mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-24 00:22:29 +00:00
49 lines
1.0 KiB
C++
49 lines
1.0 KiB
C++
#pragma once
|
||
|
||
#include <Poco/Net/Socket.h>
|
||
|
||
#include <DB/Core/Exception.h>
|
||
#include <DB/Core/ErrorCodes.h>
|
||
|
||
#include <DB/IO/WriteBuffer.h>
|
||
#include <DB/IO/BufferWithOwnMemory.h>
|
||
|
||
|
||
namespace DB
|
||
{
|
||
|
||
/** Работает с готовым Poco::Net::Socket. Операции блокирующие.
|
||
*/
|
||
class WriteBufferFromPocoSocket : public BufferWithOwnMemory<WriteBuffer>
|
||
{
|
||
protected:
|
||
Poco::Net::Socket & socket;
|
||
|
||
void nextImpl()
|
||
{
|
||
if (!offset())
|
||
return;
|
||
|
||
size_t bytes_written = 0;
|
||
while (bytes_written != offset())
|
||
{
|
||
ssize_t res = socket.impl()->sendBytes(working_buffer.begin() + bytes_written, offset() - bytes_written);
|
||
if (res < 0)
|
||
throw Exception("Cannot write to socket", ErrorCodes::CANNOT_WRITE_TO_SOCKET);
|
||
bytes_written += res;
|
||
}
|
||
}
|
||
|
||
public:
|
||
WriteBufferFromPocoSocket(Poco::Net::Socket & socket_, size_t buf_size = DBMS_DEFAULT_BUFFER_SIZE)
|
||
: BufferWithOwnMemory<WriteBuffer>(buf_size), socket(socket_) {}
|
||
|
||
~WriteBufferFromPocoSocket()
|
||
{
|
||
if (!std::uncaught_exception())
|
||
next();
|
||
}
|
||
};
|
||
|
||
}
|