// 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 "storage/rowset/pending_rowset_helper.h"

#include "storage/olap_common.h"

namespace doris {

PendingRowsetGuard::~PendingRowsetGuard() {

    if (_pending_rowset_set) {

        for (const auto& rowset_id : _rowset_ids) {

            _pending_rowset_set->remove(rowset_id);

        }

    }

}

PendingRowsetGuard::PendingRowsetGuard(const std::vector<RowsetId>& rowset_ids,

                                       PendingRowsetSet* set)

        : _rowset_ids(rowset_ids), _pending_rowset_set(set) {}

PendingRowsetGuard::PendingRowsetGuard(PendingRowsetGuard&& other) noexcept {

    CHECK(!_pending_rowset_set ||

          (_rowset_ids == other._rowset_ids && _pending_rowset_set == other._pending_rowset_set))

            << _rowset_ids.size() << ' ' << other._rowset_ids.size() << ' ' << _pending_rowset_set

            << ' ' << other._pending_rowset_set;

    _rowset_ids = other._rowset_ids;

    _pending_rowset_set = other._pending_rowset_set;

    other._pending_rowset_set = nullptr;

}

PendingRowsetGuard& PendingRowsetGuard::operator=(PendingRowsetGuard&& other) noexcept {

    CHECK(!_pending_rowset_set ||

          (_rowset_ids == other._rowset_ids && _pending_rowset_set == other._pending_rowset_set))

            << _rowset_ids.size() << ' ' << other._rowset_ids.size() << ' ' << _pending_rowset_set

            << ' ' << other._pending_rowset_set;

    _rowset_ids = other._rowset_ids;

    _pending_rowset_set = other._pending_rowset_set;

    other._pending_rowset_set = nullptr;

    return *this;

}

void PendingRowsetGuard::drop() {

    if (_pending_rowset_set) {

        for (const auto& rowset_id : _rowset_ids) {

            _pending_rowset_set->remove(rowset_id);

        }

    }

    _pending_rowset_set = nullptr;

    _rowset_ids = std::vector {RowsetId {}};

}

bool PendingRowsetSet::contains(const RowsetId& rowset_id) {

    std::lock_guard lock(_mtx);

    return _set.contains(rowset_id);

}

PendingRowsetGuard PendingRowsetSet::add(const RowsetId& rowset_id) {

    {

        std::lock_guard lock(_mtx);

        _set.insert(rowset_id);

    }

    return PendingRowsetGuard {std::vector<RowsetId> {rowset_id}, this};

}

PendingRowsetGuard PendingRowsetSet::add(const std::vector<RowsetId>& rowset_ids) {

    {

        std::lock_guard lock(_mtx);

        for (const auto& rowset_id : rowset_ids) {

            _set.insert(rowset_id);

        }

    }

    return PendingRowsetGuard {rowset_ids, this};

}

void PendingRowsetSet::remove(const RowsetId& rowset_id) {

    std::lock_guard lock(_mtx);

    _set.erase(rowset_id);

}

} // namespace doris