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limit provision synchronous operation numbers #553

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limit provision synchronous operation numbers #553

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6 changes: 6 additions & 0 deletions lib/controller/controller.go
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Original file line number Diff line number Diff line change
Expand Up @@ -153,6 +153,8 @@ const (
DefaultRetryPeriod = 2 * time.Second
// DefaultTermLimit is used when option function TermLimit is omitted
DefaultTermLimit = 30 * time.Second
// DefaultMaxProvisionOperationCount is used to set the max number of provision running provision Operations at the same time
DefaultMaxProvisionOperationCount = 20
)

var errRuntime = fmt.Errorf("cannot call option functions after controller has Run")
Expand Down Expand Up @@ -445,6 +447,10 @@ func (ctrl *ProvisionController) addClaim(obj interface{}) {
}

if ctrl.shouldProvision(claim) {
if len(ctrl.leaderElectors) >= DefaultMaxProvisionOperationCount {
glog.V(4).Infof("Provisioning opearations reach max %v, waiting until complete...", DefaultMaxProvisionOperationCount)
return
}
ctrl.leaderElectorsMutex.Lock()
le, ok := ctrl.leaderElectors[claim.UID]
ctrl.leaderElectorsMutex.Unlock()
Expand Down