internal static DataStoreRequest Create(string journalName, Offset offset, Offset journalSize,
RequestUID requestUID, WorkerUID workerUID)
{
var request = new ReadJournalRequest(journalName, offset, journalSize);
var header = new Header(RequestType.READ_JOURNAL, request.SizeOf, requestUID, HeaderProperties.None,
workerUID);
return new DataStoreRequest(header, request);
}
/// <summary>
///
/// </summary>
/// <param name="request"></param>
/// <param name="body"></param>
private void ProcessReadJournalRequest(DataStoreRequest request, ReadJournalRequest body)
{
var snapshot = snapshotManager.FlatSelect((manager) => { return manager.LoadSnapshot(body.JournalName); });
if (snapshot.IsDefined)
{
var promise = mapper.RemoveAndGet(request.Header.RequestUID);
var entry = snapshot.Value;
// TODO: Read any events left from the server (if new events is available)
var result = new DataStoreResponse(request.Header,
new ReadJournalSnapshotResponse(entry.JournalSize, entry.Events));
promise.Success(result);
}
else
{
request.Write(writer);
writer.Flush();
}
}