std::string big_endian_string(ulong input, std::size_t size)
{
char * buffer = new char[size];
write_big_endian(input, buffer, size);
std::string output = std::string(buffer, size);
delete buffer;
return output;
}
void save_server(FILE* fp,
const server_base& server, const std::string& id) {
init_versions();
msgpack::sbuffer system_data_buf;
msgpack::pack(&system_data_buf, system_data_container(server, id));
msgpack::sbuffer user_data_buf;
{
core::framework::stream_writer<msgpack::sbuffer> st(user_data_buf);
core::framework::jubatus_packer jp(st);
core::framework::packer packer(jp);
packer.pack_array(2);
uint64_t user_data_version = server.user_data_version();
packer.pack(user_data_version);
server.get_driver()->pack(packer);
}
char header_buf[48];
std::memcpy(header_buf, magic_number, 8);
write_big_endian(format_version, &header_buf[8]);
write_big_endian(jubatus_version_major, &header_buf[16]);
write_big_endian(jubatus_version_minor, &header_buf[20]);
write_big_endian(jubatus_version_maintenance, &header_buf[24]);
// write_big_endian(crc32, &header_buf[28]); // skipped
write_big_endian(static_cast<uint64_t>(system_data_buf.size()),
&header_buf[32]);
write_big_endian(static_cast<uint64_t>(user_data_buf.size()),
&header_buf[40]);
uint32_t crc32 = calc_crc32(header_buf,
system_data_buf.data(), system_data_buf.size(),
user_data_buf.data(), user_data_buf.size());
write_big_endian(crc32, &header_buf[28]);
if (!fwrite_helper(header_buf, sizeof(header_buf), fp)) {
throw std::ios_base::failure("Failed to write header_buf.");
}
if (!fwrite_helper(system_data_buf.data(), system_data_buf.size(), fp)) {
throw std::ios_base::failure("Failed to write system_data_buf.");
}
if (!fwrite_helper(user_data_buf.data(), user_data_buf.size(), fp)) {
throw std::ios_base::failure("Failed to write user_data_buf.");
}
}
