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112 lines
3.3 KiB
112 lines
3.3 KiB
#include <chrono>
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#include <iomanip>
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#include <iostream>
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#include <leveldb/db.h>
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#include <leveldb/options.h>
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#include <numeric>
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#include <sstream>
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#include <string>
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#include <thread>
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#include <vector>
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#include "leveldb/env.h"
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#include "gtest/gtest.h"
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using namespace leveldb;
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// 根据字段值查找所有包含该字段的 key，遍历
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std::vector<std::string> FindKeysByField(leveldb::DB* db, const Field& field) {
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std::vector<std::string> keys;
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leveldb::Iterator* it = db->NewIterator(leveldb::ReadOptions());
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for (it->SeekToFirst(); it->Valid() ; it->Next()) {
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std::string key = it->key().ToString();
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FieldArray fields;
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db->Get_Fields(leveldb::ReadOptions(), key, fields);
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for (const auto& f : fields) {
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if (f.name == field.name && f.value == field.value) {
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keys.push_back(key);
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break; // 假设每个key中每个字段值唯一
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}
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}
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}
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delete it;
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return keys;
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}
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Status OpenDB(std::string dbName, DB** db) {
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Options options;
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options.create_if_missing = true;
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return DB::Open(options, dbName, db);
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}
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// 测试函数，使用多线程进行并发读写测试
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TEST(ConcurrentTest, Basic) {
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DB* db;
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WriteOptions writeOptions;
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ReadOptions readOptions;
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if (!OpenDB("testdb6", &db).ok()) {
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std::cerr << "open db failed" << std::endl;
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abort();
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}
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const int numThreads = 10;
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const int numOperationsPerThread = 100;
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std::vector<std::thread> threads;
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// 创建写线程
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for (int i = 0; i < numThreads / 2; ++i) {
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threads.emplace_back([&db, i, numOperationsPerThread]() {
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WriteOptions writeOptions;
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for (int j = 0; j < numOperationsPerThread; ++j) {
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std::string key = "key_" + std::to_string(i * numOperationsPerThread + j);
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FieldArray fields = {
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{"name", "Customer" + std::to_string(i * numOperationsPerThread + j)},
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{"address", "Address" + std::to_string(i * numOperationsPerThread + j)},
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{"phone", "1234567890"}
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};
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db->Put_Fields(writeOptions, key, fields);
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}
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});
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}
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// 创建读线程
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for (int i = 0; i < numThreads / 2; ++i) {
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threads.emplace_back([&db, i, numOperationsPerThread]() {
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ReadOptions readOptions;
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Field queryField = {"name", "Customer"};
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for (int j = 0; j < numOperationsPerThread; ++j) {
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std::string key = "key_" + std::to_string(i * numOperationsPerThread + j % (numOperationsPerThread * (numThreads / 2)));
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FieldArray fields;
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db->Get_Fields(readOptions, key, fields);
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bool found = false;
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for (const auto& field : fields) {
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if (field.name == queryField.name &&
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field.value.substr(0, queryField.value.size()) == queryField.value) { // 部分匹配以测试前缀搜索的效果
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found = true;
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break;
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}
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}
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// 添加断言检查读取的正确性
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// ASSERT_TRUE(found);
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}
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// 测试查找功能
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// std::vector<std::string> foundKeys = db.FindKeysByField(queryField);
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// 添加断言检查查找的正确性
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// ASSERT_EQ(foundKeys.size(), expectedSize);
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});
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}
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// 等待所有线程完成
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for (auto& thread : threads) {
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thread.join();
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}
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delete db;
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}
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int main(int argc, char** argv) {
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testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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