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52b49f4838
Implement health.Healther in erratic and kubernetes plugin. The kubernetes' healtcheck is only performed on startup - i.e. turn healthy after the initial loading. Erratic follow the drop count: every query%drop turns the healthcheck unhealthy. Fixes: #985
45 lines
1.1 KiB
Go
45 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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// Plugins that implements the Healther interface.
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var healthers = map[string]bool{
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"erratic": true,
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"kubernetes": true,
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}
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