// Core V3.4 server implementation
#region ISessCtrlV131 Members
/// <summary>
///
/// </summary>
/// <param name="header"></param>
/// <param name="clientInfo"></param>
/// <returns></returns>
public V131SessionReply BeginSessionV131(V131SessionHeader header, V131ClientInfo clientInfo)
{
// validate new client
Guid clientId = clientInfo.NodeGuid;
// - ensure configured client/server envs are the same
if (CoreHelper.ToEnvId(clientInfo.ConfigEnv) != _serverCfg.ModuleInfo.ConfigEnv)
{
// not valid
string msg =
$"Client environment ({clientInfo.ConfigEnv}) <> server environment ({_serverCfg.ModuleInfo.ConfigEnv})!";
Logger.LogWarning(msg);
return(new V131SessionReply(msg));
}
// - ensure build environment is backward compatible
if (CoreHelper.ToEnvId(clientInfo.BuildEnv) < _serverCfg.ModuleInfo.BuildEnv)
{
// not valid
string msg =
$"Client build environment ({clientInfo.BuildEnv}) < server build environment ({_serverCfg.ModuleInfo.BuildEnv})!";
Logger.LogWarning(msg);
return(new V131SessionReply(msg));
}
// - check client version
const string minimumVersion = "3.4.1723.1"; // 1.1.1501.1 March 01, 2019
const string optimalVersion = "3.4.1723.1";
if (!V131Helpers.CheckRequiredFileVersion(Logger, minimumVersion, clientInfo.CompInfo.AssmFVer))
{
// older than minimum - reject connection
string msg = $"Client version ({clientInfo.CompInfo.AssmFVer}) < minimum version ({minimumVersion})!";
Logger.LogError(msg);
Logger.LogDebug("Connection: '{0}' rejected ({1})", clientId, header.ReplyAddress);
return(new V131SessionReply(msg));
}
if (!V131Helpers.CheckRequiredFileVersion(Logger, optimalVersion, clientInfo.CompInfo.AssmFVer))
{
// older than optimal - log warning
string msg = $"Client version ({clientInfo.CompInfo.AssmFVer}) < optimal version ({optimalVersion})!";
Logger.LogWarning(msg);
}
// - ensure STG/PRD envs servers only accessed by valid clients
if (_serverCfg.ModuleInfo.ConfigEnv >= EnvId.Stg_StagingLive && (clientInfo.CompInfo.AssmPTok != _serverCfg.ModuleInfo.CorePTok))
{
string msg =
$"Client signature ({clientInfo.CompInfo.AssmPTok}) <> server signature ({_serverCfg.ModuleInfo.CorePTok})!";
Logger.LogWarning(msg);
return(new V131SessionReply(msg));
}
// - ensure automated unit tests are not running integration tests
if (_serverCfg.ModuleInfo.ConfigEnv >= EnvId.Sit_SystemTest &&
clientInfo.ApplInfo.AssmName.Equals("QTAgent32", StringComparison.OrdinalIgnoreCase))
{
string msg =
$"Unauthorised client: {clientInfo.UserInfo.UserIdentityName} {clientInfo.HostName} {clientInfo.ApplInfo.AssmName}";
Logger.LogWarning(msg);
return(new V131SessionReply(msg));
}
IConnection newConnection;
// build correct connection version
if (header.ReplyContract == typeof(ITransferV341).FullName)
{
newConnection = new ConnectionV34(
Logger, _cacheEngine, _serverCfg, clientId, header.ReplyAddress, NodeType.Client);
}
else
{
// reply contract not supported
string msg = $"ReplyContract not supported: {header.ReplyContract}";
Logger.LogWarning(msg);
return(new V131SessionReply(msg));
}
// success - grant access
IConnection connection = _connectionIndex.GetOrSet(clientId, () => newConnection);
connection.ReplyAddress = header.ReplyAddress;
_cacheEngine.UpdateConnectionState(connection.ClientId, connection.ContractName, connection.ReplyAddress);
// update who stats: domain/name/host/app
StatsCountersDelta.AddToHierarchy(
$"ConnUser.{clientInfo.UserInfo.UserIdentityName}.{clientInfo.HostName}.{clientInfo.ApplInfo.AssmName}");
// update where stats: ip/host/app
StatsCountersDelta.AddToHierarchy(
$"ConnHost.{clientInfo.HostIpV4}.{clientInfo.HostName}.{clientInfo.ApplInfo.AssmName}");
// update version stats:
StatsCountersDelta.AddToHierarchy(
$"CVersion.{clientInfo.BuildEnv}.{string.Join(".", clientInfo.CompInfo.AssmFVer.Split('.'), 0, 2).Replace('.', '_')}.{String.Join(".", clientInfo.CompInfo.AssmFVer.Split('.'), 2, 2).Replace('.', '_')}.{clientInfo.HostName}.{clientInfo.ApplInfo.AssmName}");
Logger.LogDebug("Connection: '{0}' created ({1})", clientId, header.ReplyAddress);
if (header.DebugRequest)
{
Logger.LogDebug(" Identity : {0} ({1})", clientInfo.UserInfo.UserIdentityName, clientInfo.UserInfo.UserFullName);
Logger.LogDebug(" Application: {0} V{1}/{2} ({3}/{4})", clientInfo.ApplInfo.AssmName, clientInfo.ApplInfo.AssmNVer, clientInfo.ApplInfo.AssmFVer, clientInfo.ApplInfo.AssmPTok, clientInfo.ApplInfo.AssmHash);
Logger.LogDebug(" Component : {0} V{1}/{2} ({3}/{4})", clientInfo.CompInfo.AssmName, clientInfo.CompInfo.AssmNVer, clientInfo.CompInfo.AssmFVer, clientInfo.CompInfo.AssmPTok, clientInfo.CompInfo.AssmHash);
Logger.LogDebug(" Client Env.: {0} ({1} build)", clientInfo.ConfigEnv, clientInfo.BuildEnv);
Logger.LogDebug(" Client Intf: {0}", header.ReplyContract);
Logger.LogDebug(" Other Addrs: {0} ({1},{2})", clientInfo.HostName, clientInfo.HostIpV4, String.Join(",", clientInfo.NetAddrs.ToArray()));
}
return(new V131SessionReply(clientId, null));
}
protected override void OnStart()
{
// restore un-expired connections
Logger.LogDebug("Restoring connections...");
DateTimeOffset dtNow = DateTimeOffset.Now;
List <CommonItem> connItems = _cacheEngine.GetCacheItems(
null, ItemKind.Local, typeof(ClientConnectionState).FullName, null, 0, dtNow, true, false);
foreach (CommonItem item in connItems)
{
try
{
var oldConn = XmlSerializerHelper.DeserializeFromString <ClientConnectionState>(
CompressionHelper.DecompressToString(item.YData));
IConnection connection = null;
if (oldConn.Contract == typeof(ITransferV341).FullName)
{
var clientId = new Guid(oldConn.SourceId);
connection = new ConnectionV34(
Logger, _cacheEngine, _serverCfg,
clientId, oldConn.ReplyAddress, NodeType.Client);
connection.ExtendExpiry();
_connectionIndex.Set(clientId, connection);
}
if (connection != null)
{
Logger.LogDebug("Restored connection:");
Logger.LogDebug(" Client Id. : {0}", connection.ClientId);
Logger.LogDebug(" Client Addr: {0}", connection.ReplyAddress);
}
else
{
Logger.LogDebug("Ignoring unsupported connection: '{0}'", oldConn.ReplyAddress);
}
}
catch (Exception e)
{
// failed, however the show must go on
Logger.Log(e);
}
}
// restore subscriptions
Logger.LogDebug("Restoring subscriptions...");
List <CommonItem> subsItems = _cacheEngine.GetCacheItems(
null, ItemKind.Local, typeof(ClientSubscriptionState).FullName, null, 0, dtNow, true, false);
foreach (CommonItem item in subsItems)
{
try
{
var oldSubscription = XmlSerializerHelper.DeserializeFromString <ClientSubscriptionState>(
CompressionHelper.DecompressToString(item.YData));
var subscription = new ClientSubscription(oldSubscription);
var clientId = new Guid(oldSubscription.ConnectionId);
IConnection connection = GetValidConnection(clientId);
if (connection != null)
{
_cacheEngine.RestoreSubscription(subscription);
Logger.LogDebug("Restored subscription:");
Logger.LogDebug(" Client Id: {0}", connection.ClientId);
Logger.LogDebug(" Address : {0}", connection.ReplyAddress);
Logger.LogDebug(" Subs. Id : {0}", subscription.SubscriptionId);
Logger.LogDebug(" AppScopes: {0}", (subscription.AppScopes == null) ? "*" : String.Join(",", subscription.AppScopes));
Logger.LogDebug(" ItemKind : {0}", (subscription.ItemKind == ItemKind.Undefined) ? "(any)" : subscription.ItemKind.ToString());
Logger.LogDebug(" DataType : {0}", subscription.DataTypeName ?? "(any)");
Logger.LogDebug(" Query : {0}", subscription.Expression.DisplayString());
Logger.LogDebug(" MinimumUSN > : {0}", subscription.MinimumUSN);
Logger.LogDebug(" Excl.Deleted?: {0}", (subscription.ExcludeDeleted));
Logger.LogDebug(" Excl.DataBody: {0}", subscription.ExcludeDataBody);
}
else
{
_cacheEngine.DeleteSubscriptionState(subscription.SubscriptionId);
Logger.LogDebug("Ignoring expired subscription id: {0}", oldSubscription.SubscriptionId);
}
}
catch (Exception e)
{
// failed, however the show must go on
Logger.Log(e);
}
}
string svcName = EnvHelper.SvcPrefix(SvcId.CoreServer);
// discovery service
_discoverV111ServerHost = new CustomServiceHost <IDiscoverV111, DiscoverRecverV111>(
Logger, new DiscoverRecverV111(this), _serverCfg.V31DiscoEndpoints,
svcName, typeof(IDiscoverV111).Name, true);
// V3.4 services
_sessCtrlV131ServerHost = new CustomServiceHost <ISessCtrlV131, SessCtrlRecverV131>(
Logger, new SessCtrlRecverV131(this), _serverCfg.V31DiscoEndpoints,
svcName, typeof(ISessCtrlV131).Name, true);
_transferV341ServerHost = new CustomServiceHost <ITransferV341, TransferRecverV341>(
Logger, new TransferRecverV341(this), _serverCfg.V31AsyncEndpoints,
svcName, typeof(ITransferV341).Name, true);
// start housekeeping timer
_housekeepTimer = new Timer(DispatchHousekeepTimeout, null, ServerCfg.CommsHousekeepInterval, ServerCfg.CommsHousekeepInterval);
}
