torwig commented on code in PR #882: URL: https://github.com/apache/incubator-kvrocks/pull/882#discussion_r973582104
########## src/redis_disk.cc: ########## @@ -0,0 +1,146 @@ +/* + * 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. + * + */ + +#include <vector> +#include <memory> +#include <utility> +#include <algorithm> +#include <string> + +#include "db_util.h" +#include "redis_metadata.h" +#include "redis_sortedint.h" +#include "rocksdb/status.h" +#include "redis_zset.h" +#include "redis_bitmap.h" +#include "redis_disk.h" +#include "status.h" + +namespace Redis { +rocksdb::Status Disk::GetApproximateSizes(const Metadata &metadata, const Slice &ns_key, + rocksdb::ColumnFamilyHandle *column_family, + uint64_t *key_size, Slice subkeyleft , + Slice subkeyright) { + std::string prefix_key, next_version_prefix_key; + InternalKey(ns_key, subkeyleft, metadata.version, + storage_->IsSlotIdEncoded()).Encode(&prefix_key); + InternalKey(ns_key, subkeyright, metadata.version + 1, + storage_->IsSlotIdEncoded()).Encode(&next_version_prefix_key); + auto key_range = rocksdb::Range(prefix_key, next_version_prefix_key); + uint64_t tmp_size = 0; + rocksdb::Status s = db_->GetApproximateSizes(this->option, column_family, + &key_range, 1, &tmp_size); + if (!s.ok()) return s; + *key_size += tmp_size; + return rocksdb::Status::OK(); +} +rocksdb::Status Disk::GetStringSize(const Slice &user_key, uint64_t *key_size) { + std::string ns_key; + AppendNamespacePrefix(user_key, &ns_key); + auto key_range = rocksdb::Range(Slice(ns_key), Slice(ns_key + static_cast<char>(0))); + return db_->GetApproximateSizes(this->option, metadata_cf_handle_, &key_range, 1, key_size); +} + +rocksdb::Status Disk::GetHashSize(const Slice &user_key, uint64_t *key_size) { + *key_size = 0; + std::string ns_key; + AppendNamespacePrefix(user_key, &ns_key); + HashMetadata metadata(false); + rocksdb::Status s = Database::GetMetadata(kRedisHash, ns_key, &metadata); + if (!s.ok()) return s.IsNotFound() ? rocksdb::Status::OK() : s; + return this->GetApproximateSizes(metadata, ns_key, + storage_->GetCFHandle(Engine::kSubkeyColumnFamilyName), + key_size); +} + + +rocksdb::Status Disk::GetSetSize(const Slice &user_key, uint64_t *key_size) { + *key_size = 0; + std::string ns_key; + AppendNamespacePrefix(user_key, &ns_key); + HashMetadata metadata(false); + rocksdb::Status s = Database::GetMetadata(kRedisSet, ns_key, &metadata); + if (!s.ok()) return s.IsNotFound() ? rocksdb::Status::OK() : s; + return this->GetApproximateSizes(metadata, ns_key, + storage_->GetCFHandle(Engine::kSubkeyColumnFamilyName), + key_size); +} + +rocksdb::Status Disk::GetListSize(const Slice &user_key, uint64_t *key_size) { + *key_size = 0; + std::string ns_key; + AppendNamespacePrefix(user_key, &ns_key); + ListMetadata metadata(false); + rocksdb::Status s = Database::GetMetadata(kRedisList, ns_key, &metadata); + if (!s.ok()) return s.IsNotFound() ? rocksdb::Status::OK() : s; + std::string buf; + PutFixed64(&buf, metadata.head); + return this->GetApproximateSizes(metadata, ns_key, + storage_->GetCFHandle(Engine::kSubkeyColumnFamilyName), + key_size, buf); +} + +rocksdb::Status Disk::GetZsetSize(const Slice &user_key, uint64_t *key_size) { + *key_size = 0; + std::string ns_key; + AppendNamespacePrefix(user_key, &ns_key); + ZSetMetadata metadata(false); + rocksdb::Status s = Database::GetMetadata(kRedisZSet, ns_key, &metadata); + if (!s.ok()) return s.IsNotFound() ? rocksdb::Status::OK() : s; + std::string score_bytes; + PutDouble(&score_bytes, kMinScore); + s = this->GetApproximateSizes(metadata, ns_key, + storage_->GetCFHandle(Engine::kZSetScoreColumnFamilyName), + key_size, score_bytes, score_bytes); + if (!s.ok()) return s; + return this->GetApproximateSizes(metadata, ns_key, + storage_->GetCFHandle(Engine::kSubkeyColumnFamilyName), + key_size); +} + +rocksdb::Status Disk::GetBitmapSize(const Slice &user_key, uint64_t *key_size) { + *key_size = 0; + std::string ns_key; + AppendNamespacePrefix(user_key, &ns_key); + BitmapMetadata metadata(false); + rocksdb::Status s = Database::GetMetadata(kRedisBitmap, ns_key, &metadata); + if (!s.ok()) return s.IsNotFound() ? rocksdb::Status::OK() : s; + std::string score_bytes; + PutDouble(&score_bytes, kMinScore); + return this->GetApproximateSizes(metadata, ns_key, + storage_->GetCFHandle(Engine::kSubkeyColumnFamilyName), + key_size, std::to_string(0), std::to_string(0)); +} + +rocksdb::Status Disk::GetSortedintSize(const Slice &user_key, uint64_t *key_size) { + *key_size = 0; + std::string ns_key; + AppendNamespacePrefix(user_key, &ns_key); + SortedintMetadata metadata(false); + rocksdb::Status s = Database::GetMetadata(kRedisSortedint, ns_key, &metadata); + if (!s.ok()) return s.IsNotFound() ? rocksdb::Status::OK() : s; + std::string prefix_key, next_version_prefix_key, start_buf; + PutFixed64(&start_buf, 0); + return this->GetApproximateSizes(metadata, ns_key, Review Comment: You can omit `this` when calling class functions here and in other functions as well. -- This is an automated message from the Apache Git Service. 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