25개 이상의 토픽을 선택하실 수 없습니다.
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
3.0 KiB
120 lines
3.0 KiB
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#include "gtest/gtest.h"
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#include "leveldb/env.h"
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#include "leveldb/db.h"
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using namespace leveldb;
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// 定义了数据的大小，用于插入大数据集，燕
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constexpr int value_size = 2048;
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constexpr int data_size = 128 << 20;
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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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void InsertData(DB *db, uint64_t ttl/* second */) {
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WriteOptions writeOptions;
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int key_num = data_size / value_size;
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srand(0);
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for (int i = 0; i < key_num; i++) {
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int key_ = rand() % key_num+1;
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// int key_ = i % key_num+1;
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std::string key = std::to_string(key_);
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std::string value(value_size, 'a');
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db->Put(writeOptions, key, value, ttl);
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}
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}
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void GetData(DB *db, int size = (1 << 30)) {
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ReadOptions readOptions;
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int key_num = data_size / value_size;
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// 使用随机种子生成随机键进行点查（单次查询），燕
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// 点查
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srand(0);
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for (int i = 0; i < 100; i++) {
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int key_ = rand() % key_num+1;
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//int key_ = i % key_num+1;
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std::string key = std::to_string(key_);
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std::string value;
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db->Get(readOptions, key, &value);
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}
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}
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TEST(TestTTL, ReadTTL) {
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DB *db;
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if(OpenDB("testdb", &db).ok() == false) {
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std::cerr << "open db failed" << std::endl;
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abort();
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}
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uint64_t ttl = 200;
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InsertData(db, ttl);
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ReadOptions readOptions;
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Status status;
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int key_num = data_size / value_size;
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srand(0);
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for (int i = 0; i < 100; i++) {
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int key_ = rand() % key_num+1;
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// int key_ = i % key_num+1;
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std::string key = std::to_string(key_);
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std::string value;
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status = db->Get(readOptions, key, &value);
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ASSERT_TRUE(status.ok());
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}
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// 等待TTL过期，使插入的数据变为“过期”状态，燕
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Env::Default()->SleepForMicroseconds(ttl * 1000000);
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for (int i = 0; i < 100; i++) {
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int key_ = rand() % key_num+1;
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// int key_ = i % key_num+1;
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std::string key = std::to_string(key_);
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std::string value;
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status = db->Get(readOptions, key, &value);
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ASSERT_FALSE(status.ok());
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}
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}
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TEST(TestTTL, CompactionTTL) {
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DB *db;
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if(OpenDB("testdb", &db).ok() == false) {
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std::cerr << "open db failed" << std::endl;
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abort();
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}
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uint64_t ttl = 20;
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InsertData(db, ttl);
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leveldb::Range ranges[1];
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ranges[0] = leveldb::Range("-", "A");
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uint64_t sizes[1];
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db->GetApproximateSizes(ranges, 1, sizes);
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ASSERT_GT(sizes[0], 0);
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Env::Default()->SleepForMicroseconds(ttl * 1000000);
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db->CompactRange(nullptr, nullptr);
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// leveldb::Range ranges[1]; // 这里为什么要重复定义？心
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ranges[0] = leveldb::Range("-", "A");
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// uint64_t sizes[1]; // 心
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db->GetApproximateSizes(ranges, 1, sizes);
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ASSERT_EQ(sizes[0], 0);
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}
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int main(int argc, char** argv) {
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// All tests currently run with the same read-only file limits.
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testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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