projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 494da23a TL |
1 | // Copyright (c) 2011-present, Facebook, Inc. All rights reserved. |
| 2 | // This source code is licensed under both the GPLv2 (found in the | |
| 3 | // COPYING file in the root directory) and Apache 2.0 License | |
| 4 | // (found in the LICENSE.Apache file in the root directory). | |
| 5 | ||
| 6 | #ifndef ROCKSDB_LITE | |
| 7 | ||
| 8 | #include "rocksdb/sst_file_reader.h" | |
| 9 | ||
| 10 | #include "db/db_iter.h" | |
| 11 | #include "db/dbformat.h" | |
| 12 | #include "options/cf_options.h" | |
| 13 | #include "table/get_context.h" | |
| 14 | #include "table/table_builder.h" | |
| 15 | #include "table/table_reader.h" | |
| 16 | #include "util/file_reader_writer.h" | |
| 17 | ||
| 18 | namespace rocksdb { | |
| 19 | ||
| 20 | struct SstFileReader::Rep { | |
| 21 | Options options; | |
| 22 | EnvOptions soptions; | |
| 23 | ImmutableCFOptions ioptions; | |
| 24 | MutableCFOptions moptions; | |
| 25 | ||
| 26 | std::unique_ptr<TableReader> table_reader; | |
| 27 | ||
| 28 | Rep(const Options& opts) | |
| 29 | : options(opts), | |
| 30 | soptions(options), | |
| 31 | ioptions(options), | |
| 32 | moptions(ColumnFamilyOptions(options)) {} | |
| 33 | }; | |
| 34 | ||
| 35 | SstFileReader::SstFileReader(const Options& options) : rep_(new Rep(options)) {} | |
| 36 | ||
| 37 | SstFileReader::~SstFileReader() {} | |
| 38 | ||
| 39 | Status SstFileReader::Open(const std::string& file_path) { | |
| 40 | auto r = rep_.get(); | |
| 41 | Status s; | |
| 42 | uint64_t file_size = 0; | |
| 43 | std::unique_ptr<RandomAccessFile> file; | |
| 44 | std::unique_ptr<RandomAccessFileReader> file_reader; | |
| 45 | s = r->options.env->GetFileSize(file_path, &file_size); | |
| 46 | if (s.ok()) { | |
| 47 | s = r->options.env->NewRandomAccessFile(file_path, &file, r->soptions); | |
| 48 | } | |
| 49 | if (s.ok()) { | |
| 50 | file_reader.reset(new RandomAccessFileReader(std::move(file), file_path)); | |
| 51 | } | |
| 52 | if (s.ok()) { | |
| 53 | TableReaderOptions t_opt(r->ioptions, r->moptions.prefix_extractor.get(), | |
| 54 | r->soptions, r->ioptions.internal_comparator); | |
| 55 | // Allow open file with global sequence number for backward compatibility. | |
| 56 | t_opt.largest_seqno = kMaxSequenceNumber; | |
| 57 | s = r->options.table_factory->NewTableReader(t_opt, std::move(file_reader), | |
| 58 | file_size, &r->table_reader); | |
| 59 | } | |
| 60 | return s; | |
| 61 | } | |
| 62 | ||
| 63 | Iterator* SstFileReader::NewIterator(const ReadOptions& options) { | |
| 64 | auto r = rep_.get(); | |
| 65 | auto sequence = options.snapshot != nullptr | |
| 66 | ? options.snapshot->GetSequenceNumber() | |
| 67 | : kMaxSequenceNumber; | |
| 68 | auto internal_iter = | |
| 69 | r->table_reader->NewIterator(options, r->moptions.prefix_extractor.get()); | |
| 70 | return NewDBIterator(r->options.env, options, r->ioptions, r->moptions, | |
| 71 | r->ioptions.user_comparator, internal_iter, sequence, | |
| 72 | r->moptions.max_sequential_skip_in_iterations, | |
| 73 | nullptr /* read_callback */); | |
| 74 | } | |
| 75 | ||
| 76 | std::shared_ptr<const TableProperties> SstFileReader::GetTableProperties() | |
| 77 | const { | |
| 78 | return rep_->table_reader->GetTableProperties(); | |
| 79 | } | |
| 80 | ||
| 81 | Status SstFileReader::VerifyChecksum() { | |
| 82 | return rep_->table_reader->VerifyChecksum(); | |
| 83 | } | |
| 84 | ||
| 85 | } // namespace rocksdb | |
| 86 | ||
| 87 | #endif // !ROCKSDB_LITE |