private void BeginCreatePrepared(ProjectionConfig config, Action onPrepared)
{
_onPrepared = onPrepared;
if (config == null) throw new ArgumentNullException("config");
//TODO: which states are allowed here?
if (_state >= ManagedProjectionState.Preparing)
{
DisposeCoreProjection();
_state = ManagedProjectionState.Loaded;
}
//TODO: load configuration from the definition
if (_persistedState.SourceDefinition == null)
throw new Exception(
"The projection cannot be loaded as stopped as it was stored in the old format. Update the projection query text to force prepare");
var createProjectionMessage =
new CoreProjectionManagementMessage.CreatePrepared(
new PublishEnvelope(_inputQueue), Id, _name,
new ProjectionVersion(_projectionId, _persistedState.Epoch ?? 0, _persistedState.Version ?? 1),
config, _persistedState.SourceDefinition, HandlerType, Query);
//note: set running before start as coreProjection.start() can respond with faulted
_state = ManagedProjectionState.Preparing;
_coreQueue.Publish(createProjectionMessage);
}
private CoreProjectionManagementMessage.CreatePrepared CreatePreparedMessage(ProjectionConfig config)
{
if (PersistedProjectionState.SourceDefinition == null)
throw new Exception(
"The projection cannot be loaded as stopped as it was stored in the old format. Update the projection query text to force prepare");
var createProjectionMessage = new CoreProjectionManagementMessage.CreatePrepared(
Id,
_workerId,
_name,
new ProjectionVersion(_projectionId, PersistedProjectionState.Epoch ?? 0, PersistedProjectionState.Version ?? 1),
config,
QuerySourcesDefinition.From(PersistedProjectionState.SourceDefinition),
HandlerType,
Query);
return createProjectionMessage;
}