kubernetes/staging/src/k8s.io/apiserver/pkg/quota/v1/resources.go

// Equals returns true if the two lists are equivalent
func Equals(a corev1.ResourceList, b corev1.ResourceList) bool { … }

// LessThanOrEqual returns true if a < b for each key in b
// If false, it returns the keys in a that exceeded b
func LessThanOrEqual(a corev1.ResourceList, b corev1.ResourceList) (bool, []corev1.ResourceName) { … }

// Max returns the result of Max(a, b) for each named resource
func Max(a corev1.ResourceList, b corev1.ResourceList) corev1.ResourceList { … }

// Add returns the result of a + b for each named resource
func Add(a corev1.ResourceList, b corev1.ResourceList) corev1.ResourceList { … }

// SubtractWithNonNegativeResult - subtracts and returns result of a - b but
// makes sure we don't return negative values to prevent negative resource usage.
func SubtractWithNonNegativeResult(a corev1.ResourceList, b corev1.ResourceList) corev1.ResourceList { … }

// Subtract returns the result of a - b for each named resource
func Subtract(a corev1.ResourceList, b corev1.ResourceList) corev1.ResourceList { … }

// Mask returns a new resource list that only has the values with the specified names
func Mask(resources corev1.ResourceList, names []corev1.ResourceName) corev1.ResourceList { … }

// ResourceNames returns a list of all resource names in the ResourceList
func ResourceNames(resources corev1.ResourceList) []corev1.ResourceName { … }

// Contains returns true if the specified item is in the list of items
func Contains(items []corev1.ResourceName, item corev1.ResourceName) bool { … }

// ContainsPrefix returns true if the specified item has a prefix that contained in given prefix Set
func ContainsPrefix(prefixSet []string, item corev1.ResourceName) bool { … }

// Intersection returns the intersection of both list of resources, deduped and sorted
func Intersection(a []corev1.ResourceName, b []corev1.ResourceName) []corev1.ResourceName { … }

// Difference returns the list of resources resulting from a-b, deduped and sorted
func Difference(a []corev1.ResourceName, b []corev1.ResourceName) []corev1.ResourceName { … }

// IsZero returns true if each key maps to the quantity value 0
func IsZero(a corev1.ResourceList) bool { … }

// RemoveZeros returns a new resource list that only has no zero values
func RemoveZeros(a corev1.ResourceList) corev1.ResourceList { … }

// IsNegative returns the set of resource names that have a negative value.
func IsNegative(a corev1.ResourceList) []corev1.ResourceName { … }

// ToSet takes a list of resource names and converts to a string set
func ToSet(resourceNames []corev1.ResourceName) sets.String { … }

// CalculateUsage calculates and returns the requested ResourceList usage.
// If an error is returned, usage only contains the resources which encountered no calculation errors.
func CalculateUsage(namespaceName string, scopes []corev1.ResourceQuotaScope, hardLimits corev1.ResourceList, registry Registry, scopeSelector *corev1.ScopeSelector) (corev1.ResourceList, error) { … }