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https://github.com/prymitive/karma
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d8d97b8914
This allows using the `keep_re` and `strip_re` keys to specify which receivers should be shown in the dashboard. This makes it easy to select groups of receivers based on naming conventions.
75 lines
2.9 KiB
Go
75 lines
2.9 KiB
Go
package transform
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import (
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"regexp"
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"sort"
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"strings"
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"github.com/prymitive/karma/internal/models"
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"github.com/prymitive/karma/internal/slices"
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)
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// StripLables allows filtering out some labels from alerts
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// it takes the list of label keys to ignore and alert label map
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// it will return label map without labels found on the ignore list
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func StripLables(keptLabels, ignoredLabels []string, keptLabelsRegex, ignoredLabelsRegex []*regexp.Regexp,
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sourceLabels models.Labels,
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) models.Labels {
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// empty keep lists means keep everything by default
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keepAll := len(keptLabels) == 0 && len(keptLabelsRegex) == 0
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labels := models.Labels{}
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var inKeep, inStrip bool
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for _, label := range sourceLabels {
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// is explicitly marked to be kept
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inKeep = slices.StringInSlice(keptLabels, label.Name) || slices.MatchesAnyRegex(label.Name, keptLabelsRegex)
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// is explicitly marked to be stripped
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inStrip = slices.StringInSlice(ignoredLabels, label.Name) || slices.MatchesAnyRegex(label.Name, ignoredLabelsRegex)
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if (keepAll || inKeep) && !inStrip {
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l := models.Label{
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Name: label.Name,
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// strip leading and trailing space in label value
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// this is to normalize values in case space is added by Alertmanager rules
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Value: strings.TrimSpace(label.Value),
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}
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labels = labels.Add(l)
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}
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}
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sort.Sort(labels)
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return labels
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}
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// StripReceivers allows filtering all alerts for specified receiver(s)
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// it will return true if alert uses receiver that should be stripped
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func StripReceivers(keptReceivers, ignoredReceivers []string, keptReceiversRegex, ignoredReceiversRegex []*regexp.Regexp, alertReceiver string) bool {
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// empty keep lists means keep everything by default
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keepAll := len(keptReceivers) == 0 && len(keptReceiversRegex) == 0
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// is explicitly marked to be kept
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inKeep := slices.StringInSlice(keptReceivers, alertReceiver) || slices.MatchesAnyRegex(alertReceiver, keptReceiversRegex)
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// is explicitly marked to be stripped
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inStrip := slices.StringInSlice(ignoredReceivers, alertReceiver) || slices.MatchesAnyRegex(alertReceiver, ignoredReceiversRegex)
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if (keepAll || inKeep) && !inStrip {
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return false
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}
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return true
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}
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// StripAnnotations allows to ignore some annotations when pulling data
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// Alertmanager, it will return true if passed annotation name should be
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// stripped
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func StripAnnotations(keptAnnotations, ignoredAnnotations []string, sourceAnnotations models.Annotations) models.Annotations {
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// empty keep list means keep everything by default
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keepAll := len(keptAnnotations) == 0
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annotations := models.Annotations{}
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for _, annotation := range sourceAnnotations {
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// is explicitly marked to be kept
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inKeep := slices.StringInSlice(keptAnnotations, annotation.Name)
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// is explicitly marked to be stripped
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inStrip := slices.StringInSlice(ignoredAnnotations, annotation.Name)
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if (keepAll || inKeep) && !inStrip {
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annotations = append(annotations, annotation)
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}
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}
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return annotations
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}
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