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plugin/view: Advanced routing interface and new 'view' plugin (#5538)

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* introduce new interface "dnsserver.Viewer", that allows a plugin implementing it to decide if a query should be routed into its server block.
* add new plugin "view", that uses the new interface to enable a user to define expression based conditions that must be met for a query to be routed to its server block.

Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
This commit is contained in:
Chris O'Haver
2022-09-08 14:56:27 -04:00
committed by GitHub
parent 1f0a41a665
commit b56b080a7c
36 changed files with 880 additions and 114 deletions
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14
plugin/metrics/vars/report.go
View File

@@ -9,7 +9,7 @@ import (
// Report reports the metrics data associated with request. This function is exported because it is also
// called from core/dnsserver to report requests hitting the server that should not be handled and are thus
// not sent down the plugin chain.
func Report(server string, req request.Request, zone, rcode, plugin string, size int, start time.Time) {
func Report(server string, req request.Request, zone, view, rcode, plugin string, size int, start time.Time) {
// Proto and Family.
net := req.Proto()
fam := "1"
@@ -18,16 +18,16 @@ func Report(server string, req request.Request, zone, rcode, plugin string, size
}
if req.Do() {
RequestDo.WithLabelValues(server, zone).Inc()
RequestDo.WithLabelValues(server, zone, view).Inc()
}
qType := qTypeString(req.QType())
RequestCount.WithLabelValues(server, zone, net, fam, qType).Inc()
RequestCount.WithLabelValues(server, zone, view, net, fam, qType).Inc()
RequestDuration.WithLabelValues(server, zone).Observe(time.Since(start).Seconds())
RequestDuration.WithLabelValues(server, zone, view).Observe(time.Since(start).Seconds())
ResponseSize.WithLabelValues(server, zone, net).Observe(float64(size))
RequestSize.WithLabelValues(server, zone, net).Observe(float64(req.Len()))
ResponseSize.WithLabelValues(server, zone, view, net).Observe(float64(size))
RequestSize.WithLabelValues(server, zone, view, net).Observe(float64(req.Len()))
ResponseRcode.WithLabelValues(server, zone, rcode, plugin).Inc()
ResponseRcode.WithLabelValues(server, zone, view, rcode, plugin).Inc()
}