:\n{0}", cache.ConfigString);
}
}
catch (ConfigurationException) {}
}
Console.WriteLine("");
}
/// <summary>
/// Returns an ordered list of nodes, based upon the preferred order of
/// load balancing algorithm.
/// </summary>
/// <param name="memberInfo">collected information about all the server nodes</param>
/// <returns>ordered list of server nodes</returns>
NodeInfo IActivityDistributor.SelectNode(ClusterCacheStatistics clusterStats, object data)
{
ArrayList memberInfos = clusterStats.Nodes;
string group = data as string;
bool gpAfStrict = false;
NodeInfo min = null;
NodeInfo gMin = null;
NodeInfo sMin = null;
lock (memberInfos.SyncRoot)
{
if (group != null)
{
gpAfStrict = clusterStats.ClusterDataAffinity != null?clusterStats.ClusterDataAffinity.Contains(group) : false;
}
for (int i = 0; i < memberInfos.Count; i++)
{
NodeInfo curr = (NodeInfo)memberInfos[i];
if (curr.Status.IsAnyBitSet(NodeStatus.Coordinator | NodeStatus.SubCoordinator))
{
if (curr.Statistics == null)
{
continue;
}
if (min == null || (curr.Statistics.Count < min.Statistics.Count))
{
min = curr;
}
if (curr.DataAffinity != null)
{
if (curr.DataAffinity.IsExists(group))
{
if (gMin == null || (curr.Statistics.Count < gMin.Statistics.Count))
{
gMin = (NodeInfo)memberInfos[i];
}
}
else if (curr.DataAffinity.Strict == false)
{
sMin = min;
}
else
{
min = sMin;
}
}
else
{
sMin = min;
}
}
}
}
if (gpAfStrict && gMin == null)
{
if (NCacheLog.IsInfoEnabled)
{
NCacheLog.Info("CoordinatorBiasedObjectCountBalancer.SelectNode", "strict group affinity, no node found to accommodate " + group + " data");
}
return(null);
}
return((gMin == null) ? sMin : gMin);
}
