private Exception reconnect()
{
if (_conn != null)
{
return(null);
}
// reconnect
Exception error = null;
lock (_token)
{
if (_conn != null)
{
return(null);
}
// create a new clientID
_clientID = string.Format("{0}-{1}", _serviceID, Guid.NewGuid());
// fields
var fields = getConnLogFields();
// now create a new connect
var opts = StanOptions.GetDefaultOptions();
opts.NatsURL = _serverURL;
try
{
// reset event
_publishAbort.Reset();
// reconnect
var conn = nats.DefaultFactory.CreateConnection(_clusterID, _clientID, opts);
if (conn == null)
{
throw new ApplicationException(string.Format("nats connection failed, conn==null"));
}
// save conn
_conn = conn;
// log info
logInfo(fields, "nats connection completed");
// resubscribe all
foreach (var item in _subs.Values)
{
IStanSubscription sub = null;
internalSubscribe(item.subject, item.queue, item.options, item.cb, out sub);
item.sub = sub;
}
}
catch (Exception ex)
{
error = ex;
}
}
// return
return(error);
}
private void internalClose()
{
lock (_token)
{
// close all subscription
foreach (var pair in _subs)
{
Exception error = null;
var item = pair.Value;
if (item.sub != null)
{
var fields = getSubLogFields(item.subject, item.queue, item.options);
try
{
item.sub.Close();
}
catch (Exception ex)
{
error = ex;
}
item.sub = null;
if (error != null)
{
fields["error"] = error;
logError(fields, "nats subscription close failed");
}
else
{
logInfo(fields, "nats subscription closed");
}
}
}
// close the connection
if (_conn != null)
{
try { _conn.Close(); } catch { }
_conn = null;
var fields = getConnLogFields();
logInfo(fields, "nats connection closed");
}
}
}
