// 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 "common/status.h"

#include "io/fs/file_reader.h"

#include "io/io_common.h"

#include "runtime/runtime_profile.h"

namespace doris {

namespace io {

class TracingFileReader : public FileReader {

public:

    TracingFileReader(doris::io::FileReaderSPtr inner, FileReaderStats* stats)

            : _inner(std::move(inner)), _stats(stats) {}

    Status read_at_impl(size_t offset, Slice result, size_t* bytes_read,

                        const IOContext* io_ctx) override {

        SCOPED_RAW_TIMER(&_stats->read_time_ns);

        Status st = _inner->read_at(offset, result, bytes_read, io_ctx);

        _stats->read_calls++;

        _stats->read_bytes += *bytes_read;

        return st;

    }

    Status close() override { return _inner->close(); }

    const doris::io::Path& path() const override { return _inner->path(); }

    size_t size() const override { return _inner->size(); }

    bool closed() const override { return _inner->closed(); }

    const std::string& get_data_dir_path() override { return _inner->get_data_dir_path(); }

    void _collect_profile_at_runtime() override { return _inner->collect_profile_at_runtime(); }

    void _collect_profile_before_close() override { return _inner->collect_profile_before_close(); }

    int64_t mtime() const override { return _inner->mtime(); }

    FileReaderStats* stats() const { return _stats; }

    doris::io::FileReaderSPtr inner_reader() { return _inner; }

private:

    doris::io::FileReaderSPtr _inner;

    FileReaderStats* _stats;

};

} // namespace io

} // namespace doris