mirror of
https://github.com/kubernetes-sigs/prometheus-adapter.git
synced 2026-04-07 22:25:03 +00:00
9641e70005
Fixed: * `basicMetricLister` wasn't applying the appropriate start time because I had forgotten to set the `lookback`. There are still a number of issues: * The `externalPrometheusProvider` is not hooked up to the web application yet, so it doesn't serve requests. * The namespace and label approach used in `external_info_map.go` is horrifically incorrect. It doesn't appropriately store multiple series with the same name but different labels. * The configuration is still not updated to appropriately handle external metrics, it's sort of half-piggy-backing on the pre-existing work.
52 lines
1.6 KiB
Go
52 lines
1.6 KiB
Go
package provider
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import (
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"errors"
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prom "github.com/directxman12/k8s-prometheus-adapter/pkg/client"
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"github.com/prometheus/common/model"
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"k8s.io/metrics/pkg/apis/external_metrics"
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)
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//MetricConverter provides a unified interface for converting the results of
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//Prometheus queries into external metric types.
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type MetricConverter interface {
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Convert(queryResult prom.QueryResult) (*external_metrics.ExternalMetricValueList, error)
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}
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type metricConverter struct {
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scalarConverter MetricConverter
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vectorConverter MetricConverter
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matrixConverter MetricConverter
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}
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func DefaultMetricConverter() MetricConverter {
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sampleConverter := NewSampleConverter()
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return NewMetricConverter(NewScalarConverter(), NewVectorConverter(&sampleConverter), NewMatrixConverter())
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}
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//NewMetricConverter creates a MetricCoverter, capable of converting any of the three metric types
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//returned by the Prometheus client into external metrics types.
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func NewMetricConverter(scalar MetricConverter, vector MetricConverter, matrix MetricConverter) MetricConverter {
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return &metricConverter{
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scalarConverter: scalar,
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vectorConverter: vector,
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matrixConverter: matrix,
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}
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}
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func (c *metricConverter) Convert(queryResult prom.QueryResult) (*external_metrics.ExternalMetricValueList, error) {
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if queryResult.Type == model.ValScalar {
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return c.scalarConverter.Convert(queryResult)
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}
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if queryResult.Type == model.ValVector {
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return c.vectorConverter.Convert(queryResult)
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}
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if queryResult.Type == model.ValMatrix {
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return c.matrixConverter.Convert(queryResult)
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}
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return nil, errors.New("encountered an unexpected query result type")
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}
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