// 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() { 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; compact_cursors_.clear(); 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_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; 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.fd.GetPathId() != 0) { PutVarint32(dst, NewFileCustomTag::kPathId); char p = static_cast(f.fd.GetPathId()); PutLengthPrefixedSlice(dst, Slice(&p, 1)); } if (f.temperature != Temperature::kUnknown) { PutVarint32(dst, NewFileCustomTag::kTemperature); char p = static_cast(f.temperature); PutLengthPrefixedSlice(dst, Slice(&p, 1)); } if (f.marked_for_compaction) { PutVarint32(dst, NewFileCustomTag::kNeedCompaction); char p = static_cast(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)); } 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) { 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(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; 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 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; 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(field_len) > input.size()) { if (!msg) { msg = "safely ignoreable tag length error"; } } else { input.remove_prefix(static_cast(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& 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(" 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(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))); } } 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 << "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(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(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