fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
299 lines
11 KiB
299 lines
11 KiB
// 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).
|
|
|
|
#pragma once
|
|
#ifndef ROCKSDB_LITE
|
|
|
|
#include <mutex>
|
|
#include <queue>
|
|
#include <set>
|
|
#include <string>
|
|
#include <unordered_map>
|
|
#include <vector>
|
|
|
|
#include "db/db_iter.h"
|
|
#include "db/read_callback.h"
|
|
#include "db/snapshot_checker.h"
|
|
#include "rocksdb/db.h"
|
|
#include "rocksdb/options.h"
|
|
#include "rocksdb/utilities/transaction_db.h"
|
|
#include "util/cast_util.h"
|
|
#include "utilities/transactions/lock/lock_manager.h"
|
|
#include "utilities/transactions/lock/range/range_lock_manager.h"
|
|
#include "utilities/transactions/pessimistic_transaction.h"
|
|
#include "utilities/transactions/write_prepared_txn.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
class PessimisticTransactionDB : public TransactionDB {
|
|
public:
|
|
explicit PessimisticTransactionDB(DB* db,
|
|
const TransactionDBOptions& txn_db_options);
|
|
|
|
explicit PessimisticTransactionDB(StackableDB* db,
|
|
const TransactionDBOptions& txn_db_options);
|
|
|
|
virtual ~PessimisticTransactionDB();
|
|
|
|
virtual const Snapshot* GetSnapshot() override { return db_->GetSnapshot(); }
|
|
|
|
virtual Status Initialize(
|
|
const std::vector<size_t>& compaction_enabled_cf_indices,
|
|
const std::vector<ColumnFamilyHandle*>& handles);
|
|
|
|
Transaction* BeginTransaction(const WriteOptions& write_options,
|
|
const TransactionOptions& txn_options,
|
|
Transaction* old_txn) override = 0;
|
|
|
|
using StackableDB::Put;
|
|
virtual Status Put(const WriteOptions& options,
|
|
ColumnFamilyHandle* column_family, const Slice& key,
|
|
const Slice& val) override;
|
|
|
|
using StackableDB::Delete;
|
|
virtual Status Delete(const WriteOptions& wopts,
|
|
ColumnFamilyHandle* column_family,
|
|
const Slice& key) override;
|
|
|
|
using StackableDB::SingleDelete;
|
|
virtual Status SingleDelete(const WriteOptions& wopts,
|
|
ColumnFamilyHandle* column_family,
|
|
const Slice& key) override;
|
|
|
|
using StackableDB::Merge;
|
|
virtual Status Merge(const WriteOptions& options,
|
|
ColumnFamilyHandle* column_family, const Slice& key,
|
|
const Slice& value) override;
|
|
|
|
using TransactionDB::Write;
|
|
virtual Status Write(const WriteOptions& opts, WriteBatch* updates) override;
|
|
inline Status WriteWithConcurrencyControl(const WriteOptions& opts,
|
|
WriteBatch* updates) {
|
|
// Need to lock all keys in this batch to prevent write conflicts with
|
|
// concurrent transactions.
|
|
Transaction* txn = BeginInternalTransaction(opts);
|
|
txn->DisableIndexing();
|
|
|
|
auto txn_impl = static_cast_with_check<PessimisticTransaction>(txn);
|
|
|
|
// Since commitBatch sorts the keys before locking, concurrent Write()
|
|
// operations will not cause a deadlock.
|
|
// In order to avoid a deadlock with a concurrent Transaction, Transactions
|
|
// should use a lock timeout.
|
|
Status s = txn_impl->CommitBatch(updates);
|
|
|
|
delete txn;
|
|
|
|
return s;
|
|
}
|
|
|
|
using StackableDB::CreateColumnFamily;
|
|
virtual Status CreateColumnFamily(const ColumnFamilyOptions& options,
|
|
const std::string& column_family_name,
|
|
ColumnFamilyHandle** handle) override;
|
|
|
|
using StackableDB::DropColumnFamily;
|
|
virtual Status DropColumnFamily(ColumnFamilyHandle* column_family) override;
|
|
|
|
Status TryLock(PessimisticTransaction* txn, uint32_t cfh_id,
|
|
const std::string& key, bool exclusive);
|
|
Status TryRangeLock(PessimisticTransaction* txn, uint32_t cfh_id,
|
|
const Endpoint& start_endp, const Endpoint& end_endp);
|
|
|
|
void UnLock(PessimisticTransaction* txn, const LockTracker& keys);
|
|
void UnLock(PessimisticTransaction* txn, uint32_t cfh_id,
|
|
const std::string& key);
|
|
|
|
void AddColumnFamily(const ColumnFamilyHandle* handle);
|
|
|
|
static TransactionDBOptions ValidateTxnDBOptions(
|
|
const TransactionDBOptions& txn_db_options);
|
|
|
|
const TransactionDBOptions& GetTxnDBOptions() const {
|
|
return txn_db_options_;
|
|
}
|
|
|
|
void InsertExpirableTransaction(TransactionID tx_id,
|
|
PessimisticTransaction* tx);
|
|
void RemoveExpirableTransaction(TransactionID tx_id);
|
|
|
|
// If transaction is no longer available, locks can be stolen
|
|
// If transaction is available, try stealing locks directly from transaction
|
|
// It is the caller's responsibility to ensure that the referred transaction
|
|
// is expirable (GetExpirationTime() > 0) and that it is expired.
|
|
bool TryStealingExpiredTransactionLocks(TransactionID tx_id);
|
|
|
|
Transaction* GetTransactionByName(const TransactionName& name) override;
|
|
|
|
void RegisterTransaction(Transaction* txn);
|
|
void UnregisterTransaction(Transaction* txn);
|
|
|
|
// not thread safe. current use case is during recovery (single thread)
|
|
void GetAllPreparedTransactions(std::vector<Transaction*>* trans) override;
|
|
|
|
LockManager::PointLockStatus GetLockStatusData() override;
|
|
|
|
std::vector<DeadlockPath> GetDeadlockInfoBuffer() override;
|
|
void SetDeadlockInfoBufferSize(uint32_t target_size) override;
|
|
|
|
// The default implementation does nothing. The actual implementation is moved
|
|
// to the child classes that actually need this information. This was due to
|
|
// an odd performance drop we observed when the added std::atomic member to
|
|
// the base class even when the subclass do not read it in the fast path.
|
|
virtual void UpdateCFComparatorMap(const std::vector<ColumnFamilyHandle*>&) {}
|
|
virtual void UpdateCFComparatorMap(ColumnFamilyHandle*) {}
|
|
|
|
// Use the returned factory to create LockTrackers in transactions.
|
|
const LockTrackerFactory& GetLockTrackerFactory() const {
|
|
return lock_manager_->GetLockTrackerFactory();
|
|
}
|
|
|
|
std::pair<Status, std::shared_ptr<const Snapshot>> CreateTimestampedSnapshot(
|
|
TxnTimestamp ts) override;
|
|
|
|
std::shared_ptr<const Snapshot> GetTimestampedSnapshot(
|
|
TxnTimestamp ts) const override;
|
|
|
|
void ReleaseTimestampedSnapshotsOlderThan(TxnTimestamp ts) override;
|
|
|
|
Status GetTimestampedSnapshots(TxnTimestamp ts_lb, TxnTimestamp ts_ub,
|
|
std::vector<std::shared_ptr<const Snapshot>>&
|
|
timestamped_snapshots) const override;
|
|
|
|
protected:
|
|
DBImpl* db_impl_;
|
|
std::shared_ptr<Logger> info_log_;
|
|
const TransactionDBOptions txn_db_options_;
|
|
|
|
static Status FailIfBatchHasTs(const WriteBatch* wb);
|
|
|
|
static Status FailIfCfEnablesTs(const DB* db,
|
|
const ColumnFamilyHandle* column_family);
|
|
|
|
void ReinitializeTransaction(
|
|
Transaction* txn, const WriteOptions& write_options,
|
|
const TransactionOptions& txn_options = TransactionOptions());
|
|
|
|
virtual Status VerifyCFOptions(const ColumnFamilyOptions& cf_options);
|
|
|
|
private:
|
|
friend class WritePreparedTxnDB;
|
|
friend class WritePreparedTxnDBMock;
|
|
friend class WriteUnpreparedTxn;
|
|
friend class TransactionTest_DoubleCrashInRecovery_Test;
|
|
friend class TransactionTest_DoubleEmptyWrite_Test;
|
|
friend class TransactionTest_DuplicateKeys_Test;
|
|
friend class TransactionTest_PersistentTwoPhaseTransactionTest_Test;
|
|
friend class TransactionTest_TwoPhaseDoubleRecoveryTest_Test;
|
|
friend class TransactionTest_TwoPhaseOutOfOrderDelete_Test;
|
|
friend class TransactionStressTest_TwoPhaseLongPrepareTest_Test;
|
|
friend class WriteUnpreparedTransactionTest_RecoveryTest_Test;
|
|
friend class WriteUnpreparedTransactionTest_MarkLogWithPrepSection_Test;
|
|
|
|
Transaction* BeginInternalTransaction(const WriteOptions& options);
|
|
|
|
std::shared_ptr<LockManager> lock_manager_;
|
|
|
|
// Must be held when adding/dropping column families.
|
|
InstrumentedMutex column_family_mutex_;
|
|
|
|
// Used to ensure that no locks are stolen from an expirable transaction
|
|
// that has started a commit. Only transactions with an expiration time
|
|
// should be in this map.
|
|
std::mutex map_mutex_;
|
|
std::unordered_map<TransactionID, PessimisticTransaction*>
|
|
expirable_transactions_map_;
|
|
|
|
// map from name to two phase transaction instance
|
|
std::mutex name_map_mutex_;
|
|
std::unordered_map<TransactionName, Transaction*> transactions_;
|
|
|
|
// Signal that we are testing a crash scenario. Some asserts could be relaxed
|
|
// in such cases.
|
|
virtual void TEST_Crash() {}
|
|
};
|
|
|
|
// A PessimisticTransactionDB that writes the data to the DB after the commit.
|
|
// In this way the DB only contains the committed data.
|
|
class WriteCommittedTxnDB : public PessimisticTransactionDB {
|
|
public:
|
|
explicit WriteCommittedTxnDB(DB* db,
|
|
const TransactionDBOptions& txn_db_options)
|
|
: PessimisticTransactionDB(db, txn_db_options) {}
|
|
|
|
explicit WriteCommittedTxnDB(StackableDB* db,
|
|
const TransactionDBOptions& txn_db_options)
|
|
: PessimisticTransactionDB(db, txn_db_options) {}
|
|
|
|
virtual ~WriteCommittedTxnDB() {}
|
|
|
|
Transaction* BeginTransaction(const WriteOptions& write_options,
|
|
const TransactionOptions& txn_options,
|
|
Transaction* old_txn) override;
|
|
|
|
// Optimized version of ::Write that makes use of skip_concurrency_control
|
|
// hint
|
|
using TransactionDB::Write;
|
|
virtual Status Write(const WriteOptions& opts,
|
|
const TransactionDBWriteOptimizations& optimizations,
|
|
WriteBatch* updates) override;
|
|
virtual Status Write(const WriteOptions& opts, WriteBatch* updates) override;
|
|
};
|
|
|
|
inline Status PessimisticTransactionDB::FailIfBatchHasTs(
|
|
const WriteBatch* batch) {
|
|
if (batch != nullptr && WriteBatchInternal::HasKeyWithTimestamp(*batch)) {
|
|
return Status::NotSupported(
|
|
"Writes with timestamp must go through transaction API instead of "
|
|
"TransactionDB.");
|
|
}
|
|
return Status::OK();
|
|
}
|
|
|
|
inline Status PessimisticTransactionDB::FailIfCfEnablesTs(
|
|
const DB* db, const ColumnFamilyHandle* column_family) {
|
|
assert(db);
|
|
column_family = column_family ? column_family : db->DefaultColumnFamily();
|
|
assert(column_family);
|
|
const Comparator* const ucmp = column_family->GetComparator();
|
|
assert(ucmp);
|
|
if (ucmp->timestamp_size() > 0) {
|
|
return Status::NotSupported(
|
|
"Write operation with user timestamp must go through the transaction "
|
|
"API instead of TransactionDB.");
|
|
}
|
|
return Status::OK();
|
|
}
|
|
|
|
class SnapshotCreationCallback : public PostMemTableCallback {
|
|
public:
|
|
explicit SnapshotCreationCallback(
|
|
DBImpl* dbi, TxnTimestamp commit_ts,
|
|
const std::shared_ptr<TransactionNotifier>& notifier,
|
|
std::shared_ptr<const Snapshot>& snapshot)
|
|
: db_impl_(dbi),
|
|
commit_ts_(commit_ts),
|
|
snapshot_notifier_(notifier),
|
|
snapshot_(snapshot) {
|
|
assert(db_impl_);
|
|
}
|
|
|
|
~SnapshotCreationCallback() override {
|
|
snapshot_creation_status_.PermitUncheckedError();
|
|
}
|
|
|
|
Status operator()(SequenceNumber seq, bool disable_memtable) override;
|
|
|
|
private:
|
|
DBImpl* const db_impl_;
|
|
const TxnTimestamp commit_ts_;
|
|
std::shared_ptr<TransactionNotifier> snapshot_notifier_;
|
|
std::shared_ptr<const Snapshot>& snapshot_;
|
|
|
|
Status snapshot_creation_status_;
|
|
};
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
#endif // ROCKSDB_LITE
|
|
|