// 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.

#pragma once

#include <memory>

#include <mutex>

#include <string>

#include "common/metrics/metrics.h"

#include "service/http/http_handler.h"

namespace doris {

class ExecEnv;

class Status;

class StreamLoadContext;

class HttpRequest;

class StreamLoadAction : public HttpHandler {

public:

    StreamLoadAction(ExecEnv* exec_env);

    ~StreamLoadAction() override;

    void handle(HttpRequest* req) override;

    bool request_will_be_read_progressively() override { return true; }

    int on_header(HttpRequest* req) override;

    void on_chunk_data(HttpRequest* req) override;

    void free_handler_ctx(std::shared_ptr<void> ctx) override;

private:

    Status _on_header(HttpRequest* http_req, std::shared_ptr<StreamLoadContext> ctx);

    Status _handle(std::shared_ptr<StreamLoadContext> ctx, HttpRequest* req);

    Status _data_saved_path(HttpRequest* req, std::string* file_path, int64_t file_bytes);

    Status _process_put(HttpRequest* http_req, std::shared_ptr<StreamLoadContext> ctx);

    void _save_stream_load_record(std::shared_ptr<StreamLoadContext> ctx, const std::string& str);

    Status _handle_group_commit(HttpRequest* http_req, std::shared_ptr<StreamLoadContext> ctx);

    void _on_finish(std::shared_ptr<StreamLoadContext> ctx, HttpRequest* req);

    void _send_reply(std::shared_ptr<StreamLoadContext> ctx, HttpRequest* req);

private:

    ExecEnv* _exec_env;

    std::shared_ptr<MetricEntity> _stream_load_entity;

    IntCounter* streaming_load_requests_total;

    IntCounter* streaming_load_duration_ms;

    IntGauge* streaming_load_current_processing;

};

} // namespace doris