148 lines
3.6 KiB
Go
148 lines
3.6 KiB
Go
// Copyright 2019, OpenCensus Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
|
|
package view
|
|
|
|
import (
|
|
"time"
|
|
|
|
"go.opencensus.io/resource"
|
|
|
|
"go.opencensus.io/metric/metricdata"
|
|
"go.opencensus.io/stats"
|
|
)
|
|
|
|
func getUnit(unit string) metricdata.Unit {
|
|
switch unit {
|
|
case "1":
|
|
return metricdata.UnitDimensionless
|
|
case "ms":
|
|
return metricdata.UnitMilliseconds
|
|
case "By":
|
|
return metricdata.UnitBytes
|
|
}
|
|
return metricdata.UnitDimensionless
|
|
}
|
|
|
|
func getType(v *View) metricdata.Type {
|
|
m := v.Measure
|
|
agg := v.Aggregation
|
|
|
|
switch agg.Type {
|
|
case AggTypeSum:
|
|
switch m.(type) {
|
|
case *stats.Int64Measure:
|
|
return metricdata.TypeCumulativeInt64
|
|
case *stats.Float64Measure:
|
|
return metricdata.TypeCumulativeFloat64
|
|
default:
|
|
panic("unexpected measure type")
|
|
}
|
|
case AggTypeDistribution:
|
|
return metricdata.TypeCumulativeDistribution
|
|
case AggTypeLastValue:
|
|
switch m.(type) {
|
|
case *stats.Int64Measure:
|
|
return metricdata.TypeGaugeInt64
|
|
case *stats.Float64Measure:
|
|
return metricdata.TypeGaugeFloat64
|
|
default:
|
|
panic("unexpected measure type")
|
|
}
|
|
case AggTypeCount:
|
|
switch m.(type) {
|
|
case *stats.Int64Measure:
|
|
return metricdata.TypeCumulativeInt64
|
|
case *stats.Float64Measure:
|
|
return metricdata.TypeCumulativeInt64
|
|
default:
|
|
panic("unexpected measure type")
|
|
}
|
|
default:
|
|
panic("unexpected aggregation type")
|
|
}
|
|
}
|
|
|
|
func getLabelKeys(v *View) []metricdata.LabelKey {
|
|
labelKeys := []metricdata.LabelKey{}
|
|
for _, k := range v.TagKeys {
|
|
labelKeys = append(labelKeys, metricdata.LabelKey{Key: k.Name()})
|
|
}
|
|
return labelKeys
|
|
}
|
|
|
|
func viewToMetricDescriptor(v *View) *metricdata.Descriptor {
|
|
return &metricdata.Descriptor{
|
|
Name: v.Name,
|
|
Description: v.Description,
|
|
Unit: convertUnit(v),
|
|
Type: getType(v),
|
|
LabelKeys: getLabelKeys(v),
|
|
}
|
|
}
|
|
|
|
func convertUnit(v *View) metricdata.Unit {
|
|
switch v.Aggregation.Type {
|
|
case AggTypeCount:
|
|
return metricdata.UnitDimensionless
|
|
default:
|
|
return getUnit(v.Measure.Unit())
|
|
}
|
|
}
|
|
|
|
func toLabelValues(row *Row, expectedKeys []metricdata.LabelKey) []metricdata.LabelValue {
|
|
labelValues := []metricdata.LabelValue{}
|
|
tagMap := make(map[string]string)
|
|
for _, tag := range row.Tags {
|
|
tagMap[tag.Key.Name()] = tag.Value
|
|
}
|
|
|
|
for _, key := range expectedKeys {
|
|
if val, ok := tagMap[key.Key]; ok {
|
|
labelValues = append(labelValues, metricdata.NewLabelValue(val))
|
|
} else {
|
|
labelValues = append(labelValues, metricdata.LabelValue{})
|
|
}
|
|
}
|
|
return labelValues
|
|
}
|
|
|
|
func rowToTimeseries(v *viewInternal, row *Row, now time.Time) *metricdata.TimeSeries {
|
|
return &metricdata.TimeSeries{
|
|
Points: []metricdata.Point{row.Data.toPoint(v.metricDescriptor.Type, now)},
|
|
LabelValues: toLabelValues(row, v.metricDescriptor.LabelKeys),
|
|
StartTime: row.Data.StartTime(),
|
|
}
|
|
}
|
|
|
|
func viewToMetric(v *viewInternal, r *resource.Resource, now time.Time) *metricdata.Metric {
|
|
rows := v.collectedRows()
|
|
if len(rows) == 0 {
|
|
return nil
|
|
}
|
|
|
|
ts := []*metricdata.TimeSeries{}
|
|
for _, row := range rows {
|
|
ts = append(ts, rowToTimeseries(v, row, now))
|
|
}
|
|
|
|
m := &metricdata.Metric{
|
|
Descriptor: *v.metricDescriptor,
|
|
TimeSeries: ts,
|
|
Resource: r,
|
|
}
|
|
return m
|
|
}
|