RocksReadWrite.cpp

#include <iostream>
#include <assert.h>
#include "rocksdb/db.h"

using namespace std;

int main() {
    rocksdb::DB* db;
    rocksdb::Options options;
    options.create_if_missing = true;
    
    // open a database with a name which corresponds to a file system directory
    rocksdb::Status status = rocksdb::DB::Open(options, "/tmp/testdb", &db);
    // check status
    if (!status.ok()) cerr << status.ToString() << endl;
    
    // Slice type can (should) be used in place of std::string for key-value
    rocksdb::Slice key = "foo";
    std::string value1 = "bar";
    
    // modify/query the database
    status = db->Put(rocksdb::WriteOptions(), key, value1);
    assert(status.ok());
    std::string value2;
    status = db->Get(rocksdb::ReadOptions(), key, &value2);
    assert(status.ok() && value1 == value2);
    status = db->Delete(rocksdb::WriteOptions(), key);
    assert(status.ok());
    status = db->Get(rocksdb::ReadOptions(), key, &value2);
    assert(status.IsNotFound());
    
    // close the database
    delete db;
    
    return 0;
}