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#pragma once
#include <Processors/Formats/Impl/JSONEachRowRowOutputFormat.h>
#include <mutex>
namespace DB
{
class JSONEachRowWithProgressRowOutputFormat final : public JSONEachRowRowOutputFormat
{
public:
using JSONEachRowRowOutputFormat::JSONEachRowRowOutputFormat;
void onProgress(const Progress & value) override;
void flush() override;
private:
void writeRowStartDelimiter() override;
void writeRowEndDelimiter() override;
void writeSuffix() override;
void writeProgress();
Progress progress;
std::vector<String> progress_lines;
std::mutex progress_lines_mutex;
/// To not lock mutex and check progress_lines every row,
/// we will use atomic flag that progress_lines is not empty.
std::atomic_bool has_progress = false;
};
}
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