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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).
#include "db/blob/blob_counting_iterator.h"
#include <string>
#include <vector>
#include "db/blob/blob_garbage_meter.h"
#include "db/blob/blob_index.h"
#include "db/blob/blob_log_format.h"
#include "db/dbformat.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
#include "util/vector_iterator.h"
namespace ROCKSDB_NAMESPACE {
void CheckInFlow(const BlobGarbageMeter& blob_garbage_meter,
uint64_t blob_file_number, uint64_t count, uint64_t bytes) {
const auto& flows = blob_garbage_meter.flows();
const auto it = flows.find(blob_file_number);
if (it == flows.end()) {
ASSERT_EQ(count, 0);
ASSERT_EQ(bytes, 0);
return;
}
const auto& in = it->second.GetInFlow();
ASSERT_EQ(in.GetCount(), count);
ASSERT_EQ(in.GetBytes(), bytes);
}
TEST(BlobCountingIteratorTest, CountBlobs) {
// Note: the input consists of three key-values: two are blob references to
// different blob files, while the third one is a plain value.
constexpr char user_key0[] = "key0";
constexpr char user_key1[] = "key1";
constexpr char user_key2[] = "key2";
const std::vector<std::string> keys{
test::KeyStr(user_key0, 1, kTypeBlobIndex),
test::KeyStr(user_key1, 2, kTypeBlobIndex),
test::KeyStr(user_key2, 3, kTypeValue)};
constexpr uint64_t first_blob_file_number = 4;
constexpr uint64_t first_offset = 1000;
constexpr uint64_t first_size = 2000;
std::string first_blob_index;
BlobIndex::EncodeBlob(&first_blob_index, first_blob_file_number, first_offset,
first_size, kNoCompression);
constexpr uint64_t second_blob_file_number = 6;
constexpr uint64_t second_offset = 2000;
constexpr uint64_t second_size = 4000;
std::string second_blob_index;
BlobIndex::EncodeBlob(&second_blob_index, second_blob_file_number,
second_offset, second_size, kNoCompression);
const std::vector<std::string> values{first_blob_index, second_blob_index,
"raw_value"};
assert(keys.size() == values.size());
VectorIterator input(keys, values);
BlobGarbageMeter blob_garbage_meter;
BlobCountingIterator blob_counter(&input, &blob_garbage_meter);
constexpr uint64_t first_expected_bytes =
first_size +
BlobLogRecord::CalculateAdjustmentForRecordHeader(sizeof(user_key0) - 1);
constexpr uint64_t second_expected_bytes =
second_size +
BlobLogRecord::CalculateAdjustmentForRecordHeader(sizeof(user_key1) - 1);
// Call SeekToFirst and iterate forward
blob_counter.SeekToFirst();
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[0]);
ASSERT_EQ(blob_counter.user_key(), user_key0);
ASSERT_EQ(blob_counter.value(), values[0]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 1,
first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 0, 0);
blob_counter.Next();
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[1]);
ASSERT_EQ(blob_counter.user_key(), user_key1);
ASSERT_EQ(blob_counter.value(), values[1]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 1,
first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 1,
second_expected_bytes);
blob_counter.Next();
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[2]);
ASSERT_EQ(blob_counter.user_key(), user_key2);
ASSERT_EQ(blob_counter.value(), values[2]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 1,
first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 1,
second_expected_bytes);
blob_counter.Next();
ASSERT_FALSE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
CheckInFlow(blob_garbage_meter, first_blob_file_number, 1,
first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 1,
second_expected_bytes);
// Do it again using NextAndGetResult
blob_counter.SeekToFirst();
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[0]);
ASSERT_EQ(blob_counter.user_key(), user_key0);
ASSERT_EQ(blob_counter.value(), values[0]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
2 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 1,
second_expected_bytes);
{
IterateResult result;
ASSERT_TRUE(blob_counter.NextAndGetResult(&result));
ASSERT_EQ(result.key, keys[1]);
ASSERT_EQ(blob_counter.user_key(), user_key1);
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[1]);
ASSERT_EQ(blob_counter.value(), values[1]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
2 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 2,
2 * second_expected_bytes);
}
{
IterateResult result;
ASSERT_TRUE(blob_counter.NextAndGetResult(&result));
ASSERT_EQ(result.key, keys[2]);
ASSERT_EQ(blob_counter.user_key(), user_key2);
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[2]);
ASSERT_EQ(blob_counter.value(), values[2]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
2 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 2,
2 * second_expected_bytes);
}
{
IterateResult result;
ASSERT_FALSE(blob_counter.NextAndGetResult(&result));
ASSERT_FALSE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
2 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 2,
2 * second_expected_bytes);
}
// Call SeekToLast and iterate backward
blob_counter.SeekToLast();
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[2]);
ASSERT_EQ(blob_counter.user_key(), user_key2);
ASSERT_EQ(blob_counter.value(), values[2]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
2 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 2,
2 * second_expected_bytes);
blob_counter.Prev();
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[1]);
ASSERT_EQ(blob_counter.user_key(), user_key1);
ASSERT_EQ(blob_counter.value(), values[1]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
2 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 3,
3 * second_expected_bytes);
blob_counter.Prev();
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[0]);
ASSERT_EQ(blob_counter.user_key(), user_key0);
ASSERT_EQ(blob_counter.value(), values[0]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 3,
3 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 3,
3 * second_expected_bytes);
blob_counter.Prev();
ASSERT_FALSE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
CheckInFlow(blob_garbage_meter, first_blob_file_number, 3,
3 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 3,
3 * second_expected_bytes);
// Call Seek for all keys (plus one that's greater than all of them)
blob_counter.Seek(keys[0]);
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[0]);
ASSERT_EQ(blob_counter.user_key(), user_key0);
ASSERT_EQ(blob_counter.value(), values[0]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
4 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 3,
3 * second_expected_bytes);
blob_counter.Seek(keys[1]);
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[1]);
ASSERT_EQ(blob_counter.user_key(), user_key1);
ASSERT_EQ(blob_counter.value(), values[1]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
4 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
4 * second_expected_bytes);
blob_counter.Seek(keys[2]);
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[2]);
ASSERT_EQ(blob_counter.user_key(), user_key2);
ASSERT_EQ(blob_counter.value(), values[2]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
4 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
4 * second_expected_bytes);
blob_counter.Seek("zzz");
ASSERT_FALSE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
4 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
4 * second_expected_bytes);
// Call SeekForPrev for all keys (plus one that's less than all of them)
blob_counter.SeekForPrev("aaa");
ASSERT_FALSE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
4 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
4 * second_expected_bytes);
blob_counter.SeekForPrev(keys[0]);
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[0]);
ASSERT_EQ(blob_counter.user_key(), user_key0);
ASSERT_EQ(blob_counter.value(), values[0]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 5,
5 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
4 * second_expected_bytes);
blob_counter.SeekForPrev(keys[1]);
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[1]);
ASSERT_EQ(blob_counter.user_key(), user_key1);
ASSERT_EQ(blob_counter.value(), values[1]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 5,
5 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 5,
5 * second_expected_bytes);
blob_counter.SeekForPrev(keys[2]);
ASSERT_TRUE(blob_counter.Valid());
ASSERT_OK(blob_counter.status());
ASSERT_EQ(blob_counter.key(), keys[2]);
ASSERT_EQ(blob_counter.user_key(), user_key2);
ASSERT_EQ(blob_counter.value(), values[2]);
CheckInFlow(blob_garbage_meter, first_blob_file_number, 5,
5 * first_expected_bytes);
CheckInFlow(blob_garbage_meter, second_blob_file_number, 5,
5 * second_expected_bytes);
}
TEST(BlobCountingIteratorTest, CorruptBlobIndex) {
const std::vector<std::string> keys{
test::KeyStr("user_key", 1, kTypeBlobIndex)};
const std::vector<std::string> values{"i_am_not_a_blob_index"};
assert(keys.size() == values.size());
VectorIterator input(keys, values);
BlobGarbageMeter blob_garbage_meter;
BlobCountingIterator blob_counter(&input, &blob_garbage_meter);
blob_counter.SeekToFirst();
ASSERT_FALSE(blob_counter.Valid());
ASSERT_NOK(blob_counter.status());
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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