public override Serialize.ByteBuffer Get(long txnId, Serialize.ByteBuffer key)
{
int outValueBufferLen = 64 * 1024;
while (true)
{
using var _key = new GoSlice(key.Bytes, key.ReadIndex, key.Size);
using var error = new GoSlice(1024);
using var outvalue = new GoSlice(outValueBufferLen);
long rc = Get(txnId, _key, outvalue, error);
if (rc < 0)
{
var str = GetErrorString(rc, error);
if (str.Equals("key not exist")) // 这是tikv clieng.go 返回的错误。
{
return(null);
}
if (str.Equals("ZezeSpecialError: value is nil."))
{
return(null);
}
var strBufferNotEnough = "ZezeSpecialError: outvalue buffer not enough. BufferNeed=";
if (str.StartsWith(strBufferNotEnough))
{
outValueBufferLen = int.Parse(str.Substring(strBufferNotEnough.Length));
continue;
}
throw new Exception(str);
}
byte[] rcvalue = new byte[rc];
Marshal.Copy(outvalue.Data, rcvalue, 0, rcvalue.Length);
return(Serialize.ByteBuffer.Wrap(rcvalue));
}
}
public override void Delete(long txnId, Serialize.ByteBuffer key)
{
using var _key = new GoSlice(key.Bytes, key.ReadIndex, key.Size);
using var error = new GoSlice(1024);
long rc = Delete(txnId, _key, error);
if (rc < 0)
{
throw new Exception(GetErrorString(rc, error));
}
}
public override void Put(long txnId, Serialize.ByteBuffer key, Serialize.ByteBuffer value)
{
using var _key = new GoSlice(key.Bytes, key.ReadIndex, key.Size);
using var _value = new GoSlice(value.Bytes, value.ReadIndex, value.Size);
using var error = new GoSlice(1024);
long rc = Put(txnId, _key, _value, error);
if (rc < 0)
{
throw new Exception(GetErrorString(rc, error));
}
}
internal void AppendInputBuffer(long socketSessionId, Zeze.Serialize.ByteBuffer buffer)
{
lock (this)
{
if (ToBuffer.TryGetValue(socketSessionId, out var exist))
{
exist.Append(buffer.Bytes, buffer.ReadIndex, buffer.Size);
return;
}
Serialize.ByteBuffer newBuffer = Serialize.ByteBuffer.Allocate();
ToBuffer.Add(socketSessionId, newBuffer);
newBuffer.Append(buffer.Bytes, buffer.ReadIndex, buffer.Size);
}
}
public override long Scan(long txnId, Serialize.ByteBuffer keyprefix, Func <byte[], byte[], bool> callback)
{
using var _keyprefix = new GoSlice(keyprefix.Bytes, keyprefix.ReadIndex, keyprefix.Size);
using var error = new GoSlice(1024);
long rc = Scan(txnId, _keyprefix,
new Walker(
(key, keylen, value, valuelen) =>
{
var _key = new byte[keylen];
var _value = new byte[valuelen];
Marshal.Copy(key, _key, 0, _key.Length);
Marshal.Copy(value, _value, 0, _value.Length);
return(callback(_key, _value) ? 0 : -1);
}),
error);
if (rc < 0)
{
throw new Exception(GetErrorString(rc, error));
}
return(rc);
}
public BufferCodec(Serialize.ByteBuffer buffer)
{
Buffer = buffer;
}
public abstract long Scan(long txnId, Serialize.ByteBuffer keyprefix, Func <byte[], byte[], bool> callback);
public abstract void Delete(long txnId, Serialize.ByteBuffer key);
public abstract Serialize.ByteBuffer Get(long txnId, Serialize.ByteBuffer key);
public abstract void Put(long txnId, Serialize.ByteBuffer key, Serialize.ByteBuffer value);
