public BatchOperation(IStoreBatchProgress store, ReadModelGenerationConfig config)
{
_store = store;
_config = config;
_processed = _store.StartOrContinue(config.Name);
EventStore.Logger.Debug($"'{config.Name}' [read model generation] starts/resumes after {_processed.Value} commits");
}
public void GenerateReadModel(string operationName, Action <dynamic> modelUpdater, Action <IConfigReadModelGeneration> config = null)
{
operationName.MustNotBeEmpty();
var conf = new ReadModelGenerationConfig(operationName);
config?.Invoke(conf);
void HandleCommit(Commit commit, Action <dynamic> updater)
{
var evs = Utils.UnpackEvents(commit.Timestamp, commit.EventData, _settings.EventMappers);
foreach (var ev in evs)
{
EventStore.Logger.Debug("Updating readmodel from {@event}", ev);
updater((dynamic)ev);
}
}
using (var operation = new BatchOperation(_store, conf))
{
Optional <Commit> commit;
do
{
commit = operation.GetNextCommit();
if (commit.HasValue)
{
HandleCommit(commit.Value, modelUpdater);
}
} while (commit.HasValue);
}
}