const MODIFIED … const TAINTED … const UNTAINTED … // parseTaint parses a taint from a string, whose form must be either // '<key>=<value>:<effect>', '<key>:<effect>', or '<key>'. func parseTaint(st string) (v1.Taint, error) { … } func validateTaintEffect(effect v1.TaintEffect) error { … } // ParseTaints takes a spec which is an array and creates slices for new taints to be added, taints to be deleted. // It also validates the spec. For example, the form `<key>` may be used to remove a taint, but not to add one. func ParseTaints(spec []string) ([]v1.Taint, []v1.Taint, error) { … } // CheckIfTaintsAlreadyExists checks if the node already has taints that we want to add and returns a string with taint keys. func CheckIfTaintsAlreadyExists(oldTaints []v1.Taint, taints []v1.Taint) string { … } // DeleteTaintsByKey removes all the taints that have the same key to given taintKey func DeleteTaintsByKey(taints []v1.Taint, taintKey string) ([]v1.Taint, bool) { … } // DeleteTaint removes all the taints that have the same key and effect to given taintToDelete. func DeleteTaint(taints []v1.Taint, taintToDelete *v1.Taint) ([]v1.Taint, bool) { … } // RemoveTaint tries to remove a taint from annotations list. Returns a new copy of updated Node and true if something was updated // false otherwise. func RemoveTaint(node *v1.Node, taint *v1.Taint) (*v1.Node, bool, error) { … } // AddOrUpdateTaint tries to add a taint to annotations list. Returns a new copy of updated Node and true if something was updated // false otherwise. func AddOrUpdateTaint(node *v1.Node, taint *v1.Taint) (*v1.Node, bool, error) { … } // TaintExists checks if the given taint exists in list of taints. Returns true if exists false otherwise. func TaintExists(taints []v1.Taint, taintToFind *v1.Taint) bool { … } // TaintKeyExists checks if the given taint key exists in list of taints. Returns true if exists false otherwise. func TaintKeyExists(taints []v1.Taint, taintKeyToMatch string) bool { … } // TaintSetDiff finds the difference between two taint slices and // returns all new and removed elements of the new slice relative to the old slice. // for example: // input: taintsNew=[a b] taintsOld=[a c] // output: taintsToAdd=[b] taintsToRemove=[c] func TaintSetDiff(taintsNew, taintsOld []v1.Taint) (taintsToAdd []*v1.Taint, taintsToRemove []*v1.Taint) { … } // TaintSetFilter filters from the taint slice according to the passed fn function to get the filtered taint slice. func TaintSetFilter(taints []v1.Taint, fn func(*v1.Taint) bool) []v1.Taint { … } // CheckTaintValidation checks if the given taint is valid. // Returns error if the given taint is invalid. func CheckTaintValidation(taint v1.Taint) error { … }
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