be/src/io/fs/file_meta_disk_cache.h
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1 | | // Licensed to the Apache Software Foundation (ASF) under one |
2 | | // or more contributor license agreements. See the NOTICE file |
3 | | // distributed with this work for additional information |
4 | | // regarding copyright ownership. The ASF licenses this file |
5 | | // to you under the Apache License, Version 2.0 (the |
6 | | // "License"); you may not use this file except in compliance |
7 | | // with the License. You may obtain a copy of the License at |
8 | | // |
9 | | // http://www.apache.org/licenses/LICENSE-2.0 |
10 | | // |
11 | | // Unless required by applicable law or agreed to in writing, |
12 | | // software distributed under the License is distributed on an |
13 | | // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
14 | | // KIND, either express or implied. See the License for the |
15 | | // specific language governing permissions and limitations |
16 | | // under the License. |
17 | | |
18 | | #pragma once |
19 | | |
20 | | #include <cstdint> |
21 | | #include <string> |
22 | | #include <string_view> |
23 | | |
24 | | #include "common/status.h" |
25 | | |
26 | | namespace doris { |
27 | | namespace io { |
28 | | class BlockFileCache; |
29 | | struct UInt128Wrapper; |
30 | | } // namespace io |
31 | | |
32 | | enum class FileMetaDiskCacheFormat : uint8_t { |
33 | | PARQUET = 1, |
34 | | ORC = 2, |
35 | | }; |
36 | | |
37 | | class FileMetaDiskCache { |
38 | | public: |
39 | 3 | explicit FileMetaDiskCache(io::BlockFileCache* cache = nullptr) : _cache(cache) {} |
40 | | |
41 | | static std::string get_key(FileMetaDiskCacheFormat format, |
42 | | std::string_view file_meta_cache_key); |
43 | | |
44 | | Status read(FileMetaDiskCacheFormat format, const std::string& file_meta_cache_key, |
45 | | int64_t modification_time, int64_t file_size, std::string* payload) const; |
46 | | |
47 | | Status write(FileMetaDiskCacheFormat format, const std::string& file_meta_cache_key, |
48 | | int64_t modification_time, int64_t file_size, std::string_view payload) const; |
49 | | |
50 | | private: |
51 | | io::BlockFileCache* get_cache(const io::UInt128Wrapper& hash) const; |
52 | | |
53 | | io::BlockFileCache* _cache = nullptr; |
54 | | }; |
55 | | |
56 | | } // namespace doris |