a469a17cdf
Switched health and autopath plugin to allow any plugins to be used instead of a hardcoded list. I did not switch federation over since it wasn't obvious that anything other than kubernetes could be used with it. Fixes #1291
73 lines
1.2 KiB
Go
73 lines
1.2 KiB
Go
package health
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import (
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"net"
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"time"
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/plugin"
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"github.com/mholt/caddy"
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)
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func init() {
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caddy.RegisterPlugin("health", 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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addr, err := healthParse(c)
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if err != nil {
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return plugin.Error("health", err)
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}
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h := &health{Addr: addr}
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c.OnStartup(func() error {
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plugins := dnsserver.GetConfig(c).Handlers()
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for _, p := range plugins {
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if x, ok := p.(Healther); ok {
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h.h = append(h.h, x)
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}
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}
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return nil
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})
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c.OnStartup(func() error {
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h.poll()
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go func() {
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for {
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<-time.After(1 * time.Second)
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h.poll()
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}
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}()
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return nil
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})
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c.OnStartup(h.Startup)
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c.OnFinalShutdown(h.Shutdown)
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// Don't do AddPlugin, as health is not *really* a plugin just a separate webserver running.
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return nil
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}
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func healthParse(c *caddy.Controller) (string, error) {
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addr := ""
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for c.Next() {
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args := c.RemainingArgs()
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switch len(args) {
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case 0:
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case 1:
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addr = args[0]
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if _, _, e := net.SplitHostPort(addr); e != nil {
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return "", e
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}
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default:
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return "", c.ArgErr()
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}
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}
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return addr, nil
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}
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