explicit DatabaseImpl()

in glean/rocksdb/rocksdb.cpp [438:470]

• 29 lines of code
• 3 McCabe index (conditional complexity)

  explicit DatabaseImpl(ContainerImpl c, Id start, int64_t version)
      : container_(std::move(c)) {
    starting_id = Id::fromWord(getAdminValue(
      AdminId::STARTING_ID,
      start.toWord(),
      container_.mode == Mode::Create,
      []{}));

    next_id = Id::fromWord(getAdminValue(
      AdminId::NEXT_ID,
      start.toWord(),
      container_.mode == Mode::Create,
      [mode = container_.mode] {
        if (mode != Mode::Create) {
          rts::error("corrupt database - missing NEXT_ID");
        }
      }));

    db_version = getAdminValue(
      AdminId::VERSION,
      version,
      container_.mode == Mode::Create,
      []{});

    if (db_version != version) {
      rts::error("unexpected database version {}", db_version);
    }

    stats_.set(loadStats());
    ownership_unit_counters = loadOwnershipUnitCounters();
    ownership_derived_counters = loadOwnershipDerivedCounters();
    usets_ = loadOwnershipSets();
  }