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9a270f3f6d
rocksdb/db/plain_table_db_test.cc
kailiu 4f6cb17bdb First phase API clean up 
Summary:
Addressed all the issues in https://reviews.facebook.net/D15447.
Now most table-related modules are hidden from user land.

Test Plan: make check

Reviewers: sdong, haobo, dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D15525
2014-02-03 00:30:43 -08:00

338 lines
9.3 KiB
C++
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// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <algorithm>
#include <set>
#include "db/db_impl.h"
#include "db/filename.h"
#include "db/version_set.h"
#include "db/write_batch_internal.h"
#include "rocksdb/cache.h"
#include "rocksdb/compaction_filter.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/table.h"
#include "table/plain_table_factory.h"
#include "util/hash.h"
#include "util/logging.h"
#include "util/mutexlock.h"
#include "util/testharness.h"
#include "util/testutil.h"
#include "utilities/merge_operators.h"
using std::unique_ptr;
namespace rocksdb {
class PlainTableDBTest {
protected:
private:
std::string dbname_;
Env* env_;
DB* db_;
Options last_options_;
static std::unique_ptr<const SliceTransform> prefix_transform;
public:
PlainTableDBTest() : env_(Env::Default()) {
dbname_ = test::TmpDir() + "/plain_table_db_test";
ASSERT_OK(DestroyDB(dbname_, Options()));
db_ = nullptr;
Reopen();
}
~PlainTableDBTest() {
delete db_;
ASSERT_OK(DestroyDB(dbname_, Options()));
}
// Return the current option configuration.
Options CurrentOptions() {
Options options;
options.table_factory.reset(new PlainTableFactory(16, 2, 0.8));
options.prefix_extractor = prefix_transform.get();
options.allow_mmap_reads = true;
return options;
}
DBImpl* dbfull() {
return reinterpret_cast<DBImpl*>(db_);
}
void Reopen(Options* options = nullptr) {
ASSERT_OK(TryReopen(options));
}
void Close() {
delete db_;
db_ = nullptr;
}
void DestroyAndReopen(Options* options = nullptr) {
//Destroy using last options
Destroy(&last_options_);
ASSERT_OK(TryReopen(options));
}
void Destroy(Options* options) {
delete db_;
db_ = nullptr;
ASSERT_OK(DestroyDB(dbname_, *options));
}
Status PureReopen(Options* options, DB** db) {
return DB::Open(*options, dbname_, db);
}
Status TryReopen(Options* options = nullptr) {
delete db_;
db_ = nullptr;
Options opts;
if (options != nullptr) {
opts = *options;
} else {
opts = CurrentOptions();
opts.create_if_missing = true;
}
last_options_ = opts;
return DB::Open(opts, dbname_, &db_);
}
Status Put(const Slice& k, const Slice& v) {
return db_->Put(WriteOptions(), k, v);
}
Status Delete(const std::string& k) {
return db_->Delete(WriteOptions(), k);
}
std::string Get(const std::string& k, const Snapshot* snapshot = nullptr) {
ReadOptions options;
options.snapshot = snapshot;
std::string result;
Status s = db_->Get(options, k, &result);
if (s.IsNotFound()) {
result = "NOT_FOUND";
} else if (!s.ok()) {
result = s.ToString();
}
return result;
}
int NumTableFilesAtLevel(int level) {
std::string property;
ASSERT_TRUE(
db_->GetProperty("rocksdb.num-files-at-level" + NumberToString(level),
&property));
return atoi(property.c_str());
}
// Return spread of files per level
std::string FilesPerLevel() {
std::string result;
int last_non_zero_offset = 0;
for (int level = 0; level < db_->NumberLevels(); level++) {
int f = NumTableFilesAtLevel(level);
char buf[100];
snprintf(buf, sizeof(buf), "%s%d", (level ? "," : ""), f);
result += buf;
if (f > 0) {
last_non_zero_offset = result.size();
}
}
result.resize(last_non_zero_offset);
return result;
}
std::string IterStatus(Iterator* iter) {
std::string result;
if (iter->Valid()) {
result = iter->key().ToString() + "->" + iter->value().ToString();
} else {
result = "(invalid)";
}
return result;
}
};
std::unique_ptr<const SliceTransform> PlainTableDBTest::prefix_transform(
NewFixedPrefixTransform(8));
TEST(PlainTableDBTest, Empty) {
ASSERT_TRUE(dbfull() != nullptr);
ASSERT_EQ("NOT_FOUND", Get("0000000000000foo"));
}
TEST(PlainTableDBTest, ReadWrite) {
ASSERT_OK(Put("1000000000000foo", "v1"));
ASSERT_EQ("v1", Get("1000000000000foo"));
ASSERT_OK(Put("0000000000000bar", "v2"));
ASSERT_OK(Put("1000000000000foo", "v3"));
ASSERT_EQ("v3", Get("1000000000000foo"));
ASSERT_EQ("v2", Get("0000000000000bar"));
}
TEST(PlainTableDBTest, Flush) {
ASSERT_OK(Put("1000000000000foo", "v1"));
ASSERT_OK(Put("0000000000000bar", "v2"));
ASSERT_OK(Put("1000000000000foo", "v3"));
dbfull()->TEST_FlushMemTable();
ASSERT_EQ("v3", Get("1000000000000foo"));
ASSERT_EQ("v2", Get("0000000000000bar"));
}
TEST(PlainTableDBTest, Iterator) {
ASSERT_OK(Put("1000000000foo002", "v_2"));
ASSERT_OK(Put("0000000000000bar", "random"));
ASSERT_OK(Put("1000000000foo001", "v1"));
ASSERT_OK(Put("3000000000000bar", "bar_v"));
ASSERT_OK(Put("1000000000foo003", "v__3"));
ASSERT_OK(Put("1000000000foo004", "v__4"));
ASSERT_OK(Put("1000000000foo005", "v__5"));
ASSERT_OK(Put("1000000000foo007", "v__7"));
ASSERT_OK(Put("1000000000foo008", "v__8"));
dbfull()->TEST_FlushMemTable();
ASSERT_EQ("v1", Get("1000000000foo001"));
ASSERT_EQ("v__3", Get("1000000000foo003"));
ReadOptions ro;
Iterator* iter = dbfull()->NewIterator(ro);
iter->Seek("1000000000foo001");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("1000000000foo001", iter->key().ToString());
ASSERT_EQ("v1", iter->value().ToString());
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("1000000000foo002", iter->key().ToString());
ASSERT_EQ("v_2", iter->value().ToString());
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("1000000000foo003", iter->key().ToString());
ASSERT_EQ("v__3", iter->value().ToString());
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("1000000000foo004", iter->key().ToString());
ASSERT_EQ("v__4", iter->value().ToString());
iter->Seek("3000000000000bar");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("3000000000000bar", iter->key().ToString());
ASSERT_EQ("bar_v", iter->value().ToString());
iter->Seek("1000000000foo000");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("1000000000foo001", iter->key().ToString());
ASSERT_EQ("v1", iter->value().ToString());
iter->Seek("1000000000foo005");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("1000000000foo005", iter->key().ToString());
ASSERT_EQ("v__5", iter->value().ToString());
iter->Seek("1000000000foo006");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("1000000000foo007", iter->key().ToString());
ASSERT_EQ("v__7", iter->value().ToString());
iter->Seek("1000000000foo008");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("1000000000foo008", iter->key().ToString());
ASSERT_EQ("v__8", iter->value().ToString());
iter->Seek("1000000000foo009");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("3000000000000bar", iter->key().ToString());
delete iter;
}
TEST(PlainTableDBTest, Flush2) {
ASSERT_OK(Put("0000000000000bar", "b"));
ASSERT_OK(Put("1000000000000foo", "v1"));
dbfull()->TEST_FlushMemTable();
ASSERT_OK(Put("1000000000000foo", "v2"));
dbfull()->TEST_FlushMemTable();
ASSERT_EQ("v2", Get("1000000000000foo"));
ASSERT_OK(Put("0000000000000eee", "v3"));
dbfull()->TEST_FlushMemTable();
ASSERT_EQ("v3", Get("0000000000000eee"));
ASSERT_OK(Delete("0000000000000bar"));
dbfull()->TEST_FlushMemTable();
ASSERT_EQ("NOT_FOUND", Get("0000000000000bar"));
ASSERT_OK(Put("0000000000000eee", "v5"));
dbfull()->TEST_FlushMemTable();
ASSERT_EQ("v5", Get("0000000000000eee"));
}
static std::string Key(int i) {
char buf[100];
snprintf(buf, sizeof(buf), "key_______%06d", i);
return std::string(buf);
}
static std::string RandomString(Random* rnd, int len) {
std::string r;
test::RandomString(rnd, len, &r);
return r;
}
TEST(PlainTableDBTest, CompactionTrigger) {
Options options = CurrentOptions();
options.write_buffer_size = 100 << 10; //100KB
options.num_levels = 3;
options.max_mem_compaction_level = 0;
options.level0_file_num_compaction_trigger = 3;
Reopen(&options);
Random rnd(301);
for (int num = 0; num < options.level0_file_num_compaction_trigger - 1;
num++) {
std::vector<std::string> values;
// Write 120KB (12 values, each 10K)
for (int i = 0; i < 12; i++) {
values.push_back(RandomString(&rnd, 10000));
ASSERT_OK(Put(Key(i), values[i]));
}
dbfull()->TEST_WaitForFlushMemTable();
ASSERT_EQ(NumTableFilesAtLevel(0), num + 1);
}
//generate one more file in level-0, and should trigger level-0 compaction
std::vector<std::string> values;
for (int i = 0; i < 12; i++) {
values.push_back(RandomString(&rnd, 10000));
ASSERT_OK(Put(Key(i), values[i]));
}
dbfull()->TEST_WaitForCompact();
ASSERT_EQ(NumTableFilesAtLevel(0), 0);
ASSERT_EQ(NumTableFilesAtLevel(1), 1);
}
} // namespace rocksdb
int main(int argc, char** argv) {
return rocksdb::test::RunAllTests();
}
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