// 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 "load/channel/load_stream_mgr.h"

#include <brpc/stream.h>

#include "load/channel/load_channel.h"

#include "load/channel/load_stream.h"

#include "runtime/exec_env.h"

#include "storage/rowset/rowset_factory.h"

#include "storage/rowset/rowset_meta.h"

#include "storage/storage_engine.h"

#include "storage/tablet/tablet_manager.h"

#include "util/lru_cache.h"

#include "util/uid_util.h"

namespace doris {

LoadStreamMgr::LoadStreamMgr(uint32_t segment_file_writer_thread_num) {

    static_cast<void>(ThreadPoolBuilder("SegmentFileWriterThreadPool")

                              .set_min_threads(segment_file_writer_thread_num)

                              .set_max_threads(segment_file_writer_thread_num)

                              .build(&_file_writer_thread_pool));

}

LoadStreamMgr::~LoadStreamMgr() {

    _load_streams_map.clear();

    _file_writer_thread_pool->shutdown();

}

Status LoadStreamMgr::open_load_stream(const POpenLoadStreamRequest* request,

                                       LoadStream*& load_stream) {

    UniqueId load_id(request->load_id());

    {

        std::lock_guard l(_lock);

        auto it = _load_streams_map.find(load_id);

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

            load_stream = it->second.get();

        } else {

            auto p = std::make_unique<LoadStream>(request->load_id(), this,

                                                  request->enable_profile());

            RETURN_IF_ERROR(p->init(request));

            load_stream = p.get();

            _load_streams_map[load_id] = std::move(p);

        }

        load_stream->add_source(request->src_id());

    }

    return Status::OK();

}

void LoadStreamMgr::clear_load(UniqueId load_id) {

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

    _load_streams_map.erase(load_id);

}

} // namespace doris