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 16 package stats 17 18 // Float64Measure is a measure for float64 values. 19 type Float64Measure struct { 20 desc *measureDescriptor 21 } 22 23 // M creates a new float64 measurement. 24 // Use Record to record measurements. 25 func (m *Float64Measure) M(v float64) Measurement { 26 return Measurement{ 27 m: m, 28 desc: m.desc, 29 v: v, 30 } 31 } 32 33 // Float64 creates a new measure for float64 values. 34 // 35 // See the documentation for interface Measure for more guidance on the 36 // parameters of this function. 37 func Float64(name, description, unit string) *Float64Measure { 38 mi := registerMeasureHandle(name, description, unit) 39 return &Float64Measure{mi} 40 } 41 42 // Name returns the name of the measure. 43 func (m *Float64Measure) Name() string { 44 return m.desc.name 45 } 46 47 // Description returns the description of the measure. 48 func (m *Float64Measure) Description() string { 49 return m.desc.description 50 } 51 52 // Unit returns the unit of the measure. 53 func (m *Float64Measure) Unit() string { 54 return m.desc.unit 55 } 56