public void InitializeInstanceContext(InstanceContext instanceContext, Message message, IContextChannel channel)
{
string instanceId;
int headerIndex = message.Headers.FindHeader(Constants.HeaderName, Constants.HeaderNamespace);
if (headerIndex >= 0)
{
instanceId = message.Headers.GetHeader <string>(headerIndex);
}
else
{
instanceId = Guid.NewGuid().ToString();
}
SharedInstanceContextInfo info = new SharedInstanceContextInfo(instanceContext);
info.IncrementBusyCount(); // one for the current caller
info.IncrementBusyCount(); // one for the expiration timer
instanceContext.Extensions.Add(info);
lock (SyncRoot)
{
this.instanceContexts.Add(instanceId, instanceContext);
if (this.expirationThread == null)
{
this.expirationThread = new Thread(RemoveExpiredInstanceContexts);
this.expirationThread.Start();
}
}
instanceContext.Closing += delegate(object sender, EventArgs e)
{
lock (SyncRoot)
{
this.instanceContexts.Remove(instanceId);
if (this.instanceContexts.Count == 0)
{
this.expirationThread.Abort();
this.expirationThread = null;
}
}
};
}
public InstanceContext GetExistingInstanceContext(Message message, IContextChannel channel)
{
int headerIndex = message.Headers.FindHeader(Constants.HeaderName, Constants.HeaderNamespace);
if (headerIndex >= 0)
{
string instanceId = message.Headers.GetHeader <string>(headerIndex);
lock (SyncRoot)
{
if (this.instanceContexts.ContainsKey(instanceId))
{
InstanceContext context = this.instanceContexts[instanceId];
SharedInstanceContextInfo info = context.Extensions.Find <SharedInstanceContextInfo>();
info.IncrementBusyCount();
return(context);
}
}
}
return(null);
}