mirror of https://github.com/k3s-io/k3s
46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
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package metrics
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import (
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"context"
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"errors"
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"github.com/gorilla/mux"
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"github.com/k3s-io/k3s/pkg/agent/https"
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"github.com/k3s-io/k3s/pkg/daemons/config"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"k8s.io/component-base/metrics/legacyregistry"
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)
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// DefaultRegisterer is the implementation of the
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// prometheus Registerer interface that all metrics operations
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// will use.
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var DefaultRegisterer = legacyregistry.Registerer()
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// DefaultGatherer is the implementation of the
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// prometheus Gatherere interface that all metrics operations
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// will use.
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var DefaultGatherer = legacyregistry.DefaultGatherer
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// DefaultMetrics is the default instance of a Metrics server
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var DefaultMetrics = &Config{
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Router: func(context.Context, *config.Node) (*mux.Router, error) {
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return nil, errors.New("not implemented")
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},
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}
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// Config holds fields for the metrics listener
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type Config struct {
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// Router will be called to add the metrics API handler to an existing router.
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Router https.RouterFunc
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}
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// Start starts binds the metrics API to an existing HTTP router.
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func (c *Config) Start(ctx context.Context, nodeConfig *config.Node) error {
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mRouter, err := c.Router(ctx, nodeConfig)
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if err != nil {
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return err
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}
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mRouter.Handle("/metrics", promhttp.HandlerFor(DefaultGatherer, promhttp.HandlerOpts{}))
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return nil
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}
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