syntax = "proto3";

package tensorflow;
option cc_enable_arenas = true;

// Protocol buffer representing the checkpoint state.
message CheckpointState {
  // Path to the most-recent model checkpoint.
  string model_checkpoint_path = 1;

  // Paths to all not-yet-deleted model checkpoints, sorted from oldest to
  // newest.
  // Note that the value of model_checkpoint_path should be the last item in
  // this list.
  repeated string all_model_checkpoint_paths = 2;
  // Unix timestamps corresponding to all_model_checkpoint_paths, indicating
  // when each checkpoint was created.
  repeated double all_model_checkpoint_timestamps = 3;
  // Unix timestamp indicating the creation time for the last preserved
  // checkpoint.
  double last_preserved_timestamp = 4;
}