projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 20effc67 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 | ||
| 7 | #include "rocksdb/sst_partitioner.h" | |
| 8 | ||
| 9 | #include <algorithm> | |
| 10 | ||
| 11 | namespace ROCKSDB_NAMESPACE { | |
| 12 | ||
| 13 | PartitionerResult SstPartitionerFixedPrefix::ShouldPartition( | |
| 14 | const PartitionerRequest& request) { | |
| 15 | Slice last_key_fixed(*request.prev_user_key); | |
| 16 | if (last_key_fixed.size() > len_) { | |
| 17 | last_key_fixed.size_ = len_; | |
| 18 | } | |
| 19 | Slice current_key_fixed(*request.current_user_key); | |
| 20 | if (current_key_fixed.size() > len_) { | |
| 21 | current_key_fixed.size_ = len_; | |
| 22 | } | |
| 23 | return last_key_fixed.compare(current_key_fixed) != 0 ? kRequired | |
| 24 | : kNotRequired; | |
| 25 | } | |
| 26 | ||
| 27 | bool SstPartitionerFixedPrefix::CanDoTrivialMove( | |
| 28 | const Slice& smallest_user_key, const Slice& largest_user_key) { | |
| 29 | return ShouldPartition(PartitionerRequest(smallest_user_key, largest_user_key, | |
| 30 | 0)) == kNotRequired; | |
| 31 | } | |
| 32 | ||
| 33 | std::unique_ptr<SstPartitioner> | |
| 34 | SstPartitionerFixedPrefixFactory::CreatePartitioner( | |
| 35 | const SstPartitioner::Context& /* context */) const { | |
| 36 | return std::unique_ptr<SstPartitioner>(new SstPartitionerFixedPrefix(len_)); | |
| 37 | } | |
| 38 | ||
| 39 | std::shared_ptr<SstPartitionerFactory> NewSstPartitionerFixedPrefixFactory( | |
| 40 | size_t prefix_len) { | |
| 41 | return std::make_shared<SstPartitionerFixedPrefixFactory>(prefix_len); | |
| 42 | } | |
| 43 | ||
| 44 | } // namespace ROCKSDB_NAMESPACE |