private void InitFirstBlock(DBCreateOption createOption)
{
//数据库需要初始化
if (createOption == null)
{
this.Close();
throw new Exception("数据库需要初始化 open(path,createOption)");
}
else
{
var writetask = new WriteTask();
writetask.CreateTable(new TableInfo(systemtable_info, "_table_info", null, DBValue.Type.String));
writetask.CreateTable(new TableInfo(systemtable_block, "_table_block", null, DBValue.Type.UINT64));
if (createOption.FirstTask != null)
{
foreach (var t in createOption.FirstTask.items)
{
writetask.items.Add(t);
}
}
writetask.Put(systemtable_info, "_magic_".ToBytes_UTF8Encode(), DBValue.FromValue(DBValue.Type.String, createOption.MagicStr));
this.WriteUnsafe(writetask, createOption.afterparser);
}
}
public void Open(string path, DBCreateOption createOption = null)
{
if (dbPtr != IntPtr.Zero)
{
throw new Exception("already open a db.");
}
this.defaultWriteOpPtr = RocksDbSharp.Native.Instance.rocksdb_writeoptions_create();
var HandleOption = RocksDbSharp.Native.Instance.rocksdb_options_create();
if (createOption != null)
{
RocksDbSharp.Native.Instance.rocksdb_options_set_create_if_missing(HandleOption, true);
}
RocksDbSharp.Native.Instance.rocksdb_options_set_compression(HandleOption, RocksDbSharp.CompressionTypeEnum.rocksdb_snappy_compression);
//RocksDbSharp.DbOptions option = new RocksDbSharp.DbOptions();
//option.SetCreateIfMissing(true);
//option.SetCompression(RocksDbSharp.CompressionTypeEnum.rocksdb_snappy_compression);
IntPtr handleDB = RocksDbSharp.Native.Instance.rocksdb_open(HandleOption, path);
this.dbPtr = handleDB;
snapshotLast = CreateSnapInfo();
if (snapshotLast.DataHeight == 0)
{
InitFirstBlock(createOption);
}
snapshotLast.AddRef();
}
public void Init()
{
Console.CursorLeft = 0;
Console.WriteLine(" == Open DB ==");
maindb = new LightDB.LightDB();
state_DBOpen = false;
string fullpath = System.IO.Path.GetFullPath(Program.config.server_storage_path);
if (System.IO.Directory.Exists(fullpath) == false)
{
System.IO.Directory.CreateDirectory(fullpath);
}
string pathDB = System.IO.Path.Combine(fullpath, "maindb");
try
{
maindb.Open(pathDB);
state_DBOpen = true;
Console.WriteLine("db opened in:" + pathDB);
}
catch (Exception err)
{
Console.WriteLine("error msg:" + err.Message);
}
if (state_DBOpen == false)
{
Console.WriteLine("open database fail. try to create it.");
try
{
LightDB.DBCreateOption createop = new LightDB.DBCreateOption();
createop.MagicStr = Program.config.storage_maindb_magic;
createop.FirstTask = new LightDB.WriteTask();
createop.FirstTask.CreateTable(new LightDB.TableInfo(tableID_Writer, "_writeraddress_", "", LightDB.DBValue.Type.String));
createop.FirstTask.Put(tableID_Writer, Program.config.storage_maindb_firstwriter_address.ToBytes_UTF8Encode(), LightDB.DBValue.FromValue(LightDB.DBValue.Type.BOOL, true));
maindb.Open(pathDB, createop);
Console.WriteLine("db created in:" + pathDB);
state_DBOpen = true;
}
catch (Exception err)
{
Console.WriteLine("error msg:" + err.Message);
}
}
}
public void Open(string path, DBCreateOption createOption = null)
{
if (db != null)
{
throw new Exception("already open a db.");
}
this.defaultWriteOpPtr = RocksDbSharp.Native.Instance.rocksdb_writeoptions_create();
RocksDbSharp.DbOptions option = new RocksDbSharp.DbOptions();
option.SetCreateIfMissing(true);
option.SetCompression(RocksDbSharp.CompressionTypeEnum.rocksdb_snappy_compression);
this.db = RocksDbSharp.RocksDb.Open(option, path);
snapshotLast = CreateSnapInfo();
if (snapshotLast.DataHeight == 0)
{
InitFirstBlock(createOption);
}
snapshotLast.AddRef();
}
private void InitFirstBlock(DBCreateOption createOption)
{
//数据库需要初始化
if (createOption == null)
{
this.Close();
throw new Exception("数据库需要初始化 open(path,createOption)");
}
else
{
var writetask = new WriteTask();
writetask.CreateTable(new TableInfo(systemtable_info, "_table_info", null, DBValue.Type.String));
writetask.CreateTable(new TableInfo(systemtable_block, "_table_block", null, DBValue.Type.UINT64));
if (createOption.FirstTask != null)
{
foreach (var t in createOption.FirstTask.items)
{
writetask.items.Add(t);
}
}
this.WriteUnsafe(writetask);
}
}
