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9e9d72655d
Make middleware that sets up a (http) handler survive a graceful restart. We calls the middleware's Shutdown function(s). If restart fails the Start function is called again. * middleware/health: OK * middleware/pprof: OK * middleware/metrics: OK All restart OK.
35 lines
607 B
Go
35 lines
607 B
Go
package setup
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import (
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"github.com/miekg/coredns/middleware"
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"github.com/miekg/coredns/middleware/health"
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)
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func Health(c *Controller) (middleware.Middleware, error) {
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addr, err := parseHealth(c)
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if err != nil {
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return nil, err
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}
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h := &health.Health{Addr: addr}
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c.Startup = append(c.Startup, h.Start)
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c.Shutdown = append(c.Shutdown, h.Shutdown)
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return nil, nil
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}
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func parseHealth(c *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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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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