liveness.proto

// Copyright 2016 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
//
// Author: Spencer Kimball (spencer@cockroachlabs.com)

syntax = "proto3";
package cockroach.storage;
option go_package = "storage";

import "cockroach/util/hlc/timestamp.proto";
import "gogoproto/gogo.proto";

// Liveness holds information about a node's latest heartbeat and epoch.
message Liveness {
  int32 node_id = 1 [(gogoproto.customname) = "NodeID",
      (gogoproto.casttype) = "github.com/cockroachdb/cockroach/roachpb.NodeID"];
  // Epoch is a monotonically-increasing value for node liveness. It
  // may be incremented every time a node's expiration is older than a
  // threshold liveness duration.
  int64 epoch = 2;
  // The timestamp at which this liveness record expires.
  util.hlc.Timestamp expiration = 3 [(gogoproto.nullable) = false];
}