public async Task <Schematic> GetSchematic(string schematicName, CancellationToken cancellationToken)
{
Schematic configuration;
using (var repository = _repositoryContextFactory
.OpenContext(_apiKey))
{
configuration = await repository.Schematics
.RetrieveSchematicAsync(schematicName, cancellationToken)
.ConfigureAwait(false);
}
return(configuration);
}
public async Task <InstanceRecord> FireAsync(
Trigger trigger,
string contentType, string payload, Guid?lastCommitTag,
CancellationToken cancellationToken)
{
using (var dataContext = _repositoryContextFactory.OpenContext(ApiKey))
{
var currentState = await dataContext.Machines
.GetMachineStateAsync(MachineId, cancellationToken).ConfigureAwait(false);
var stateConfig = StateMappings[currentState];
var transition = stateConfig.Transitions.Single(t => t.TriggerName == trigger.TriggerName);
if (transition.Guard != null)
{
var guardConnector = await _connectorFactoryResolver
.ResolveConnectorFactory(transition.Guard.ConnectorKey)
.BuildConnectorAsync(ApiKey, cancellationToken).ConfigureAwait(false);
if (!await guardConnector
.ConstructPredicate(this, transition.Guard.Configuration)
.Invoke(cancellationToken).ConfigureAwait(false))
{
throw new InvalidOperationException("Guard clause prevented transition.");
}
}
currentState = await dataContext.Machines.SetMachineStateAsync(
MachineId,
transition.ResultantStateName,
trigger.TriggerName,
lastCommitTag ?? Guid.Parse(currentState.CommitTag),
cancellationToken).ConfigureAwait(false);
stateConfig = StateMappings[currentState];
if (stateConfig.OnEntry != null)
{
try
{
var entryConnector = await _connectorFactoryResolver
.ResolveConnectorFactory(stateConfig.OnEntry.ConnectorKey)
.BuildConnectorAsync(ApiKey, cancellationToken).ConfigureAwait(false);
await entryConnector
.ConstructAction(this, currentState, contentType, payload, stateConfig.OnEntry.Configuration)
.Invoke(cancellationToken).ConfigureAwait(false);
}
catch
{
if (stateConfig.OnEntry.FailureTransition != null)
{
await FireAsync(
new Trigger(stateConfig.OnEntry.FailureTransition.TriggerName),
contentType,
payload,
Guid.Parse(currentState.CommitTag),
cancellationToken).ConfigureAwait(false);
}
throw;
}
}
return(currentState);
}
}