Function setup

plugin/forward/setup.go:29–71

(c *caddy.Controller)

}

func setup(c *caddy.Controller) error {
	fs, err := parseForward(c)
	if err != nil {
		return plugin.Error("forward", err)
	}
	for i := range fs {
		f := fs[i]
		if len(f.toEntries) > max {
			return plugin.Error("forward", fmt.Errorf("more than %d TOs configured: %d", max, len(f.toEntries)))
		}

		if i == len(fs)-1 {
			// last forward: point next to next plugin
			dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
				f.Next = next
				return f
			})
		} else {
			// middle forward: point next to next forward
			nextForward := fs[i+1]
			dnsserver.GetConfig(c).AddPlugin(func(plugin.Handler) plugin.Handler {
				f.Next = nextForward
				return f
			})
		}

		c.OnStartup(func() error {
			return f.OnStartup()
		})
		c.OnStartup(func() error {
			if taph := dnsserver.GetConfig(c).Handler("dnstap"); taph != nil {
				f.SetTapPlugin(taph.(*dnstap.Dnstap))
			}
			return nil
		})

		c.OnShutdown(func() error {
			return f.OnShutdown()
		})
	}

	return nil
}

// OnStartup starts a goroutines for all proxies.
func (f *Forward) OnStartup() (err error) {