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rocksdb/db/dbformat_test.cc

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root 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 "db/dbformat.h"
#include "table/block_based/index_builder.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
namespace ROCKSDB_NAMESPACE {
static std::string IKey(const std::string& user_key, uint64_t seq,
ValueType vt) {
std::string encoded;
AppendInternalKey(&encoded, ParsedInternalKey(user_key, seq, vt));
return encoded;
}
static std::string Shorten(const std::string& s, const std::string& l) {
std::string scratch;
return ShortenedIndexBuilder::FindShortestInternalKeySeparator(
*BytewiseComparator(), s, l, &scratch)
.ToString();
}
static std::string ShortSuccessor(const std::string& s) {
std::string scratch;
return ShortenedIndexBuilder::FindShortInternalKeySuccessor(
*BytewiseComparator(), s, &scratch)
.ToString();
}
static void TestKey(const std::string& key, uint64_t seq, ValueType vt) {
std::string encoded = IKey(key, seq, vt);
Slice in(encoded);
ParsedInternalKey decoded("", 0, kTypeValue);
ASSERT_OK(ParseInternalKey(in, &decoded, true /* log_err_key */));
ASSERT_EQ(key, decoded.user_key.ToString());
ASSERT_EQ(seq, decoded.sequence);
ASSERT_EQ(vt, decoded.type);
ASSERT_NOK(ParseInternalKey(Slice("bar"), &decoded, true /* log_err_key */));
}
class FormatTest : public testing::Test {};
TEST_F(FormatTest, InternalKey_EncodeDecode) {
const char* keys[] = {"", "k", "hello", "longggggggggggggggggggggg"};
const uint64_t seq[] = {1,
2,
3,
(1ull << 8) - 1,
1ull << 8,
(1ull << 8) + 1,
(1ull << 16) - 1,
1ull << 16,
(1ull << 16) + 1,
(1ull << 32) - 1,
1ull << 32,
(1ull << 32) + 1};
for (unsigned int k = 0; k < sizeof(keys) / sizeof(keys[0]); k++) {
for (unsigned int s = 0; s < sizeof(seq) / sizeof(seq[0]); s++) {
TestKey(keys[k], seq[s], kTypeValue);
TestKey("hello", 1, kTypeDeletion);
}
}
}
TEST_F(FormatTest, InternalKeyShortSeparator) {
// When user keys are same
ASSERT_EQ(IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue), IKey("foo", 99, kTypeValue)));
ASSERT_EQ(
IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue), IKey("foo", 101, kTypeValue)));
ASSERT_EQ(
IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue), IKey("foo", 100, kTypeValue)));
ASSERT_EQ(
IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue), IKey("foo", 100, kTypeDeletion)));
// When user keys are misordered
ASSERT_EQ(IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue), IKey("bar", 99, kTypeValue)));
// When user keys are different, but correctly ordered
ASSERT_EQ(
IKey("g", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("foo", 100, kTypeValue), IKey("hello", 200, kTypeValue)));
ASSERT_EQ(IKey("ABC2", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("ABC1AAAAA", 100, kTypeValue),
IKey("ABC2ABB", 200, kTypeValue)));
ASSERT_EQ(IKey("AAA2", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("AAA1AAA", 100, kTypeValue),
IKey("AAA2AA", 200, kTypeValue)));
ASSERT_EQ(
IKey("AAA2", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("AAA1AAA", 100, kTypeValue), IKey("AAA4", 200, kTypeValue)));
ASSERT_EQ(
IKey("AAA1B", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("AAA1AAA", 100, kTypeValue), IKey("AAA2", 200, kTypeValue)));
ASSERT_EQ(IKey("AAA2", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("AAA1AAA", 100, kTypeValue),
IKey("AAA2A", 200, kTypeValue)));
ASSERT_EQ(
IKey("AAA1", 100, kTypeValue),
Shorten(IKey("AAA1", 100, kTypeValue), IKey("AAA2", 200, kTypeValue)));
// When start user key is prefix of limit user key
ASSERT_EQ(
IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue), IKey("foobar", 200, kTypeValue)));
// When limit user key is prefix of start user key
ASSERT_EQ(
IKey("foobar", 100, kTypeValue),
Shorten(IKey("foobar", 100, kTypeValue), IKey("foo", 200, kTypeValue)));
}
TEST_F(FormatTest, InternalKeyShortestSuccessor) {
ASSERT_EQ(IKey("g", kMaxSequenceNumber, kValueTypeForSeek),
ShortSuccessor(IKey("foo", 100, kTypeValue)));
ASSERT_EQ(IKey("\xff\xff", 100, kTypeValue),
ShortSuccessor(IKey("\xff\xff", 100, kTypeValue)));
}
TEST_F(FormatTest, IterKeyOperation) {
IterKey k;
const char p[] = "abcdefghijklmnopqrstuvwxyz";
const char q[] = "0123456789";
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string(""));
k.TrimAppend(0, p, 3);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abc"));
k.TrimAppend(1, p, 3);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("aabc"));
k.TrimAppend(0, p, 26);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz"));
k.TrimAppend(26, q, 10);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz0123456789"));
k.TrimAppend(36, q, 1);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz01234567890"));
k.TrimAppend(26, q, 1);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz0"));
// Size going up, memory allocation is triggered
k.TrimAppend(27, p, 26);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz0"
"abcdefghijklmnopqrstuvwxyz"));
}
TEST_F(FormatTest, IterKeyWithTimestampOperation) {
IterKey k;
k.SetUserKey("");
const char p[] = "abcdefghijklmnopqrstuvwxyz";
const char q[] = "0123456789";
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string(""));
size_t ts_sz = 8;
std::string min_timestamp(ts_sz, static_cast<unsigned char>(0));
k.TrimAppendWithTimestamp(0, p, 3, ts_sz);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
"abc" + min_timestamp);
k.TrimAppendWithTimestamp(1, p, 3, ts_sz);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
"aabc" + min_timestamp);
k.TrimAppendWithTimestamp(0, p, 26, ts_sz);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
"abcdefghijklmnopqrstuvwxyz" + min_timestamp);
k.TrimAppendWithTimestamp(26, q, 10, ts_sz);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
"abcdefghijklmnopqrstuvwxyz0123456789" + min_timestamp);
k.TrimAppendWithTimestamp(36, q, 1, ts_sz);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
"abcdefghijklmnopqrstuvwxyz01234567890" + min_timestamp);
k.TrimAppendWithTimestamp(26, q, 1, ts_sz);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
"abcdefghijklmnopqrstuvwxyz0" + min_timestamp);
k.TrimAppendWithTimestamp(27, p, 26, ts_sz);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
"abcdefghijklmnopqrstuvwxyz0"
"abcdefghijklmnopqrstuvwxyz" +
min_timestamp);
// IterKey holds an internal key, the last 8 bytes hold the key footer, the
// timestamp is expected to be added before the key footer.
std::string key_without_ts = "keywithoutts";
k.SetInternalKey(key_without_ts + min_timestamp + "internal");
ASSERT_EQ(std::string(k.GetInternalKey().data(), k.GetInternalKey().size()),
key_without_ts + min_timestamp + "internal");
k.TrimAppendWithTimestamp(0, p, 10, ts_sz);
ASSERT_EQ(std::string(k.GetInternalKey().data(), k.GetInternalKey().size()),
"ab" + min_timestamp + "cdefghij");
k.TrimAppendWithTimestamp(1, p, 8, ts_sz);
ASSERT_EQ(std::string(k.GetInternalKey().data(), k.GetInternalKey().size()),
"a" + min_timestamp + "abcdefgh");
k.TrimAppendWithTimestamp(9, p, 3, ts_sz);
ASSERT_EQ(std::string(k.GetInternalKey().data(), k.GetInternalKey().size()),
"aabc" + min_timestamp + "defghabc");
k.TrimAppendWithTimestamp(10, q, 10, ts_sz);
ASSERT_EQ(std::string(k.GetInternalKey().data(), k.GetInternalKey().size()),
"aabcdefgha01" + min_timestamp + "23456789");
k.TrimAppendWithTimestamp(20, q, 1, ts_sz);
ASSERT_EQ(std::string(k.GetInternalKey().data(), k.GetInternalKey().size()),
"aabcdefgha012" + min_timestamp + "34567890");
k.TrimAppendWithTimestamp(21, p, 26, ts_sz);
ASSERT_EQ(
std::string(k.GetInternalKey().data(), k.GetInternalKey().size()),
"aabcdefgha01234567890abcdefghijklmnopqr" + min_timestamp + "stuvwxyz");
}
TEST_F(FormatTest, UpdateInternalKey) {
std::string user_key("abcdefghijklmnopqrstuvwxyz");
uint64_t new_seq = 0x123456;
ValueType new_val_type = kTypeDeletion;
std::string ikey;
AppendInternalKey(&ikey, ParsedInternalKey(user_key, 100U, kTypeValue));
size_t ikey_size = ikey.size();
UpdateInternalKey(&ikey, new_seq, new_val_type);
ASSERT_EQ(ikey_size, ikey.size());
Slice in(ikey);
ParsedInternalKey decoded;
ASSERT_OK(ParseInternalKey(in, &decoded, true /* log_err_key */));
ASSERT_EQ(user_key, decoded.user_key.ToString());
ASSERT_EQ(new_seq, decoded.sequence);
ASSERT_EQ(new_val_type, decoded.type);
}
TEST_F(FormatTest, RangeTombstoneSerializeEndKey) {
RangeTombstone t("a", "b", 2);
InternalKey k("b", 3, kTypeValue);
const InternalKeyComparator cmp(BytewiseComparator());
ASSERT_LT(cmp.Compare(t.SerializeEndKey(), k), 0);
}
TEST_F(FormatTest, PadInternalKeyWithMinTimestamp) {
std::string orig_user_key = "foo";
std::string orig_internal_key = IKey(orig_user_key, 100, kTypeValue);
size_t ts_sz = 8;
std::string key_buf;
PadInternalKeyWithMinTimestamp(&key_buf, orig_internal_key, ts_sz);
ParsedInternalKey key_with_timestamp;
Slice in(key_buf);
ASSERT_OK(ParseInternalKey(in, &key_with_timestamp, true /*log_err_key*/));
std::string min_timestamp(ts_sz, static_cast<unsigned char>(0));
ASSERT_EQ(orig_user_key + min_timestamp, key_with_timestamp.user_key);
ASSERT_EQ(100, key_with_timestamp.sequence);
ASSERT_EQ(kTypeValue, key_with_timestamp.type);
}
TEST_F(FormatTest, StripTimestampFromInternalKey) {
std::string orig_user_key = "foo";
size_t ts_sz = 8;
std::string timestamp(ts_sz, static_cast<unsigned char>(0));
orig_user_key.append(timestamp.data(), timestamp.size());
std::string orig_internal_key = IKey(orig_user_key, 100, kTypeValue);
std::string key_buf;
StripTimestampFromInternalKey(&key_buf, orig_internal_key, ts_sz);
ParsedInternalKey key_without_timestamp;
Slice in(key_buf);
ASSERT_OK(ParseInternalKey(in, &key_without_timestamp, true /*log_err_key*/));
ASSERT_EQ("foo", key_without_timestamp.user_key);
ASSERT_EQ(100, key_without_timestamp.sequence);
ASSERT_EQ(kTypeValue, key_without_timestamp.type);
}
TEST_F(FormatTest, ReplaceInternalKeyWithMinTimestamp) {
std::string orig_user_key = "foo";
size_t ts_sz = 8;
orig_user_key.append(ts_sz, static_cast<unsigned char>(1));
std::string orig_internal_key = IKey(orig_user_key, 100, kTypeValue);
std::string key_buf;
ReplaceInternalKeyWithMinTimestamp(&key_buf, orig_internal_key, ts_sz);
ParsedInternalKey new_key;
Slice in(key_buf);
ASSERT_OK(ParseInternalKey(in, &new_key, true /*log_err_key*/));
std::string min_timestamp(ts_sz, static_cast<unsigned char>(0));
size_t ukey_diff_offset = new_key.user_key.difference_offset(orig_user_key);
ASSERT_EQ(min_timestamp,
Slice(new_key.user_key.data() + ukey_diff_offset, ts_sz));
ASSERT_EQ(orig_user_key.size(), new_key.user_key.size());
ASSERT_EQ(100, new_key.sequence);
ASSERT_EQ(kTypeValue, new_key.type);
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
RegisterCustomObjects(argc, argv);
return RUN_ALL_TESTS();
}
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