fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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312 lines
10 KiB
312 lines
10 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#ifndef ROCKSDB_LITE
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#ifndef __STDC_FORMAT_MACROS
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#define __STDC_FORMAT_MACROS
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#endif
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#include "utilities/transactions/transaction_test.h"
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#include "utilities/transactions/write_unprepared_txn.h"
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#include "utilities/transactions/write_unprepared_txn_db.h"
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namespace rocksdb {
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class WriteUnpreparedTransactionTestBase : public TransactionTestBase {
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public:
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WriteUnpreparedTransactionTestBase(bool use_stackable_db,
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bool two_write_queue,
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TxnDBWritePolicy write_policy)
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: TransactionTestBase(use_stackable_db, two_write_queue, write_policy){}
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};
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class WriteUnpreparedTransactionTest
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: public WriteUnpreparedTransactionTestBase,
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virtual public ::testing::WithParamInterface<
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std::tuple<bool, bool, TxnDBWritePolicy>> {
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public:
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WriteUnpreparedTransactionTest()
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: WriteUnpreparedTransactionTestBase(std::get<0>(GetParam()),
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std::get<1>(GetParam()),
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std::get<2>(GetParam())){}
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};
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INSTANTIATE_TEST_CASE_P(
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WriteUnpreparedTransactionTest, WriteUnpreparedTransactionTest,
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::testing::Values(std::make_tuple(false, false, WRITE_UNPREPARED),
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std::make_tuple(false, true, WRITE_UNPREPARED)));
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TEST_P(WriteUnpreparedTransactionTest, ReadYourOwnWrite) {
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auto verify_state = [](Iterator* iter, const std::string& key,
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const std::string& value) {
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ASSERT_TRUE(iter->Valid());
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ASSERT_OK(iter->status());
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ASSERT_EQ(key, iter->key().ToString());
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ASSERT_EQ(value, iter->value().ToString());
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};
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options.disable_auto_compactions = true;
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ReOpen();
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// The following tests checks whether reading your own write for
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// a transaction works for write unprepared, when there are uncommitted
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// values written into DB.
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//
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// Although the values written by DB::Put are technically committed, we add
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// their seq num to unprep_seqs_ to pretend that they were written into DB
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// as part of an unprepared batch, and then check if they are visible to the
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// transaction.
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auto snapshot0 = db->GetSnapshot();
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ASSERT_OK(db->Put(WriteOptions(), "a", "v1"));
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ASSERT_OK(db->Put(WriteOptions(), "b", "v2"));
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auto snapshot2 = db->GetSnapshot();
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ASSERT_OK(db->Put(WriteOptions(), "a", "v3"));
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ASSERT_OK(db->Put(WriteOptions(), "b", "v4"));
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auto snapshot4 = db->GetSnapshot();
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ASSERT_OK(db->Put(WriteOptions(), "a", "v5"));
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ASSERT_OK(db->Put(WriteOptions(), "b", "v6"));
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auto snapshot6 = db->GetSnapshot();
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ASSERT_OK(db->Put(WriteOptions(), "a", "v7"));
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ASSERT_OK(db->Put(WriteOptions(), "b", "v8"));
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auto snapshot8 = db->GetSnapshot();
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TransactionOptions txn_options;
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WriteOptions write_options;
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Transaction* txn = db->BeginTransaction(write_options, txn_options);
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WriteUnpreparedTxn* wup_txn = dynamic_cast<WriteUnpreparedTxn*>(txn);
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ReadOptions roptions;
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roptions.snapshot = snapshot0;
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auto iter = txn->GetIterator(roptions);
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// Test Get().
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std::string value;
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wup_txn->unprep_seqs_[snapshot2->GetSequenceNumber() + 1] =
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snapshot4->GetSequenceNumber() - snapshot2->GetSequenceNumber();
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ASSERT_OK(txn->Get(roptions, Slice("a"), &value));
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ASSERT_EQ(value, "v3");
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ASSERT_OK(txn->Get(roptions, Slice("b"), &value));
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ASSERT_EQ(value, "v4");
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wup_txn->unprep_seqs_[snapshot6->GetSequenceNumber() + 1] =
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snapshot8->GetSequenceNumber() - snapshot6->GetSequenceNumber();
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ASSERT_OK(txn->Get(roptions, Slice("a"), &value));
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ASSERT_EQ(value, "v7");
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ASSERT_OK(txn->Get(roptions, Slice("b"), &value));
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ASSERT_EQ(value, "v8");
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wup_txn->unprep_seqs_.clear();
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// Test Next().
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wup_txn->unprep_seqs_[snapshot2->GetSequenceNumber() + 1] =
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snapshot4->GetSequenceNumber() - snapshot2->GetSequenceNumber();
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iter->Seek("a");
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verify_state(iter, "a", "v3");
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iter->Next();
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verify_state(iter, "b", "v4");
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iter->SeekToFirst();
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verify_state(iter, "a", "v3");
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iter->Next();
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verify_state(iter, "b", "v4");
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wup_txn->unprep_seqs_[snapshot6->GetSequenceNumber() + 1] =
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snapshot8->GetSequenceNumber() - snapshot6->GetSequenceNumber();
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iter->Seek("a");
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verify_state(iter, "a", "v7");
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iter->Next();
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verify_state(iter, "b", "v8");
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iter->SeekToFirst();
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verify_state(iter, "a", "v7");
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iter->Next();
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verify_state(iter, "b", "v8");
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wup_txn->unprep_seqs_.clear();
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// Test Prev(). For Prev(), we need to adjust the snapshot to match what is
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// possible in WriteUnpreparedTxn.
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//
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// Because of row locks and ValidateSnapshot, there cannot be any committed
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// entries after snapshot, but before the first prepared key.
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delete iter;
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roptions.snapshot = snapshot2;
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iter = txn->GetIterator(roptions);
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wup_txn->unprep_seqs_[snapshot2->GetSequenceNumber() + 1] =
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snapshot4->GetSequenceNumber() - snapshot2->GetSequenceNumber();
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iter->SeekForPrev("b");
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verify_state(iter, "b", "v4");
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iter->Prev();
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verify_state(iter, "a", "v3");
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iter->SeekToLast();
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verify_state(iter, "b", "v4");
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iter->Prev();
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verify_state(iter, "a", "v3");
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delete iter;
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roptions.snapshot = snapshot6;
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iter = txn->GetIterator(roptions);
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wup_txn->unprep_seqs_[snapshot6->GetSequenceNumber() + 1] =
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snapshot8->GetSequenceNumber() - snapshot6->GetSequenceNumber();
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iter->SeekForPrev("b");
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verify_state(iter, "b", "v8");
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iter->Prev();
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verify_state(iter, "a", "v7");
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iter->SeekToLast();
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verify_state(iter, "b", "v8");
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iter->Prev();
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verify_state(iter, "a", "v7");
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db->ReleaseSnapshot(snapshot0);
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db->ReleaseSnapshot(snapshot2);
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db->ReleaseSnapshot(snapshot4);
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db->ReleaseSnapshot(snapshot6);
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db->ReleaseSnapshot(snapshot8);
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delete iter;
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delete txn;
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}
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TEST_P(WriteUnpreparedTransactionTest, RecoveryRollbackUnprepared) {
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WriteOptions write_options;
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write_options.disableWAL = false;
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uint64_t seq_used = kMaxSequenceNumber;
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uint64_t log_number;
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WriteBatch batch;
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std::vector<Transaction*> prepared_trans;
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WriteUnpreparedTxnDB* wup_db;
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options.disable_auto_compactions = true;
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// Try unprepared batches with empty database.
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for (int num_batches = 0; num_batches < 10; num_batches++) {
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// Reset database.
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prepared_trans.clear();
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ReOpen();
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wup_db = dynamic_cast<WriteUnpreparedTxnDB*>(db);
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// Write num_batches unprepared batches into the WAL.
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for (int i = 0; i < num_batches; i++) {
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batch.Clear();
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// TODO(lth): Instead of manually calling WriteImpl with a write batch,
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// use methods on Transaction instead once it is implemented.
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ASSERT_OK(WriteBatchInternal::InsertNoop(&batch));
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ASSERT_OK(WriteBatchInternal::Put(&batch,
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db->DefaultColumnFamily()->GetID(),
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"k" + ToString(i), "value"));
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// MarkEndPrepare will change the Noop marker into an unprepared marker.
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ASSERT_OK(WriteBatchInternal::MarkEndPrepare(
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&batch, Slice("xid1"), /* write after commit */ false,
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/* unprepared batch */ true));
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ASSERT_OK(wup_db->db_impl_->WriteImpl(
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write_options, &batch, /*callback*/ nullptr, &log_number,
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/*log ref*/ 0, /* disable memtable */ true, &seq_used,
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/* prepare_batch_cnt_ */ 1));
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}
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// Crash and run recovery code paths.
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wup_db->db_impl_->FlushWAL(true);
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wup_db->TEST_Crash();
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ReOpenNoDelete();
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wup_db = dynamic_cast<WriteUnpreparedTxnDB*>(db);
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db->GetAllPreparedTransactions(&prepared_trans);
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ASSERT_EQ(prepared_trans.size(), 0);
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// Check that DB is empty.
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Iterator* iter = db->NewIterator(ReadOptions());
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iter->SeekToFirst();
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ASSERT_FALSE(iter->Valid());
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delete iter;
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}
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// Try unprepared batches with non-empty database.
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for (int num_batches = 1; num_batches < 10; num_batches++) {
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// Reset database.
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prepared_trans.clear();
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ReOpen();
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wup_db = dynamic_cast<WriteUnpreparedTxnDB*>(db);
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for (int i = 0; i < num_batches; i++) {
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ASSERT_OK(db->Put(WriteOptions(), "k" + ToString(i),
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"before value " + ToString(i)));
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}
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// Write num_batches unprepared batches into the WAL.
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for (int i = 0; i < num_batches; i++) {
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batch.Clear();
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// TODO(lth): Instead of manually calling WriteImpl with a write batch,
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// use methods on Transaction instead once it is implemented.
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ASSERT_OK(WriteBatchInternal::InsertNoop(&batch));
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ASSERT_OK(WriteBatchInternal::Put(&batch,
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db->DefaultColumnFamily()->GetID(),
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"k" + ToString(i), "value"));
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// MarkEndPrepare will change the Noop marker into an unprepared marker.
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ASSERT_OK(WriteBatchInternal::MarkEndPrepare(
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&batch, Slice("xid1"), /* write after commit */ false,
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/* unprepared batch */ true));
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ASSERT_OK(wup_db->db_impl_->WriteImpl(
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write_options, &batch, /*callback*/ nullptr, &log_number,
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/*log ref*/ 0, /* disable memtable */ true, &seq_used,
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/* prepare_batch_cnt_ */ 1));
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}
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// Crash and run recovery code paths.
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wup_db->db_impl_->FlushWAL(true);
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wup_db->TEST_Crash();
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ReOpenNoDelete();
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wup_db = dynamic_cast<WriteUnpreparedTxnDB*>(db);
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db->GetAllPreparedTransactions(&prepared_trans);
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ASSERT_EQ(prepared_trans.size(), 0);
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// Check that DB has before values.
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Iterator* iter = db->NewIterator(ReadOptions());
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iter->SeekToFirst();
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for (int i = 0; i < num_batches; i++) {
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ASSERT_TRUE(iter->Valid());
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ASSERT_EQ(iter->key().ToString(), "k" + ToString(i));
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ASSERT_EQ(iter->value().ToString(), "before value " + ToString(i));
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iter->Next();
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}
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ASSERT_FALSE(iter->Valid());
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delete iter;
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}
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}
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} // namespace rocksdb
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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#else
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#include <stdio.h>
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int main(int /*argc*/, char** /*argv*/) {
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fprintf(stderr,
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"SKIPPED as Transactions are not supported in ROCKSDB_LITE\n");
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return 0;
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}
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#endif // ROCKSDB_LITE
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