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rocksdb/db/write_batch_test.cc

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// 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 "rocksdb/db.h"
#include <memory>
#include "db/memtable.h"
#include "db/write_batch_internal.h"
#include "rocksdb/env.h"
#include "rocksdb/memtablerep.h"
#include "util/logging.h"
#include "util/testharness.h"
namespace rocksdb {
static std::string PrintContents(WriteBatch* b) {
InternalKeyComparator cmp(BytewiseComparator());
auto factory = std::make_shared<SkipListFactory>();
MemTable* mem = new MemTable(cmp, factory);
mem->Ref();
std::string state;
Status s = WriteBatchInternal::InsertInto(b, mem);
int count = 0;
Iterator* iter = mem->NewIterator();
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
ParsedInternalKey ikey;
memset((void *)&ikey, 0, sizeof(ikey));
ASSERT_TRUE(ParseInternalKey(iter->key(), &ikey));
switch (ikey.type) {
case kTypeValue:
state.append("Put(");
state.append(ikey.user_key.ToString());
state.append(", ");
state.append(iter->value().ToString());
state.append(")");
count++;
break;
case kTypeMerge:
state.append("Merge(");
state.append(ikey.user_key.ToString());
state.append(", ");
state.append(iter->value().ToString());
state.append(")");
count++;
break;
case kTypeDeletion:
state.append("Delete(");
state.append(ikey.user_key.ToString());
state.append(")");
count++;
break;
case kTypeLogData:
assert(false);
break;
}
state.append("@");
state.append(NumberToString(ikey.sequence));
}
delete iter;
if (!s.ok()) {
state.append(s.ToString());
} else if (count != WriteBatchInternal::Count(b)) {
state.append("CountMismatch()");
}
mem->Unref();
return state;
}
class WriteBatchTest { };
TEST(WriteBatchTest, Empty) {
WriteBatch batch;
ASSERT_EQ("", PrintContents(&batch));
ASSERT_EQ(0, WriteBatchInternal::Count(&batch));
ASSERT_EQ(0, batch.Count());
}
TEST(WriteBatchTest, Multiple) {
WriteBatch batch;
batch.Put(Slice("foo"), Slice("bar"));
batch.Delete(Slice("box"));
batch.Put(Slice("baz"), Slice("boo"));
WriteBatchInternal::SetSequence(&batch, 100);
ASSERT_EQ(100U, WriteBatchInternal::Sequence(&batch));
ASSERT_EQ(3, WriteBatchInternal::Count(&batch));
ASSERT_EQ("Put(baz, boo)@102"
"Delete(box)@101"
"Put(foo, bar)@100",
PrintContents(&batch));
ASSERT_EQ(3, batch.Count());
}
TEST(WriteBatchTest, Corruption) {
WriteBatch batch;
batch.Put(Slice("foo"), Slice("bar"));
batch.Delete(Slice("box"));
WriteBatchInternal::SetSequence(&batch, 200);
Slice contents = WriteBatchInternal::Contents(&batch);
WriteBatchInternal::SetContents(&batch,
Slice(contents.data(),contents.size()-1));
ASSERT_EQ("Put(foo, bar)@200"
"Corruption: bad WriteBatch Delete",
PrintContents(&batch));
}
TEST(WriteBatchTest, Append) {
WriteBatch b1, b2;
WriteBatchInternal::SetSequence(&b1, 200);
WriteBatchInternal::SetSequence(&b2, 300);
WriteBatchInternal::Append(&b1, &b2);
ASSERT_EQ("",
PrintContents(&b1));
ASSERT_EQ(0, b1.Count());
b2.Put("a", "va");
WriteBatchInternal::Append(&b1, &b2);
ASSERT_EQ("Put(a, va)@200",
PrintContents(&b1));
ASSERT_EQ(1, b1.Count());
b2.Clear();
b2.Put("b", "vb");
WriteBatchInternal::Append(&b1, &b2);
ASSERT_EQ("Put(a, va)@200"
"Put(b, vb)@201",
PrintContents(&b1));
ASSERT_EQ(2, b1.Count());
b2.Delete("foo");
WriteBatchInternal::Append(&b1, &b2);
ASSERT_EQ("Put(a, va)@200"
"Put(b, vb)@202"
"Put(b, vb)@201"
"Delete(foo)@203",
PrintContents(&b1));
ASSERT_EQ(4, b1.Count());
}
namespace {
struct TestHandler : public WriteBatch::Handler {
std::string seen;
virtual void Put(const Slice& key, const Slice& value) {
seen += "Put(" + key.ToString() + ", " + value.ToString() + ")";
}
virtual void Merge(const Slice& key, const Slice& value) {
seen += "Merge(" + key.ToString() + ", " + value.ToString() + ")";
}
virtual void LogData(const Slice& blob) {
seen += "LogData(" + blob.ToString() + ")";
}
virtual void Delete(const Slice& key) {
seen += "Delete(" + key.ToString() + ")";
}
};
}
TEST(WriteBatchTest, Blob) {
WriteBatch batch;
batch.Put(Slice("k1"), Slice("v1"));
batch.Put(Slice("k2"), Slice("v2"));
batch.Put(Slice("k3"), Slice("v3"));
batch.PutLogData(Slice("blob1"));
batch.Delete(Slice("k2"));
batch.PutLogData(Slice("blob2"));
batch.Merge(Slice("foo"), Slice("bar"));
ASSERT_EQ(5, batch.Count());
ASSERT_EQ("Merge(foo, bar)@4"
"Put(k1, v1)@0"
"Delete(k2)@3"
"Put(k2, v2)@1"
"Put(k3, v3)@2",
PrintContents(&batch));
TestHandler handler;
batch.Iterate(&handler);
ASSERT_EQ(
"Put(k1, v1)"
"Put(k2, v2)"
"Put(k3, v3)"
"LogData(blob1)"
"Delete(k2)"
"LogData(blob2)"
"Merge(foo, bar)",
handler.seen);
}
TEST(WriteBatchTest, Continue) {
WriteBatch batch;
struct Handler : public TestHandler {
int num_seen = 0;
virtual void Put(const Slice& key, const Slice& value) {
++num_seen;
TestHandler::Put(key, value);
}
virtual void Merge(const Slice& key, const Slice& value) {
++num_seen;
TestHandler::Merge(key, value);
}
virtual void LogData(const Slice& blob) {
++num_seen;
TestHandler::LogData(blob);
}
virtual void Delete(const Slice& key) {
++num_seen;
TestHandler::Delete(key);
}
virtual bool Continue() override {
return num_seen < 3;
}
} handler;
batch.Put(Slice("k1"), Slice("v1"));
batch.PutLogData(Slice("blob1"));
batch.Delete(Slice("k1"));
batch.PutLogData(Slice("blob2"));
batch.Merge(Slice("foo"), Slice("bar"));
batch.Iterate(&handler);
ASSERT_EQ(
"Put(k1, v1)"
"LogData(blob1)"
"Delete(k1)",
handler.seen);
}
} // namespace rocksdb
int main(int argc, char** argv) {
return rocksdb::test::RunAllTests();
}