void ScanTable()

in db/repair.cc [258:319]
57 lines of code
10 McCabe index (conditional complexity)

  void ScanTable(uint64_t number) {
    TableInfo t;
    t.meta.number = number;
    std::string fname = TableFileName(dbname_, number);
    Status status = env_->GetFileSize(fname, &t.meta.file_size);
    if (!status.ok()) {
      // Try alternate file name.
      fname = SSTTableFileName(dbname_, number);
      Status s2 = env_->GetFileSize(fname, &t.meta.file_size);
      if (s2.ok()) {
        status = Status::OK();
      }
    }
    if (!status.ok()) {
      ArchiveFile(TableFileName(dbname_, number));
      ArchiveFile(SSTTableFileName(dbname_, number));
      Log(options_.info_log, "Table #%llu: dropped: %s",
          (unsigned long long) t.meta.number,
          status.ToString().c_str());
      return;
    }

    // Extract metadata by scanning through table.
    int counter = 0;
    Iterator* iter = NewTableIterator(t.meta);
    bool empty = true;
    ParsedInternalKey parsed;
    t.max_sequence = 0;
    for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
      Slice key = iter->key();
      if (!ParseInternalKey(key, &parsed)) {
        Log(options_.info_log, "Table #%llu: unparsable key %s",
            (unsigned long long) t.meta.number,
            EscapeString(key).c_str());
        continue;
      }

      counter++;
      if (empty) {
        empty = false;
        t.meta.smallest.DecodeFrom(key);
      }
      t.meta.largest.DecodeFrom(key);
      if (parsed.sequence > t.max_sequence) {
        t.max_sequence = parsed.sequence;
      }
    }
    if (!iter->status().ok()) {
      status = iter->status();
    }
    delete iter;
    Log(options_.info_log, "Table #%llu: %d entries %s",
        (unsigned long long) t.meta.number,
        counter,
        status.ToString().c_str());

    if (status.ok()) {
      tables_.push_back(t);
    } else {
      RepairTable(fname, t);  // RepairTable archives input file.
    }
  }