public DbSnapshot(DB db, long height, bool bUndo)
{
Monitor.Enter(db);
this.db = db;
this.snapshot = db.CreateSnapshot();
this.batch = new WriteBatch();
this.options = new ReadOptions {
FillCache = false, Snapshot = snapshot
};
if (bUndo)
{
Undos = new DbUndo();
Undos.height = height;
long.TryParse(db.Get("UndoHeight"), out long UndoHeight);
if (UndoHeight + 1 != Undos.height)
{
throw new InvalidOperationException($"{UndoHeight} heightTotal+1 != Undos.height {Undos.height}");
}
}
Snap = new DbCache <string>(db, options, batch, Undos, "Snap");
Blocks = new DbCache <Block>(db, options, batch, null, "Blocks");
Heights = new DbCache <List <string> >(db, options, batch, null, "Heights");
Transfers = new DbCache <BlockSub>(db, options, batch, Undos, "Trans");
Accounts = new DbCache <Account>(db, options, batch, Undos, "Accounts");
Contracts = new DbCache <LuaVMScript>(db, options, batch, Undos, "Contracts");
Storages = new DbCache <LuaVMContext>(db, options, batch, Undos, "Storages");
BlockChains = new DbCache <BlockChain>(db, options, batch, Undos, "BlockChain");
StoragesAccount = new DbCache <string>(db, options, batch, Undos, "StgAcc");
ABC = new DbCache <List <string> >(db, options, batch, Undos, "ABC");
List = new DbList <string>(db, options, batch, Undos, "List");
}
public DbCacheSerializable(DB db, ReadOptions options, WriteBatch batch, DbUndo undos, string prefix)
{
this.db = db;
this.options = options ?? DbSnapshot.ReadOptions_Default;
this.batch = batch;
this.prefix = prefix;
this.undos = undos;
}
public DbList(DB db, ReadOptions options, WriteBatch batch, DbUndo undos, string prefix)
{
this.db = db;
this.options = options ?? DbSnapshot.ReadOptions_Default;
this.batch = batch;
this.prefix = prefix;
this.undos = undos;
this.isString = typeof(TValue).Name == "String";
}
// ------------------------------------------
public void UndoTransfers(long height)
{
height = Math.Max(height, 1);
long.TryParse(Get("UndoHeight"), out long height_total);
if (height == height_total)
{
return;
}
Log.Debug($"UndoTransfers {height_total} to {height}");
WriteBatch batch = new WriteBatch();
long ii = height_total;
for ( ; ii > height; ii--)
{
string Undos_Value = db.Get($"Undos___{ii}");
if (Undos_Value != null)
{
DbUndo undos = JsonHelper.FromJson <DbCache <DbUndo> .Slice>(Undos_Value).obj;
for (int jj = 0; jj < undos.keys.Count; jj++)
{
string key = $"{undos.keys[jj]}_undo_{undos.height}";
string value = db.Get(key);
if (value != null && value != "")
{
batch.Put(undos.keys[jj], value);
}
else
{
batch.Delete(undos.keys[jj]);
}
batch.Delete(key);
}
batch.Delete($"Undos___{ii}");
}
else
{
break;
}
}
batch.Put("UndoHeight", System.Math.Min(ii, height_total).ToString());
db.Write(batch, new WriteOptions {
Sync = true
});
batch?.Dispose();
Entity.Root.GetComponent <Consensus>()?.cacheRule.Clear();
}
