/// <summary>
/// Invoke the handler pipeline and process the passed message.
/// </summary>
/// <param name="body">The body.</param>
/// <param name="wallet">The wallet.</param>
/// <param name="pool">The pool.</param>
/// <returns></returns>
/// <exception cref="Exception">Expected inner message to be of type 'ForwardMessage'</exception>
/// <exception cref="AgentFrameworkException">Couldn't locate a message handler for type {messageType}</exception>
protected async Task ProcessAsync(byte[] body, Wallet wallet, Pool pool = null)
{
EnsureConfigured();
var agentContext = new AgentContext {
Wallet = wallet, Pool = pool
};
agentContext.AddNext(new MessagePayload(body, true));
while (agentContext.TryGetNext(out var message))
{
MessagePayload messagePayload;
if (message.Packed)
{
var unpacked = await CryptoUtils.UnpackAsync(agentContext.Wallet, message.Payload);
messagePayload = new MessagePayload(unpacked.Message, false);
}
else
{
messagePayload = message;
}
if (_handlers.Where(handler => handler != null).FirstOrDefault(
handler => handler.SupportedMessageTypes.Any(
type => type.Equals(messagePayload.GetMessageType(), StringComparison.OrdinalIgnoreCase))) is IMessageHandler messageHandler)
{
await messageHandler.ProcessAsync(agentContext, messagePayload);
}
else
{
throw new AgentFrameworkException(ErrorCode.InvalidMessage,
$"Couldn't locate a message handler for type {messagePayload.GetMessageType()}");
}
}
}
private async Task <AgentMessage> ProcessMessage(IAgentContext agentContext, MessagePayload message)
{
MessagePayload messagePayload;
if (message.Packed)
{
var unpacked = await CryptoUtils.UnpackAsync(agentContext.Wallet, message.Payload);
Logger.LogInformation($"Agent Message Received : {unpacked.Message}");
messagePayload = new MessagePayload(unpacked.Message, false);
if (unpacked.SenderVerkey != null && agentContext.Connection == null)
{
agentContext.Connection =
await ConnectionService.ResolveByMyKeyAsync(agentContext, unpacked.RecipientVerkey);
}
}
else
{
messagePayload = message;
}
if (_handlers.Where(handler => handler != null).FirstOrDefault(
handler => handler.SupportedMessageTypes.Any(
type => type.Equals(messagePayload.GetMessageType(), StringComparison.OrdinalIgnoreCase))) is
IMessageHandler messageHandler)
{
Logger.LogDebug("Processing message type {MessageType}, {MessageData}", messagePayload.GetMessageType(),
messagePayload.Payload.GetUTF8String());
var outboundMessage = await messageHandler.ProcessAsync(agentContext, messagePayload);
return(outboundMessage);
}
throw new AgentFrameworkException(ErrorCode.InvalidMessage,
$"Couldn't locate a message handler for type {messagePayload.GetMessageType()}");
}
internal bool TryGetNext(out MessagePayload message) => _queue.TryDequeue(out message);
/// <summary> /// Adds a message to the current processing queue /// </summary> /// <param name="message"></param> public void AddNext(MessagePayload message) => _queue.Enqueue(message);
/// <inheritdoc /> public Task ProcessAsync(IAgentContext agentContext, MessagePayload messagePayload) => ProcessAsync(messagePayload.GetMessage <T>(), agentContext);