rocksdb/db/event_logger_helpers.cc

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// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
#include "db/event_logger_helpers.h"
namespace rocksdb {
namespace {
inline double SafeDivide(double a, double b) { return b == 0.0 ? 0 : a / b; }
} // namespace
void EventLoggerHelpers::AppendCurrentTime(JSONWriter* jwriter) {
*jwriter << "time_micros"
<< std::chrono::duration_cast<std::chrono::microseconds>(
std::chrono::system_clock::now().time_since_epoch()).count();
}
void EventLoggerHelpers::LogTableFileCreation(
EventLogger* event_logger, int job_id, uint64_t file_number,
uint64_t file_size, const TableProperties& table_properties) {
JSONWriter jwriter;
AppendCurrentTime(&jwriter);
jwriter << "job" << job_id
<< "event" << "table_file_creation"
<< "file_number" << file_number
<< "file_size" << file_size;
// table_properties
{
jwriter << "table_properties";
jwriter.StartObject();
// basic properties:
jwriter << "data_size" << table_properties.data_size
<< "index_size" << table_properties.index_size
<< "filter_size" << table_properties.filter_size
<< "raw_key_size" << table_properties.raw_key_size
<< "raw_average_key_size" << SafeDivide(
table_properties.raw_key_size,
table_properties.num_entries)
<< "raw_value_size" << table_properties.raw_value_size
<< "raw_average_value_size" << SafeDivide(
table_properties.raw_value_size, table_properties.num_entries)
<< "num_data_blocks" << table_properties.num_data_blocks
<< "num_entries" << table_properties.num_entries
<< "filter_policy_name" << table_properties.filter_policy_name;
// user collected properties
for (const auto& prop : table_properties.user_collected_properties) {
jwriter << prop.first << prop.second;
}
jwriter.EndObject();
}
jwriter.EndObject();
event_logger->Log(jwriter);
}
} // namespace rocksdb