/// <summary>
/// Request current status from server node.
/// </summary>
public void Refresh(Peers peers)
{
if (!active)
{
return;
}
try
{
if (tendConnection.IsClosed())
{
tendConnection = CreateConnection(host.tlsName, address, cluster.connectionTimeout, null);
if (cluster.user != null)
{
if (!EnsureLogin())
{
AdminCommand command = new AdminCommand(ThreadLocalData.GetBuffer(), 0);
if (!command.Authenticate(cluster, tendConnection, sessionToken))
{
// Authentication failed. Session token probably expired.
// Must login again to get new session token.
command.Login(cluster, tendConnection, out sessionToken, out sessionExpiration);
}
}
}
}
else
{
if (cluster.user != null)
{
EnsureLogin();
}
}
string[] commands = cluster.rackAware ? INFO_PERIODIC_REB : INFO_PERIODIC;
Dictionary <string, string> infoMap = Info.Request(tendConnection, commands);
VerifyNodeName(infoMap);
VerifyPeersGeneration(infoMap, peers);
VerifyPartitionGeneration(infoMap);
if (cluster.rackAware)
{
VerifyRebalanceGeneration(infoMap);
}
peers.refreshCount++;
failures = 0;
}
catch (Exception e)
{
peers.genChanged = true;
RefreshFailed(e);
}
}
private bool EnsureLogin()
{
if (performLogin > 0 || (sessionExpiration.HasValue && DateTime.Compare(DateTime.UtcNow, sessionExpiration.Value) >= 0))
{
AdminCommand admin = new AdminCommand(ThreadLocalData.GetBuffer(), 0);
admin.Login(cluster, tendConnection, out sessionToken, out sessionExpiration);
performLogin = 0;
return(true);
}
return(false);
}
private void ValidateAddress(Cluster cluster, IPAddress address, string tlsName, int port, bool detectLoadBalancer)
{
IPEndPoint socketAddress = new IPEndPoint(address, port);
Connection conn = (cluster.tlsPolicy != null) ?
new TlsConnection(cluster.tlsPolicy, tlsName, socketAddress, cluster.connectionTimeout, null) :
new Connection(socketAddress, cluster.connectionTimeout, null);
try
{
if (cluster.user != null)
{
// Login
AdminCommand admin = new AdminCommand(ThreadLocalData.GetBuffer(), 0);
admin.Login(cluster, conn, out sessionToken, out sessionExpiration);
if (cluster.tlsPolicy != null && cluster.tlsPolicy.forLoginOnly)
{
// Switch to using non-TLS socket.
SwitchClear sc = new SwitchClear(cluster, conn, sessionToken);
conn.Close();
address = sc.clearAddress;
socketAddress = sc.clearSocketAddress;
conn = sc.clearConn;
// Disable load balancer detection since non-TLS address has already
// been retrieved via service info command.
detectLoadBalancer = false;
}
}
List <string> commands = new List <string>(5);
commands.Add("node");
commands.Add("partition-generation");
commands.Add("features");
bool hasClusterName = cluster.HasClusterName;
if (hasClusterName)
{
commands.Add("cluster-name");
}
string addressCommand = null;
if (detectLoadBalancer)
{
// Seed may be load balancer with changing address. Determine real address.
addressCommand = (cluster.tlsPolicy != null) ?
cluster.useServicesAlternate ? "service-tls-alt" : "service-tls-std" :
cluster.useServicesAlternate ? "service-clear-alt" : "service-clear-std";
commands.Add(addressCommand);
}
// Issue commands.
Dictionary <string, string> map = Info.Request(conn, commands);
// Node returned results.
this.primaryHost = new Host(address.ToString(), tlsName, port);
this.primaryAddress = socketAddress;
this.primaryConn = conn;
ValidateNode(map);
ValidatePartitionGeneration(map);
SetFeatures(map);
if (hasClusterName)
{
ValidateClusterName(cluster, map);
}
if (addressCommand != null)
{
SetAddress(cluster, map, addressCommand, tlsName);
}
}
catch (Exception)
{
conn.Close();
throw;
}
}
/// <summary>
/// Request current status from server node.
/// </summary>
public void Refresh(Peers peers)
{
if (!active)
{
return;
}
try
{
if (tendConnection.IsClosed())
{
tendConnection = cluster.CreateConnection(host.tlsName, address, cluster.connectionTimeout, null);
if (cluster.user != null)
{
try
{
if (!EnsureLogin())
{
AdminCommand command = new AdminCommand(ThreadLocalData.GetBuffer(), 0);
if (!command.Authenticate(cluster, tendConnection, sessionToken))
{
// Authentication failed. Session token probably expired.
// Must login again to get new session token.
command.Login(cluster, tendConnection, out sessionToken, out sessionExpiration);
}
}
}
catch (Exception)
{
tendConnection.Close();
throw;
}
}
}
else
{
if (cluster.user != null)
{
EnsureLogin();
}
}
if (peers.usePeers)
{
Dictionary <string, string> infoMap = Info.Request(tendConnection, "node", "peers-generation", "partition-generation");
VerifyNodeName(infoMap);
VerifyPeersGeneration(infoMap, peers);
VerifyPartitionGeneration(infoMap);
}
else
{
string[] commands = cluster.useServicesAlternate ?
new string[] { "node", "partition-generation", "services-alternate" } :
new string[] { "node", "partition-generation", "services" };
Dictionary <string, string> infoMap = Info.Request(tendConnection, commands);
VerifyNodeName(infoMap);
VerifyPartitionGeneration(infoMap);
AddFriends(infoMap, peers);
}
peers.refreshCount++;
failures = 0;
}
catch (Exception e)
{
if (peers.usePeers)
{
peers.genChanged = true;
}
RefreshFailed(e);
}
}