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rocksdb/db/wide/db_wide_basic_test.cc

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// Copyright (c) Meta Platforms, Inc. and affiliates.
// 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 <array>
#include <cctype>
#include <memory>
#include "db/db_test_util.h"
#include "port/stack_trace.h"
#include "test_util/testutil.h"
#include "util/overload.h"
#include "utilities/merge_operators.h"
namespace ROCKSDB_NAMESPACE {
class DBWideBasicTest : public DBTestBase {
protected:
explicit DBWideBasicTest()
: DBTestBase("db_wide_basic_test", /* env_do_fsync */ false) {}
};
TEST_F(DBWideBasicTest, PutEntity) {
Options options = GetDefaultOptions();
// Write a couple of wide-column entities and a plain old key-value, then read
// them back.
constexpr char first_key[] = "first";
constexpr char first_value_of_default_column[] = "hello";
WideColumns first_columns{
{kDefaultWideColumnName, first_value_of_default_column},
{"attr_name1", "foo"},
{"attr_name2", "bar"}};
constexpr char second_key[] = "second";
WideColumns second_columns{{"attr_one", "two"}, {"attr_three", "four"}};
constexpr char third_key[] = "third";
constexpr char third_value[] = "baz";
auto verify = [&]() {
const WideColumns expected_third_columns{
{kDefaultWideColumnName, third_value}};
{
PinnableSlice result;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), first_key,
&result));
ASSERT_EQ(result, first_value_of_default_column);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
first_key, &result));
ASSERT_EQ(result.columns(), first_columns);
}
{
PinnableSlice result;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), second_key,
&result));
ASSERT_TRUE(result.empty());
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
second_key, &result));
ASSERT_EQ(result.columns(), second_columns);
}
{
PinnableSlice result;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), third_key,
&result));
ASSERT_EQ(result, third_value);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
third_key, &result));
ASSERT_EQ(result.columns(), expected_third_columns);
}
{
constexpr size_t num_keys = 3;
std::array<Slice, num_keys> keys{{first_key, second_key, third_key}};
std::array<PinnableSlice, num_keys> values;
std::array<Status, num_keys> statuses;
db_->MultiGet(ReadOptions(), db_->DefaultColumnFamily(), num_keys,
keys.data(), values.data(), statuses.data());
ASSERT_OK(statuses[0]);
ASSERT_EQ(values[0], first_value_of_default_column);
ASSERT_OK(statuses[1]);
ASSERT_TRUE(values[1].empty());
ASSERT_OK(statuses[2]);
ASSERT_EQ(values[2], third_value);
}
{
constexpr size_t num_keys = 3;
std::array<Slice, num_keys> keys{{first_key, second_key, third_key}};
std::array<PinnableWideColumns, num_keys> results;
std::array<Status, num_keys> statuses;
db_->MultiGetEntity(ReadOptions(), db_->DefaultColumnFamily(), num_keys,
keys.data(), results.data(), statuses.data());
ASSERT_OK(statuses[0]);
ASSERT_EQ(results[0].columns(), first_columns);
ASSERT_OK(statuses[1]);
ASSERT_EQ(results[1].columns(), second_columns);
ASSERT_OK(statuses[2]);
ASSERT_EQ(results[2].columns(), expected_third_columns);
}
{
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
iter->SeekToFirst();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), first_key);
ASSERT_EQ(iter->value(), first_value_of_default_column);
ASSERT_EQ(iter->columns(), first_columns);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), second_key);
ASSERT_TRUE(iter->value().empty());
ASSERT_EQ(iter->columns(), second_columns);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), third_key);
ASSERT_EQ(iter->value(), third_value);
ASSERT_EQ(iter->columns(), expected_third_columns);
iter->Next();
ASSERT_FALSE(iter->Valid());
ASSERT_OK(iter->status());
iter->SeekToLast();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), third_key);
ASSERT_EQ(iter->value(), third_value);
ASSERT_EQ(iter->columns(), expected_third_columns);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), second_key);
ASSERT_TRUE(iter->value().empty());
ASSERT_EQ(iter->columns(), second_columns);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), first_key);
ASSERT_EQ(iter->value(), first_value_of_default_column);
ASSERT_EQ(iter->columns(), first_columns);
iter->Prev();
ASSERT_FALSE(iter->Valid());
ASSERT_OK(iter->status());
}
};
// Use the DB::PutEntity API to write the first entity
ASSERT_OK(db_->PutEntity(WriteOptions(), db_->DefaultColumnFamily(),
first_key, first_columns));
// Use WriteBatch to write the second entity
WriteBatch batch;
ASSERT_OK(
batch.PutEntity(db_->DefaultColumnFamily(), second_key, second_columns));
ASSERT_OK(db_->Write(WriteOptions(), &batch));
// Use Put to write the plain key-value
ASSERT_OK(db_->Put(WriteOptions(), db_->DefaultColumnFamily(), third_key,
third_value));
// Try reading from memtable
verify();
// Try reading after recovery
Close();
options.avoid_flush_during_recovery = true;
Reopen(options);
verify();
// Try reading from storage
ASSERT_OK(Flush());
verify();
// Reopen as Readonly DB and verify
Close();
ASSERT_OK(ReadOnlyReopen(options));
verify();
}
TEST_F(DBWideBasicTest, PutEntityColumnFamily) {
Options options = GetDefaultOptions();
CreateAndReopenWithCF({"corinthian"}, options);
// Use the DB::PutEntity API
constexpr char first_key[] = "first";
WideColumns first_columns{{"attr_name1", "foo"}, {"attr_name2", "bar"}};
ASSERT_OK(
db_->PutEntity(WriteOptions(), handles_[1], first_key, first_columns));
// Use WriteBatch
constexpr char second_key[] = "second";
WideColumns second_columns{{"attr_one", "two"}, {"attr_three", "four"}};
WriteBatch batch;
ASSERT_OK(batch.PutEntity(handles_[1], second_key, second_columns));
ASSERT_OK(db_->Write(WriteOptions(), &batch));
}
TEST_F(DBWideBasicTest, GetEntityAsPinnableAttributeGroups) {
Options options = GetDefaultOptions();
CreateAndReopenWithCF({"hot_cf", "cold_cf"}, options);
constexpr int kDefaultCfHandleIndex = 0;
constexpr int kHotCfHandleIndex = 1;
constexpr int kColdCfHandleIndex = 2;
constexpr char first_key[] = "first";
WideColumns first_default_columns{
{"default_cf_col_1_name", "first_key_default_cf_col_1_value"},
{"default_cf_col_2_name", "first_key_default_cf_col_2_value"}};
WideColumns first_hot_columns{
{"hot_cf_col_1_name", "first_key_hot_cf_col_1_value"},
{"hot_cf_col_2_name", "first_key_hot_cf_col_2_value"}};
WideColumns first_cold_columns{
{"cold_cf_col_1_name", "first_key_cold_cf_col_1_value"}};
constexpr char second_key[] = "second";
WideColumns second_hot_columns{
{"hot_cf_col_1_name", "second_key_hot_cf_col_1_value"}};
WideColumns second_cold_columns{
{"cold_cf_col_1_name", "second_key_cold_cf_col_1_value"}};
AttributeGroups first_key_attribute_groups{
AttributeGroup(handles_[kDefaultCfHandleIndex], first_default_columns),
AttributeGroup(handles_[kHotCfHandleIndex], first_hot_columns),
AttributeGroup(handles_[kColdCfHandleIndex], first_cold_columns)};
AttributeGroups second_key_attribute_groups{
AttributeGroup(handles_[kHotCfHandleIndex], second_hot_columns),
AttributeGroup(handles_[kColdCfHandleIndex], second_cold_columns)};
ASSERT_OK(
db_->PutEntity(WriteOptions(), first_key, first_key_attribute_groups));
ASSERT_OK(
db_->PutEntity(WriteOptions(), second_key, second_key_attribute_groups));
std::vector<ColumnFamilyHandle*> all_cfs = handles_;
std::vector<ColumnFamilyHandle*> default_and_hot_cfs{
{handles_[kDefaultCfHandleIndex], handles_[kHotCfHandleIndex]}};
std::vector<ColumnFamilyHandle*> hot_and_cold_cfs{
{handles_[kHotCfHandleIndex], handles_[kColdCfHandleIndex]}};
std::vector<ColumnFamilyHandle*> default_null_and_hot_cfs{
handles_[kDefaultCfHandleIndex], nullptr, handles_[kHotCfHandleIndex],
nullptr};
auto create_result =
[](const std::vector<ColumnFamilyHandle*>& column_families)
-> PinnableAttributeGroups {
PinnableAttributeGroups result;
for (size_t i = 0; i < column_families.size(); ++i) {
result.emplace_back(column_families[i]);
}
return result;
};
{
// Case 1. Invalid Argument (passing in null CF)
AttributeGroups ag{
AttributeGroup(nullptr, first_default_columns),
AttributeGroup(handles_[kHotCfHandleIndex], first_hot_columns)};
ASSERT_NOK(db_->PutEntity(WriteOptions(), first_key, ag));
PinnableAttributeGroups result = create_result(default_null_and_hot_cfs);
Status s = db_->GetEntity(ReadOptions(), first_key, &result);
ASSERT_NOK(s);
ASSERT_TRUE(s.IsInvalidArgument());
// Valid CF, but failed with Incomplete status due to other attribute groups
ASSERT_TRUE(result[0].status().IsIncomplete());
// Null CF
ASSERT_TRUE(result[1].status().IsInvalidArgument());
// Valid CF, but failed with Incomplete status due to other attribute groups
ASSERT_TRUE(result[2].status().IsIncomplete());
// Null CF, but failed with Incomplete status because the nullcheck break
// out early in the loop
ASSERT_TRUE(result[3].status().IsIncomplete());
}
{
// Case 2. Get first key from default cf and hot_cf and second key from
// hot_cf and cold_cf
constexpr size_t num_column_families = 2;
PinnableAttributeGroups first_key_result =
create_result(default_and_hot_cfs);
PinnableAttributeGroups second_key_result = create_result(hot_and_cold_cfs);
// GetEntity for first_key
ASSERT_OK(db_->GetEntity(ReadOptions(), first_key, &first_key_result));
ASSERT_EQ(num_column_families, first_key_result.size());
// We expect to get values for all keys and CFs
for (size_t i = 0; i < num_column_families; ++i) {
ASSERT_OK(first_key_result[i].status());
}
// verify values for first key (default cf and hot cf)
ASSERT_EQ(first_default_columns, first_key_result[0].columns());
ASSERT_EQ(first_hot_columns, first_key_result[1].columns());
// GetEntity for second_key
ASSERT_OK(db_->GetEntity(ReadOptions(), second_key, &second_key_result));
ASSERT_EQ(num_column_families, second_key_result.size());
// We expect to get values for all keys and CFs
for (size_t i = 0; i < num_column_families; ++i) {
ASSERT_OK(second_key_result[i].status());
}
// verify values for second key (hot cf and cold cf)
ASSERT_EQ(second_hot_columns, second_key_result[0].columns());
ASSERT_EQ(second_cold_columns, second_key_result[1].columns());
}
{
// Case 3. Get first key and second key from all cfs. For the second key, we
// don't expect to get columns from default cf.
constexpr size_t num_column_families = 3;
PinnableAttributeGroups first_key_result = create_result(all_cfs);
PinnableAttributeGroups second_key_result = create_result(all_cfs);
// GetEntity for first_key
ASSERT_OK(db_->GetEntity(ReadOptions(), first_key, &first_key_result));
ASSERT_EQ(num_column_families, first_key_result.size());
// We expect to get values for all keys and CFs
for (size_t i = 0; i < num_column_families; ++i) {
ASSERT_OK(first_key_result[i].status());
}
// verify values for first key
ASSERT_EQ(first_default_columns, first_key_result[0].columns());
ASSERT_EQ(first_hot_columns, first_key_result[1].columns());
ASSERT_EQ(first_cold_columns, first_key_result[2].columns());
// GetEntity for second_key
ASSERT_OK(db_->GetEntity(ReadOptions(), second_key, &second_key_result));
ASSERT_EQ(num_column_families, second_key_result.size());
// key does not exist in default cf
ASSERT_NOK(second_key_result[0].status());
ASSERT_TRUE(second_key_result[0].status().IsNotFound());
// verify values for second key (hot cf and cold cf)
ASSERT_OK(second_key_result[1].status());
ASSERT_OK(second_key_result[2].status());
ASSERT_EQ(second_hot_columns, second_key_result[1].columns());
ASSERT_EQ(second_cold_columns, second_key_result[2].columns());
}
}
TEST_F(DBWideBasicTest, MultiCFMultiGetEntity) {
Options options = GetDefaultOptions();
CreateAndReopenWithCF({"corinthian"}, options);
constexpr char first_key[] = "first";
WideColumns first_columns{{"attr_name1", "foo"}, {"attr_name2", "bar"}};
ASSERT_OK(db_->PutEntity(WriteOptions(), db_->DefaultColumnFamily(),
first_key, first_columns));
constexpr char second_key[] = "second";
WideColumns second_columns{{"attr_one", "two"}, {"attr_three", "four"}};
ASSERT_OK(
db_->PutEntity(WriteOptions(), handles_[1], second_key, second_columns));
constexpr size_t num_keys = 2;
std::array<ColumnFamilyHandle*, num_keys> column_families{
{db_->DefaultColumnFamily(), handles_[1]}};
std::array<Slice, num_keys> keys{{first_key, second_key}};
std::array<PinnableWideColumns, num_keys> results;
std::array<Status, num_keys> statuses;
db_->MultiGetEntity(ReadOptions(), num_keys, column_families.data(),
keys.data(), results.data(), statuses.data());
ASSERT_OK(statuses[0]);
ASSERT_EQ(results[0].columns(), first_columns);
ASSERT_OK(statuses[1]);
ASSERT_EQ(results[1].columns(), second_columns);
}
TEST_F(DBWideBasicTest, MultiCFMultiGetEntityAsPinnableAttributeGroups) {
Options options = GetDefaultOptions();
CreateAndReopenWithCF({"hot_cf", "cold_cf"}, options);
constexpr int kDefaultCfHandleIndex = 0;
constexpr int kHotCfHandleIndex = 1;
constexpr int kColdCfHandleIndex = 2;
constexpr char first_key[] = "first";
WideColumns first_default_columns{
{"default_cf_col_1_name", "first_key_default_cf_col_1_value"},
{"default_cf_col_2_name", "first_key_default_cf_col_2_value"}};
WideColumns first_hot_columns{
{"hot_cf_col_1_name", "first_key_hot_cf_col_1_value"},
{"hot_cf_col_2_name", "first_key_hot_cf_col_2_value"}};
WideColumns first_cold_columns{
{"cold_cf_col_1_name", "first_key_cold_cf_col_1_value"}};
constexpr char second_key[] = "second";
WideColumns second_hot_columns{
{"hot_cf_col_1_name", "second_key_hot_cf_col_1_value"}};
WideColumns second_cold_columns{
{"cold_cf_col_1_name", "second_key_cold_cf_col_1_value"}};
AttributeGroups first_key_attribute_groups{
AttributeGroup(handles_[kDefaultCfHandleIndex], first_default_columns),
AttributeGroup(handles_[kHotCfHandleIndex], first_hot_columns),
AttributeGroup(handles_[kColdCfHandleIndex], first_cold_columns)};
AttributeGroups second_key_attribute_groups{
AttributeGroup(handles_[kHotCfHandleIndex], second_hot_columns),
AttributeGroup(handles_[kColdCfHandleIndex], second_cold_columns)};
ASSERT_OK(
db_->PutEntity(WriteOptions(), first_key, first_key_attribute_groups));
ASSERT_OK(
db_->PutEntity(WriteOptions(), second_key, second_key_attribute_groups));
constexpr size_t num_keys = 2;
std::array<Slice, num_keys> keys = {first_key, second_key};
std::vector<ColumnFamilyHandle*> all_cfs = handles_;
std::vector<ColumnFamilyHandle*> default_and_hot_cfs{
{handles_[kDefaultCfHandleIndex], handles_[kHotCfHandleIndex]}};
std::vector<ColumnFamilyHandle*> hot_and_cold_cfs{
{handles_[kHotCfHandleIndex], handles_[kColdCfHandleIndex]}};
std::vector<ColumnFamilyHandle*> null_and_hot_cfs{
nullptr, handles_[kHotCfHandleIndex], nullptr};
auto create_result =
[](const std::vector<ColumnFamilyHandle*>& column_families)
-> PinnableAttributeGroups {
PinnableAttributeGroups result;
for (size_t i = 0; i < column_families.size(); ++i) {
result.emplace_back(column_families[i]);
}
return result;
};
{
// Check for invalid read option argument
ReadOptions read_options;
read_options.io_activity = Env::IOActivity::kGetEntity;
std::vector<PinnableAttributeGroups> results;
for (size_t i = 0; i < num_keys; ++i) {
results.emplace_back(create_result(all_cfs));
}
db_->MultiGetEntity(read_options, num_keys, keys.data(), results.data());
for (size_t i = 0; i < num_keys; ++i) {
for (size_t j = 0; j < all_cfs.size(); ++j) {
ASSERT_NOK(results[i][j].status());
ASSERT_TRUE(results[i][j].status().IsInvalidArgument());
}
}
// Check for invalid column family in Attribute Group result
results.clear();
results.emplace_back(create_result(null_and_hot_cfs));
results.emplace_back(create_result(all_cfs));
db_->MultiGetEntity(ReadOptions(), num_keys, keys.data(), results.data());
// First one failed due to null CFs in the AttributeGroup
// Null CF
ASSERT_NOK(results[0][0].status());
ASSERT_TRUE(results[0][0].status().IsInvalidArgument());
// Valid CF, but failed with incomplete status because of other attribute
// groups
ASSERT_NOK(results[0][1].status());
ASSERT_TRUE(results[0][1].status().IsIncomplete());
// Null CF
ASSERT_NOK(results[0][2].status());
ASSERT_TRUE(results[0][2].status().IsInvalidArgument());
// Second one failed with Incomplete because first one failed
ASSERT_NOK(results[1][0].status());
ASSERT_TRUE(results[1][0].status().IsIncomplete());
ASSERT_NOK(results[1][1].status());
ASSERT_TRUE(results[1][1].status().IsIncomplete());
ASSERT_NOK(results[1][2].status());
ASSERT_TRUE(results[1][2].status().IsIncomplete());
}
{
// Case 1. Get first key from default cf and hot_cf and second key from
// hot_cf and cold_cf
std::vector<PinnableAttributeGroups> results;
PinnableAttributeGroups first_key_result =
create_result(default_and_hot_cfs);
PinnableAttributeGroups second_key_result = create_result(hot_and_cold_cfs);
results.emplace_back(std::move(first_key_result));
results.emplace_back(std::move(second_key_result));
db_->MultiGetEntity(ReadOptions(), num_keys, keys.data(), results.data());
ASSERT_EQ(2, results.size());
// We expect to get values for all keys and CFs
for (size_t i = 0; i < num_keys; ++i) {
for (size_t j = 0; j < 2; ++j) {
ASSERT_OK(results[i][j].status());
}
}
// verify values for first key (default cf and hot cf)
ASSERT_EQ(2, results[0].size());
ASSERT_EQ(first_default_columns, results[0][0].columns());
ASSERT_EQ(first_hot_columns, results[0][1].columns());
// verify values for second key (hot cf and cold cf)
ASSERT_EQ(2, results[1].size());
ASSERT_EQ(second_hot_columns, results[1][0].columns());
ASSERT_EQ(second_cold_columns, results[1][1].columns());
}
{
// Case 2. Get first key and second key from all cfs. For the second key, we
// don't expect to get columns from default cf.
std::vector<PinnableAttributeGroups> results;
PinnableAttributeGroups first_key_result = create_result(all_cfs);
PinnableAttributeGroups second_key_result = create_result(all_cfs);
results.emplace_back(std::move(first_key_result));
results.emplace_back(std::move(second_key_result));
db_->MultiGetEntity(ReadOptions(), num_keys, keys.data(), results.data());
// verify first key
for (size_t i = 0; i < all_cfs.size(); ++i) {
ASSERT_OK(results[0][i].status());
}
ASSERT_EQ(3, results[0].size());
ASSERT_EQ(first_default_columns, results[0][0].columns());
ASSERT_EQ(first_hot_columns, results[0][1].columns());
ASSERT_EQ(first_cold_columns, results[0][2].columns());
// verify second key
// key does not exist in default cf
ASSERT_NOK(results[1][0].status());
ASSERT_TRUE(results[1][0].status().IsNotFound());
ASSERT_TRUE(results[1][0].columns().empty());
// key exists in hot_cf and cold_cf
ASSERT_OK(results[1][1].status());
ASSERT_EQ(second_hot_columns, results[1][1].columns());
ASSERT_OK(results[1][2].status());
ASSERT_EQ(second_cold_columns, results[1][2].columns());
}
}
TEST_F(DBWideBasicTest, MergePlainKeyValue) {
Options options = GetDefaultOptions();
options.create_if_missing = true;
options.merge_operator = MergeOperators::CreateStringAppendOperator();
Reopen(options);
// Put + Merge
constexpr char first_key[] = "first";
constexpr char first_base_value[] = "hello";
constexpr char first_merge_op[] = "world";
// Delete + Merge
constexpr char second_key[] = "second";
constexpr char second_merge_op[] = "foo";
// Merge without any preceding KV
constexpr char third_key[] = "third";
constexpr char third_merge_op[] = "bar";
auto write_base = [&]() {
// Write "base" KVs: a Put for the 1st key and a Delete for the 2nd one;
// note there is no "base" KV for the 3rd
ASSERT_OK(db_->Put(WriteOptions(), db_->DefaultColumnFamily(), first_key,
first_base_value));
ASSERT_OK(
db_->Delete(WriteOptions(), db_->DefaultColumnFamily(), second_key));
};
auto write_merge = [&]() {
// Write Merge operands
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), first_key,
first_merge_op));
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), second_key,
second_merge_op));
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), third_key,
third_merge_op));
};
const std::string expected_first_column(std::string(first_base_value) + "," +
first_merge_op);
const WideColumns expected_first_columns{
{kDefaultWideColumnName, expected_first_column}};
const WideColumns expected_second_columns{
{kDefaultWideColumnName, second_merge_op}};
const WideColumns expected_third_columns{
{kDefaultWideColumnName, third_merge_op}};
auto verify = [&]() {
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
first_key, &result));
ASSERT_EQ(result.columns(), expected_first_columns);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
second_key, &result));
ASSERT_EQ(result.columns(), expected_second_columns);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
third_key, &result));
ASSERT_EQ(result.columns(), expected_third_columns);
}
{
constexpr size_t num_keys = 3;
std::array<Slice, num_keys> keys{{first_key, second_key, third_key}};
std::array<PinnableWideColumns, num_keys> results;
std::array<Status, num_keys> statuses;
db_->MultiGetEntity(ReadOptions(), db_->DefaultColumnFamily(), num_keys,
keys.data(), results.data(), statuses.data());
ASSERT_OK(statuses[0]);
ASSERT_EQ(results[0].columns(), expected_first_columns);
ASSERT_OK(statuses[1]);
ASSERT_EQ(results[1].columns(), expected_second_columns);
ASSERT_OK(statuses[2]);
ASSERT_EQ(results[2].columns(), expected_third_columns);
}
{
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
iter->SeekToFirst();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), first_key);
ASSERT_EQ(iter->value(), expected_first_columns[0].value());
ASSERT_EQ(iter->columns(), expected_first_columns);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), second_key);
ASSERT_EQ(iter->value(), expected_second_columns[0].value());
ASSERT_EQ(iter->columns(), expected_second_columns);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), third_key);
ASSERT_EQ(iter->value(), expected_third_columns[0].value());
ASSERT_EQ(iter->columns(), expected_third_columns);
iter->Next();
ASSERT_FALSE(iter->Valid());
ASSERT_OK(iter->status());
iter->SeekToLast();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), third_key);
ASSERT_EQ(iter->value(), expected_third_columns[0].value());
ASSERT_EQ(iter->columns(), expected_third_columns);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), second_key);
ASSERT_EQ(iter->value(), expected_second_columns[0].value());
ASSERT_EQ(iter->columns(), expected_second_columns);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), first_key);
ASSERT_EQ(iter->value(), expected_first_columns[0].value());
ASSERT_EQ(iter->columns(), expected_first_columns);
iter->Prev();
ASSERT_FALSE(iter->Valid());
ASSERT_OK(iter->status());
}
};
{
// Base KVs (if any) and Merge operands both in memtable (note: we take a
// snapshot in between to make sure they do not get reconciled during the
// subsequent flush)
write_base();
ManagedSnapshot snapshot(db_);
write_merge();
verify();
// Base KVs (if any) and Merge operands both in storage
ASSERT_OK(Flush());
verify();
}
// Base KVs (if any) in storage, Merge operands in memtable
DestroyAndReopen(options);
write_base();
ASSERT_OK(Flush());
write_merge();
verify();
}
TEST_F(DBWideBasicTest, MergeEntity) {
Options options = GetDefaultOptions();
options.create_if_missing = true;
const std::string delim("|");
options.merge_operator = MergeOperators::CreateStringAppendOperator(delim);
Reopen(options);
// Test Merge with two entities: one that has the default column and one that
// doesn't
constexpr char first_key[] = "first";
WideColumns first_columns{{kDefaultWideColumnName, "a"},
{"attr_name1", "foo"},
{"attr_name2", "bar"}};
constexpr char first_merge_operand[] = "bla1";
constexpr char second_key[] = "second";
WideColumns second_columns{{"attr_one", "two"}, {"attr_three", "four"}};
constexpr char second_merge_operand[] = "bla2";
auto write_base = [&]() {
// Use the DB::PutEntity API
ASSERT_OK(db_->PutEntity(WriteOptions(), db_->DefaultColumnFamily(),
first_key, first_columns));
// Use WriteBatch
WriteBatch batch;
ASSERT_OK(batch.PutEntity(db_->DefaultColumnFamily(), second_key,
second_columns));
ASSERT_OK(db_->Write(WriteOptions(), &batch));
};
auto write_merge = [&]() {
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), first_key,
first_merge_operand));
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), second_key,
second_merge_operand));
};
const std::string first_expected_default(first_columns[0].value().ToString() +
delim + first_merge_operand);
const std::string second_expected_default(delim + second_merge_operand);
auto verify_basic = [&]() {
WideColumns first_expected_columns{
{kDefaultWideColumnName, first_expected_default},
first_columns[1],
first_columns[2]};
WideColumns second_expected_columns{
{kDefaultWideColumnName, second_expected_default},
second_columns[0],
second_columns[1]};
{
PinnableSlice result;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), first_key,
&result));
ASSERT_EQ(result, first_expected_default);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
first_key, &result));
ASSERT_EQ(result.columns(), first_expected_columns);
}
{
PinnableSlice result;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), second_key,
&result));
ASSERT_EQ(result, second_expected_default);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
second_key, &result));
ASSERT_EQ(result.columns(), second_expected_columns);
}
{
constexpr size_t num_keys = 2;
std::array<Slice, num_keys> keys{{first_key, second_key}};
std::array<PinnableSlice, num_keys> values;
std::array<Status, num_keys> statuses;
db_->MultiGet(ReadOptions(), db_->DefaultColumnFamily(), num_keys,
keys.data(), values.data(), statuses.data());
ASSERT_EQ(values[0], first_expected_default);
ASSERT_OK(statuses[0]);
ASSERT_EQ(values[1], second_expected_default);
ASSERT_OK(statuses[1]);
}
{
constexpr size_t num_keys = 2;
std::array<Slice, num_keys> keys{{first_key, second_key}};
std::array<PinnableWideColumns, num_keys> results;
std::array<Status, num_keys> statuses;
db_->MultiGetEntity(ReadOptions(), db_->DefaultColumnFamily(), num_keys,
keys.data(), results.data(), statuses.data());
ASSERT_OK(statuses[0]);
ASSERT_EQ(results[0].columns(), first_expected_columns);
ASSERT_OK(statuses[1]);
ASSERT_EQ(results[1].columns(), second_expected_columns);
}
{
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
iter->SeekToFirst();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), first_key);
ASSERT_EQ(iter->value(), first_expected_default);
ASSERT_EQ(iter->columns(), first_expected_columns);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), second_key);
ASSERT_EQ(iter->value(), second_expected_default);
ASSERT_EQ(iter->columns(), second_expected_columns);
iter->Next();
ASSERT_FALSE(iter->Valid());
ASSERT_OK(iter->status());
iter->SeekToLast();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), second_key);
ASSERT_EQ(iter->value(), second_expected_default);
ASSERT_EQ(iter->columns(), second_expected_columns);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), first_key);
ASSERT_EQ(iter->value(), first_expected_default);
ASSERT_EQ(iter->columns(), first_expected_columns);
iter->Prev();
ASSERT_FALSE(iter->Valid());
ASSERT_OK(iter->status());
}
};
auto verify_merge_ops_pre_compaction = [&]() {
constexpr size_t num_merge_operands = 2;
GetMergeOperandsOptions get_merge_opts;
get_merge_opts.expected_max_number_of_operands = num_merge_operands;
{
std::array<PinnableSlice, num_merge_operands> merge_operands;
int number_of_operands = 0;
ASSERT_OK(db_->GetMergeOperands(ReadOptions(), db_->DefaultColumnFamily(),
first_key, merge_operands.data(),
&get_merge_opts, &number_of_operands));
ASSERT_EQ(number_of_operands, num_merge_operands);
ASSERT_EQ(merge_operands[0], first_columns[0].value());
ASSERT_EQ(merge_operands[1], first_merge_operand);
}
{
std::array<PinnableSlice, num_merge_operands> merge_operands;
int number_of_operands = 0;
ASSERT_OK(db_->GetMergeOperands(ReadOptions(), db_->DefaultColumnFamily(),
second_key, merge_operands.data(),
&get_merge_opts, &number_of_operands));
ASSERT_EQ(number_of_operands, num_merge_operands);
ASSERT_TRUE(merge_operands[0].empty());
ASSERT_EQ(merge_operands[1], second_merge_operand);
}
};
auto verify_merge_ops_post_compaction = [&]() {
constexpr size_t num_merge_operands = 1;
GetMergeOperandsOptions get_merge_opts;
get_merge_opts.expected_max_number_of_operands = num_merge_operands;
{
std::array<PinnableSlice, num_merge_operands> merge_operands;
int number_of_operands = 0;
ASSERT_OK(db_->GetMergeOperands(ReadOptions(), db_->DefaultColumnFamily(),
first_key, merge_operands.data(),
&get_merge_opts, &number_of_operands));
ASSERT_EQ(number_of_operands, num_merge_operands);
ASSERT_EQ(merge_operands[0], first_expected_default);
}
{
std::array<PinnableSlice, num_merge_operands> merge_operands;
int number_of_operands = 0;
ASSERT_OK(db_->GetMergeOperands(ReadOptions(), db_->DefaultColumnFamily(),
second_key, merge_operands.data(),
&get_merge_opts, &number_of_operands));
ASSERT_EQ(number_of_operands, num_merge_operands);
ASSERT_EQ(merge_operands[0], second_expected_default);
}
};
{
// Base KVs and Merge operands both in memtable (note: we take a snapshot in
// between to make sure they do not get reconciled during the subsequent
// flush)
write_base();
ManagedSnapshot snapshot(db_);
write_merge();
verify_basic();
verify_merge_ops_pre_compaction();
// Base KVs and Merge operands both in storage
ASSERT_OK(Flush());
verify_basic();
verify_merge_ops_pre_compaction();
}
// Base KVs in storage, Merge operands in memtable
DestroyAndReopen(options);
write_base();
ASSERT_OK(Flush());
write_merge();
verify_basic();
verify_merge_ops_pre_compaction();
// Flush and compact
ASSERT_OK(Flush());
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), /* begin */ nullptr,
/* end */ nullptr));
verify_basic();
verify_merge_ops_post_compaction();
}
class DBWideMergeV3Test : public DBWideBasicTest {
protected:
void RunTest(const WideColumns& first_expected,
const WideColumns& second_expected,
const WideColumns& third_expected) {
// Note: we'll take some snapshots to prevent merging during flush
snapshots_.reserve(6);
// Test reading from memtables
WriteKeyValues();
VerifyKeyValues(first_expected, second_expected, third_expected);
VerifyMergeOperandCount(first_key, 2);
VerifyMergeOperandCount(second_key, 3);
VerifyMergeOperandCount(third_key, 3);
// Test reading from SST files
ASSERT_OK(Flush());
VerifyKeyValues(first_expected, second_expected, third_expected);
VerifyMergeOperandCount(first_key, 2);
VerifyMergeOperandCount(second_key, 3);
VerifyMergeOperandCount(third_key, 3);
// Test reading from SSTs after compaction. Note that we write the same KVs
// and flush again so we have two overlapping files. We also release the
// snapshots so that the compaction can merge all keys.
WriteKeyValues();
ASSERT_OK(Flush());
snapshots_.clear();
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), /* begin */ nullptr,
/* end */ nullptr));
VerifyKeyValues(first_expected, second_expected, third_expected);
VerifyMergeOperandCount(first_key, 1);
VerifyMergeOperandCount(second_key, 1);
VerifyMergeOperandCount(third_key, 1);
}
void WriteKeyValues() {
// Base values
ASSERT_OK(db_->Delete(WriteOptions(), db_->DefaultColumnFamily(),
first_key)); // no base value
ASSERT_OK(db_->Put(WriteOptions(), db_->DefaultColumnFamily(), second_key,
second_base_value)); // plain base value
ASSERT_OK(db_->PutEntity(WriteOptions(), db_->DefaultColumnFamily(),
third_key,
third_columns)); // wide-column base value
snapshots_.emplace_back(db_);
// First round of merge operands
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), first_key,
first_merge_op1));
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), second_key,
second_merge_op1));
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), third_key,
third_merge_op1));
snapshots_.emplace_back(db_);
// Second round of merge operands
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), first_key,
first_merge_op2));
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), second_key,
second_merge_op2));
ASSERT_OK(db_->Merge(WriteOptions(), db_->DefaultColumnFamily(), third_key,
third_merge_op2));
snapshots_.emplace_back(db_);
}
void VerifyKeyValues(const WideColumns& first_expected,
const WideColumns& second_expected,
const WideColumns& third_expected) {
assert(!first_expected.empty() &&
first_expected[0].name() == kDefaultWideColumnName);
assert(!second_expected.empty() &&
second_expected[0].name() == kDefaultWideColumnName);
assert(!third_expected.empty() &&
third_expected[0].name() == kDefaultWideColumnName);
// Get
{
PinnableSlice result;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), first_key,
&result));
ASSERT_EQ(result, first_expected[0].value());
}
{
PinnableSlice result;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), second_key,
&result));
ASSERT_EQ(result, second_expected[0].value());
}
{
PinnableSlice result;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), third_key,
&result));
ASSERT_EQ(result, third_expected[0].value());
}
// MultiGet
{
std::array<Slice, num_keys> keys{{first_key, second_key, third_key}};
std::array<PinnableSlice, num_keys> values;
std::array<Status, num_keys> statuses;
db_->MultiGet(ReadOptions(), db_->DefaultColumnFamily(), num_keys,
keys.data(), values.data(), statuses.data());
ASSERT_OK(statuses[0]);
ASSERT_EQ(values[0], first_expected[0].value());
ASSERT_OK(statuses[1]);
ASSERT_EQ(values[1], second_expected[0].value());
ASSERT_OK(statuses[2]);
ASSERT_EQ(values[2], third_expected[0].value());
}
// GetEntity
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
first_key, &result));
ASSERT_EQ(result.columns(), first_expected);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
second_key, &result));
ASSERT_EQ(result.columns(), second_expected);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
third_key, &result));
ASSERT_EQ(result.columns(), third_expected);
}
// MultiGetEntity
{
std::array<Slice, num_keys> keys{{first_key, second_key, third_key}};
std::array<PinnableWideColumns, num_keys> results;
std::array<Status, num_keys> statuses;
db_->MultiGetEntity(ReadOptions(), db_->DefaultColumnFamily(), num_keys,
keys.data(), results.data(), statuses.data());
ASSERT_OK(statuses[0]);
ASSERT_EQ(results[0].columns(), first_expected);
ASSERT_OK(statuses[1]);
ASSERT_EQ(results[1].columns(), second_expected);
ASSERT_OK(statuses[2]);
ASSERT_EQ(results[2].columns(), third_expected);
}
// Iterator
{
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
iter->SeekToFirst();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), first_key);
ASSERT_EQ(iter->value(), first_expected[0].value());
ASSERT_EQ(iter->columns(), first_expected);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), second_key);
ASSERT_EQ(iter->value(), second_expected[0].value());
ASSERT_EQ(iter->columns(), second_expected);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), third_key);
ASSERT_EQ(iter->value(), third_expected[0].value());
ASSERT_EQ(iter->columns(), third_expected);
iter->Next();
ASSERT_FALSE(iter->Valid());
ASSERT_OK(iter->status());
iter->SeekToLast();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), third_key);
ASSERT_EQ(iter->value(), third_expected[0].value());
ASSERT_EQ(iter->columns(), third_expected);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), second_key);
ASSERT_EQ(iter->value(), second_expected[0].value());
ASSERT_EQ(iter->columns(), second_expected);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ(iter->key(), first_key);
ASSERT_EQ(iter->value(), first_expected[0].value());
ASSERT_EQ(iter->columns(), first_expected);
iter->Prev();
ASSERT_FALSE(iter->Valid());
ASSERT_OK(iter->status());
}
}
void VerifyMergeOperandCount(const Slice& key, int expected_merge_ops) {
GetMergeOperandsOptions get_merge_opts;
get_merge_opts.expected_max_number_of_operands = expected_merge_ops;
std::vector<PinnableSlice> merge_operands(expected_merge_ops);
int number_of_operands = 0;
ASSERT_OK(db_->GetMergeOperands(ReadOptions(), db_->DefaultColumnFamily(),
key, merge_operands.data(), &get_merge_opts,
&number_of_operands));
ASSERT_EQ(number_of_operands, expected_merge_ops);
}
std::vector<ManagedSnapshot> snapshots_;
static constexpr size_t num_keys = 3;
static constexpr char first_key[] = "first";
static constexpr char first_merge_op1[] = "hello";
static constexpr char first_merge_op1_upper[] = "HELLO";
static constexpr char first_merge_op2[] = "world";
static constexpr char first_merge_op2_upper[] = "WORLD";
static constexpr char second_key[] = "second";
static constexpr char second_base_value[] = "foo";
static constexpr char second_base_value_upper[] = "FOO";
static constexpr char second_merge_op1[] = "bar";
static constexpr char second_merge_op1_upper[] = "BAR";
static constexpr char second_merge_op2[] = "baz";
static constexpr char second_merge_op2_upper[] = "BAZ";
static constexpr char third_key[] = "third";
static const WideColumns third_columns;
static constexpr char third_merge_op1[] = "three";
static constexpr char third_merge_op1_upper[] = "THREE";
static constexpr char third_merge_op2[] = "four";
static constexpr char third_merge_op2_upper[] = "FOUR";
};
const WideColumns DBWideMergeV3Test::third_columns{{"one", "ONE"},
{"two", "TWO"}};
TEST_F(DBWideMergeV3Test, MergeV3WideColumnOutput) {
// A test merge operator that always returns a wide-column result. It adds any
// base values and merge operands to a single wide-column entity, and converts
// all column values to uppercase. In addition, it puts "none", "plain", or
// "wide" into the value of the default column depending on the type of the
// base value (if any).
static constexpr char kNone[] = "none";
static constexpr char kPlain[] = "plain";
static constexpr char kWide[] = "wide";
class WideColumnOutputMergeOperator : public MergeOperator {
public:
bool FullMergeV3(const MergeOperationInputV3& merge_in,
MergeOperationOutputV3* merge_out) const override {
assert(merge_out);
merge_out->new_value = MergeOperationOutputV3::NewColumns();
auto& new_columns =
std::get<MergeOperationOutputV3::NewColumns>(merge_out->new_value);
auto upper = [](std::string str) {
for (char& c : str) {
c = static_cast<char>(std::toupper(static_cast<unsigned char>(c)));
}
return str;
};
std::visit(overload{[&](const std::monostate&) {
new_columns.emplace_back(
kDefaultWideColumnName.ToString(), kNone);
},
[&](const Slice& value) {
new_columns.emplace_back(
kDefaultWideColumnName.ToString(), kPlain);
const std::string val = value.ToString();
new_columns.emplace_back(val, upper(val));
},
[&](const WideColumns& columns) {
new_columns.emplace_back(
kDefaultWideColumnName.ToString(), kWide);
for (const auto& column : columns) {
new_columns.emplace_back(
column.name().ToString(),
upper(column.value().ToString()));
}
}},
merge_in.existing_value);
for (const auto& operand : merge_in.operand_list) {
const std::string op = operand.ToString();
new_columns.emplace_back(op, upper(op));
}
return true;
}
const char* Name() const override {
return "WideColumnOutputMergeOperator";
}
};
Options options = GetDefaultOptions();
options.create_if_missing = true;
options.merge_operator = std::make_shared<WideColumnOutputMergeOperator>();
Reopen(options);
// Expected results
// Lexicographical order: [default] < hello < world
const WideColumns first_expected{{kDefaultWideColumnName, kNone},
{first_merge_op1, first_merge_op1_upper},
{first_merge_op2, first_merge_op2_upper}};
// Lexicographical order: [default] < bar < baz < foo
const WideColumns second_expected{
{kDefaultWideColumnName, kPlain},
{second_merge_op1, second_merge_op1_upper},
{second_merge_op2, second_merge_op2_upper},
{second_base_value, second_base_value_upper}};
// Lexicographical order: [default] < four < one < three < two
const WideColumns third_expected{
{kDefaultWideColumnName, kWide},
{third_merge_op2, third_merge_op2_upper},
{third_columns[0].name(), third_columns[0].value()},
{third_merge_op1, third_merge_op1_upper},
{third_columns[1].name(), third_columns[1].value()}};
RunTest(first_expected, second_expected, third_expected);
}
TEST_F(DBWideMergeV3Test, MergeV3PlainOutput) {
// A test merge operator that always returns a plain value as result, namely
// the total number of operands serialized as a string. Base values are also
// counted as operands; specifically, a plain base value is counted as one
// operand, while a wide-column base value is counted as as many operands as
// the number of columns.
class PlainOutputMergeOperator : public MergeOperator {
public:
bool FullMergeV3(const MergeOperationInputV3& merge_in,
MergeOperationOutputV3* merge_out) const override {
assert(merge_out);
size_t count = 0;
std::visit(
overload{[&](const std::monostate&) {},
[&](const Slice&) { count = 1; },
[&](const WideColumns& columns) { count = columns.size(); }},
merge_in.existing_value);
count += merge_in.operand_list.size();
merge_out->new_value = std::string();
std::get<std::string>(merge_out->new_value) = std::to_string(count);
return true;
}
const char* Name() const override { return "PlainOutputMergeOperator"; }
};
Options options = GetDefaultOptions();
options.create_if_missing = true;
options.merge_operator = std::make_shared<PlainOutputMergeOperator>();
Reopen(options);
const WideColumns first_expected{{kDefaultWideColumnName, "2"}};
const WideColumns second_expected{{kDefaultWideColumnName, "3"}};
const WideColumns third_expected{{kDefaultWideColumnName, "4"}};
RunTest(first_expected, second_expected, third_expected);
}
TEST_F(DBWideBasicTest, CompactionFilter) {
Options options = GetDefaultOptions();
options.create_if_missing = true;
// Wide-column entity with default column
constexpr char first_key[] = "first";
WideColumns first_columns{{kDefaultWideColumnName, "a"},
{"attr_name1", "foo"},
{"attr_name2", "bar"}};
WideColumns first_columns_uppercase{{kDefaultWideColumnName, "A"},
{"attr_name1", "FOO"},
{"attr_name2", "BAR"}};
// Wide-column entity without default column
constexpr char second_key[] = "second";
WideColumns second_columns{{"attr_one", "two"}, {"attr_three", "four"}};
WideColumns second_columns_uppercase{{"attr_one", "TWO"},
{"attr_three", "FOUR"}};
// Plain old key-value
constexpr char last_key[] = "last";
constexpr char last_value[] = "baz";
constexpr char last_value_uppercase[] = "BAZ";
auto write = [&] {
ASSERT_OK(db_->PutEntity(WriteOptions(), db_->DefaultColumnFamily(),
first_key, first_columns));
ASSERT_OK(db_->PutEntity(WriteOptions(), db_->DefaultColumnFamily(),
second_key, second_columns));
ASSERT_OK(Flush());
ASSERT_OK(db_->Put(WriteOptions(), db_->DefaultColumnFamily(), last_key,
last_value));
ASSERT_OK(Flush());
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), /* begin */ nullptr,
/* end */ nullptr));
};
// Test a compaction filter that keeps all entries
{
class KeepFilter : public CompactionFilter {
public:
Decision FilterV3(
int /* level */, const Slice& /* key */, ValueType /* value_type */,
const Slice* /* existing_value */,
const WideColumns* /* existing_columns */,
std::string* /* new_value */,
std::vector<std::pair<std::string, std::string>>* /* new_columns */,
std::string* /* skip_until */) const override {
return Decision::kKeep;
}
const char* Name() const override { return "KeepFilter"; }
};
KeepFilter filter;
options.compaction_filter = &filter;
DestroyAndReopen(options);
write();
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
first_key, &result));
ASSERT_EQ(result.columns(), first_columns);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
second_key, &result));
ASSERT_EQ(result.columns(), second_columns);
}
// Note: GetEntity should return an entity with a single default column,
// since last_key is a plain key-value
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
last_key, &result));
WideColumns expected_columns{{kDefaultWideColumnName, last_value}};
ASSERT_EQ(result.columns(), expected_columns);
}
}
// Test a compaction filter that removes all entries
{
class RemoveFilter : public CompactionFilter {
public:
Decision FilterV3(
int /* level */, const Slice& /* key */, ValueType /* value_type */,
const Slice* /* existing_value */,
const WideColumns* /* existing_columns */,
std::string* /* new_value */,
std::vector<std::pair<std::string, std::string>>* /* new_columns */,
std::string* /* skip_until */) const override {
return Decision::kRemove;
}
const char* Name() const override { return "RemoveFilter"; }
};
RemoveFilter filter;
options.compaction_filter = &filter;
DestroyAndReopen(options);
write();
{
PinnableWideColumns result;
ASSERT_TRUE(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
first_key, &result)
.IsNotFound());
}
{
PinnableWideColumns result;
ASSERT_TRUE(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
second_key, &result)
.IsNotFound());
}
{
PinnableWideColumns result;
ASSERT_TRUE(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
last_key, &result)
.IsNotFound());
}
}
// Test a compaction filter that changes the values of entries to uppercase.
// The new entry is always a plain key-value; if the existing entry is a
// wide-column entity, only the value of its first column is kept.
{
class ChangeValueFilter : public CompactionFilter {
public:
Decision FilterV3(
int /* level */, const Slice& /* key */, ValueType value_type,
const Slice* existing_value, const WideColumns* existing_columns,
std::string* new_value,
std::vector<std::pair<std::string, std::string>>* /* new_columns */,
std::string* /* skip_until */) const override {
assert(new_value);
auto upper = [](const std::string& str) {
std::string result(str);
for (char& c : result) {
c = static_cast<char>(std::toupper(static_cast<unsigned char>(c)));
}
return result;
};
if (value_type == ValueType::kWideColumnEntity) {
assert(existing_columns);
if (!existing_columns->empty()) {
*new_value = upper(existing_columns->front().value().ToString());
}
} else {
assert(existing_value);
*new_value = upper(existing_value->ToString());
}
return Decision::kChangeValue;
}
const char* Name() const override { return "ChangeValueFilter"; }
};
ChangeValueFilter filter;
options.compaction_filter = &filter;
DestroyAndReopen(options);
write();
// Note: GetEntity should return entities with a single default column,
// since all entries are now plain key-values
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
first_key, &result));
WideColumns expected_columns{
{kDefaultWideColumnName, first_columns_uppercase[0].value()}};
ASSERT_EQ(result.columns(), expected_columns);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
second_key, &result));
WideColumns expected_columns{
{kDefaultWideColumnName, second_columns_uppercase[0].value()}};
ASSERT_EQ(result.columns(), expected_columns);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
last_key, &result));
WideColumns expected_columns{
{kDefaultWideColumnName, last_value_uppercase}};
ASSERT_EQ(result.columns(), expected_columns);
}
}
// Test a compaction filter that changes the column values of entries to
// uppercase. The new entry is always a wide-column entity; if the existing
// entry is a plain key-value, it is converted to a wide-column entity with a
// single default column.
{
class ChangeEntityFilter : public CompactionFilter {
public:
Decision FilterV3(
int /* level */, const Slice& /* key */, ValueType value_type,
const Slice* existing_value, const WideColumns* existing_columns,
std::string* /* new_value */,
std::vector<std::pair<std::string, std::string>>* new_columns,
std::string* /* skip_until */) const override {
assert(new_columns);
auto upper = [](const std::string& str) {
std::string result(str);
for (char& c : result) {
c = static_cast<char>(std::toupper(static_cast<unsigned char>(c)));
}
return result;
};
if (value_type == ValueType::kWideColumnEntity) {
assert(existing_columns);
for (const auto& column : *existing_columns) {
new_columns->emplace_back(column.name().ToString(),
upper(column.value().ToString()));
}
} else {
assert(existing_value);
new_columns->emplace_back(kDefaultWideColumnName.ToString(),
upper(existing_value->ToString()));
}
return Decision::kChangeWideColumnEntity;
}
const char* Name() const override { return "ChangeEntityFilter"; }
};
ChangeEntityFilter filter;
options.compaction_filter = &filter;
DestroyAndReopen(options);
write();
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
first_key, &result));
ASSERT_EQ(result.columns(), first_columns_uppercase);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
second_key, &result));
ASSERT_EQ(result.columns(), second_columns_uppercase);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(ReadOptions(), db_->DefaultColumnFamily(),
last_key, &result));
WideColumns expected_columns{
{kDefaultWideColumnName, last_value_uppercase}};
ASSERT_EQ(result.columns(), expected_columns);
}
}
}
TEST_F(DBWideBasicTest, PutEntityTimestampError) {
// Note: timestamps are currently not supported
Options options = GetDefaultOptions();
options.comparator = test::BytewiseComparatorWithU64TsWrapper();
ColumnFamilyHandle* handle = nullptr;
ASSERT_OK(db_->CreateColumnFamily(options, "corinthian", &handle));
std::unique_ptr<ColumnFamilyHandle> handle_guard(handle);
// Use the DB::PutEntity API
constexpr char first_key[] = "first";
WideColumns first_columns{{"attr_name1", "foo"}, {"attr_name2", "bar"}};
ASSERT_TRUE(db_->PutEntity(WriteOptions(), handle, first_key, first_columns)
.IsInvalidArgument());
// Use WriteBatch
constexpr char second_key[] = "second";
WideColumns second_columns{{"doric", "column"}, {"ionic", "column"}};
WriteBatch batch;
ASSERT_TRUE(
batch.PutEntity(handle, second_key, second_columns).IsInvalidArgument());
ASSERT_OK(db_->Write(WriteOptions(), &batch));
}
TEST_F(DBWideBasicTest, PutEntitySerializationError) {
// Make sure duplicate columns are caught
Options options = GetDefaultOptions();
// Use the DB::PutEntity API
constexpr char first_key[] = "first";
WideColumns first_columns{{"foo", "bar"}, {"foo", "baz"}};
ASSERT_TRUE(db_->PutEntity(WriteOptions(), db_->DefaultColumnFamily(),
first_key, first_columns)
.IsCorruption());
// Use WriteBatch
constexpr char second_key[] = "second";
WideColumns second_columns{{"column", "doric"}, {"column", "ionic"}};
WriteBatch batch;
ASSERT_TRUE(
batch.PutEntity(db_->DefaultColumnFamily(), second_key, second_columns)
.IsCorruption());
ASSERT_OK(db_->Write(WriteOptions(), &batch));
}
TEST_F(DBWideBasicTest, PinnableWideColumnsMove) {
Options options = GetDefaultOptions();
constexpr char key1[] = "foo";
constexpr char value[] = "bar";
ASSERT_OK(db_->Put(WriteOptions(), db_->DefaultColumnFamily(), key1, value));
constexpr char key2[] = "baz";
const WideColumns columns{{"quux", "corge"}};
ASSERT_OK(db_->PutEntity(WriteOptions(), db_->DefaultColumnFamily(), key2,
columns));
ASSERT_OK(db_->Flush(FlushOptions()));
const auto test_move = [&](bool fill_cache) {
ReadOptions read_options;
read_options.fill_cache = fill_cache;
{
const WideColumns expected_columns{{kDefaultWideColumnName, value}};
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(read_options, db_->DefaultColumnFamily(), key1,
&result));
ASSERT_EQ(result.columns(), expected_columns);
PinnableWideColumns move_target(std::move(result));
ASSERT_EQ(move_target.columns(), expected_columns);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(read_options, db_->DefaultColumnFamily(), key1,
&result));
ASSERT_EQ(result.columns(), expected_columns);
PinnableWideColumns move_target;
move_target = std::move(result);
ASSERT_EQ(move_target.columns(), expected_columns);
}
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(read_options, db_->DefaultColumnFamily(), key2,
&result));
ASSERT_EQ(result.columns(), columns);
PinnableWideColumns move_target(std::move(result));
ASSERT_EQ(move_target.columns(), columns);
}
{
PinnableWideColumns result;
ASSERT_OK(db_->GetEntity(read_options, db_->DefaultColumnFamily(), key2,
&result));
ASSERT_EQ(result.columns(), columns);
PinnableWideColumns move_target;
move_target = std::move(result);
ASSERT_EQ(move_target.columns(), columns);
}
};
// Test with and without fill_cache to cover both the case when pointers are
// invalidated during PinnableSlice's move and when they are not.
test_move(/* fill_cache*/ false);
test_move(/* fill_cache*/ true);
}
} // 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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