private async Task <T> InvokeChannelApiAsync <T>(BotAdapter adapter, IBot bot, ClaimsIdentity claimsIdentity, string method, string conversationId, params object[] args)
{
// make sure there is a channel api middleware
if (!adapter.MiddlewareSet.Any(mw => mw is ChannelApiMiddleware))
{
adapter.MiddlewareSet.Use(new ChannelApiMiddleware());
}
_logger.LogInformation($"InvokeChannelApiAsync(). Invoking method \"{method}\"");
var(callerConversationId, callerServiceUrl) = _conversationIdIdFactory.GetConversationInfo(conversationId);
var channelApiInvokeActivity = Activity.CreateInvokeActivity();
channelApiInvokeActivity.Name = InvokeActivityName;
channelApiInvokeActivity.ChannelId = "unknown";
channelApiInvokeActivity.ServiceUrl = callerServiceUrl;
channelApiInvokeActivity.Conversation = new ConversationAccount(id: callerConversationId);
channelApiInvokeActivity.From = new ChannelAccount(id: "unknown");
channelApiInvokeActivity.Recipient = new ChannelAccount(id: "unknown", role: RoleTypes.Bot);
var activityPayload = args?.Where(arg => arg is Activity).Cast <Activity>().FirstOrDefault();
if (activityPayload != null)
{
// fix up activityPayload with original conversation.Id and id
activityPayload.Conversation.Id = callerConversationId;
activityPayload.ServiceUrl = callerServiceUrl;
// use the activityPayload for channel accounts, it will be in From=Bot/Skill Recipient=User,
// We want to send it to the bot as From=User, Recipient=Bot so we have correct state context.
channelApiInvokeActivity.ChannelId = activityPayload.ChannelId;
channelApiInvokeActivity.From = activityPayload.Recipient;
channelApiInvokeActivity.Recipient = activityPayload.From;
// We want ActivityPayload to also be in User->Bot context, if it is outbound it will go through context.SendActivity which will flip outgoing to Bot->User
// regardless this gives us same memory context of User->Bot which is useful for things like EndOfConversation processing being in the correct memory context.
activityPayload.From = channelApiInvokeActivity.From;
activityPayload.Recipient = channelApiInvokeActivity.Recipient;
}
var channelApiArgs = new ChannelApiArgs
{
Method = method,
Args = args
};
channelApiInvokeActivity.Value = channelApiArgs;
// send up to the bot to process it...
await adapter.ProcessActivityAsync(claimsIdentity, (Activity)channelApiInvokeActivity, bot.OnTurnAsync, CancellationToken.None).ConfigureAwait(false);
if (channelApiArgs.Exception != null)
{
throw channelApiArgs.Exception;
}
// Return the result that was captured in the middleware handler.
return((T)channelApiArgs.Result);
}