1 files changed, 727 insertions, 0 deletions
diff --git a/src/rocksdb/options/options_parser.cc b/src/rocksdb/options/options_parser.cc
new file mode 100644
index 000000000..562a7b214
--- /dev/null
+++ b/src/rocksdb/options/options_parser.cc
@@ -0,0 +1,727 @@
+// Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+
+#ifndef ROCKSDB_LITE
+
+#include "options/options_parser.h"
+
+#include <cmath>
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "file/line_file_reader.h"
+#include "file/writable_file_writer.h"
+#include "options/cf_options.h"
+#include "options/db_options.h"
+#include "options/options_helper.h"
+#include "port/port.h"
+#include "rocksdb/convenience.h"
+#include "rocksdb/db.h"
+#include "rocksdb/utilities/options_type.h"
+#include "test_util/sync_point.h"
+#include "util/cast_util.h"
+#include "util/string_util.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+static const std::string option_file_header =
+    "# This is a RocksDB option file.\n"
+    "#\n"
+    "# For detailed file format spec, please refer to the example file\n"
+    "# in examples/rocksdb_option_file_example.ini\n"
+    "#\n"
+    "\n";
+
+Status PersistRocksDBOptions(const DBOptions& db_opt,
+                             const std::vector<std::string>& cf_names,
+                             const std::vector<ColumnFamilyOptions>& cf_opts,
+                             const std::string& file_name, FileSystem* fs) {
+  ConfigOptions
+      config_options;  // Use default for escaped(true) and check (exact)
+  config_options.delimiter = "\n  ";
+  // Do not invoke PrepareOptions when we are doing validation.
+  config_options.invoke_prepare_options = false;
+  // If a readahead size was set in the input options, use it
+  if (db_opt.log_readahead_size > 0) {
+    config_options.file_readahead_size = db_opt.log_readahead_size;
+  }
+  return PersistRocksDBOptions(config_options, db_opt, cf_names, cf_opts,
+                               file_name, fs);
+}
+
+Status PersistRocksDBOptions(const ConfigOptions& config_options_in,
+                             const DBOptions& db_opt,
+                             const std::vector<std::string>& cf_names,
+                             const std::vector<ColumnFamilyOptions>& cf_opts,
+                             const std::string& file_name, FileSystem* fs) {
+  ConfigOptions config_options = config_options_in;
+  config_options.delimiter = "\n  ";  // Override the default to nl
+
+  TEST_SYNC_POINT("PersistRocksDBOptions:start");
+  if (cf_names.size() != cf_opts.size()) {
+    return Status::InvalidArgument(
+        "cf_names.size() and cf_opts.size() must be the same");
+  }
+  std::unique_ptr<FSWritableFile> wf;
+
+  Status s =
+      fs->NewWritableFile(file_name, FileOptions(), &wf, nullptr);
+  if (!s.ok()) {
+    return s;
+  }
+  std::unique_ptr<WritableFileWriter> writable;
+  writable.reset(new WritableFileWriter(std::move(wf), file_name, EnvOptions(),
+                                        nullptr /* statistics */));
+
+  std::string options_file_content;
+
+  s = writable->Append(
+      option_file_header + "[" + opt_section_titles[kOptionSectionVersion] +
+      "]\n"
+      "  rocksdb_version=" +
+      std::to_string(ROCKSDB_MAJOR) + "." + std::to_string(ROCKSDB_MINOR) +
+      "." + std::to_string(ROCKSDB_PATCH) + "\n");
+  if (s.ok()) {
+    s = writable->Append(
+        "  options_file_version=" + std::to_string(ROCKSDB_OPTION_FILE_MAJOR) +
+        "." + std::to_string(ROCKSDB_OPTION_FILE_MINOR) + "\n");
+  }
+  if (s.ok()) {
+    s = writable->Append("\n[" + opt_section_titles[kOptionSectionDBOptions] +
+                         "]\n  ");
+  }
+
+  if (s.ok()) {
+    s = GetStringFromDBOptions(config_options, db_opt, &options_file_content);
+  }
+  if (s.ok()) {
+    s = writable->Append(options_file_content + "\n");
+  }
+
+  for (size_t i = 0; s.ok() && i < cf_opts.size(); ++i) {
+    // CFOptions section
+    s = writable->Append("\n[" + opt_section_titles[kOptionSectionCFOptions] +
+                         " \"" + EscapeOptionString(cf_names[i]) + "\"]\n  ");
+    if (s.ok()) {
+      s = GetStringFromColumnFamilyOptions(config_options, cf_opts[i],
+                                           &options_file_content);
+    }
+    if (s.ok()) {
+      s = writable->Append(options_file_content + "\n");
+    }
+    // TableOptions section
+    auto* tf = cf_opts[i].table_factory.get();
+    if (tf != nullptr) {
+      if (s.ok()) {
+        s = writable->Append(
+            "[" + opt_section_titles[kOptionSectionTableOptions] + tf->Name() +
+            " \"" + EscapeOptionString(cf_names[i]) + "\"]\n  ");
+      }
+      if (s.ok()) {
+        options_file_content.clear();
+        s = tf->GetOptionString(config_options, &options_file_content);
+      }
+      if (s.ok()) {
+        s = writable->Append(options_file_content + "\n");
+      }
+    }
+  }
+  if (s.ok()) {
+    s = writable->Sync(true /* use_fsync */);
+  }
+  if (s.ok()) {
+    s = writable->Close();
+  }
+  if (s.ok()) {
+    return RocksDBOptionsParser::VerifyRocksDBOptionsFromFile(
+        config_options, db_opt, cf_names, cf_opts, file_name, fs);
+  }
+  return s;
+}
+
+RocksDBOptionsParser::RocksDBOptionsParser() { Reset(); }
+
+void RocksDBOptionsParser::Reset() {
+  db_opt_ = DBOptions();
+  db_opt_map_.clear();
+  cf_names_.clear();
+  cf_opts_.clear();
+  cf_opt_maps_.clear();
+  has_version_section_ = false;
+  has_db_options_ = false;
+  has_default_cf_options_ = false;
+  for (int i = 0; i < 3; ++i) {
+    db_version[i] = 0;
+    opt_file_version[i] = 0;
+  }
+}
+
+bool RocksDBOptionsParser::IsSection(const std::string& line) {
+  if (line.size() < 2) {
+    return false;
+  }
+  if (line[0] != '[' || line[line.size() - 1] != ']') {
+    return false;
+  }
+  return true;
+}
+
+Status RocksDBOptionsParser::ParseSection(OptionSection* section,
+                                          std::string* title,
+                                          std::string* argument,
+                                          const std::string& line,
+                                          const int line_num) {
+  *section = kOptionSectionUnknown;
+  // A section is of the form [<SectionName> "<SectionArg>"], where
+  // "<SectionArg>" is optional.
+  size_t arg_start_pos = line.find("\"");
+  size_t arg_end_pos = line.rfind("\"");
+  // The following if-then check tries to identify whether the input
+  // section has the optional section argument.
+  if (arg_start_pos != std::string::npos && arg_start_pos != arg_end_pos) {
+    *title = TrimAndRemoveComment(line.substr(1, arg_start_pos - 1), true);
+    *argument = UnescapeOptionString(
+        line.substr(arg_start_pos + 1, arg_end_pos - arg_start_pos - 1));
+  } else {
+    *title = TrimAndRemoveComment(line.substr(1, line.size() - 2), true);
+    *argument = "";
+  }
+  for (int i = 0; i < kOptionSectionUnknown; ++i) {
+    if (title->find(opt_section_titles[i]) == 0) {
+      if (i == kOptionSectionVersion || i == kOptionSectionDBOptions ||
+          i == kOptionSectionCFOptions) {
+        if (title->size() == opt_section_titles[i].size()) {
+          // if true, then it indicats equal
+          *section = static_cast<OptionSection>(i);
+          return CheckSection(*section, *argument, line_num);
+        }
+      } else if (i == kOptionSectionTableOptions) {
+        // This type of sections has a sufffix at the end of the
+        // section title
+        if (title->size() > opt_section_titles[i].size()) {
+          *section = static_cast<OptionSection>(i);
+          return CheckSection(*section, *argument, line_num);
+        }
+      }
+    }
+  }
+  return Status::InvalidArgument(std::string("Unknown section ") + line);
+}
+
+Status RocksDBOptionsParser::InvalidArgument(const int line_num,
+                                             const std::string& message) {
+  return Status::InvalidArgument(
+      "[RocksDBOptionsParser Error] ",
+      message + " (at line " + std::to_string(line_num) + ")");
+}
+
+Status RocksDBOptionsParser::ParseStatement(std::string* name,
+                                            std::string* value,
+                                            const std::string& line,
+                                            const int line_num) {
+  size_t eq_pos = line.find("=");
+  if (eq_pos == std::string::npos) {
+    return InvalidArgument(line_num, "A valid statement must have a '='.");
+  }
+
+  *name = TrimAndRemoveComment(line.substr(0, eq_pos), true);
+  *value =
+      TrimAndRemoveComment(line.substr(eq_pos + 1, line.size() - eq_pos - 1));
+  if (name->empty()) {
+    return InvalidArgument(line_num,
+                           "A valid statement must have a variable name.");
+  }
+  return Status::OK();
+}
+
+Status RocksDBOptionsParser::Parse(const std::string& file_name, FileSystem* fs,
+                                   bool ignore_unknown_options,
+                                   size_t file_readahead_size) {
+  ConfigOptions
+      config_options;  // Use default for escaped(true) and check (exact)
+  config_options.ignore_unknown_options = ignore_unknown_options;
+  if (file_readahead_size > 0) {
+    config_options.file_readahead_size = file_readahead_size;
+  }
+  return Parse(config_options, file_name, fs);
+}
+
+Status RocksDBOptionsParser::Parse(const ConfigOptions& config_options_in,
+                                   const std::string& file_name,
+                                   FileSystem* fs) {
+  Reset();
+  ConfigOptions config_options = config_options_in;
+
+  std::unique_ptr<FSSequentialFile> seq_file;
+  Status s = fs->NewSequentialFile(file_name, FileOptions(), &seq_file,
+                                   nullptr);
+  if (!s.ok()) {
+    return s;
+  }
+  LineFileReader lf_reader(std::move(seq_file), file_name,
+                           config_options.file_readahead_size);
+
+  OptionSection section = kOptionSectionUnknown;
+  std::string title;
+  std::string argument;
+  std::unordered_map<std::string, std::string> opt_map;
+  std::string line;
+  // we only support single-lined statement.
+  while (lf_reader.ReadLine(&line, Env::IO_TOTAL /* rate_limiter_priority */)) {
+    int line_num = static_cast<int>(lf_reader.GetLineNumber());
+    line = TrimAndRemoveComment(line);
+    if (line.empty()) {
+      continue;
+    }
+    if (IsSection(line)) {
+      s = EndSection(config_options, section, title, argument, opt_map);
+      opt_map.clear();
+      if (!s.ok()) {
+        return s;
+      }
+
+      // If the option file is not generated by a higher minor version,
+      // there shouldn't be any unknown option.
+      if (config_options.ignore_unknown_options &&
+          section == kOptionSectionVersion) {
+        if (db_version[0] < ROCKSDB_MAJOR || (db_version[0] == ROCKSDB_MAJOR &&
+                                              db_version[1] <= ROCKSDB_MINOR)) {
+          config_options.ignore_unknown_options = false;
+        }
+      }
+
+      s = ParseSection(&section, &title, &argument, line, line_num);
+      if (!s.ok()) {
+        return s;
+      }
+    } else {
+      std::string name;
+      std::string value;
+      s = ParseStatement(&name, &value, line, line_num);
+      if (!s.ok()) {
+        return s;
+      }
+      opt_map.insert({name, value});
+    }
+  }
+  s = lf_reader.GetStatus();
+  if (!s.ok()) {
+    return s;
+  }
+
+  s = EndSection(config_options, section, title, argument, opt_map);
+  opt_map.clear();
+  if (!s.ok()) {
+    return s;
+  }
+  return ValidityCheck();
+}
+
+Status RocksDBOptionsParser::CheckSection(const OptionSection section,
+                                          const std::string& section_arg,
+                                          const int line_num) {
+  if (section == kOptionSectionDBOptions) {
+    if (has_db_options_) {
+      return InvalidArgument(
+          line_num,
+          "More than one DBOption section found in the option config file");
+    }
+    has_db_options_ = true;
+  } else if (section == kOptionSectionCFOptions) {
+    bool is_default_cf = (section_arg == kDefaultColumnFamilyName);
+    if (cf_opts_.size() == 0 && !is_default_cf) {
+      return InvalidArgument(
+          line_num,
+          "Default column family must be the first CFOptions section "
+          "in the option config file");
+    } else if (cf_opts_.size() != 0 && is_default_cf) {
+      return InvalidArgument(
+          line_num,
+          "Default column family must be the first CFOptions section "
+          "in the optio/n config file");
+    } else if (GetCFOptions(section_arg) != nullptr) {
+      return InvalidArgument(
+          line_num,
+          "Two identical column families found in option config file");
+    }
+    has_default_cf_options_ |= is_default_cf;
+  } else if (section == kOptionSectionTableOptions) {
+    if (GetCFOptions(section_arg) == nullptr) {
+      return InvalidArgument(
+          line_num, std::string(
+                        "Does not find a matched column family name in "
+                        "TableOptions section.  Column Family Name:") +
+                        section_arg);
+    }
+  } else if (section == kOptionSectionVersion) {
+    if (has_version_section_) {
+      return InvalidArgument(
+          line_num,
+          "More than one Version section found in the option config file.");
+    }
+    has_version_section_ = true;
+  }
+  return Status::OK();
+}
+
+Status RocksDBOptionsParser::ParseVersionNumber(const std::string& ver_name,
+                                                const std::string& ver_string,
+                                                const int max_count,
+                                                int* version) {
+  int version_index = 0;
+  int current_number = 0;
+  int current_digit_count = 0;
+  bool has_dot = false;
+  for (int i = 0; i < max_count; ++i) {
+    version[i] = 0;
+  }
+  constexpr int kBufferSize = 200;
+  char buffer[kBufferSize];
+  for (size_t i = 0; i < ver_string.size(); ++i) {
+    if (ver_string[i] == '.') {
+      if (version_index >= max_count - 1) {
+        snprintf(buffer, sizeof(buffer) - 1,
+                 "A valid %s can only contains at most %d dots.",
+                 ver_name.c_str(), max_count - 1);
+        return Status::InvalidArgument(buffer);
+      }
+      if (current_digit_count == 0) {
+        snprintf(buffer, sizeof(buffer) - 1,
+                 "A valid %s must have at least one digit before each dot.",
+                 ver_name.c_str());
+        return Status::InvalidArgument(buffer);
+      }
+      version[version_index++] = current_number;
+      current_number = 0;
+      current_digit_count = 0;
+      has_dot = true;
+    } else if (isdigit(ver_string[i])) {
+      current_number = current_number * 10 + (ver_string[i] - '0');
+      current_digit_count++;
+    } else {
+      snprintf(buffer, sizeof(buffer) - 1,
+               "A valid %s can only contains dots and numbers.",
+               ver_name.c_str());
+      return Status::InvalidArgument(buffer);
+    }
+  }
+  version[version_index] = current_number;
+  if (has_dot && current_digit_count == 0) {
+    snprintf(buffer, sizeof(buffer) - 1,
+             "A valid %s must have at least one digit after each dot.",
+             ver_name.c_str());
+    return Status::InvalidArgument(buffer);
+  }
+  return Status::OK();
+}
+
+Status RocksDBOptionsParser::EndSection(
+    const ConfigOptions& config_options, const OptionSection section,
+    const std::string& section_title, const std::string& section_arg,
+    const std::unordered_map<std::string, std::string>& opt_map) {
+  Status s;
+  if (section == kOptionSectionDBOptions) {
+    s = GetDBOptionsFromMap(config_options, DBOptions(), opt_map, &db_opt_);
+    if (!s.ok()) {
+      return s;
+    }
+    db_opt_map_ = opt_map;
+  } else if (section == kOptionSectionCFOptions) {
+    // This condition should be ensured earlier in ParseSection
+    // so we make an assertion here.
+    assert(GetCFOptions(section_arg) == nullptr);
+    cf_names_.emplace_back(section_arg);
+    cf_opts_.emplace_back();
+    s = GetColumnFamilyOptionsFromMap(config_options, ColumnFamilyOptions(),
+                                      opt_map, &cf_opts_.back());
+    if (!s.ok()) {
+      return s;
+    }
+    // keep the parsed string.
+    cf_opt_maps_.emplace_back(opt_map);
+  } else if (section == kOptionSectionTableOptions) {
+    assert(GetCFOptions(section_arg) != nullptr);
+    auto* cf_opt = GetCFOptionsImpl(section_arg);
+    if (cf_opt == nullptr) {
+      return Status::InvalidArgument(
+          "The specified column family must be defined before the "
+          "TableOptions section:",
+          section_arg);
+    }
+    // Ignore error as table factory deserialization is optional
+    cf_opt->table_factory.reset();
+    s = TableFactory::CreateFromString(
+        config_options,
+        section_title.substr(
+            opt_section_titles[kOptionSectionTableOptions].size()),
+        &(cf_opt->table_factory));
+    if (s.ok() && cf_opt->table_factory != nullptr) {
+      s = cf_opt->table_factory->ConfigureFromMap(config_options, opt_map);
+      // Translate any errors (NotFound, NotSupported, to InvalidArgument
+      if (s.ok() || s.IsInvalidArgument()) {
+        return s;
+      } else {
+        return Status::InvalidArgument(s.getState());
+      }
+    } else {
+      // Return OK for not supported table factories as TableFactory
+      // Deserialization is optional.
+      cf_opt->table_factory.reset();
+      return Status::OK();
+    }
+  } else if (section == kOptionSectionVersion) {
+    for (const auto& pair : opt_map) {
+      if (pair.first == "rocksdb_version") {
+        s = ParseVersionNumber(pair.first, pair.second, 3, db_version);
+        if (!s.ok()) {
+          return s;
+        }
+      } else if (pair.first == "options_file_version") {
+        s = ParseVersionNumber(pair.first, pair.second, 2, opt_file_version);
+        if (!s.ok()) {
+          return s;
+        }
+        if (opt_file_version[0] < 1) {
+          return Status::InvalidArgument(
+              "A valid options_file_version must be at least 1.");
+        }
+      }
+    }
+  }
+  return s;
+}
+
+Status RocksDBOptionsParser::ValidityCheck() {
+  if (!has_db_options_) {
+    return Status::Corruption(
+        "A RocksDB Option file must have a single DBOptions section");
+  }
+  if (!has_default_cf_options_) {
+    return Status::Corruption(
+        "A RocksDB Option file must have a single CFOptions:default section");
+  }
+
+  return Status::OK();
+}
+
+std::string RocksDBOptionsParser::TrimAndRemoveComment(const std::string& line,
+                                                       bool trim_only) {
+  size_t start = 0;
+  size_t end = line.size();
+
+  // we only support "#" style comment
+  if (!trim_only) {
+    size_t search_pos = 0;
+    while (search_pos < line.size()) {
+      size_t comment_pos = line.find('#', search_pos);
+      if (comment_pos == std::string::npos) {
+        break;
+      }
+      if (comment_pos == 0 || line[comment_pos - 1] != '\\') {
+        end = comment_pos;
+        break;
+      }
+      search_pos = comment_pos + 1;
+    }
+  }
+
+  while (start < end && isspace(line[start]) != 0) {
+    ++start;
+  }
+
+  // start < end implies end > 0.
+  while (start < end && isspace(line[end - 1]) != 0) {
+    --end;
+  }
+
+  if (start < end) {
+    return line.substr(start, end - start);
+  }
+
+  return "";
+}
+
+Status RocksDBOptionsParser::VerifyRocksDBOptionsFromFile(
+    const ConfigOptions& config_options_in, const DBOptions& db_opt,
+    const std::vector<std::string>& cf_names,
+    const std::vector<ColumnFamilyOptions>& cf_opts,
+    const std::string& file_name, FileSystem* fs) {
+  RocksDBOptionsParser parser;
+  ConfigOptions config_options = config_options_in;
+  config_options.invoke_prepare_options =
+      false;  // No need to do a prepare for verify
+  if (config_options.sanity_level < ConfigOptions::kSanityLevelExactMatch) {
+    // If we are not doing an exact comparison, we should ignore
+    // unsupported options, as they may cause the Parse to fail
+    // (if the ObjectRegistry is not initialized)
+    config_options.ignore_unsupported_options = true;
+  }
+  Status s = parser.Parse(config_options, file_name, fs);
+  if (!s.ok()) {
+    return s;
+  }
+
+  // Verify DBOptions
+  s = VerifyDBOptions(config_options, db_opt, *parser.db_opt(),
+                      parser.db_opt_map());
+  if (!s.ok()) {
+    return s;
+  }
+
+  // Verify ColumnFamily Name
+  if (cf_names.size() != parser.cf_names()->size()) {
+    if (config_options.sanity_level >=
+        ConfigOptions::kSanityLevelLooselyCompatible) {
+      return Status::InvalidArgument(
+          "[RocksDBOptionParser Error] The persisted options does not have "
+          "the same number of column family names as the db instance.");
+    } else if (cf_opts.size() > parser.cf_opts()->size()) {
+      return Status::InvalidArgument(
+          "[RocksDBOptionsParser Error]",
+          "The persisted options file has less number of column family "
+          "names than that of the specified one.");
+    }
+  }
+  for (size_t i = 0; i < cf_names.size(); ++i) {
+    if (cf_names[i] != parser.cf_names()->at(i)) {
+      return Status::InvalidArgument(
+          "[RocksDBOptionParser Error] The persisted options and the db"
+          "instance does not have the same name for column family ",
+          std::to_string(i));
+    }
+  }
+
+  // Verify Column Family Options
+  if (cf_opts.size() != parser.cf_opts()->size()) {
+    if (config_options.sanity_level >=
+        ConfigOptions::kSanityLevelLooselyCompatible) {
+      return Status::InvalidArgument(
+          "[RocksDBOptionsParser Error]",
+          "The persisted options does not have the same number of "
+          "column families as the db instance.");
+    } else if (cf_opts.size() > parser.cf_opts()->size()) {
+      return Status::InvalidArgument(
+          "[RocksDBOptionsParser Error]",
+          "The persisted options file has less number of column families "
+          "than that of the specified number.");
+    }
+  }
+  for (size_t i = 0; i < cf_opts.size(); ++i) {
+    s = VerifyCFOptions(config_options, cf_opts[i], parser.cf_opts()->at(i),
+                        &(parser.cf_opt_maps()->at(i)));
+    if (!s.ok()) {
+      return s;
+    }
+    s = VerifyTableFactory(config_options, cf_opts[i].table_factory.get(),
+                           parser.cf_opts()->at(i).table_factory.get());
+    if (!s.ok()) {
+      return s;
+    }
+  }
+
+  return Status::OK();
+}
+
+Status RocksDBOptionsParser::VerifyDBOptions(
+    const ConfigOptions& config_options, const DBOptions& base_opt,
+    const DBOptions& file_opt,
+    const std::unordered_map<std::string, std::string>* opt_map) {
+  auto base_config = DBOptionsAsConfigurable(base_opt, opt_map);
+  auto file_config = DBOptionsAsConfigurable(file_opt, opt_map);
+  std::string mismatch;
+  if (!base_config->AreEquivalent(config_options, file_config.get(),
+                                  &mismatch)) {
+    const size_t kBufferSize = 2048;
+    char buffer[kBufferSize];
+    std::string base_value;
+    std::string file_value;
+    int offset = snprintf(buffer, sizeof(buffer),
+                          "[RocksDBOptionsParser]: "
+                          "failed the verification on DBOptions::%s -- ",
+                          mismatch.c_str());
+    Status s = base_config->GetOption(config_options, mismatch, &base_value);
+    if (s.ok()) {
+      s = file_config->GetOption(config_options, mismatch, &file_value);
+    }
+    assert(offset >= 0);
+    assert(static_cast<size_t>(offset) < sizeof(buffer));
+    if (s.ok()) {
+      snprintf(buffer + offset, sizeof(buffer) - static_cast<size_t>(offset),
+               "-- The specified one is %s while the persisted one is %s.\n",
+               base_value.c_str(), file_value.c_str());
+    } else {
+      snprintf(buffer + offset, sizeof(buffer) - static_cast<size_t>(offset),
+               "-- Unable to re-serialize an option: %s.\n",
+               s.ToString().c_str());
+    }
+    return Status::InvalidArgument(Slice(buffer, strlen(buffer)));
+  }
+  return Status::OK();
+}
+
+Status RocksDBOptionsParser::VerifyCFOptions(
+    const ConfigOptions& config_options, const ColumnFamilyOptions& base_opt,
+    const ColumnFamilyOptions& file_opt,
+    const std::unordered_map<std::string, std::string>* opt_map) {
+  auto base_config = CFOptionsAsConfigurable(base_opt, opt_map);
+  auto file_config = CFOptionsAsConfigurable(file_opt, opt_map);
+  std::string mismatch;
+  if (!base_config->AreEquivalent(config_options, file_config.get(),
+                                  &mismatch)) {
+    std::string base_value;
+    std::string file_value;
+    // The options do not match
+    const size_t kBufferSize = 2048;
+    char buffer[kBufferSize];
+    Status s = base_config->GetOption(config_options, mismatch, &base_value);
+    if (s.ok()) {
+      s = file_config->GetOption(config_options, mismatch, &file_value);
+    }
+    int offset = snprintf(buffer, sizeof(buffer),
+                          "[RocksDBOptionsParser]: "
+                          "failed the verification on ColumnFamilyOptions::%s",
+                          mismatch.c_str());
+    assert(offset >= 0);
+    assert(static_cast<size_t>(offset) < sizeof(buffer));
+    if (s.ok()) {
+      snprintf(buffer + offset, sizeof(buffer) - static_cast<size_t>(offset),
+               "--- The specified one is %s while the persisted one is %s.\n",
+               base_value.c_str(), file_value.c_str());
+    } else {
+      snprintf(buffer + offset, sizeof(buffer) - static_cast<size_t>(offset),
+               "--- Unable to re-serialize an option: %s.\n",
+               s.ToString().c_str());
+    }
+    return Status::InvalidArgument(Slice(buffer, sizeof(buffer)));
+  }  // For each option
+  return Status::OK();
+}
+
+Status RocksDBOptionsParser::VerifyTableFactory(
+    const ConfigOptions& config_options, const TableFactory* base_tf,
+    const TableFactory* file_tf) {
+  std::string mismatch;
+  if (base_tf && file_tf) {
+    if (config_options.sanity_level > ConfigOptions::kSanityLevelNone &&
+        std::string(base_tf->Name()) != std::string(file_tf->Name())) {
+      return Status::Corruption(
+          "[RocksDBOptionsParser]: "
+          "failed the verification on TableFactory->Name()");
+    } else if (!base_tf->AreEquivalent(config_options, file_tf, &mismatch)) {
+      return Status::Corruption(std::string("[RocksDBOptionsParser]:"
+                                            "failed the verification on ") +
+                                    base_tf->Name() + "::",
+                                mismatch);
+    }
+  } else {
+    // TODO(yhchiang): further support sanity check here
+  }
+  return Status::OK();
+}
+}  // namespace ROCKSDB_NAMESPACE
+
+#endif  // !ROCKSDB_LITE