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d8714e64e4
* Rename middleware to plugin first pass; mostly used 'sed', few spots where I manually changed text. This still builds a coredns binary. * fmt error * Rename AddMiddleware to AddPlugin * Readd AddMiddleware to remain backwards compat
43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package health
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// Healther interface needs to be implemented by each plugin willing to
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// provide healthhceck information to the health plugin. As a second step
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// the plugin needs to registered against the health plugin, by addding
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// it to healthers map. Note this method should return quickly, i.e. just
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// checking a boolean status, as it is called every second from the health
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// plugin.
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type Healther interface {
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// Health returns a boolean indicating the health status of a plugin.
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// False indicates unhealthy.
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Health() bool
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}
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// Ok returns the global health status of all plugin configured in this server.
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func (h *health) Ok() bool {
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h.RLock()
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defer h.RUnlock()
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return h.ok
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}
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// SetOk sets the global health status of all plugin configured in this server.
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func (h *health) SetOk(ok bool) {
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h.Lock()
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defer h.Unlock()
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h.ok = ok
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}
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// poll polls all healthers and sets the global state.
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func (h *health) poll() {
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for _, m := range h.h {
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if !m.Health() {
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h.SetOk(false)
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return
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}
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}
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h.SetOk(true)
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}
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// Middleware that implements the Healther interface.
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// TODO(miek): none yet.
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var healthers = map[string]bool{}
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