public GatewaySagaBuilder WithDefaultImplementation()
{
_responseFactory = new DepositResponseFactory();
_clearingRequestFactory = new ClearingRequestFactory();
_accountingLogic = new AccountingLogicFacade();
return(this);
}
//TODO: resolve components with IOC
public GatewaySaga(IDepositResponseFactory responseFactory, IClearingRequestFactory clearingRequestFactory, IAccountingLogicFacade accountingLogic, RequestSettings clearingRequestSettings)
{
_responseFactory = responseFactory;
_clearingRequestFactory = clearingRequestFactory;
InstanceState(x => x.CurrentState);
Event(() => DepositRequested, x => x.CorrelateBy(request => request.DepositRequest.CorellationKey, context => context.Message.CorellationKey)
.SelectId(context => NewId.NextGuid()));
Request(() => AuthorizationFlow, state => state.ClearingRequestId, clearingRequestSettings);
Request(() => SettlementFlow, state => state.ClearingRequestId, clearingRequestSettings);
Initially(When(DepositRequested)
.Then(context =>
{
context.Instance.TransactionId = context.Instance.CorrelationId;
context.Instance.DepositRequest = context.Data.Copy();
})
.Respond(context => _responseFactory.FromPendingRequest(context.Instance.TransactionId.GetValueOrDefault(), context.Instance.DepositRequest))
.TransitionTo(AuthorizationFlow.Pending)
.Request(AuthorizationFlow,
context => _clearingRequestFactory.FromDepositRequest(context.Instance.TransactionId.GetValueOrDefault(), context.Data)));
During(AuthorizationFlow.Pending,
When(AuthorizationFlow.Completed, filter => filter.Data.ClearingStatus == ClearingStatus.Authorized)
.Then(context => accountingLogic.Credit(context.Instance.DepositRequest, context.Data,
response => context.Instance.Response = response))
.TransitionTo(SettlementFlow.Pending)
.Request(SettlementFlow, context => _clearingRequestFactory.FromAuthorizationResponse(context.Data)),
When(AuthorizationFlow.Completed, filter => filter.Data.ClearingStatus == ClearingStatus.Rejected)
.Then(context => context.Instance.Response = _responseFactory.FromClearingResponse(context.Instance.DepositRequest, context.Data))
.Finalize(),
When(AuthorizationFlow.Faulted)
.Then(context => context.Instance.Response = _responseFactory.FromClearingFault(context.Data)).Finalize(),
When(AuthorizationFlow.TimeoutExpired)
.Then(context => context.Instance.Response = _responseFactory.FromClearingTimeout(context.Instance.TransactionId.GetValueOrDefault(),
context.Instance.DepositRequest, context.Data)).Finalize());
During(SettlementFlow.Pending,
When(SettlementFlow.Completed)
.Then(context => context.Instance.Response = _responseFactory.FromClearingResponse(context.Instance.DepositRequest, context.Data))
.Finalize(),
When(SettlementFlow.Faulted)
.Then(context => context.Instance.Response = _responseFactory.FromClearingFault(context.Data)).Finalize(),
When(SettlementFlow.TimeoutExpired)
.Then(context => context.Instance.Response = _responseFactory.FromClearingTimeout(context.Instance.TransactionId.GetValueOrDefault(),
context.Instance.DepositRequest, context.Data)).Finalize());
Finally(context => context.Publish(x => x.Instance.Response));
SetCompletedWhenFinalized();
//TODO: Example of compensation
}
public GatewaySagaBuilder WithResponseFactory <T>() where T : IDepositResponseFactory, new()
{
_responseFactory = new T();
return(this);
}
