// 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 "exec/scan_node.h"

#include <boost/bind.hpp>

namespace doris {

const string ScanNode::_s_bytes_read_counter = "BytesRead";
const string ScanNode::_s_rows_read_counter = "RowsRead";
const string ScanNode::_s_total_read_timer = "TotalRawReadTime(*)";
const string ScanNode::_s_total_throughput_counter = "TotalReadThroughput";
const string ScanNode::_s_materialize_tuple_timer = "MaterializeTupleTime(*)";
const string ScanNode::_s_per_read_thread_throughput_counter =
    "PerReadThreadRawHdfsThroughput";
const string ScanNode::_s_num_disks_accessed_counter = "NumThread";
const string ScanNode::_s_scan_ranges_complete_counter = "ScanRangesComplete";
const string ScanNode::_s_scanner_thread_counters_prefix = "ScannerThreads";
const string ScanNode::_s_scanner_thread_total_wallclock_time =
    "ScannerThreadsTotalWallClockTime";

const string ScanNode::_s_num_scanner_threads_started ="NumScannerThreadsStarted";

Status ScanNode::prepare(RuntimeState* state) {
    RETURN_IF_ERROR(ExecNode::prepare(state));

    _scanner_thread_counters =
        ADD_THREAD_COUNTERS(runtime_profile(), _s_scanner_thread_counters_prefix);
    _bytes_read_counter =
        ADD_COUNTER(runtime_profile(), _s_bytes_read_counter, TUnit::BYTES);
    _rows_read_counter =
        ADD_COUNTER(runtime_profile(), _s_rows_read_counter, TUnit::UNIT);
    _read_timer = ADD_TIMER(runtime_profile(), _s_total_read_timer);
#ifndef BE_TEST
    _total_throughput_counter = runtime_profile()->add_rate_counter(
                                    _s_total_throughput_counter, _bytes_read_counter);
#endif
    _materialize_tuple_timer = ADD_CHILD_TIMER(runtime_profile(), _s_materialize_tuple_timer,
                               _s_scanner_thread_total_wallclock_time);
    _per_read_thread_throughput_counter = runtime_profile()->add_derived_counter(
            _s_per_read_thread_throughput_counter, TUnit::BYTES_PER_SECOND,
            boost::bind<int64_t>(&RuntimeProfile::units_per_second,
                                 _bytes_read_counter,
                                 _read_timer),
            "");
    _scan_ranges_complete_counter =
        ADD_COUNTER(runtime_profile(), _s_scan_ranges_complete_counter, TUnit::UNIT);
    _num_disks_accessed_counter =
        ADD_COUNTER(runtime_profile(), _s_num_disks_accessed_counter, TUnit::UNIT);

    return Status::OK();
}

}