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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/searchlib/memoryindex/feature_store.h>
#include <vespa/searchcommon/common/schema.h>
#include <vespa/vespalib/gtest/gtest.h>
#include <cinttypes>
#include <vespa/log/log.h>
LOG_SETUP("feature_store_test");
using namespace vespalib::datastore;
using namespace search::index;
using search::index::schema::CollectionType;
using search::index::schema::DataType;
namespace search::memoryindex {
class FeatureStoreTest : public ::testing::Test {
public:
Schema schema;
FeatureStore fs;
Schema make_schema() const;
FeatureStoreTest();
};
Schema
FeatureStoreTest::make_schema() const
{
Schema result;
result.addIndexField(Schema::IndexField("f0", DataType::STRING));
result.addIndexField(Schema::IndexField("f1", DataType::STRING, CollectionType::WEIGHTEDSET));
return result;
}
FeatureStoreTest::FeatureStoreTest()
: schema(make_schema()),
fs(schema)
{
}
void
assertFeatures(const DocIdAndFeatures& exp,
const DocIdAndFeatures& act)
{
// docid is not encoded as part of features
ASSERT_EQ(exp.elements().size(),
act.elements().size());
for (size_t i = 0; i < exp.elements().size(); ++i) {
EXPECT_EQ(exp.elements()[i].getElementId(),
act.elements()[i].getElementId());
EXPECT_EQ(exp.elements()[i].getNumOccs(),
act.elements()[i].getNumOccs());
EXPECT_EQ(exp.elements()[i].getWeight(), act.elements()[i].getWeight());
EXPECT_EQ(exp.elements()[i].getElementLen(),
act.elements()[i].getElementLen());
}
ASSERT_EQ(exp.word_positions().size(), act.word_positions().size());
for (size_t i = 0; i < exp.word_positions().size(); ++i) {
EXPECT_EQ(exp.word_positions()[i].getWordPos(),
act.word_positions()[i].getWordPos());
}
}
DocIdAndFeatures
getFeatures(uint32_t numOccs,
int32_t weight,
uint32_t elemLen)
{
DocIdAndFeatures f;
f.set_doc_id(0);
f.elements().push_back(WordDocElementFeatures(0));
f.elements().back().setNumOccs(numOccs);
f.elements().back().setWeight(weight);
f.elements().back().setElementLen(elemLen);
for (uint32_t i = 0; i < numOccs; ++i) {
f.word_positions().push_back(WordDocElementWordPosFeatures(i));
}
return f;
}
TEST_F(FeatureStoreTest, features_can_be_added_and_retrieved)
{
DocIdAndFeatures act;
EntryRef r1;
EntryRef r2;
std::pair<EntryRef, uint64_t> r;
{
DocIdAndFeatures f = getFeatures(2, 4, 8);
r = fs.addFeatures(0, f);
r1 = r.first;
EXPECT_TRUE(r.second > 0);
EXPECT_EQ(1u, FeatureStore::RefType(r1).offset());
EXPECT_EQ(0u, FeatureStore::RefType(r1).bufferId());
LOG(info,
"bits(%" PRIu64 "), ref.offset(%zu), ref.bufferId(%u)",
r.second,
FeatureStore::RefType(r1).offset(),
FeatureStore::RefType(r1).bufferId());
fs.getFeatures(0, r1, act);
// weight not encoded for single value
ASSERT_NO_FATAL_FAILURE(assertFeatures(getFeatures(2, 1, 8), act));
}
{
DocIdAndFeatures f = getFeatures(4, 8, 16);
r = fs.addFeatures(1, f);
r2 = r.first;
EXPECT_TRUE(r.second > 0);
EXPECT_TRUE(FeatureStore::RefType(r2).offset() >
FeatureStore::RefType(r1).offset());
EXPECT_EQ(0u, FeatureStore::RefType(r1).bufferId());
LOG(info,
"bits(%" PRIu64 "), ref.offset(%zu), ref.bufferId(%u)",
r.second,
FeatureStore::RefType(r2).offset(),
FeatureStore::RefType(r2).bufferId());
fs.getFeatures(1, r2, act);
ASSERT_NO_FATAL_FAILURE(assertFeatures(f, act));
}
}
TEST_F(FeatureStoreTest, next_words_are_working)
{
DocIdAndFeatures act;
EntryRef r1;
EntryRef r2;
std::pair<EntryRef, uint64_t> r;
{
DocIdAndFeatures f = getFeatures(2, 4, 8);
r = fs.addFeatures(0, f);
r1 = r.first;
EXPECT_TRUE(r.second > 0);
EXPECT_EQ(1u, FeatureStore::RefType(r1).offset());
EXPECT_EQ(0u, FeatureStore::RefType(r1).bufferId());
LOG(info,
"bits(%" PRIu64 "), ref.offset(%zu), ref.bufferId(%u)",
r.second,
FeatureStore::RefType(r1).offset(),
FeatureStore::RefType(r1).bufferId());
fs.getFeatures(0, r1, act);
// weight not encoded for single value
ASSERT_NO_FATAL_FAILURE(assertFeatures(getFeatures(2, 1, 8), act));
}
{
DocIdAndFeatures f = getFeatures(4, 8, 16);
r = fs.addFeatures(1, f);
r2 = r.first;
EXPECT_TRUE(r.second > 0);
EXPECT_TRUE(FeatureStore::RefType(r2).offset() >
FeatureStore::RefType(r1).offset());
EXPECT_EQ(0u, FeatureStore::RefType(r1).bufferId());
LOG(info,
"bits(%" PRIu64 "), ref.offset(%zu), ref.bufferId(%u)",
r.second,
FeatureStore::RefType(r2).offset(),
FeatureStore::RefType(r2).bufferId());
fs.getFeatures(1, r2, act);
ASSERT_NO_FATAL_FAILURE(assertFeatures(f, act));
}
}
TEST_F(FeatureStoreTest, add_features_triggers_change_of_buffer)
{
size_t cnt = 1;
DocIdAndFeatures act;
uint32_t lastId = 0;
for (;;++cnt) {
uint32_t numOccs = (cnt % 100) + 1;
DocIdAndFeatures f = getFeatures(numOccs, 1, numOccs + 1);
std::pair<EntryRef, uint64_t> r = fs.addFeatures(0, f);
fs.getFeatures(0, r.first, act);
ASSERT_NO_FATAL_FAILURE(assertFeatures(f, act));
uint32_t bufferId = FeatureStore::RefType(r.first).bufferId();
if (bufferId > lastId) {
LOG(info,
"Changed to bufferId %u after %zu feature sets",
bufferId, cnt);
lastId = bufferId;
}
if (bufferId == 1) {
break;
}
}
EXPECT_EQ(1u, lastId);
LOG(info, "Added %zu feature sets in 1 buffer", cnt);
}
}
GTEST_MAIN_RUN_ALL_TESTS()
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