Exemplo n.º 1
0
// 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
}
Exemplo n.º 2
0
// 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
}
Exemplo n.º 3
0
// 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
}