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version_edit.cc
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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) {