YugabyteDB (2.13.0.0-b42, bfc6a6643e7399ac8a0e81d06a3ee6d6571b33ab)

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// The following only applies to changes made to this file as part of YugaByte development.

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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except

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#include "yb/server/glog_metrics.h"

#include <glog/logging.h>

#include "yb/util/metrics.h"

METRIC_DEFINE_counter(server, glog_info_messages,

                      "INFO-level Log Messages", yb::MetricUnit::kMessages,

                      "Number of INFO-level log messages emitted by the application.");

METRIC_DEFINE_counter(server, glog_warning_messages,

                      "WARNING-level Log Messages", yb::MetricUnit::kMessages,

                      "Number of WARNING-level log messages emitted by the application.");

METRIC_DEFINE_counter(server, glog_error_messages,

                      "ERROR-level Log Messages", yb::MetricUnit::kMessages,

                      "Number of ERROR-level log messages emitted by the application.");

namespace yb {

class MetricsSink : public google::LogSink {

 public:

  explicit MetricsSink(const scoped_refptr<MetricEntity>& entity) :

    info_counter_(METRIC_glog_info_messages.Instantiate(entity)),

    warning_counter_(METRIC_glog_warning_messages.Instantiate(entity)),

    error_counter_(METRIC_glog_error_messages.Instantiate(entity)) {

  }

  virtual void send(google::LogSeverity severity, const char* full_filename,

                    const char* base_filename, int line,

                    const struct ::tm* tm_time,

                    const char* message, size_t message_len) override {

    Counter* c;

    switch (severity) {

      case google::INFO:

        c = info_counter_.get();

        break;

      case google::WARNING:

        c = warning_counter_.get();

        break;

      case google::ERROR:

        c = error_counter_.get();

        break;

      default:

        return;

    }

    c->Increment();

  }

 private:

  scoped_refptr<Counter> info_counter_;

  scoped_refptr<Counter> warning_counter_;

  scoped_refptr<Counter> error_counter_;

};

ScopedGLogMetrics::ScopedGLogMetrics(const scoped_refptr<MetricEntity>& entity)

  : sink_(new MetricsSink(entity)) {

  google::AddLogSink(sink_.get());

}

ScopedGLogMetrics::~ScopedGLogMetrics() {

  google::RemoveLogSink(sink_.get());

}

} // namespace yb