| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package chartengine |
| 4 | |
| 5 | import ( |
| 6 | "fmt" |
| 7 | "strings" |
| 8 | |
| 9 | "github.com/netdata/netdata/go/plugins/pkg/metrix" |
| 10 | "github.com/netdata/netdata/go/plugins/plugin/framework/chartengine/internal/program" |
| 11 | ) |
| 12 | |
| 13 | func resolveDimensionName(dim program.Dimension, metricName string, labels metrix.LabelView, meta metrix.SeriesMeta) (string, string, bool, error) { |
| 14 | if dim.InferNameFromSeriesMeta { |
| 15 | labelKey, ok, err := inferDimensionLabelKey(metricName, meta) |
| 16 | if err != nil { |
| 17 | return "", "", false, err |
| 18 | } |
| 19 | if !ok { |
| 20 | return "", "", false, nil |
| 21 | } |
| 22 | value, ok := labels.Get(labelKey) |
| 23 | if !ok || strings.TrimSpace(value) == "" { |
| 24 | return "", "", false, nil |
| 25 | } |
| 26 | return value, labelKey, true, nil |
| 27 | } |
| 28 | |
| 29 | if dim.NameFromLabel != "" { |
| 30 | value, ok := labels.Get(dim.NameFromLabel) |
| 31 | if !ok || strings.TrimSpace(value) == "" { |
| 32 | return "", "", false, nil |
| 33 | } |
| 34 | return value, dim.NameFromLabel, true, nil |
| 35 | } |
| 36 | |
| 37 | if dim.NameTemplate.Raw != "" { |
| 38 | return dim.NameTemplate.Raw, "", true, nil |
| 39 | } |
| 40 | |
| 41 | return "", "", false, nil |
| 42 | } |
| 43 | |
| 44 | func inferDimensionLabelKey(metricName string, meta metrix.SeriesMeta) (string, bool, error) { |
| 45 | switch meta.FlattenRole { |
| 46 | case metrix.FlattenRoleHistogramBucket: |
| 47 | return metrix.HistogramBucketLabel, true, nil |
| 48 | case metrix.FlattenRoleSummaryQuantile: |
| 49 | return metrix.SummaryQuantileLabel, true, nil |
| 50 | case metrix.FlattenRoleStateSetState: |
| 51 | if strings.TrimSpace(metricName) == "" { |
| 52 | return "", false, fmt.Errorf("chartengine: stateset inference requires metric family name") |
| 53 | } |
| 54 | return metricName, true, nil |
| 55 | case metrix.FlattenRoleHistogramCount, |
| 56 | metrix.FlattenRoleHistogramSum, |
| 57 | metrix.FlattenRoleSummaryCount, |
| 58 | metrix.FlattenRoleSummarySum: |
| 59 | return "", false, nil |
| 60 | case metrix.FlattenRoleNone: |
| 61 | return "", false, fmt.Errorf("chartengine: cannot infer dimension label key from non-flattened series metadata") |
| 62 | default: |
| 63 | return "", false, fmt.Errorf("chartengine: unsupported flatten role %d for runtime dimension inference", meta.FlattenRole) |
| 64 | } |
| 65 | } |