1 // Copyright 2017, OpenCensus 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 package stats_test 16 17 import ( 18 "context" 19 20 "go.opencensus.io/stats" 21 ) 22 23 func ExampleRecord() { 24 ctx := context.Background() 25 26 // Measures are usually declared as package-private global variables. 27 openConns := stats.Int64("example.com/measure/openconns", "open connections", stats.UnitDimensionless) 28 29 // Instrumented packages call stats.Record() to record measuremens. 30 stats.Record(ctx, openConns.M(124)) // Record 124 open connections. 31 32 // Without any views or exporters registered, this statement has no observable effects. 33 } 34