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#pragma once
#include <IO/WriteBuffer.h>
namespace DB
{
namespace ErrorCodes
{
}
/** ForkWriteBuffer takes a vector of WriteBuffer and writes data to all of them
* If the vector of WriteBufferPts is empty, then it throws an error
* It uses the buffer of the first element as its buffer and copies data from
* first buffer to all the other buffers
**/
class ForkWriteBuffer : public WriteBuffer
{
public:
using WriteBufferPtrs = std::vector<WriteBufferPtr>;
explicit ForkWriteBuffer(WriteBufferPtrs && sources_);
~ForkWriteBuffer() override;
protected:
void nextImpl() override;
void finalizeImpl() override;
private:
WriteBufferPtrs sources;
};
}
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