9ea8cde36e
* checkpoint * Pass context through ServeDNS, enable gRPC tracing * Fix types and make tracer available to proxy. go fmt * Fix imports * Use the DoNotStartTrace option * Change to SpanFilter from DoNotStartTrace * Use new name (IncludeSpan) * Final names * Add tests; fix possible client/conn leaks in grpc * go fmt
43 lines
839 B
Go
43 lines
839 B
Go
package proxy
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import (
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/middleware"
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"github.com/mholt/caddy"
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)
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func init() {
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caddy.RegisterPlugin("proxy", caddy.Plugin{
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ServerType: "dns",
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Action: setup,
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})
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}
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func setup(c *caddy.Controller) error {
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upstreams, err := NewStaticUpstreams(&c.Dispenser)
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if err != nil {
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return middleware.Error("proxy", err)
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}
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t := dnsserver.GetMiddleware(c, "trace")
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P := &Proxy{Trace: t}
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dnsserver.GetConfig(c).AddMiddleware(func(next middleware.Handler) middleware.Handler {
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P.Next = next
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P.Upstreams = &upstreams
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return P
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})
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c.OnStartup(OnStartupMetrics)
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for _, u := range upstreams {
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c.OnStartup(func() error {
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return u.Exchanger().OnStartup(P)
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})
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c.OnShutdown(func() error {
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return u.Exchanger().OnShutdown(P)
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})
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}
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return nil
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}
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