#pragma once #include #include #include #include #include #include /// Writes to Graphite in the following format /// path value timestamp\n /// path can be arbitrary nested. Elements are separated by '.' /// Example: root_path.server_name.sub_path.key class GraphiteWriter { public: GraphiteWriter(const std::string & config_name, const std::string & sub_path = ""); template using KeyValuePair = std::pair; template using KeyValueVector = std::vector>; template void write(const std::string & key, const T & value, time_t timestamp = 0, const std::string & custom_root_path = "") { writeImpl(KeyValuePair{ key, value }, timestamp, custom_root_path); } template void write(const KeyValueVector & key_val_vec, time_t timestamp = 0, const std::string & custom_root_path = "") { writeImpl(key_val_vec, timestamp, custom_root_path); } private: template void writeImpl(const T & data, time_t timestamp, const std::string & custom_root_path) { if (!timestamp) timestamp = time(nullptr); try { Poco::Net::SocketAddress socket_address(host, port); Poco::Net::StreamSocket socket(socket_address); socket.setSendTimeout(Poco::Timespan(static_cast(timeout * 1000000))); Poco::Net::SocketStream str(socket); out(str, data, timestamp, custom_root_path); } catch (const Poco::Exception & e) { LOG_WARNING(&Poco::Util::Application::instance().logger(), "Fail to write to Graphite {}:{}. e.what() = {}, e.message() = {}", host, port, e.what(), e.message()); } } template void out(std::ostream & os, const KeyValuePair & key_val, time_t timestamp, const std::string & custom_root_path) { os << (custom_root_path.empty() ? root_path : custom_root_path) << '.' << key_val.first << ' ' << key_val.second << ' ' << timestamp << '\n'; } template void out(std::ostream & os, const KeyValueVector & key_val_vec, time_t timestamp, const std::string & custom_root_path) { for (const auto & key_val : key_val_vec) out(os, key_val, timestamp, custom_root_path); } std::string root_path; int port; std::string host; double timeout; };