async Task <TOut> InvokeMessageHandle <TOut>(IBusinessQuery <TOut> query, Type eventHandler,
object instance)
where TOut : class
{
Logger.LogInformation(EventIdConstants.QueryStartInvokinMessageHandle, $"InvokeMessageHandle. Correlation_Id is ={query.CorrelationId} Start Invoking Message Handler.");
var res = (from info in eventHandler.GetMethods()
where info.Name.ToLower() == "handle"
select info.Invoke(instance, new object[] { query }))
.FirstOrDefault();
var task1 = res as Task <TOut>;
if (task1 == null)
{
return(null);
}
if (task1.Exception != null)
{
Logger.LogError(EventIdConstants.QueryInvokingMessageHandleWasFaield, task1.Exception, $"InvokeMessageHandle. Correlation_Id is ={query.CorrelationId} Error in Invoking Message Handle.");
return(new ChakadResult
{
Succeeded = false,
AggregatedExceptions = task1.Exception,
Message = task1.Exception.GetaAllMessages()
} as TOut);
}
var task = await task1;
Logger.LogInformation(EventIdConstants.QueryInvokingMessageHandleWasSuccessfully, $"InvokeMessageHandle.Correlation_Id is ={query.CorrelationId} Message Handler invoked successfully.");
return(task);
}
public async Task <TOut> RunQuery <TOut> (IBusinessQuery <TOut> query, TimeSpan?timeout = null,
Action <Exception, TimeSpan> action = null, SendOptions options = null)
where TOut : class
{
var task = await queryEngeen.StartProcess(query, timeout, action, options);
return(task);
}
public async Task <TOut> Run <TOut>(IBusinessQuery <TOut> query, TimeSpan?timeout = null,
Action <Exception, TimeSpan> action = null, SendOptions options = null)
where TOut : QueryResult
{
var commandType = query.GetType();
var baseType = query.GetType().BaseType;
if (baseType == null)
{
throw new Exception();
}
var eventHandler = ChakadContainer.ResolveQueryHandler(commandType);
if (eventHandler == null)
{
throw new ChakadPipelineNotFoundHandler(@"Not found handler for {0}", query);
}
if (timeout == null)
{
timeout = new TimeSpan(0, 0, 0, 0, 500);
}
if (action == null)
{
action = (ex, time) =>
{
//TODO log ex
Console.WriteLine(ex.ToString());
};
}
var policy = Policy.Handle <Exception>()
.WaitAndRetryAsync(1, retryAttempt => timeout.Value, action);
using (var scope = ChakadContainer.Autofac.BeginLifetimeScope(ChakadContainer.AutofacScopeName))
{
var handler = scope.ResolveOptional(eventHandler);
TOut result = null;
await policy.ExecuteAsync(async() =>
{
result = await InvokeMessageHandle(query, eventHandler, handler);
//result = await (Task<TOut>) concreteType.GetMethod("Handle").Invoke(handler, new object[] {query});
});
return(result);
}
}
async Task <TOut> InvokeMessageHandle <TOut>(IBusinessQuery <TOut> command, Type eventHandler,
object instance)
where TOut : QueryResult
{
var res = (from info in eventHandler.GetMethods()
where info.Name.ToLower() == "handle"
select info.Invoke(instance, new object[] { command }))
.FirstOrDefault();
var task = res as Task <TOut>;
return(task?.Result);
}
public async Task <TOut> StartProcess <TOut>(IBusinessQuery <TOut> query, TimeSpan?timeout = null,
Action <Exception, TimeSpan> action = null, SendOptions options = null)
where TOut : class
{
var queryType = query.GetType();
Logger.LogInformation(EventIdConstants.QueryStartProcess, queryType.FullName, query, $"Start Process query with Correlation_Id = {query.CorrelationId}");
var baseType = query.GetType().BaseType;
if (baseType == null)
{
Logger.LogError(EventIdConstants.QueryBaseTypeIsEmpty, query.CorrelationId, $"StartProcess. Correlation_Id is ={query.CorrelationId} Query base type is null.");
throw new Exception();
}
var eventHandler = ChakadContainer.ResolveQueryHandler(queryType);
if (eventHandler == null)
{
var exeption = new ChakadPipelineNotFoundHandler(@"Not found handler for {0}", query.CorrelationId);
Logger.LogError(EventIdConstants.QueryNotFoundHandler, exeption, query.CorrelationId,
$"StartProcess. Correlation_Id is ={query.CorrelationId}. Not found handler");
throw exeption;
}
if (timeout == null)
{
timeout = new TimeSpan(0, 0, 0, 0, 500);
}
if (action == null)
{
action = (ex, time) =>
{
//TODO log ex
Console.WriteLine(ex.ToString());
};
}
var policy = Policy.Handle <Exception>()
.WaitAndRetryAsync(1, retryAttempt => timeout.Value, action);
Logger.LogInformation(EventIdConstants.QueryInitializeCircuteBreaker,
query.CorrelationId,
$"Start Process. Correlation_Id is ={query.CorrelationId} Set Retry Count equals to 2 in case of any failures in invoking message handler.");
using (var scope = ChakadContainer.Autofac.BeginLifetimeScope(ChakadContainer.AutofacScopeName))
{
var handler = scope.ResolveOptional(eventHandler);
TOut result = null;
await policy.ExecuteAsync(async() =>
{
result = await InvokeMessageHandle(query, eventHandler, handler);
});
return(result);
}
}
public async Task <TOut> Handle(IBusinessQuery <TOut> message)
{
return(await InternalHandle((T)message));
}