forked from coredns/coredns
/
healther.go
42 lines (37 loc) · 1.11 KB
/
healther.go
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package health
// Healther interface needs to be implemented by each plugin willing to
// provide healthhceck information to the health plugin. As a second step
// the plugin needs to registered against the health plugin, by addding
// it to healthers map. Note this method should return quickly, i.e. just
// checking a boolean status, as it is called every second from the health
// plugin.
type Healther interface {
// Health returns a boolean indicating the health status of a plugin.
// False indicates unhealthy.
Health() bool
}
// Ok returns the global health status of all plugin configured in this server.
func (h *health) Ok() bool {
h.RLock()
defer h.RUnlock()
return h.ok
}
// SetOk sets the global health status of all plugin configured in this server.
func (h *health) SetOk(ok bool) {
h.Lock()
defer h.Unlock()
h.ok = ok
}
// poll polls all healthers and sets the global state.
func (h *health) poll() {
for _, m := range h.h {
if !m.Health() {
h.SetOk(false)
return
}
}
h.SetOk(true)
}
// Plugins that implements the Healther interface.
// TODO(miek): none yet.
var healthers = map[string]bool{}