// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you under the Apache License, Version 2.0 (the

// "License"); you may not use this file except in compliance

// with the License.  You may obtain a copy of the License at

//

//   http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing,

// software distributed under the License is distributed on an

// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, either express or implied.  See the License for the

// specific language governing permissions and limitations

// under the License.

#include "runtime/query_statistics.h"

#include <gen_cpp/data.pb.h>

#include <glog/logging.h>

#include <memory>

#include "util/time.h"

namespace doris {

void QueryStatistics::merge(const QueryStatistics& other) {

    scan_rows += other.scan_rows.load(std::memory_order_relaxed);

    scan_bytes += other.scan_bytes.load(std::memory_order_relaxed);

    cpu_nanos += other.cpu_nanos.load(std::memory_order_relaxed);

    shuffle_send_bytes += other.shuffle_send_bytes.load(std::memory_order_relaxed);

    shuffle_send_rows += other.shuffle_send_rows.load(std::memory_order_relaxed);

    int64_t other_peak_mem = other.max_peak_memory_bytes.load(std::memory_order_relaxed);

    if (other_peak_mem > this->max_peak_memory_bytes) {

        this->max_peak_memory_bytes = other_peak_mem;

    }

    int64_t other_memory_used = other.current_used_memory_bytes.load(std::memory_order_relaxed);

    if (other_memory_used > 0) {

        this->current_used_memory_bytes = other_memory_used;

    }

}

void QueryStatistics::to_pb(PQueryStatistics* statistics) {

    DCHECK(statistics != nullptr);

    statistics->set_scan_rows(scan_rows);

    statistics->set_scan_bytes(scan_bytes);

    statistics->set_cpu_ms(cpu_nanos / NANOS_PER_MILLIS);

    statistics->set_returned_rows(returned_rows);

    statistics->set_max_peak_memory_bytes(max_peak_memory_bytes);

}

void QueryStatistics::to_thrift(TQueryStatistics* statistics) const {

    DCHECK(statistics != nullptr);

    statistics->__set_scan_bytes(scan_bytes.load(std::memory_order_relaxed));

    statistics->__set_scan_rows(scan_rows.load(std::memory_order_relaxed));

    statistics->__set_cpu_ms(cpu_nanos.load(std::memory_order_relaxed) / NANOS_PER_MILLIS);

    statistics->__set_returned_rows(returned_rows);

    statistics->__set_max_peak_memory_bytes(max_peak_memory_bytes.load(std::memory_order_relaxed));

    statistics->__set_current_used_memory_bytes(

            current_used_memory_bytes.load(std::memory_order_relaxed));

    statistics->__set_shuffle_send_bytes(shuffle_send_bytes.load(std::memory_order_relaxed));

    statistics->__set_shuffle_send_rows(shuffle_send_rows.load(std::memory_order_relaxed));

}

void QueryStatistics::from_pb(const PQueryStatistics& statistics) {

    scan_rows = statistics.scan_rows();

    scan_bytes = statistics.scan_bytes();

    cpu_nanos = statistics.cpu_ms() * NANOS_PER_MILLIS;

}

void QueryStatistics::merge(QueryStatisticsRecvr* recvr) {

    recvr->merge(this);

}

void QueryStatistics::merge(QueryStatisticsRecvr* recvr, int sender_id) {

    DCHECK(recvr != nullptr);

    auto QueryStatisticsptr = recvr->find(sender_id);

    if (QueryStatisticsptr) {

        merge(*QueryStatisticsptr);

    }

}

QueryStatistics::~QueryStatistics() {}

void QueryStatisticsRecvr::insert(const PQueryStatistics& statistics, int sender_id) {

    std::lock_guard<std::mutex> l(_lock);

    if (!_query_statistics.contains(sender_id)) {

        _query_statistics[sender_id] = std::make_shared<QueryStatistics>();

    }

    _query_statistics[sender_id]->from_pb(statistics);

}

void QueryStatisticsRecvr::insert(QueryStatisticsPtr statistics, int sender_id) {

    if (!statistics->collected()) return;

    if (_query_statistics.contains(sender_id)) return;

    std::lock_guard<std::mutex> l(_lock);

    _query_statistics[sender_id] = statistics;

}

QueryStatisticsPtr QueryStatisticsRecvr::find(int sender_id) {

    std::lock_guard<std::mutex> l(_lock);

    auto it = _query_statistics.find(sender_id);

    if (it != _query_statistics.end()) {

        return it->second;

    }

    return nullptr;

}

} // namespace doris