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. 21 syntax = "proto3"; 22 23 package grpc.testing; 24 25 // Reponse message containing the gauge name and value 26 message GaugeResponse { 27 string name = 1; 28 oneof value { 29 int64 long_value = 2; 30 double double_value = 3; 31 string string_value = 4; 32 } 33 } 34 35 // Request message containing the gauge name 36 message GaugeRequest { 37 string name = 1; 38 } 39 40 message EmptyMessage {} 41 42 service MetricsService { 43 // Returns the values of all the gauges that are currently being maintained by 44 // the service 45 rpc GetAllGauges(EmptyMessage) returns (stream GaugeResponse); 46 47 // Returns the value of one gauge 48 rpc GetGauge(GaugeRequest) returns (GaugeResponse); 49 } 50
