// 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 "olap/calc_delete_bitmap_executor.h"

#include <gen_cpp/olap_file.pb.h>

#include <ostream>

#include "common/config.h"
#include "common/logging.h"
#include "olap/memtable.h"
#include "olap/tablet.h"
#include "util/time.h"

namespace doris {
using namespace ErrorCode;

Status CalcDeleteBitmapToken::submit(TabletSharedPtr tablet, RowsetSharedPtr cur_rowset,
                                     const segment_v2::SegmentSharedPtr& cur_segment,
                                     const std::vector<RowsetSharedPtr>& target_rowsets,
                                     int64_t end_version, DeleteBitmapPtr delete_bitmap,
                                     RowsetWriter* rowset_writer) {
    {
        std::shared_lock rlock(_lock);
        RETURN_IF_ERROR(_status);
    }

    return _thread_token->submit_func([=, this]() {
        auto st = tablet->calc_segment_delete_bitmap(cur_rowset, cur_segment, target_rowsets,
                                                     delete_bitmap, end_version, rowset_writer);
        if (!st.ok()) {
            LOG(WARNING) << "failed to calc segment delete bitmap, tablet_id: "
                         << tablet->tablet_id() << " rowset: " << cur_rowset->rowset_id()
                         << " seg_id: " << cur_segment->id() << " version: " << end_version
                         << " error: " << st;
            std::lock_guard wlock(_lock);
            if (_status.ok()) {
                _status = st;
            }
        }
    });
}

Status CalcDeleteBitmapToken::wait() {
    _thread_token->wait();
    // all tasks complete here, don't need lock;
    return _status;
}

void CalcDeleteBitmapExecutor::init() {
    static_cast<void>(ThreadPoolBuilder("TabletCalcDeleteBitmapThreadPool")
                              .set_min_threads(1)
                              .set_max_threads(config::calc_delete_bitmap_max_thread)
                              .build(&_thread_pool));
}

std::unique_ptr<CalcDeleteBitmapToken> CalcDeleteBitmapExecutor::create_token() {
    return std::make_unique<CalcDeleteBitmapToken>(
            _thread_pool->new_token(ThreadPool::ExecutionMode::CONCURRENT));
}

} // namespace doris