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rocksdb/db/version_edit.cc
slk 937fbcbddc Track per-SST user-defined timestamp information in MANIFEST (#9092) 
Summary:
Track per-SST user-defined timestamp information in MANIFEST https://github.com/facebook/rocksdb/issues/8957

Rockdb has supported user-defined timestamp feature. Application can specify a timestamp
when writing each k-v pair. When data flush from memory to disk file called SST files, file
creation activity will commit to MANIFEST. This commit is for tracking timestamp info in the
MANIFEST for each file. The changes involved are as follows:
1) Track max/min timestamp in FileMetaData, and fix invoved codes.
2) Add NewFileCustomTag::kMinTimestamp and NewFileCustomTag::kMinTimestamp in
    NewFileCustomTag ( in the kNewFile4 part ), and support invoved codes such as
    VersionEdit Encode and Decode etc.
3) Add unit test code for VersionEdit EncodeDecodeNewFile4, and fix invoved test codes.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9092

Reviewed By: ajkr, akankshamahajan15

Differential Revision: D32252323

Pulled By: riversand963

fbshipit-source-id: d2642898d6e3ad1fef0eb866b98045408bd4e162
2021-11-10 10:49:04 -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 "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));
}
void FileMetaData::UpdateBoundaries(const Slice& key, const Slice& value,
SequenceNumber seqno,
ValueType value_type) {
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);
if (value_type == kTypeBlobIndex) {
BlobIndex blob_index;
const Status s = blob_index.DecodeFrom(value);
if (!s.ok()) {
return;
}
if (blob_index.IsInlined()) {
return;
}
if (blob_index.HasTTL()) {
return;
}
// Paranoid check: this should not happen because BlobDB numbers the blob
// files starting from 1.
if (blob_index.file_number() == kInvalidBlobFileNumber) {
return;
}
if (oldest_blob_file_number == kInvalidBlobFileNumber ||
oldest_blob_file_number > blob_index.file_number()) {
oldest_blob_file_number = blob_index.file_number();
}
}
}
void VersionEdit::Clear() {
max_level_ = 0;
db_id_.clear();
comparator_.clear();
log_number_ = 0;
prev_log_number_ = 0;
next_file_number_ = 0;
max_column_family_ = 0;
min_log_number_to_keep_ = 0;
last_sequence_ = 0;
has_db_id_ = false;
has_comparator_ = false;
has_log_number_ = false;
has_prev_log_number_ = false;
has_next_file_number_ = false;
has_max_column_family_ = false;
has_min_log_number_to_keep_ = false;
has_last_sequence_ = false;
deleted_files_.clear();
new_files_.clear();
blob_file_additions_.clear();
blob_file_garbages_.clear();
wal_additions_.clear();
wal_deletion_.Reset();
column_family_ = 0;
is_column_family_add_ = false;
is_column_family_drop_ = false;
column_family_name_.clear();
is_in_atomic_group_ = false;
remaining_entries_ = 0;
full_history_ts_low_.clear();
}
bool VersionEdit::EncodeTo(std::string* dst) const {
if (has_db_id_) {
PutVarint32(dst, kDbId);
PutLengthPrefixedSlice(dst, db_id_);
}
if (has_comparator_) {
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_last_sequence_) {
PutVarint32Varint64(dst, kLastSequence, last_sequence_);
}
for (const auto& deleted : deleted_files_) {
PutVarint32Varint32Varint64(dst, kDeletedFile, deleted.first /* level */,
deleted.second /* file number */);
}
bool min_log_num_written = false;
for (size_t i = 0; i < new_files_.size(); i++) {
const FileMetaData& f = new_files_[i].second;
if (!f.smallest.Valid() || !f.largest.Valid()) {
return false;
}
PutVarint32(dst, kNewFile4);
PutVarint32Varint64(dst, new_files_[i].first /* level */, f.fd.GetNumber());
PutVarint64(dst, f.fd.GetFileSize());
PutLengthPrefixedSlice(dst, f.smallest.Encode());
PutLengthPrefixedSlice(dst, f.largest.Encode());
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::kFileChecksum);
PutLengthPrefixedSlice(dst, Slice(f.file_checksum));
PutVarint32(dst, NewFileCustomTag::kFileChecksumFuncName);
PutLengthPrefixedSlice(dst, Slice(f.file_checksum_func_name));
if (f.max_timestamp != kDisableUserTimestamp) {
if (f.min_timestamp.size() != f.max_timestamp.size()) {
assert(false);
return false;
}
PutVarint32(dst, NewFileCustomTag::kMinTimestamp);
PutLengthPrefixedSlice(dst, Slice(f.min_timestamp));
PutVarint32(dst, NewFileCustomTag::kMaxTimestamp);
PutLengthPrefixedSlice(dst, Slice(f.max_timestamp));
}
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));
}
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_);
}
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) {
if (f.min_timestamp.size() != f.max_timestamp.size()) {
assert(false);
return "new-file4 custom field timestamp size mismatch error";
}
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 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 kMinTimestamp:
f.min_timestamp = field.ToString();
break;
case kMaxTimestamp:
f.max_timestamp = field.ToString();
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;
}
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 kCompactPointer:
if (GetLevel(&input, &level, &msg) &&
GetInternalKey(&input, &key)) {
// we don't use compact pointers anymore,
// but we should not fail if they are still
// in manifest
} else {
if (!msg) {
msg = "compaction pointer";
}
}
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;
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_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& 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(" min_timestamp:");
r.append(Slice(f.min_timestamp).ToString(true));
r.append(" max_timestamp:");
r.append(Slice(f.max_timestamp).ToString(true));
r.append(" oldest_ancester_time:");
AppendNumberTo(&r, f.oldest_ancester_time);
r.append(" file_creation_time:");
AppendNumberTo(&r, f.file_creation_time);
r.append(" file_checksum:");
r.append(f.file_checksum);
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(ToString(static_cast<int>(f.temperature)));
}
}
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);
if (f.min_timestamp != kDisableUserTimestamp) {
assert(f.max_timestamp != kDisableUserTimestamp);
jw << "MinTimestamp" << Slice(f.min_timestamp).ToString(true);
jw << "MaxTimestamp" << Slice(f.max_timestamp).ToString(true);
}
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.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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