1// Copyright 2019 Istio 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 15package monitoring_test 16 17import "istio.io/pkg/monitoring" 18 19var ( 20 pushLatency = monitoring.NewGauge( 21 "push_latency_seconds", 22 "Duration, measured in seconds, of the last push", 23 monitoring.WithUnit(monitoring.Seconds), 24 ) 25) 26 27func init() { 28 monitoring.MustRegister(pushLatency) 29} 30 31func ExampleNewGauge() { 32 // only the last recorded value (99.2) will be exported for this gauge 33 pushLatency.Record(77.3) 34 pushLatency.Record(22.8) 35 pushLatency.Record(99.2) 36} 37