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rocksdb/db/version_edit.cc
Peter Dillinger c9ce4a3d6b Improve atomicity of SetOptions, skip manifest write (#13384) 
Summary:
Motivated by code review issue in https://github.com/facebook/rocksdb/issues/13316, we don't want to release the DB mutex in SetOptions between updating the cfd latest options and installing the new Version and SuperVersion. SetOptions uses LogAndApply to install a new Version but this currently incurs an unnecessary manifest write. (This is not a big performance concern because SetOptions dumps a new OPTIONS file, which is much larger than the redundant manifest update.) Since we don't want IO while holding the DB mutex, we need to get rid of the manifest write, and that's what this change does. We introduce a kind of dummy VersionEdit that allows the existing code paths of LogAndApply to install a new Version (with the updated mutable options), recompute resulting compaction scores etc., but without the manifest write.

Part of the validation for this is new assertions in SetOptions verifying the consistency of the various copies of MutableCFOptions. (I'm not convinced we need it in SuperVersion in addition to Version, but that's not for here and now.) These checks depend on defaulted `operator==` so depend on C++20.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/13384

Test Plan:
New unit test in addition to new assertions. SetOptions already tested heavily in crash test. Used
`ROCKSDB_CXX_STANDARD=c++20 make -j100 check` to ensure the new assertions are verified

Reviewed By: cbi42

Differential Revision: D69408829

Pulled By: pdillinger

fbshipit-source-id: 4cf026010c6bb381e0ea27567cce2708d4678e7d
2025-02-10 16:46:13 -08:00

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// 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).
//
// 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 "db/version_edit.h"
#include "db/blob/blob_index.h"
#include "db/version_set.h"
#include "logging/event_logger.h"
#include "rocksdb/slice.h"
#include "table/unique_id_impl.h"
#include "test_util/sync_point.h"
#include "util/coding.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
namespace {} // anonymous namespace
uint64_t PackFileNumberAndPathId(uint64_t number, uint64_t path_id) {
assert(number <= kFileNumberMask);
return number | (path_id * (kFileNumberMask + 1));
}
Status FileMetaData::UpdateBoundaries(const Slice& key, const Slice& value,
SequenceNumber seqno,
ValueType value_type) {
if (value_type == kTypeBlobIndex) {
BlobIndex blob_index;
const Status s = blob_index.DecodeFrom(value);
if (!s.ok()) {
return s;
}
if (!blob_index.IsInlined() && !blob_index.HasTTL()) {
if (blob_index.file_number() == kInvalidBlobFileNumber) {
return Status::Corruption("Invalid blob file number");
}
if (oldest_blob_file_number == kInvalidBlobFileNumber ||
oldest_blob_file_number > blob_index.file_number()) {
oldest_blob_file_number = blob_index.file_number();
}
}
}
if (smallest.size() == 0) {
smallest.DecodeFrom(key);
}
largest.DecodeFrom(key);
fd.smallest_seqno = std::min(fd.smallest_seqno, seqno);
fd.largest_seqno = std::max(fd.largest_seqno, seqno);
return Status::OK();
}
void VersionEdit::Clear() { *this = VersionEdit(); }
bool VersionEdit::EncodeTo(std::string* dst,
std::optional<size_t> ts_sz) const {
assert(!IsNoManifestWriteDummy());
if (has_db_id_) {
PutVarint32(dst, kDbId);
PutLengthPrefixedSlice(dst, db_id_);
}
if (has_comparator_) {
assert(has_persist_user_defined_timestamps_);
PutVarint32(dst, kComparator);
PutLengthPrefixedSlice(dst, comparator_);
}
if (has_log_number_) {
PutVarint32Varint64(dst, kLogNumber, log_number_);
}
if (has_prev_log_number_) {
PutVarint32Varint64(dst, kPrevLogNumber, prev_log_number_);
}
if (has_next_file_number_) {
PutVarint32Varint64(dst, kNextFileNumber, next_file_number_);
}
if (has_max_column_family_) {
PutVarint32Varint32(dst, kMaxColumnFamily, max_column_family_);
}
if (has_min_log_number_to_keep_) {
PutVarint32Varint64(dst, kMinLogNumberToKeep, min_log_number_to_keep_);
}
if (has_last_sequence_) {
PutVarint32Varint64(dst, kLastSequence, last_sequence_);
}
for (size_t i = 0; i < compact_cursors_.size(); i++) {
if (compact_cursors_[i].second.Valid()) {
PutVarint32(dst, kCompactCursor);
PutVarint32(dst, compact_cursors_[i].first); // level
PutLengthPrefixedSlice(dst, compact_cursors_[i].second.Encode());
}
}
for (const auto& deleted : deleted_files_) {
PutVarint32Varint32Varint64(dst, kDeletedFile, deleted.first /* level */,
deleted.second /* file number */);
}
bool min_log_num_written = false;
assert(new_files_.empty() || ts_sz.has_value());
for (size_t i = 0; i < new_files_.size(); i++) {
const FileMetaData& f = new_files_[i].second;
if (!f.smallest.Valid() || !f.largest.Valid() ||
f.epoch_number == kUnknownEpochNumber) {
return false;
}
PutVarint32(dst, kNewFile4);
PutVarint32Varint64(dst, new_files_[i].first /* level */, f.fd.GetNumber());
PutVarint64(dst, f.fd.GetFileSize());
EncodeFileBoundaries(dst, f, ts_sz.value());
PutVarint64Varint64(dst, f.fd.smallest_seqno, f.fd.largest_seqno);
// Customized fields' format:
// +-----------------------------+
// | 1st field's tag (varint32) |
// +-----------------------------+
// | 1st field's size (varint32) |
// +-----------------------------+
// | bytes for 1st field |
// | (based on size decoded) |
// +-----------------------------+
// | |
// | ...... |
// | |
// +-----------------------------+
// | last field's size (varint32)|
// +-----------------------------+
// | bytes for last field |
// | (based on size decoded) |
// +-----------------------------+
// | terminating tag (varint32) |
// +-----------------------------+
//
// Customized encoding for fields:
// tag kPathId: 1 byte as path_id
// tag kNeedCompaction:
// now only can take one char value 1 indicating need-compaction
//
PutVarint32(dst, NewFileCustomTag::kOldestAncesterTime);
std::string varint_oldest_ancester_time;
PutVarint64(&varint_oldest_ancester_time, f.oldest_ancester_time);
TEST_SYNC_POINT_CALLBACK("VersionEdit::EncodeTo:VarintOldestAncesterTime",
&varint_oldest_ancester_time);
PutLengthPrefixedSlice(dst, Slice(varint_oldest_ancester_time));
PutVarint32(dst, NewFileCustomTag::kFileCreationTime);
std::string varint_file_creation_time;
PutVarint64(&varint_file_creation_time, f.file_creation_time);
TEST_SYNC_POINT_CALLBACK("VersionEdit::EncodeTo:VarintFileCreationTime",
&varint_file_creation_time);
PutLengthPrefixedSlice(dst, Slice(varint_file_creation_time));
PutVarint32(dst, NewFileCustomTag::kEpochNumber);
std::string varint_epoch_number;
PutVarint64(&varint_epoch_number, f.epoch_number);
PutLengthPrefixedSlice(dst, Slice(varint_epoch_number));
if (f.file_checksum_func_name != kUnknownFileChecksumFuncName) {
PutVarint32(dst, NewFileCustomTag::kFileChecksum);
PutLengthPrefixedSlice(dst, Slice(f.file_checksum));
PutVarint32(dst, NewFileCustomTag::kFileChecksumFuncName);
PutLengthPrefixedSlice(dst, Slice(f.file_checksum_func_name));
}
if (f.fd.GetPathId() != 0) {
PutVarint32(dst, NewFileCustomTag::kPathId);
char p = static_cast<char>(f.fd.GetPathId());
PutLengthPrefixedSlice(dst, Slice(&p, 1));
}
if (f.temperature != Temperature::kUnknown) {
PutVarint32(dst, NewFileCustomTag::kTemperature);
char p = static_cast<char>(f.temperature);
PutLengthPrefixedSlice(dst, Slice(&p, 1));
}
if (f.marked_for_compaction) {
PutVarint32(dst, NewFileCustomTag::kNeedCompaction);
char p = static_cast<char>(1);
PutLengthPrefixedSlice(dst, Slice(&p, 1));
}
if (has_min_log_number_to_keep_ && !min_log_num_written) {
PutVarint32(dst, NewFileCustomTag::kMinLogNumberToKeepHack);
std::string varint_log_number;
PutFixed64(&varint_log_number, min_log_number_to_keep_);
PutLengthPrefixedSlice(dst, Slice(varint_log_number));
min_log_num_written = true;
}
if (f.oldest_blob_file_number != kInvalidBlobFileNumber) {
PutVarint32(dst, NewFileCustomTag::kOldestBlobFileNumber);
std::string oldest_blob_file_number;
PutVarint64(&oldest_blob_file_number, f.oldest_blob_file_number);
PutLengthPrefixedSlice(dst, Slice(oldest_blob_file_number));
}
UniqueId64x2 unique_id = f.unique_id;
TEST_SYNC_POINT_CALLBACK("VersionEdit::EncodeTo:UniqueId", &unique_id);
if (unique_id != kNullUniqueId64x2) {
PutVarint32(dst, NewFileCustomTag::kUniqueId);
std::string unique_id_str = EncodeUniqueIdBytes(&unique_id);
PutLengthPrefixedSlice(dst, Slice(unique_id_str));
}
if (f.compensated_range_deletion_size) {
PutVarint32(dst, kCompensatedRangeDeletionSize);
std::string compensated_range_deletion_size;
PutVarint64(&compensated_range_deletion_size,
f.compensated_range_deletion_size);
PutLengthPrefixedSlice(dst, Slice(compensated_range_deletion_size));
}
if (f.tail_size) {
PutVarint32(dst, NewFileCustomTag::kTailSize);
std::string varint_tail_size;
PutVarint64(&varint_tail_size, f.tail_size);
PutLengthPrefixedSlice(dst, Slice(varint_tail_size));
}
if (!f.user_defined_timestamps_persisted) {
// The default value for the flag is true, it's only explicitly persisted
// when it's false. We are putting 0 as the value here to signal false
// (i.e. UDTS not persisted).
PutVarint32(dst, NewFileCustomTag::kUserDefinedTimestampsPersisted);
char p = static_cast<char>(0);
PutLengthPrefixedSlice(dst, Slice(&p, 1));
}
TEST_SYNC_POINT_CALLBACK("VersionEdit::EncodeTo:NewFile4:CustomizeFields",
dst);
PutVarint32(dst, NewFileCustomTag::kTerminate);
}
for (const auto& blob_file_addition : blob_file_additions_) {
PutVarint32(dst, kBlobFileAddition);
blob_file_addition.EncodeTo(dst);
}
for (const auto& blob_file_garbage : blob_file_garbages_) {
PutVarint32(dst, kBlobFileGarbage);
blob_file_garbage.EncodeTo(dst);
}
for (const auto& wal_addition : wal_additions_) {
PutVarint32(dst, kWalAddition2);
std::string encoded;
wal_addition.EncodeTo(&encoded);
PutLengthPrefixedSlice(dst, encoded);
}
if (!wal_deletion_.IsEmpty()) {
PutVarint32(dst, kWalDeletion2);
std::string encoded;
wal_deletion_.EncodeTo(&encoded);
PutLengthPrefixedSlice(dst, encoded);
}
// 0 is default and does not need to be explicitly written
if (column_family_ != 0) {
PutVarint32Varint32(dst, kColumnFamily, column_family_);
}
if (is_column_family_add_) {
PutVarint32(dst, kColumnFamilyAdd);
PutLengthPrefixedSlice(dst, Slice(column_family_name_));
}
if (is_column_family_drop_) {
PutVarint32(dst, kColumnFamilyDrop);
}
if (is_in_atomic_group_) {
PutVarint32(dst, kInAtomicGroup);
PutVarint32(dst, remaining_entries_);
}
if (HasFullHistoryTsLow()) {
PutVarint32(dst, kFullHistoryTsLow);
PutLengthPrefixedSlice(dst, full_history_ts_low_);
}
if (HasPersistUserDefinedTimestamps()) {
// persist_user_defined_timestamps flag should be logged in the same
// VersionEdit as the user comparator name.
assert(has_comparator_);
PutVarint32(dst, kPersistUserDefinedTimestamps);
char p = static_cast<char>(persist_user_defined_timestamps_);
PutLengthPrefixedSlice(dst, Slice(&p, 1));
}
return true;
}
static bool GetInternalKey(Slice* input, InternalKey* dst) {
Slice str;
if (GetLengthPrefixedSlice(input, &str)) {
dst->DecodeFrom(str);
return dst->Valid();
} else {
return false;
}
}
bool VersionEdit::GetLevel(Slice* input, int* level, const char** /*msg*/) {
uint32_t v = 0;
if (GetVarint32(input, &v)) {
*level = v;
if (max_level_ < *level) {
max_level_ = *level;
}
return true;
} else {
return false;
}
}
const char* VersionEdit::DecodeNewFile4From(Slice* input) {
const char* msg = nullptr;
int level = 0;
FileMetaData f;
uint64_t number = 0;
uint32_t path_id = 0;
uint64_t file_size = 0;
SequenceNumber smallest_seqno = 0;
SequenceNumber largest_seqno = kMaxSequenceNumber;
if (GetLevel(input, &level, &msg) && GetVarint64(input, &number) &&
GetVarint64(input, &file_size) && GetInternalKey(input, &f.smallest) &&
GetInternalKey(input, &f.largest) &&
GetVarint64(input, &smallest_seqno) &&
GetVarint64(input, &largest_seqno)) {
// See comments in VersionEdit::EncodeTo() for format of customized fields
while (true) {
uint32_t custom_tag = 0;
Slice field;
if (!GetVarint32(input, &custom_tag)) {
return "new-file4 custom field";
}
if (custom_tag == kTerminate) {
break;
}
if (!GetLengthPrefixedSlice(input, &field)) {
return "new-file4 custom field length prefixed slice error";
}
switch (custom_tag) {
case kPathId:
if (field.size() != 1) {
return "path_id field wrong size";
}
path_id = field[0];
if (path_id > 3) {
return "path_id wrong vaue";
}
break;
case kOldestAncesterTime:
if (!GetVarint64(&field, &f.oldest_ancester_time)) {
return "invalid oldest ancester time";
}
break;
case kFileCreationTime:
if (!GetVarint64(&field, &f.file_creation_time)) {
return "invalid file creation time";
}
break;
case kEpochNumber:
if (!GetVarint64(&field, &f.epoch_number)) {
return "invalid epoch number";
}
break;
case kFileChecksum:
f.file_checksum = field.ToString();
break;
case kFileChecksumFuncName:
f.file_checksum_func_name = field.ToString();
break;
case kNeedCompaction:
if (field.size() != 1) {
return "need_compaction field wrong size";
}
f.marked_for_compaction = (field[0] == 1);
break;
case kMinLogNumberToKeepHack:
// This is a hack to encode kMinLogNumberToKeep in a
// forward-compatible fashion.
if (!GetFixed64(&field, &min_log_number_to_keep_)) {
return "deleted log number malformatted";
}
has_min_log_number_to_keep_ = true;
break;
case kOldestBlobFileNumber:
if (!GetVarint64(&field, &f.oldest_blob_file_number)) {
return "invalid oldest blob file number";
}
break;
case kTemperature:
if (field.size() != 1) {
return "temperature field wrong size";
} else {
Temperature casted_field = static_cast<Temperature>(field[0]);
if (casted_field <= Temperature::kCold) {
f.temperature = casted_field;
}
}
break;
case kUniqueId:
if (!DecodeUniqueIdBytes(field.ToString(), &f.unique_id).ok()) {
f.unique_id = kNullUniqueId64x2;
return "invalid unique id";
}
break;
case kCompensatedRangeDeletionSize:
if (!GetVarint64(&field, &f.compensated_range_deletion_size)) {
return "Invalid compensated range deletion size";
}
break;
case kTailSize:
if (!GetVarint64(&field, &f.tail_size)) {
return "invalid tail start offset";
}
break;
case kUserDefinedTimestampsPersisted:
if (field.size() != 1) {
return "user-defined timestamps persisted field wrong size";
}
f.user_defined_timestamps_persisted = (field[0] == 1);
break;
default:
if ((custom_tag & kCustomTagNonSafeIgnoreMask) != 0) {
// Should not proceed if cannot understand it
return "new-file4 custom field not supported";
}
break;
}
}
} else {
return "new-file4 entry";
}
f.fd =
FileDescriptor(number, path_id, file_size, smallest_seqno, largest_seqno);
new_files_.push_back(std::make_pair(level, f));
return nullptr;
}
void VersionEdit::EncodeFileBoundaries(std::string* dst,
const FileMetaData& meta,
size_t ts_sz) const {
if (ts_sz == 0 || meta.user_defined_timestamps_persisted) {
PutLengthPrefixedSlice(dst, meta.smallest.Encode());
PutLengthPrefixedSlice(dst, meta.largest.Encode());
return;
}
std::string smallest_buf;
std::string largest_buf;
StripTimestampFromInternalKey(&smallest_buf, meta.smallest.Encode(), ts_sz);
StripTimestampFromInternalKey(&largest_buf, meta.largest.Encode(), ts_sz);
PutLengthPrefixedSlice(dst, smallest_buf);
PutLengthPrefixedSlice(dst, largest_buf);
}
Status VersionEdit::DecodeFrom(const Slice& src) {
Clear();
#ifndef NDEBUG
bool ignore_ignorable_tags = false;
TEST_SYNC_POINT_CALLBACK("VersionEdit::EncodeTo:IgnoreIgnorableTags",
&ignore_ignorable_tags);
#endif
Slice input = src;
const char* msg = nullptr;
uint32_t tag = 0;
// Temporary storage for parsing
int level = 0;
FileMetaData f;
Slice str;
InternalKey key;
while (msg == nullptr && GetVarint32(&input, &tag)) {
#ifndef NDEBUG
if (ignore_ignorable_tags && tag > kTagSafeIgnoreMask) {
tag = kTagSafeIgnoreMask;
}
#endif
switch (tag) {
case kDbId:
if (GetLengthPrefixedSlice(&input, &str)) {
db_id_ = str.ToString();
has_db_id_ = true;
} else {
msg = "db id";
}
break;
case kComparator:
if (GetLengthPrefixedSlice(&input, &str)) {
comparator_ = str.ToString();
has_comparator_ = true;
} else {
msg = "comparator name";
}
break;
case kLogNumber:
if (GetVarint64(&input, &log_number_)) {
has_log_number_ = true;
} else {
msg = "log number";
}
break;
case kPrevLogNumber:
if (GetVarint64(&input, &prev_log_number_)) {
has_prev_log_number_ = true;
} else {
msg = "previous log number";
}
break;
case kNextFileNumber:
if (GetVarint64(&input, &next_file_number_)) {
has_next_file_number_ = true;
} else {
msg = "next file number";
}
break;
case kMaxColumnFamily:
if (GetVarint32(&input, &max_column_family_)) {
has_max_column_family_ = true;
} else {
msg = "max column family";
}
break;
case kMinLogNumberToKeep:
if (GetVarint64(&input, &min_log_number_to_keep_)) {
has_min_log_number_to_keep_ = true;
} else {
msg = "min log number to kee";
}
break;
case kLastSequence:
if (GetVarint64(&input, &last_sequence_)) {
has_last_sequence_ = true;
} else {
msg = "last sequence number";
}
break;
case kCompactCursor:
if (GetLevel(&input, &level, &msg) && GetInternalKey(&input, &key)) {
// Here we re-use the output format of compact pointer in LevelDB
// to persist compact_cursors_
compact_cursors_.push_back(std::make_pair(level, key));
} else {
if (!msg) {
msg = "compaction cursor";
}
}
break;
case kDeletedFile: {
uint64_t number = 0;
if (GetLevel(&input, &level, &msg) && GetVarint64(&input, &number)) {
deleted_files_.insert(std::make_pair(level, number));
} else {
if (!msg) {
msg = "deleted file";
}
}
break;
}
case kNewFile: {
uint64_t number = 0;
uint64_t file_size = 0;
if (GetLevel(&input, &level, &msg) && GetVarint64(&input, &number) &&
GetVarint64(&input, &file_size) &&
GetInternalKey(&input, &f.smallest) &&
GetInternalKey(&input, &f.largest)) {
f.fd = FileDescriptor(number, 0, file_size);
new_files_.push_back(std::make_pair(level, f));
} else {
if (!msg) {
msg = "new-file entry";
}
}
break;
}
case kNewFile2: {
uint64_t number = 0;
uint64_t file_size = 0;
SequenceNumber smallest_seqno = 0;
SequenceNumber largest_seqno = kMaxSequenceNumber;
if (GetLevel(&input, &level, &msg) && GetVarint64(&input, &number) &&
GetVarint64(&input, &file_size) &&
GetInternalKey(&input, &f.smallest) &&
GetInternalKey(&input, &f.largest) &&
GetVarint64(&input, &smallest_seqno) &&
GetVarint64(&input, &largest_seqno)) {
f.fd = FileDescriptor(number, 0, file_size, smallest_seqno,
largest_seqno);
new_files_.push_back(std::make_pair(level, f));
} else {
if (!msg) {
msg = "new-file2 entry";
}
}
break;
}
case kNewFile3: {
uint64_t number = 0;
uint32_t path_id = 0;
uint64_t file_size = 0;
SequenceNumber smallest_seqno = 0;
SequenceNumber largest_seqno = kMaxSequenceNumber;
if (GetLevel(&input, &level, &msg) && GetVarint64(&input, &number) &&
GetVarint32(&input, &path_id) && GetVarint64(&input, &file_size) &&
GetInternalKey(&input, &f.smallest) &&
GetInternalKey(&input, &f.largest) &&
GetVarint64(&input, &smallest_seqno) &&
GetVarint64(&input, &largest_seqno)) {
f.fd = FileDescriptor(number, path_id, file_size, smallest_seqno,
largest_seqno);
new_files_.push_back(std::make_pair(level, f));
} else {
if (!msg) {
msg = "new-file3 entry";
}
}
break;
}
case kNewFile4: {
msg = DecodeNewFile4From(&input);
break;
}
case kBlobFileAddition:
case kBlobFileAddition_DEPRECATED: {
BlobFileAddition blob_file_addition;
const Status s = blob_file_addition.DecodeFrom(&input);
if (!s.ok()) {
return s;
}
AddBlobFile(std::move(blob_file_addition));
break;
}
case kBlobFileGarbage:
case kBlobFileGarbage_DEPRECATED: {
BlobFileGarbage blob_file_garbage;
const Status s = blob_file_garbage.DecodeFrom(&input);
if (!s.ok()) {
return s;
}
AddBlobFileGarbage(std::move(blob_file_garbage));
break;
}
case kWalAddition: {
WalAddition wal_addition;
const Status s = wal_addition.DecodeFrom(&input);
if (!s.ok()) {
return s;
}
wal_additions_.emplace_back(std::move(wal_addition));
break;
}
case kWalAddition2: {
Slice encoded;
if (!GetLengthPrefixedSlice(&input, &encoded)) {
msg = "WalAddition not prefixed by length";
break;
}
WalAddition wal_addition;
const Status s = wal_addition.DecodeFrom(&encoded);
if (!s.ok()) {
return s;
}
wal_additions_.emplace_back(std::move(wal_addition));
break;
}
case kWalDeletion: {
WalDeletion wal_deletion;
const Status s = wal_deletion.DecodeFrom(&input);
if (!s.ok()) {
return s;
}
wal_deletion_ = std::move(wal_deletion);
break;
}
case kWalDeletion2: {
Slice encoded;
if (!GetLengthPrefixedSlice(&input, &encoded)) {
msg = "WalDeletion not prefixed by length";
break;
}
WalDeletion wal_deletion;
const Status s = wal_deletion.DecodeFrom(&encoded);
if (!s.ok()) {
return s;
}
wal_deletion_ = std::move(wal_deletion);
break;
}
case kColumnFamily:
if (!GetVarint32(&input, &column_family_)) {
if (!msg) {
msg = "set column family id";
}
}
break;
case kColumnFamilyAdd:
if (GetLengthPrefixedSlice(&input, &str)) {
is_column_family_add_ = true;
column_family_name_ = str.ToString();
} else {
if (!msg) {
msg = "column family add";
}
}
break;
case kColumnFamilyDrop:
is_column_family_drop_ = true;
break;
case kInAtomicGroup:
is_in_atomic_group_ = true;
if (!GetVarint32(&input, &remaining_entries_)) {
if (!msg) {
msg = "remaining entries";
}
}
break;
case kFullHistoryTsLow:
if (!GetLengthPrefixedSlice(&input, &str)) {
msg = "full_history_ts_low";
} else if (str.empty()) {
msg = "full_history_ts_low: empty";
} else {
full_history_ts_low_.assign(str.data(), str.size());
}
break;
case kPersistUserDefinedTimestamps:
if (!GetLengthPrefixedSlice(&input, &str)) {
msg = "persist_user_defined_timestamps";
} else if (str.size() != 1) {
msg = "persist_user_defined_timestamps field wrong size";
} else {
persist_user_defined_timestamps_ = (str[0] == 1);
has_persist_user_defined_timestamps_ = true;
}
break;
default:
if (tag & kTagSafeIgnoreMask) {
// Tag from future which can be safely ignored.
// The next field must be the length of the entry.
uint32_t field_len;
if (!GetVarint32(&input, &field_len) ||
static_cast<size_t>(field_len) > input.size()) {
if (!msg) {
msg = "safely ignoreable tag length error";
}
} else {
input.remove_prefix(static_cast<size_t>(field_len));
}
} else {
msg = "unknown tag";
}
break;
}
}
if (msg == nullptr && !input.empty()) {
msg = "invalid tag";
}
Status result;
if (msg != nullptr) {
result = Status::Corruption("VersionEdit", msg);
}
return result;
}
std::string VersionEdit::DebugString(bool hex_key) const {
std::string r;
r.append("VersionEdit {");
if (has_db_id_) {
r.append("\n DB ID: ");
r.append(db_id_);
}
if (has_comparator_) {
r.append("\n Comparator: ");
r.append(comparator_);
}
if (has_persist_user_defined_timestamps_) {
r.append("\n PersistUserDefinedTimestamps: ");
r.append(persist_user_defined_timestamps_ ? "true" : "false");
}
if (has_log_number_) {
r.append("\n LogNumber: ");
AppendNumberTo(&r, log_number_);
}
if (has_prev_log_number_) {
r.append("\n PrevLogNumber: ");
AppendNumberTo(&r, prev_log_number_);
}
if (has_next_file_number_) {
r.append("\n NextFileNumber: ");
AppendNumberTo(&r, next_file_number_);
}
if (has_max_column_family_) {
r.append("\n MaxColumnFamily: ");
AppendNumberTo(&r, max_column_family_);
}
if (has_min_log_number_to_keep_) {
r.append("\n MinLogNumberToKeep: ");
AppendNumberTo(&r, min_log_number_to_keep_);
}
if (has_last_sequence_) {
r.append("\n LastSeq: ");
AppendNumberTo(&r, last_sequence_);
}
for (const auto& level_and_compact_cursor : compact_cursors_) {
r.append("\n CompactCursor: ");
AppendNumberTo(&r, level_and_compact_cursor.first);
r.append(" ");
r.append(level_and_compact_cursor.second.DebugString(hex_key));
}
for (const auto& deleted_file : deleted_files_) {
r.append("\n DeleteFile: ");
AppendNumberTo(&r, deleted_file.first);
r.append(" ");
AppendNumberTo(&r, deleted_file.second);
}
for (size_t i = 0; i < new_files_.size(); i++) {
const FileMetaData& f = new_files_[i].second;
r.append("\n AddFile: ");
AppendNumberTo(&r, new_files_[i].first);
r.append(" ");
AppendNumberTo(&r, f.fd.GetNumber());
r.append(" ");
AppendNumberTo(&r, f.fd.GetFileSize());
r.append(" ");
r.append(f.smallest.DebugString(hex_key));
r.append(" .. ");
r.append(f.largest.DebugString(hex_key));
if (f.oldest_blob_file_number != kInvalidBlobFileNumber) {
r.append(" blob_file:");
AppendNumberTo(&r, f.oldest_blob_file_number);
}
r.append(" oldest_ancester_time:");
AppendNumberTo(&r, f.oldest_ancester_time);
r.append(" file_creation_time:");
AppendNumberTo(&r, f.file_creation_time);
r.append(" epoch_number:");
AppendNumberTo(&r, f.epoch_number);
r.append(" file_checksum:");
r.append(Slice(f.file_checksum).ToString(true));
r.append(" file_checksum_func_name: ");
r.append(f.file_checksum_func_name);
if (f.temperature != Temperature::kUnknown) {
r.append(" temperature: ");
// Maybe change to human readable format whenthe feature becomes
// permanent
r.append(std::to_string(static_cast<int>(f.temperature)));
}
if (f.unique_id != kNullUniqueId64x2) {
r.append(" unique_id(internal): ");
UniqueId64x2 id = f.unique_id;
r.append(InternalUniqueIdToHumanString(&id));
r.append(" public_unique_id: ");
InternalUniqueIdToExternal(&id);
r.append(UniqueIdToHumanString(EncodeUniqueIdBytes(&id)));
}
r.append(" tail size: ");
AppendNumberTo(&r, f.tail_size);
r.append(" User-defined timestamps persisted: ");
r.append(f.user_defined_timestamps_persisted ? "true" : "false");
}
for (const auto& blob_file_addition : blob_file_additions_) {
r.append("\n BlobFileAddition: ");
r.append(blob_file_addition.DebugString());
}
for (const auto& blob_file_garbage : blob_file_garbages_) {
r.append("\n BlobFileGarbage: ");
r.append(blob_file_garbage.DebugString());
}
for (const auto& wal_addition : wal_additions_) {
r.append("\n WalAddition: ");
r.append(wal_addition.DebugString());
}
if (!wal_deletion_.IsEmpty()) {
r.append("\n WalDeletion: ");
r.append(wal_deletion_.DebugString());
}
r.append("\n ColumnFamily: ");
AppendNumberTo(&r, column_family_);
if (is_column_family_add_) {
r.append("\n ColumnFamilyAdd: ");
r.append(column_family_name_);
}
if (is_column_family_drop_) {
r.append("\n ColumnFamilyDrop");
}
if (is_in_atomic_group_) {
r.append("\n AtomicGroup: ");
AppendNumberTo(&r, remaining_entries_);
r.append(" entries remains");
}
if (HasFullHistoryTsLow()) {
r.append("\n FullHistoryTsLow: ");
r.append(Slice(full_history_ts_low_).ToString(hex_key));
}
r.append("\n}\n");
return r;
}
std::string VersionEdit::DebugJSON(int edit_num, bool hex_key) const {
JSONWriter jw;
jw << "EditNumber" << edit_num;
if (has_db_id_) {
jw << "DB ID" << db_id_;
}
if (has_comparator_) {
jw << "Comparator" << comparator_;
}
if (has_log_number_) {
jw << "LogNumber" << log_number_;
}
if (has_prev_log_number_) {
jw << "PrevLogNumber" << prev_log_number_;
}
if (has_next_file_number_) {
jw << "NextFileNumber" << next_file_number_;
}
if (has_max_column_family_) {
jw << "MaxColumnFamily" << max_column_family_;
}
if (has_min_log_number_to_keep_) {
jw << "MinLogNumberToKeep" << min_log_number_to_keep_;
}
if (has_last_sequence_) {
jw << "LastSeq" << last_sequence_;
}
if (!deleted_files_.empty()) {
jw << "DeletedFiles";
jw.StartArray();
for (const auto& deleted_file : deleted_files_) {
jw.StartArrayedObject();
jw << "Level" << deleted_file.first;
jw << "FileNumber" << deleted_file.second;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!new_files_.empty()) {
jw << "AddedFiles";
jw.StartArray();
for (size_t i = 0; i < new_files_.size(); i++) {
jw.StartArrayedObject();
jw << "Level" << new_files_[i].first;
const FileMetaData& f = new_files_[i].second;
jw << "FileNumber" << f.fd.GetNumber();
jw << "FileSize" << f.fd.GetFileSize();
jw << "SmallestIKey" << f.smallest.DebugString(hex_key);
jw << "LargestIKey" << f.largest.DebugString(hex_key);
jw << "OldestAncesterTime" << f.oldest_ancester_time;
jw << "FileCreationTime" << f.file_creation_time;
jw << "EpochNumber" << f.epoch_number;
jw << "FileChecksum" << Slice(f.file_checksum).ToString(true);
jw << "FileChecksumFuncName" << f.file_checksum_func_name;
if (f.temperature != Temperature::kUnknown) {
jw << "temperature" << std::to_string(static_cast<int>(f.temperature));
}
if (f.oldest_blob_file_number != kInvalidBlobFileNumber) {
jw << "OldestBlobFile" << f.oldest_blob_file_number;
}
if (f.temperature != Temperature::kUnknown) {
// Maybe change to human readable format whenthe feature becomes
// permanent
jw << "Temperature" << static_cast<int>(f.temperature);
}
jw << "TailSize" << f.tail_size;
jw << "UserDefinedTimestampsPersisted"
<< f.user_defined_timestamps_persisted;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!blob_file_additions_.empty()) {
jw << "BlobFileAdditions";
jw.StartArray();
for (const auto& blob_file_addition : blob_file_additions_) {
jw.StartArrayedObject();
jw << blob_file_addition;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!blob_file_garbages_.empty()) {
jw << "BlobFileGarbages";
jw.StartArray();
for (const auto& blob_file_garbage : blob_file_garbages_) {
jw.StartArrayedObject();
jw << blob_file_garbage;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!wal_additions_.empty()) {
jw << "WalAdditions";
jw.StartArray();
for (const auto& wal_addition : wal_additions_) {
jw.StartArrayedObject();
jw << wal_addition;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!wal_deletion_.IsEmpty()) {
jw << "WalDeletion";
jw.StartObject();
jw << wal_deletion_;
jw.EndObject();
}
jw << "ColumnFamily" << column_family_;
if (is_column_family_add_) {
jw << "ColumnFamilyAdd" << column_family_name_;
}
if (is_column_family_drop_) {
jw << "ColumnFamilyDrop" << column_family_name_;
}
if (is_in_atomic_group_) {
jw << "AtomicGroup" << remaining_entries_;
}
if (HasFullHistoryTsLow()) {
jw << "FullHistoryTsLow" << Slice(full_history_ts_low_).ToString(hex_key);
}
jw.EndObject();
return jw.Get();
}
} // namespace ROCKSDB_NAMESPACE
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