ClickHouse/dbms/src/IO/CompressionSettings.cpp

#include <Interpreters/Settings.h>

#include "CompressionSettings.h"


namespace DB
{

CompressionSettings::CompressionSettings(const Settings & settings)
{
    method = settings.network_compression_method;
    switch (method)
    {
        case CompressionMethod::ZSTD:
            level = settings.network_zstd_compression_level;
            break;
        default:
            level = getDefaultLevel(method);
    }
}

int CompressionSettings::getDefaultLevel(CompressionMethod method)
{
    switch (method)
    {
        case CompressionMethod::LZ4:
            return -1;
        case CompressionMethod::LZ4HC:
            return 0;
        case CompressionMethod::ZSTD:
            return 1;
        default:
            return -1;
    }
}

}