/// <summary>
/// returns the request corresponding to deserializing the bytes given
/// </summary>
/// <param name="data">bytes to deserialize</param>
/// <returns>request deserialized</returns>
public IRingMasterBackendRequest GetRequest(byte[] data)
{
if (data == null)
{
return(null);
}
RequestCall call = this.marshaller.DeserializeRequestFromBytes(data);
return(call.Request);
}
/// <summary>
/// Handles ringmaster requests.
/// </summary>
/// <param name="request">RingMaster request</param>
/// <param name="onCompletion">Action to execute when the replication is completed</param>
/// <remarks>
/// Implementing the <see cref="IRingMasterRequestHandlerOverlapped"/> makes it possible for
/// several libraries to work directly with the RingMasterBackendCore. This class
/// is being implemented here to avoid having to expose internal classes outside of
/// this library.
/// </remarks>
public void RequestOverlapped(IRingMasterRequest request, Action <RequestResponse, Exception> onCompletion)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
RequestCall call = MarshallerChannel.LocalRequest(request);
call.CallId = (ulong)Interlocked.Increment(ref this.lastAssignedCallId);
this.executor.ProcessMessage(
call.Request,
this.session,
(response, ex) =>
{
response.CallId = call.CallId;
onCompletion?.Invoke(response, ex);
});
}
/// <summary>
/// returns the bytes corresponding to the request given
/// </summary>
/// <param name="req">request to serialize</param>
/// <param name="marshaller">marshaller to use</param>
/// <returns>serialization bytes</returns>
public static byte[] GetBytes(IRingMasterBackendRequest req, IByteArrayMarshaller marshaller)
{
if (req == null)
{
throw new ArgumentNullException("req");
}
if (marshaller == null)
{
throw new ArgumentNullException("marshaller");
}
RequestCall call = new RequestCall()
{
CallId = 0,
Request = req,
};
return(marshaller.SerializeRequestAsBytes(call));
}
/// <summary>
/// Creates the on-wire representation of the given request.
/// </summary>
/// <param name="request">Request to serialize</param>
/// <returns>Serialized data</returns>
public byte[] SerializeRequestAsBytes(RequestCall request)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
// Before serializing, check if the request has a watcher. If it does, add an entry to the tracking data strucuture
// When a watchercall is received from the other side, this data structure will be used to get the correct watcher
// by id and that watcher will be invoked.
this.RegisterWatcher(request.Request.WrappedRequest, this.RegisterWrapperWatcher);
RequestDefinitions.RequestCall call = new RequestDefinitions.RequestCall()
{
CallId = request.CallId,
Request = request.Request.WrappedRequest,
};
return(this.protocol.SerializeRequest(call, this.UsedMarshalVersion));
}
/// <summary>
/// Processes a session initialization request.
/// </summary>
/// <param name="call">The initialization request</param>
/// <param name="session">The session to be initialized</param>
/// <returns>Response for the initialization request</returns>
public RequestResponse ProcessSessionInitialization(RequestCall call, ClientSession session)
{
return(this.backend.ProcessSessionInitialization(call, session));
}