Function writeEvent

src/Server/PrometheusMetricsWriter.cpp:80–97

constexpr auto dimensional_metrics_prefix = "ClickHouseDimensionalMetrics_";

void writeEvent(DB::WriteBuffer & wb, ProfileEvents::Event event)
{
    const auto counter = ProfileEvents::global_counters[event].load(std::memory_order_relaxed);

    std::string metric_name{ProfileEvents::getName(static_cast<ProfileEvents::Event>(event))};
    std::string metric_doc{ProfileEvents::getDocumentation(static_cast<ProfileEvents::Event>(event))};

    convertHelpToSingleLine(metric_doc);

    if (!replaceInvalidChars(metric_name))
        return;

    std::string key{profile_events_prefix + metric_name};

    writeOutLine(wb, "# HELP", key, metric_doc);
    writeOutLine(wb, "# TYPE", key, "counter");
    writeOutLine(wb, key, counter);
}

void writeMetric(DB::WriteBuffer & wb, size_t metric)
{