Windows下使用clion调试LevelDB与rocksdb

关于leveldb

下载leveldb源码

链接: leveldbGit地址

增加测试文件

使用clion打开项目，在根目录下新建一个app目录，app目录下新建一个main.cpp。代码如下：

//
//
#include <cassert>
#include <iostream>
#include "include/leveldb/db.h"int main() {//std::cout << "leveldb open success!" << std::endl;//return 0;leveldb::DB *db;leveldb::Options options;options.create_if_missing = true;leveldb::Status status = leveldb::DB::Open(options, "c://myLevelDB", &db);assert(status.ok());std::cout << "leveldb open success!" << std::endl;std::string value;std::string key1 = "testkey1";leveldb::Status s = db->Get(leveldb::ReadOptions(), key1, &value);if (s.IsNotFound()) {std::cout << "can not found for key:" << key1 << std::endl;db->Put(leveldb::WriteOptions(), key1, "testvalue1");}s = db->Get(leveldb::ReadOptions(), key1, &value);if (s.ok()) {std::cout << "found key:" << key1 << ",value:" << value << std::endl;}s = db->Delete(leveldb::WriteOptions(), key1);if (s.ok()) {std::cout << "delete key success which key:" << key1 << std::endl;}s = db->Get(leveldb::ReadOptions(), key1, &value);if (s.IsNotFound()) {std::cout << "can not found after delete for key:" << key1 << std::endl;}delete db;return 0;
}

更新cmake文件

在CMakeList.txt里面寻找leveldbutil字符串，然后在下面增加

add_executable(myTest "app/main.cpp")
target_link_libraries(myTest leveldb)

最终效果如下：

运行

关于RocksDB

下载RocksDB代码

同上，在根目录的app目录下增加测试文件main.cpp,代码如下：

//
// Created by  on 2024/1/11.
//
#include <iostream>
#include <string>#include "rocksdb/db.h"
#include "rocksdb/options.h"
#include "rocksdb/slice.h"using ROCKSDB_NAMESPACE::DB;
using ROCKSDB_NAMESPACE::Options;
using ROCKSDB_NAMESPACE::PinnableSlice;
using ROCKSDB_NAMESPACE::ReadOptions;
using ROCKSDB_NAMESPACE::Status;
using ROCKSDB_NAMESPACE::WriteBatch;
using ROCKSDB_NAMESPACE::WriteOptions;// rocksdb存储路径
std::string kDBPath="c://myrocksdb";int main()
{DB* db;Options options;options.IncreaseParallelism();//文件夹没有数据就创建options.create_if_missing=true;// 打开数据库，加载数据到内存Status s=DB::Open(options,kDBPath,&db);assert(s.ok());// 写key-values=db->Put(WriteOptions(),"key01","value");assert(s.ok());std::string value;s=db->Get(ReadOptions(),"key01",&value);assert(s.ok());std::cout<<"get value  "<< value<<std::endl;assert(value=="value");// 管道，原子方式更新{WriteBatch batch;batch.Delete("key01");batch.Put("key02",value);s=db->Write(WriteOptions(),&batch);}s=db->Get(ReadOptions(),"key01",&value);assert(s.IsNotFound());s=db->Get(ReadOptions(),"key02",&value);assert(value=="value");{PinnableSlice pinnable_val;// 列族方式读取db->Get(ReadOptions(),db->DefaultColumnFamily(),"key02",&pinnable_val);assert(pinnable_val=="value");}{std::string string_val;PinnableSlice pinnable_val(&string_val);// 列族方式读取db->Get(ReadOptions(),db->DefaultColumnFamily(),"key02",&pinnable_val);assert(pinnable_val=="value");assert(pinnable_val.IsPinned() || string_val == "value");}PinnableSlice pinnable_val;s=db->Get(ReadOptions(),db->DefaultColumnFamily(),"key01",&pinnable_val);assert(s.IsNotFound());pinnable_val.Reset();db->Get(ReadOptions(),db->DefaultColumnFamily(),"key02",&pinnable_val);assert(pinnable_val=="value");pinnable_val.Reset();delete db;return 0;
}

修改CMakelist.txt

增加如下内容：

add_executable(myTest "app/main.cpp")
target_link_libraries(myTest ${ROCKSDB_STATIC_LIB})

效果如下：

运行

参考资料：

https://zhuanlan.zhihu.com/p/653465714
https://zhuanlan.zhihu.com/p/611450548