1// Copyright 2015-2016 gRPC authors.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15// Contains the definitions for a metrics service and the type of metrics
16// exposed by the service.
17//
18// Currently, 'Gauge' (i.e a metric that represents the measured value of
19// something at an instant of time) is the only metric type supported by the
20// service.
21syntax = "proto3";
22
23option go_package = "google.golang.org/grpc/interop/stress/grpc_testing";
24
25package grpc.testing;
26
27// Response message containing the gauge name and value
28message GaugeResponse {
29 string name = 1;
30 oneof value {
31 int64 long_value = 2;
32 double double_value = 3;
33 string string_value = 4;
34 }
35}
36
37// Request message containing the gauge name
38message GaugeRequest {
39 string name = 1;
40}
41
42message EmptyMessage {}
43
44service MetricsService {
45 // Returns the values of all the gauges that are currently being maintained by
46 // the service
47 rpc GetAllGauges(EmptyMessage) returns (stream GaugeResponse);
48
49 // Returns the value of one gauge
50 rpc GetGauge(GaugeRequest) returns (GaugeResponse);
51}
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