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mysql_monitor.cpp
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139 lines (108 loc) · 3.34 KB
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#include "stdafx.h"
#include "mysql_monitor.h"
#include "mysql_parser.h"
namespace sql_proxy
{
constexpr size_t mysql_packet_header_size = 4;
mysql_monitor::mysql_monitor(boost::asio::io_service& io_service)
:
io_service_(io_service),
strand_(io_service)
{
}
void mysql_monitor::on_connect() const
{
}
void mysql_monitor::on_downstream_read(bytes_t data)
{
std::lock_guard<std::mutex> downstream_read_lock(downstream_read_mutex_);
on_read(data, packet_origin::downstream);
}
void mysql_monitor::on_upstream_read(bytes_t data)
{
std::lock_guard<std::mutex> upstream_read_lock(upstream_read_mutex_);
on_read(data, packet_origin::upstream);
}
void mysql_monitor::dump_data(const bytes_t & data, packet_origin direction)
{
std::lock_guard<std::mutex> dump_lock(dump_mutex_);
strand_.post([this, data, direction]()
{
static constexpr size_t half_row_size = std::size_t{ 8 };
static constexpr size_t row_size = half_row_size * 2;
std::string out;
out.reserve((data.size() / row_size + 10) * 80);
out += mysql_parser_.parse_packet(data, direction);
out += "\n=== DUMP BEGIN ===\n";
switch (direction)
{
case packet_origin::downstream:
out += "Direction: downstream (client -> server)\n";
break;
case packet_origin::upstream:
out += "Direction: upstream (server -> client)\n";
break;
}
out += "Packet size: " + std::to_string(data.size()) + "\n\n";
uint16_t counter = 0;
size_t i = 0;
while (i < data.size())
{
auto v_size = std::min(i + row_size, data.size());
std::vector<byte_t> row{ data.cbegin() + i, data.cbegin() + v_size };
out += to_hex_string(counter) + " ";
for (size_t row_i = 0; row_i < row_size; ++row_i)
{
if (row_i < row.size())
{
out += to_hex_string(row[row_i]) + std::string(" ");
}
else
{
out += " ";
}
if (row_i == half_row_size - 1)
{
out += " ";
}
}
out += ' ';
auto to_printable = [](const byte_t b) -> char
{
if (b >= ' ' && b < 127)
{
return b;
}
else
{
return '.';
}
};
for (size_t row_i = 0; row_i < row.size(); ++row_i)
{
out += to_printable(row[row_i]);
if (row_i == half_row_size - 1)
{
out += ' ';
}
}
out += '\n';
i += row_size;
counter += row_size;
}
out += "=== DUMP END ===\n\n---\n";
{
std::lock_guard<std::mutex> lock_cout(cout_mutex_);
std::cout << out;
}
});
}
void mysql_monitor::on_read(const bytes_t & data, packet_origin direction)
{
//strand_.post([this](){
// std::lock_guard<std::mutex> lock_cout(cout_mutex_);
// std::cout << "!!!!!!!!!! on_read" << std::endl;
//});
dump_data(data, direction);
}
}