public Unit ClearData(long time, SessionId sessionId, string key)
{
Sync.ClearData(sessionId, key, time);
cluster.Iter(c => c.Delete(SessionKey(sessionId)));
return(cluster.Iter(c =>
c.PublishToChannel(
SessionsNotify,
SessionAction.ClearData(time, sessionId, key, system, nodeName))));
}
public int Incoming(SessionAction incoming)
{
if (incoming.SystemName == system.Value && incoming.NodeName == nodeName.Value)
{
return(0);
}
switch (incoming.Tag)
{
case SessionActionTag.Touch:
Touch(incoming.SessionId);
break;
case SessionActionTag.Start:
Start(incoming.SessionId, incoming.Timeout, Map.empty <string, object>());
break;
case SessionActionTag.Stop:
Stop(incoming.SessionId);
break;
case SessionActionTag.SetData:
var type = Type.GetType(incoming.Type);
if (type == null)
{
logErr("Session-value type not found: " + incoming.Type);
}
else
{
var value = Deserialise.Object(incoming.Value, type);
if (value == null)
{
logErr("Session-value is null or failed to deserialise: " + incoming.Value);
}
else
{
SetData(incoming.SessionId, incoming.Key, value, incoming.Time);
}
}
break;
case SessionActionTag.ClearData:
ClearData(incoming.SessionId, incoming.Key, incoming.Time);
break;
default:
return(0);
}
return(1);
}
public Unit SetData(long time, SessionId sessionId, string key, object value)
{
Sync.SetData(sessionId, key, value, time);
cluster.Iter(c => c.HashFieldAddOrUpdate(SessionKey(sessionId), key, value));
return(cluster.Iter(c => c.PublishToChannel(SessionsNotify, SessionAction.SetData(
time,
sessionId,
key,
JsonConvert.SerializeObject(value, ActorSystemConfig.Default.JsonSerializerSettings),
system,
nodeName
))));
}
public int Incoming(SessionAction incoming)
{
if (incoming.SystemName == system.Value && incoming.NodeName == nodeName.Value) return 0;
switch(incoming.Tag)
{
case SessionActionTag.Touch:
Touch(incoming.SessionId);
break;
case SessionActionTag.Start:
Start(incoming.SessionId, incoming.Timeout, Map.empty<string,object>());
break;
case SessionActionTag.Stop:
Stop(incoming.SessionId);
break;
case SessionActionTag.SetData:
var type = Type.GetType(incoming.Type);
if (type == null)
{
logErr("Session-value type not found: " + incoming.Type);
}
else
{
var value = Deserialise.Object(incoming.Value, type);
if (value == null)
{
logErr("Session-value is null or failed to deserialise: " + incoming.Value);
}
else
{
SetData(incoming.SessionId, incoming.Key, value, incoming.Time);
}
}
break;
case SessionActionTag.ClearData:
ClearData(incoming.SessionId, incoming.Key, incoming.Time);
break;
default:
return 0;
}
return 1;
}
public SessionManager(Option <ICluster> cluster, SystemName system, ProcessName nodeName, VectorConflictStrategy strategy)
{
this.cluster = cluster;
this.system = system;
this.nodeName = nodeName;
Sync = new SessionSync(system, nodeName, strategy);
cluster.Iter(c =>
{
notify = c.SubscribeToChannel <SessionAction>(SessionsNotify).Subscribe(act => Sync.Incoming(act));
var now = DateTime.UtcNow;
// Look for stranded sessions that haven't been removed properly. This is done once only
// on startup because the systems should be shutting down sessions on their own. This just
// catches the situation where an app-domain died without shutting down properly.
c.QuerySessionKeys()
.Map(key =>
from ts in c.GetHashField <long>(key, LastAccessKey)
from to in c.GetHashField <int>(key, TimeoutKey)
where new DateTime(ts) < now.AddSeconds(to * 2) // Multiply by 2, just to catch genuine non-active sessions
select c.Delete(key))
.Iter(id => { });
// Remove session keys when an in-memory session ends
ended = SessionEnded.Subscribe(sid => Stop(sid));
touch = Sync.Touched.Subscribe(tup =>
{
try
{
c.HashFieldAddOrUpdate(SessionKey(tup.Item1), LastAccessKey, DateTime.UtcNow.Ticks);
c.PublishToChannel(SessionsNotify, SessionAction.Touch(tup.Item1, system, nodeName));
}
catch (Exception e)
{
logErr(e);
}
});
});
}
public Unit Stop(SessionId sessionId)
{
Sync.Stop(sessionId);
cluster.Iter(c => c.Delete(SessionKey(sessionId)));
return(cluster.Iter(c => c.PublishToChannel(SessionsNotify, SessionAction.Stop(sessionId, system, nodeName))));
}
public Unit Start(SessionId sessionId, int timeoutSeconds)
{
Sync.Start(sessionId, timeoutSeconds, LoadData(sessionId));
cluster.Iter(c => c.HashFieldAddOrUpdate(SessionKey(sessionId), TimeoutKey, timeoutSeconds));
return(cluster.Iter(c => c.PublishToChannel(SessionsNotify, SessionAction.Start(sessionId, timeoutSeconds, system, nodeName))));
}
