gelf_appender.hpp

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#pragma once
 
#include <fc/log/appender.hpp>
#include <fc/log/logger.hpp>
#include <fc/time.hpp>
 
#include <regex>
 
namespace fc 
{
  // Log appender that sends log messages in JSON format over UDP
  // https://www.graylog2.org/resources/gelf/specification
  class gelf_appender final : public appender 
  {
  public:
    struct config 
    {
      static const std::vector<std::string> reserved_field_names;
      static const std::regex user_field_name_pattern;
      string endpoint = "127.0.0.1:12201";
      string host = "fc"; // the name of the host, source or application that sent this message (just passed through to GELF server)
      variant_object user_fields = {};
    };
 
    gelf_appender(const variant& args);
    ~gelf_appender();
    void initialize(boost::asio::io_service& io_service) override;
    virtual void log(const log_message& m) override;
 
  private:
    class impl;
    std::shared_ptr<impl> my;
  };
} // namespace fc
 
#include <fc/reflect/reflect.hpp>
FC_REFLECT(fc::gelf_appender::config,
           (endpoint)(host)(user_fields))