internal void processMsg(object sender, MsgHandlerEventArgs args)
{
bool isClosed = false;
AsyncSubscription sub = null;
Msg raw = null;
MsgProto mp = new MsgProto();
ProtocolSerializer.unmarshal(args.Message.Data, mp);
raw = args.Message;
lock (mu)
{
isClosed = (nc == null);
subMap.TryGetValue(raw.Subject, out sub);
}
if (isClosed || sub == null)
{
return;
}
StanMsg msg = new StanMsg(mp, sub);
sub.processMsg(mp);
}
internal void manualAck(StanMsg m)
{
if (m == null)
{
return;
}
rwLock.EnterReadLock();
string localAckSubject = ackInbox;
bool localManualAck = options.manualAcks;
Connection sc = this.sc;
rwLock.ExitReadLock();
if (localManualAck == false)
{
throw new StanManualAckException();
}
if (sc == null)
{
throw new StanBadSubscriptionException();
}
byte[] b = ProtocolSerializer.createAck(m.proto);
sc.NATSConnection.Publish(localAckSubject, b);
}
/// <summary>
/// Constructor for generating a StanMsgHandlerArgs object. Used for application unit testing.
/// </summary>
/// <param name="m">A NATS streaming message.</param>
public StanMsgHandlerArgs(StanMsg m)
{
msg = m;
}
/// <summary>
/// Constructor for generating a StanMsgHandlerArgs object. Used for application unit testing.
/// </summary>
/// <remarks>
/// Objects of this type are normally generated internally by the NATS streaming client.
/// This constructor has been provided to facilitate application unit testing.
/// </remarks>
/// <param name="data">The message payload.</param>
/// <param name="redelivered">True if the message may have been redelivered.</param>
/// <param name="subject">Subject of the message.</param>
/// <param name="timestamp">Message timestamp, nanoseconds since epoch.(1/1/1970)</param>
/// <param name="sequence">Sequence number of the message.</param>
/// <param name="subscription">Subscription of the message. Must be a valid streaming subscription or null.</param>
public StanMsgHandlerArgs(byte[] data, bool redelivered, string subject, long timestamp, ulong sequence, IStanSubscription subscription)
{
msg = new StanMsg(data, redelivered, subject, timestamp, sequence, subscription);
}
/// <summary>
/// Converts a base <see cref="StanMsg"/> into a <see cref="StanMsgHandlerArgs{TMessage}"/>
/// for the message.
/// </summary>
/// <typeparam name="TMessage">The message type.</typeparam>
/// <param name="message">The base message.</param>
/// <returns>The new <see cref="StanMsg{TMessage}"/></returns>
private static StanMsgHandlerArgs <TMessage> ToHandler <TMessage>(this StanMsg message)
where TMessage : class, IRoundtripData, new()
{
return(new StanMsgHandlerArgs <TMessage>(message.GetProto(), message.GetSubscription()));
}
/// <summary>
/// Returns the <c>private</c> <see cref="AsyncSubscription "/> from a <see cref="StanMsg"/>.
/// </summary>
/// <param name="message">The message.</param>
/// <returns>The <see cref="AsyncSubscription "/>.</returns>
/// <remarks>
/// <note>
/// We need to return the <c>STAN.Client.AsyncScription</c> as the <see cref="object"/>
/// type because it it defined as internal (grrrr....).
/// </note>
/// </remarks>
internal static object GetSubscription(this StanMsg message)
{
return(stanMsgSubscriptionField.GetValue(message));
}
//---------------------------------------------------------------------
// StanMsg extensions
/// <summary>
/// Returns the <c>internal</c> <see cref="MsgProto"/> from a <see cref="StanMsg"/>.
/// </summary>
/// <param name="message">The message.</param>
/// <returns>The <see cref="MsgProto"/>.</returns>
internal static MsgProto GetProto(this StanMsg message)
{
return((MsgProto)stanMsgProtoField.GetValue(message));
}
internal StanMsgHandlerArgs(StanMsg m)
{
msg = m;
}
/// <summary>
/// Uses reflection to call the <c>internal IAsyncSubscription.manualAck(StanMsg)</c> method.
/// </summary>
/// <param name="subscription">The subscription.</param>
/// <param name="msg">The message being acknowledged.</param>
internal static void ManualAck(this object subscription, StanMsg msg)
{
subscriptionManualAckMethod.Invoke(subscription, new object[] { msg });
}
