mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-29 18:33:58 +00:00
bd513fd075
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/9266 This diff adds a new tag `CommitWithTimestamp`. Currently, there is no API to trigger writing this tag to WAL, thus it is unavailable to users. This is an ongoing effort to add user-defined timestamp support to write-committed transactions. This diff also indicates all column families that may potentially participate in the same transaction must either disable timestamp or have the same timestamp format, since `CommitWithTimestamp` tag is followed by a single byte-array denoting the commit timestamp of the transaction. We will enforce this checking in a future diff. We keep this diff small. Reviewed By: ltamasi Differential Revision: D31721350 fbshipit-source-id: e1450811443647feb6ca01adec4c8aaae270ffc6
685 lines
22 KiB
C++
685 lines
22 KiB
C++
// 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).
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
|
|
#include "utilities/transactions/transaction_base.h"
|
|
|
|
#include <cinttypes>
|
|
|
|
#include "db/column_family.h"
|
|
#include "db/db_impl/db_impl.h"
|
|
#include "logging/logging.h"
|
|
#include "rocksdb/comparator.h"
|
|
#include "rocksdb/db.h"
|
|
#include "rocksdb/status.h"
|
|
#include "util/cast_util.h"
|
|
#include "util/string_util.h"
|
|
#include "utilities/transactions/lock/lock_tracker.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
TransactionBaseImpl::TransactionBaseImpl(
|
|
DB* db, const WriteOptions& write_options,
|
|
const LockTrackerFactory& lock_tracker_factory)
|
|
: db_(db),
|
|
dbimpl_(static_cast_with_check<DBImpl>(db)),
|
|
write_options_(write_options),
|
|
cmp_(GetColumnFamilyUserComparator(db->DefaultColumnFamily())),
|
|
lock_tracker_factory_(lock_tracker_factory),
|
|
start_time_(dbimpl_->GetSystemClock()->NowMicros()),
|
|
write_batch_(cmp_, 0, true, 0),
|
|
tracked_locks_(lock_tracker_factory_.Create()),
|
|
indexing_enabled_(true) {
|
|
assert(dynamic_cast<DBImpl*>(db_) != nullptr);
|
|
log_number_ = 0;
|
|
if (dbimpl_->allow_2pc()) {
|
|
InitWriteBatch();
|
|
}
|
|
}
|
|
|
|
TransactionBaseImpl::~TransactionBaseImpl() {
|
|
// Release snapshot if snapshot is set
|
|
SetSnapshotInternal(nullptr);
|
|
}
|
|
|
|
void TransactionBaseImpl::Clear() {
|
|
save_points_.reset(nullptr);
|
|
write_batch_.Clear();
|
|
commit_time_batch_.Clear();
|
|
tracked_locks_->Clear();
|
|
num_puts_ = 0;
|
|
num_deletes_ = 0;
|
|
num_merges_ = 0;
|
|
|
|
if (dbimpl_->allow_2pc()) {
|
|
InitWriteBatch();
|
|
}
|
|
}
|
|
|
|
void TransactionBaseImpl::Reinitialize(DB* db,
|
|
const WriteOptions& write_options) {
|
|
Clear();
|
|
ClearSnapshot();
|
|
id_ = 0;
|
|
db_ = db;
|
|
name_.clear();
|
|
log_number_ = 0;
|
|
write_options_ = write_options;
|
|
start_time_ = dbimpl_->GetSystemClock()->NowMicros();
|
|
indexing_enabled_ = true;
|
|
cmp_ = GetColumnFamilyUserComparator(db_->DefaultColumnFamily());
|
|
}
|
|
|
|
void TransactionBaseImpl::SetSnapshot() {
|
|
const Snapshot* snapshot = dbimpl_->GetSnapshotForWriteConflictBoundary();
|
|
SetSnapshotInternal(snapshot);
|
|
}
|
|
|
|
void TransactionBaseImpl::SetSnapshotInternal(const Snapshot* snapshot) {
|
|
// Set a custom deleter for the snapshot_ SharedPtr as the snapshot needs to
|
|
// be released, not deleted when it is no longer referenced.
|
|
snapshot_.reset(snapshot, std::bind(&TransactionBaseImpl::ReleaseSnapshot,
|
|
this, std::placeholders::_1, db_));
|
|
snapshot_needed_ = false;
|
|
snapshot_notifier_ = nullptr;
|
|
}
|
|
|
|
void TransactionBaseImpl::SetSnapshotOnNextOperation(
|
|
std::shared_ptr<TransactionNotifier> notifier) {
|
|
snapshot_needed_ = true;
|
|
snapshot_notifier_ = notifier;
|
|
}
|
|
|
|
void TransactionBaseImpl::SetSnapshotIfNeeded() {
|
|
if (snapshot_needed_) {
|
|
std::shared_ptr<TransactionNotifier> notifier = snapshot_notifier_;
|
|
SetSnapshot();
|
|
if (notifier != nullptr) {
|
|
notifier->SnapshotCreated(GetSnapshot());
|
|
}
|
|
}
|
|
}
|
|
|
|
Status TransactionBaseImpl::TryLock(ColumnFamilyHandle* column_family,
|
|
const SliceParts& key, bool read_only,
|
|
bool exclusive, const bool do_validate,
|
|
const bool assume_tracked) {
|
|
size_t key_size = 0;
|
|
for (int i = 0; i < key.num_parts; ++i) {
|
|
key_size += key.parts[i].size();
|
|
}
|
|
|
|
std::string str;
|
|
str.reserve(key_size);
|
|
|
|
for (int i = 0; i < key.num_parts; ++i) {
|
|
str.append(key.parts[i].data(), key.parts[i].size());
|
|
}
|
|
|
|
return TryLock(column_family, str, read_only, exclusive, do_validate,
|
|
assume_tracked);
|
|
}
|
|
|
|
void TransactionBaseImpl::SetSavePoint() {
|
|
if (save_points_ == nullptr) {
|
|
save_points_.reset(new std::stack<TransactionBaseImpl::SavePoint, autovector<TransactionBaseImpl::SavePoint>>());
|
|
}
|
|
save_points_->emplace(snapshot_, snapshot_needed_, snapshot_notifier_,
|
|
num_puts_, num_deletes_, num_merges_,
|
|
lock_tracker_factory_);
|
|
write_batch_.SetSavePoint();
|
|
}
|
|
|
|
Status TransactionBaseImpl::RollbackToSavePoint() {
|
|
if (save_points_ != nullptr && save_points_->size() > 0) {
|
|
// Restore saved SavePoint
|
|
TransactionBaseImpl::SavePoint& save_point = save_points_->top();
|
|
snapshot_ = save_point.snapshot_;
|
|
snapshot_needed_ = save_point.snapshot_needed_;
|
|
snapshot_notifier_ = save_point.snapshot_notifier_;
|
|
num_puts_ = save_point.num_puts_;
|
|
num_deletes_ = save_point.num_deletes_;
|
|
num_merges_ = save_point.num_merges_;
|
|
|
|
// Rollback batch
|
|
Status s = write_batch_.RollbackToSavePoint();
|
|
assert(s.ok());
|
|
|
|
// Rollback any keys that were tracked since the last savepoint
|
|
tracked_locks_->Subtract(*save_point.new_locks_);
|
|
|
|
save_points_->pop();
|
|
|
|
return s;
|
|
} else {
|
|
assert(write_batch_.RollbackToSavePoint().IsNotFound());
|
|
return Status::NotFound();
|
|
}
|
|
}
|
|
|
|
Status TransactionBaseImpl::PopSavePoint() {
|
|
if (save_points_ == nullptr ||
|
|
save_points_->empty()) {
|
|
// No SavePoint yet.
|
|
assert(write_batch_.PopSavePoint().IsNotFound());
|
|
return Status::NotFound();
|
|
}
|
|
|
|
assert(!save_points_->empty());
|
|
// If there is another savepoint A below the current savepoint B, then A needs
|
|
// to inherit tracked_keys in B so that if we rollback to savepoint A, we
|
|
// remember to unlock keys in B. If there is no other savepoint below, then we
|
|
// can safely discard savepoint info.
|
|
if (save_points_->size() == 1) {
|
|
save_points_->pop();
|
|
} else {
|
|
TransactionBaseImpl::SavePoint top(lock_tracker_factory_);
|
|
std::swap(top, save_points_->top());
|
|
save_points_->pop();
|
|
|
|
save_points_->top().new_locks_->Merge(*top.new_locks_);
|
|
}
|
|
|
|
return write_batch_.PopSavePoint();
|
|
}
|
|
|
|
Status TransactionBaseImpl::Get(const ReadOptions& read_options,
|
|
ColumnFamilyHandle* column_family,
|
|
const Slice& key, std::string* value) {
|
|
assert(value != nullptr);
|
|
PinnableSlice pinnable_val(value);
|
|
assert(!pinnable_val.IsPinned());
|
|
auto s = Get(read_options, column_family, key, &pinnable_val);
|
|
if (s.ok() && pinnable_val.IsPinned()) {
|
|
value->assign(pinnable_val.data(), pinnable_val.size());
|
|
} // else value is already assigned
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::Get(const ReadOptions& read_options,
|
|
ColumnFamilyHandle* column_family,
|
|
const Slice& key, PinnableSlice* pinnable_val) {
|
|
return write_batch_.GetFromBatchAndDB(db_, read_options, column_family, key,
|
|
pinnable_val);
|
|
}
|
|
|
|
Status TransactionBaseImpl::GetForUpdate(const ReadOptions& read_options,
|
|
ColumnFamilyHandle* column_family,
|
|
const Slice& key, std::string* value,
|
|
bool exclusive,
|
|
const bool do_validate) {
|
|
if (!do_validate && read_options.snapshot != nullptr) {
|
|
return Status::InvalidArgument(
|
|
"If do_validate is false then GetForUpdate with snapshot is not "
|
|
"defined.");
|
|
}
|
|
Status s =
|
|
TryLock(column_family, key, true /* read_only */, exclusive, do_validate);
|
|
|
|
if (s.ok() && value != nullptr) {
|
|
assert(value != nullptr);
|
|
PinnableSlice pinnable_val(value);
|
|
assert(!pinnable_val.IsPinned());
|
|
s = Get(read_options, column_family, key, &pinnable_val);
|
|
if (s.ok() && pinnable_val.IsPinned()) {
|
|
value->assign(pinnable_val.data(), pinnable_val.size());
|
|
} // else value is already assigned
|
|
}
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::GetForUpdate(const ReadOptions& read_options,
|
|
ColumnFamilyHandle* column_family,
|
|
const Slice& key,
|
|
PinnableSlice* pinnable_val,
|
|
bool exclusive,
|
|
const bool do_validate) {
|
|
if (!do_validate && read_options.snapshot != nullptr) {
|
|
return Status::InvalidArgument(
|
|
"If do_validate is false then GetForUpdate with snapshot is not "
|
|
"defined.");
|
|
}
|
|
Status s =
|
|
TryLock(column_family, key, true /* read_only */, exclusive, do_validate);
|
|
|
|
if (s.ok() && pinnable_val != nullptr) {
|
|
s = Get(read_options, column_family, key, pinnable_val);
|
|
}
|
|
return s;
|
|
}
|
|
|
|
std::vector<Status> TransactionBaseImpl::MultiGet(
|
|
const ReadOptions& read_options,
|
|
const std::vector<ColumnFamilyHandle*>& column_family,
|
|
const std::vector<Slice>& keys, std::vector<std::string>* values) {
|
|
size_t num_keys = keys.size();
|
|
values->resize(num_keys);
|
|
|
|
std::vector<Status> stat_list(num_keys);
|
|
for (size_t i = 0; i < num_keys; ++i) {
|
|
stat_list[i] = Get(read_options, column_family[i], keys[i], &(*values)[i]);
|
|
}
|
|
|
|
return stat_list;
|
|
}
|
|
|
|
void TransactionBaseImpl::MultiGet(const ReadOptions& read_options,
|
|
ColumnFamilyHandle* column_family,
|
|
const size_t num_keys, const Slice* keys,
|
|
PinnableSlice* values, Status* statuses,
|
|
const bool sorted_input) {
|
|
write_batch_.MultiGetFromBatchAndDB(db_, read_options, column_family,
|
|
num_keys, keys, values, statuses,
|
|
sorted_input);
|
|
}
|
|
|
|
std::vector<Status> TransactionBaseImpl::MultiGetForUpdate(
|
|
const ReadOptions& read_options,
|
|
const std::vector<ColumnFamilyHandle*>& column_family,
|
|
const std::vector<Slice>& keys, std::vector<std::string>* values) {
|
|
// Regardless of whether the MultiGet succeeded, track these keys.
|
|
size_t num_keys = keys.size();
|
|
values->resize(num_keys);
|
|
|
|
// Lock all keys
|
|
for (size_t i = 0; i < num_keys; ++i) {
|
|
Status s = TryLock(column_family[i], keys[i], true /* read_only */,
|
|
true /* exclusive */);
|
|
if (!s.ok()) {
|
|
// Fail entire multiget if we cannot lock all keys
|
|
return std::vector<Status>(num_keys, s);
|
|
}
|
|
}
|
|
|
|
// TODO(agiardullo): optimize multiget?
|
|
std::vector<Status> stat_list(num_keys);
|
|
for (size_t i = 0; i < num_keys; ++i) {
|
|
stat_list[i] = Get(read_options, column_family[i], keys[i], &(*values)[i]);
|
|
}
|
|
|
|
return stat_list;
|
|
}
|
|
|
|
Iterator* TransactionBaseImpl::GetIterator(const ReadOptions& read_options) {
|
|
Iterator* db_iter = db_->NewIterator(read_options);
|
|
assert(db_iter);
|
|
|
|
return write_batch_.NewIteratorWithBase(db_->DefaultColumnFamily(), db_iter,
|
|
&read_options);
|
|
}
|
|
|
|
Iterator* TransactionBaseImpl::GetIterator(const ReadOptions& read_options,
|
|
ColumnFamilyHandle* column_family) {
|
|
Iterator* db_iter = db_->NewIterator(read_options, column_family);
|
|
assert(db_iter);
|
|
|
|
return write_batch_.NewIteratorWithBase(column_family, db_iter,
|
|
&read_options);
|
|
}
|
|
|
|
Status TransactionBaseImpl::Put(ColumnFamilyHandle* column_family,
|
|
const Slice& key, const Slice& value,
|
|
const bool assume_tracked) {
|
|
const bool do_validate = !assume_tracked;
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, do_validate, assume_tracked);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Put(column_family, key, value);
|
|
if (s.ok()) {
|
|
num_puts_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::Put(ColumnFamilyHandle* column_family,
|
|
const SliceParts& key, const SliceParts& value,
|
|
const bool assume_tracked) {
|
|
const bool do_validate = !assume_tracked;
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, do_validate, assume_tracked);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Put(column_family, key, value);
|
|
if (s.ok()) {
|
|
num_puts_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::Merge(ColumnFamilyHandle* column_family,
|
|
const Slice& key, const Slice& value,
|
|
const bool assume_tracked) {
|
|
const bool do_validate = !assume_tracked;
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, do_validate, assume_tracked);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Merge(column_family, key, value);
|
|
if (s.ok()) {
|
|
num_merges_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::Delete(ColumnFamilyHandle* column_family,
|
|
const Slice& key,
|
|
const bool assume_tracked) {
|
|
const bool do_validate = !assume_tracked;
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, do_validate, assume_tracked);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Delete(column_family, key);
|
|
if (s.ok()) {
|
|
num_deletes_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::Delete(ColumnFamilyHandle* column_family,
|
|
const SliceParts& key,
|
|
const bool assume_tracked) {
|
|
const bool do_validate = !assume_tracked;
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, do_validate, assume_tracked);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Delete(column_family, key);
|
|
if (s.ok()) {
|
|
num_deletes_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::SingleDelete(ColumnFamilyHandle* column_family,
|
|
const Slice& key,
|
|
const bool assume_tracked) {
|
|
const bool do_validate = !assume_tracked;
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, do_validate, assume_tracked);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->SingleDelete(column_family, key);
|
|
if (s.ok()) {
|
|
num_deletes_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::SingleDelete(ColumnFamilyHandle* column_family,
|
|
const SliceParts& key,
|
|
const bool assume_tracked) {
|
|
const bool do_validate = !assume_tracked;
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, do_validate, assume_tracked);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->SingleDelete(column_family, key);
|
|
if (s.ok()) {
|
|
num_deletes_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::PutUntracked(ColumnFamilyHandle* column_family,
|
|
const Slice& key, const Slice& value) {
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, false /* do_validate */);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Put(column_family, key, value);
|
|
if (s.ok()) {
|
|
num_puts_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::PutUntracked(ColumnFamilyHandle* column_family,
|
|
const SliceParts& key,
|
|
const SliceParts& value) {
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, false /* do_validate */);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Put(column_family, key, value);
|
|
if (s.ok()) {
|
|
num_puts_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::MergeUntracked(ColumnFamilyHandle* column_family,
|
|
const Slice& key,
|
|
const Slice& value) {
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, false /* do_validate */);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Merge(column_family, key, value);
|
|
if (s.ok()) {
|
|
num_merges_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::DeleteUntracked(ColumnFamilyHandle* column_family,
|
|
const Slice& key) {
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, false /* do_validate */);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Delete(column_family, key);
|
|
if (s.ok()) {
|
|
num_deletes_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::DeleteUntracked(ColumnFamilyHandle* column_family,
|
|
const SliceParts& key) {
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, false /* do_validate */);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->Delete(column_family, key);
|
|
if (s.ok()) {
|
|
num_deletes_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status TransactionBaseImpl::SingleDeleteUntracked(
|
|
ColumnFamilyHandle* column_family, const Slice& key) {
|
|
Status s = TryLock(column_family, key, false /* read_only */,
|
|
true /* exclusive */, false /* do_validate */);
|
|
|
|
if (s.ok()) {
|
|
s = GetBatchForWrite()->SingleDelete(column_family, key);
|
|
if (s.ok()) {
|
|
num_deletes_++;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
void TransactionBaseImpl::PutLogData(const Slice& blob) {
|
|
auto s = write_batch_.PutLogData(blob);
|
|
(void)s;
|
|
assert(s.ok());
|
|
}
|
|
|
|
WriteBatchWithIndex* TransactionBaseImpl::GetWriteBatch() {
|
|
return &write_batch_;
|
|
}
|
|
|
|
uint64_t TransactionBaseImpl::GetElapsedTime() const {
|
|
return (dbimpl_->GetSystemClock()->NowMicros() - start_time_) / 1000;
|
|
}
|
|
|
|
uint64_t TransactionBaseImpl::GetNumPuts() const { return num_puts_; }
|
|
|
|
uint64_t TransactionBaseImpl::GetNumDeletes() const { return num_deletes_; }
|
|
|
|
uint64_t TransactionBaseImpl::GetNumMerges() const { return num_merges_; }
|
|
|
|
uint64_t TransactionBaseImpl::GetNumKeys() const {
|
|
return tracked_locks_->GetNumPointLocks();
|
|
}
|
|
|
|
void TransactionBaseImpl::TrackKey(uint32_t cfh_id, const std::string& key,
|
|
SequenceNumber seq, bool read_only,
|
|
bool exclusive) {
|
|
PointLockRequest r;
|
|
r.column_family_id = cfh_id;
|
|
r.key = key;
|
|
r.seq = seq;
|
|
r.read_only = read_only;
|
|
r.exclusive = exclusive;
|
|
|
|
// Update map of all tracked keys for this transaction
|
|
tracked_locks_->Track(r);
|
|
|
|
if (save_points_ != nullptr && !save_points_->empty()) {
|
|
// Update map of tracked keys in this SavePoint
|
|
save_points_->top().new_locks_->Track(r);
|
|
}
|
|
}
|
|
|
|
// Gets the write batch that should be used for Put/Merge/Deletes.
|
|
//
|
|
// Returns either a WriteBatch or WriteBatchWithIndex depending on whether
|
|
// DisableIndexing() has been called.
|
|
WriteBatchBase* TransactionBaseImpl::GetBatchForWrite() {
|
|
if (indexing_enabled_) {
|
|
// Use WriteBatchWithIndex
|
|
return &write_batch_;
|
|
} else {
|
|
// Don't use WriteBatchWithIndex. Return base WriteBatch.
|
|
return write_batch_.GetWriteBatch();
|
|
}
|
|
}
|
|
|
|
void TransactionBaseImpl::ReleaseSnapshot(const Snapshot* snapshot, DB* db) {
|
|
if (snapshot != nullptr) {
|
|
ROCKS_LOG_DETAILS(dbimpl_->immutable_db_options().info_log,
|
|
"ReleaseSnapshot %" PRIu64 " Set",
|
|
snapshot->GetSequenceNumber());
|
|
db->ReleaseSnapshot(snapshot);
|
|
}
|
|
}
|
|
|
|
void TransactionBaseImpl::UndoGetForUpdate(ColumnFamilyHandle* column_family,
|
|
const Slice& key) {
|
|
PointLockRequest r;
|
|
r.column_family_id = GetColumnFamilyID(column_family);
|
|
r.key = key.ToString();
|
|
r.read_only = true;
|
|
|
|
bool can_untrack = false;
|
|
if (save_points_ != nullptr && !save_points_->empty()) {
|
|
// If there is no GetForUpdate of the key in this save point,
|
|
// then cannot untrack from the global lock tracker.
|
|
UntrackStatus s = save_points_->top().new_locks_->Untrack(r);
|
|
can_untrack = (s != UntrackStatus::NOT_TRACKED);
|
|
} else {
|
|
// No save point, so can untrack from the global lock tracker.
|
|
can_untrack = true;
|
|
}
|
|
|
|
if (can_untrack) {
|
|
// If erased from the global tracker, then can unlock the key.
|
|
UntrackStatus s = tracked_locks_->Untrack(r);
|
|
bool can_unlock = (s == UntrackStatus::REMOVED);
|
|
if (can_unlock) {
|
|
UnlockGetForUpdate(column_family, key);
|
|
}
|
|
}
|
|
}
|
|
|
|
Status TransactionBaseImpl::RebuildFromWriteBatch(WriteBatch* src_batch) {
|
|
struct IndexedWriteBatchBuilder : public WriteBatch::Handler {
|
|
Transaction* txn_;
|
|
DBImpl* db_;
|
|
IndexedWriteBatchBuilder(Transaction* txn, DBImpl* db)
|
|
: txn_(txn), db_(db) {
|
|
assert(dynamic_cast<TransactionBaseImpl*>(txn_) != nullptr);
|
|
}
|
|
|
|
Status PutCF(uint32_t cf, const Slice& key, const Slice& val) override {
|
|
return txn_->Put(db_->GetColumnFamilyHandle(cf), key, val);
|
|
}
|
|
|
|
Status DeleteCF(uint32_t cf, const Slice& key) override {
|
|
return txn_->Delete(db_->GetColumnFamilyHandle(cf), key);
|
|
}
|
|
|
|
Status SingleDeleteCF(uint32_t cf, const Slice& key) override {
|
|
return txn_->SingleDelete(db_->GetColumnFamilyHandle(cf), key);
|
|
}
|
|
|
|
Status MergeCF(uint32_t cf, const Slice& key, const Slice& val) override {
|
|
return txn_->Merge(db_->GetColumnFamilyHandle(cf), key, val);
|
|
}
|
|
|
|
// this is used for reconstructing prepared transactions upon
|
|
// recovery. there should not be any meta markers in the batches
|
|
// we are processing.
|
|
Status MarkBeginPrepare(bool) override { return Status::InvalidArgument(); }
|
|
|
|
Status MarkEndPrepare(const Slice&) override {
|
|
return Status::InvalidArgument();
|
|
}
|
|
|
|
Status MarkCommit(const Slice&) override {
|
|
return Status::InvalidArgument();
|
|
}
|
|
|
|
Status MarkCommitWithTimestamp(const Slice&, const Slice&) override {
|
|
return Status::InvalidArgument();
|
|
}
|
|
|
|
Status MarkRollback(const Slice&) override {
|
|
return Status::InvalidArgument();
|
|
}
|
|
};
|
|
|
|
IndexedWriteBatchBuilder copycat(this, dbimpl_);
|
|
return src_batch->Iterate(©cat);
|
|
}
|
|
|
|
WriteBatch* TransactionBaseImpl::GetCommitTimeWriteBatch() {
|
|
return &commit_time_batch_;
|
|
}
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
#endif // ROCKSDB_LITE
|