elog_meta.hpp

#pragma once

#include <vector>
#include <string>
#include <phosphor-logging/elog-errors.hpp>
#include "elog_entry.hpp"

namespace phosphor
{
namespace logging
{
namespace metadata
{

using Metadata = std::string;

namespace associations
{

using Type = void(const std::string&,
                  const std::vector<std::string>&,
                  AssociationList& list);

/** @brief Pull out metadata name and value from the string
 *         <metadata name>=<metadata value>
 *  @param [in] data - metadata key=value entries
 *  @param [out] metadata - map of metadata name:value
 */
inline void parse(const std::vector<std::string>& data,
                  std::map<std::string, std::string>& metadata)
{
    constexpr auto separator = '=';
    for(const auto& entry: data)
    {
        auto pos = entry.find(separator);
        if(std::string::npos != pos)
        {
            auto key = entry.substr(0, entry.find(separator));
            auto value = entry.substr(entry.find(separator) + 1);
            metadata.emplace(std::move(key), std::move(value));
        }
    }
};

/** @brief Build error associations specific to metadata. Specialize this
 *         template for handling a specific type of metadata.
 *  @tparam M - type of metadata
 *  @param [in] match - metadata to be handled
 *  @param [in] data - metadata key=value entries
 *  @param [out] list - list of error association objects
 */
template <typename M>
void build(const std::string& match,
           const std::vector<std::string>& data,
           AssociationList& list) = delete;

// Example template specialization - we don't want to do anything
// for this metadata.
using namespace example::xyz::openbmc_project::Example::Elog;
template <>
inline void build<TestErrorTwo::DEV_ID>(const std::string& match,
                                        const std::vector<std::string>& data,
                                        AssociationList& list)
{
}

} // namespace associations
} // namespace metadata
} // namespace logging
} // namespace phosphor