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