// UsageStats calculates latest observed usage stats for all objects
func (g *GenericEvaluator) UsageStats(options quota.UsageStatsOptions) (quota.UsageStats, error) {
// default each tracked resource to zero
result := quota.UsageStats{Used: api.ResourceList{}}
for _, resourceName := range g.MatchedResourceNames {
result.Used[resourceName] = resource.MustParse("0")
}
list, err := g.ListFuncByNamespace(options.Namespace, api.ListOptions{})
if err != nil {
return result, fmt.Errorf("%s: Failed to list %v: %v", g.Name, g.GroupKind(), err)
}
_, err = meta.Accessor(list)
if err != nil {
return result, fmt.Errorf("%s: Unable to understand list result %#v", g.Name, list)
}
items, err := meta.ExtractList(list)
if err != nil {
return result, fmt.Errorf("%s: Unable to understand list result %#v (%v)", g.Name, list, err)
}
for _, item := range items {
// need to verify that the item matches the set of scopes
matchesScopes := true
for _, scope := range options.Scopes {
if !g.MatchesScope(scope, item) {
matchesScopes = false
}
}
// only count usage if there was a match
if matchesScopes {
result.Used = quota.Add(result.Used, g.Usage(item))
}
}
return result, nil
}
// UsageStats calculates latest observed usage stats for all objects
func (g *GenericEvaluator) UsageStats(options quota.UsageStatsOptions) (quota.UsageStats, error) {
// default each tracked resource to zero
result := quota.UsageStats{Used: api.ResourceList{}}
for _, resourceName := range g.MatchedResourceNames {
result.Used[resourceName] = resource.MustParse("0")
}
items, err := g.ListFuncByNamespace(options.Namespace, v1.ListOptions{
LabelSelector: labels.Everything().String(),
})
if err != nil {
return result, fmt.Errorf("%s: Failed to list %v: %v", g.Name, g.GroupKind(), err)
}
for _, item := range items {
// need to verify that the item matches the set of scopes
matchesScopes := true
for _, scope := range options.Scopes {
if !g.MatchesScope(scope, item) {
matchesScopes = false
}
}
// only count usage if there was a match
if matchesScopes {
result.Used = quota.Add(result.Used, g.Usage(item))
}
}
return result, nil
}
// CalculateUsageStats is a utility function that knows how to calculate aggregate usage.
func CalculateUsageStats(options quota.UsageStatsOptions,
listFunc ListFuncByNamespace,
scopeFunc MatchesScopeFunc,
usageFunc UsageFunc) (quota.UsageStats, error) {
// default each tracked resource to zero
result := quota.UsageStats{Used: api.ResourceList{}}
for _, resourceName := range options.Resources {
result.Used[resourceName] = resource.Quantity{Format: resource.DecimalSI}
}
items, err := listFunc(options.Namespace, v1.ListOptions{
LabelSelector: labels.Everything().String(),
})
if err != nil {
return result, fmt.Errorf("failed to list content: %v", err)
}
for _, item := range items {
// need to verify that the item matches the set of scopes
matchesScopes := true
for _, scope := range options.Scopes {
innerMatch, err := scopeFunc(scope, item)
if err != nil {
return result, nil
}
if !innerMatch {
matchesScopes = false
}
}
// only count usage if there was a match
if matchesScopes {
usage, err := usageFunc(item)
if err != nil {
return result, err
}
result.Used = quota.Add(result.Used, usage)
}
}
return result, nil
}
