// 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 "cloud/cloud_compaction_stop_token.h"

#include <gen_cpp/cloud.pb.h>

#include "cloud/cloud_meta_mgr.h"

#include "cloud/config.h"

#include "common/logging.h"

namespace doris {

CloudCompactionStopToken::CloudCompactionStopToken(CloudStorageEngine& engine,

                                                   CloudTabletSPtr tablet, int64_t initiator)

        : _engine {engine}, _tablet {std::move(tablet)}, _initiator(initiator) {

    auto uuid = UUIDGenerator::instance()->next_uuid();

    std::stringstream ss;

    ss << uuid;

    _uuid = ss.str();

}

void CloudCompactionStopToken::do_lease() {

    cloud::TabletJobInfoPB job;

    auto* idx = job.mutable_idx();

    idx->set_tablet_id(_tablet->tablet_id());

    idx->set_table_id(_tablet->table_id());

    idx->set_index_id(_tablet->index_id());

    idx->set_partition_id(_tablet->partition_id());

    auto* compaction_job = job.add_compaction();

    compaction_job->set_id(_uuid);

    using namespace std::chrono;

    int64_t lease_time = duration_cast<seconds>(system_clock::now().time_since_epoch()).count() +

                         (config::lease_compaction_interval_seconds * 4);

    compaction_job->set_lease(lease_time);

    auto st = _engine.meta_mgr().lease_tablet_job(job);

    if (!st.ok()) {

        LOG_WARNING("failed to lease compaction stop token")

                .tag("job_id", _uuid)

                .tag("delete_bitmap_lock_initiator", _initiator)

                .tag("tablet_id", _tablet->tablet_id())

                .error(st);

    }

}

Status CloudCompactionStopToken::do_register() {

    int64_t base_compaction_cnt = 0;

    int64_t cumulative_compaction_cnt = 0;

    {

        std::lock_guard lock {_tablet->get_header_lock()};

        base_compaction_cnt = _tablet->base_compaction_cnt();

        cumulative_compaction_cnt = _tablet->cumulative_compaction_cnt();

    }

    cloud::TabletJobInfoPB job;

    auto* idx = job.mutable_idx();

    idx->set_tablet_id(_tablet->tablet_id());

    idx->set_table_id(_tablet->table_id());

    idx->set_index_id(_tablet->index_id());

    idx->set_partition_id(_tablet->partition_id());

    auto* compaction_job = job.add_compaction();

    compaction_job->set_id(_uuid);

    compaction_job->set_delete_bitmap_lock_initiator(_initiator);

    compaction_job->set_initiator(BackendOptions::get_localhost() + ':' +

                                  std::to_string(config::heartbeat_service_port));

    compaction_job->set_type(cloud::TabletCompactionJobPB::STOP_TOKEN);

    // required by MS to check if it's a valid compaction job

    compaction_job->set_base_compaction_cnt(base_compaction_cnt);

    compaction_job->set_cumulative_compaction_cnt(cumulative_compaction_cnt);

    using namespace std::chrono;

    int64_t now = duration_cast<seconds>(system_clock::now().time_since_epoch()).count();

    compaction_job->set_expiration(now + config::compaction_timeout_seconds);

    compaction_job->set_lease(now + (config::lease_compaction_interval_seconds * 4));

    cloud::StartTabletJobResponse resp;

    auto st = _engine.meta_mgr().prepare_tablet_job(job, &resp);

    if (!st.ok()) {

        LOG_WARNING("failed to register compaction stop token")

                .tag("job_id", _uuid)

                .tag("delete_bitmap_lock_initiator", _initiator)

                .tag("tablet_id", _tablet->tablet_id())

                .error(st);

    }

    return st;

}

Status CloudCompactionStopToken::do_unregister() {

    cloud::TabletJobInfoPB job;

    auto* idx = job.mutable_idx();

    idx->set_tablet_id(_tablet->tablet_id());

    idx->set_table_id(_tablet->table_id());

    idx->set_index_id(_tablet->index_id());

    idx->set_partition_id(_tablet->partition_id());

    auto* compaction_job = job.add_compaction();

    compaction_job->set_id(_uuid);

    compaction_job->set_delete_bitmap_lock_initiator(_initiator);

    compaction_job->set_initiator(BackendOptions::get_localhost() + ':' +

                                  std::to_string(config::heartbeat_service_port));

    compaction_job->set_type(cloud::TabletCompactionJobPB::STOP_TOKEN);

    auto st = _engine.meta_mgr().abort_tablet_job(job);

    if (!st.ok()) {

        LOG_WARNING("failed to unregister compaction stop token")

                .tag("job_id", _uuid)

                .tag("delete_bitmap_lock_initiator", _initiator)

                .tag("tablet_id", _tablet->tablet_id())

                .error(st);

    }

    return st;

}

int64_t CloudCompactionStopToken::initiator() const {

    return _initiator;

}

} // namespace doris