public Engine(Shard shard, string path, string walPath)
{
this.shard = shard;
this.path = path;
wal = new Wal(walPath);
fileStore = new FileStore(path);
cache = new Cache(Constants.DefaultCacheMaxMemorySize);
compactor = new Compactor(fileStore, path);
compactionPlan = new DefaultPlanner(fileStore, Constants.DefaultCompactFullWriteColdDuration);
enableCompactionsOnOpen = true;
stats = new EngineStatistics();
}
// reloadCache reads the WAL segment files and loads them into the cache.
private void reloadCache()
{
DateTime now = DateTime.Now;
List <string> files = Wal.SegmentFileNames(wal.Path);
if (files != null && files.Count > 0)
{
long maxsize = cache.MaxSize;
cache.MaxSize = 0;//Disable the max size during loading
cache.Load(files);
cache.MaxSize = maxsize;
Logger.Write(string.Format("Reloaded WAL cache {0} in {1} ms", wal.Path, (DateTime.Now - now).TotalMilliseconds));
}
}