a322d90f6f
* Add a template plugin The template plugin matches the incoming query by class, type and regex and templates a response with go templates. * Fix go style errors * Fix template README example * Fix corefile example in plugin/template * Clarify plugin/template/README.md Add more details and external links where needed. * Fix code issues in plugin/template * Add template metrics * Add section and template to template plugin metrics * Fix style / remove extra newline on go imports * Fix typo in plugin/template/README.md * Update README.md I've change the format a bit in a PR that I merged yesterday. * Add authority section to plugin/template * Fix naming of incoming query name in plugin/template/README.md * Fix doc syntax in plugin/template/README.md * Add authority section to plugin/template/README.md config overview * Add metric labels to plugin/template/README.md metrics section * Use request.Request to pass state to the template matcher
43 lines
1.2 KiB
Go
43 lines
1.2 KiB
Go
package template
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import (
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"sync"
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"github.com/coredns/coredns/plugin"
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"github.com/prometheus/client_golang/prometheus"
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)
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// Metrics for template.
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var (
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TemplateMatchesCount = prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: "template",
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Name: "matches_total",
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Help: "Counter of template regex matches.",
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}, []string{"regex"})
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TemplateFailureCount = prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: "template",
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Name: "template_failures_total",
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Help: "Counter of go template failures.",
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}, []string{"regex", "section", "template"})
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TemplateRRFailureCount = prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: "template",
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Name: "rr_failures_total",
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Help: "Counter of mis-templated RRs.",
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}, []string{"regex", "section", "template"})
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)
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// OnStartupMetrics sets up the metrics on startup.
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func OnStartupMetrics() error {
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metricsOnce.Do(func() {
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prometheus.MustRegister(TemplateMatchesCount)
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prometheus.MustRegister(TemplateFailureCount)
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prometheus.MustRegister(TemplateRRFailureCount)
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})
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return nil
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}
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var metricsOnce sync.Once
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