)

// Interface -- quota interface
type Interface interface {
	// GetQuotaOnDir gets the quota ID (if any) that applies to
	// this directory
	GetQuotaOnDir(m mount.Interface, path string) (common.QuotaID, error)

	// Does the path provided support quotas, and if so, what types
	SupportsQuotas(m mount.Interface, path string) (bool, error)
	// Assign a quota (picked by the quota mechanism) to a path,
	// and return it.

			internalLogIf(GlobalContext, errors.New("Detected older 'fifo' quota config, 'fifo' feature is removed and not supported anymore. Please clear your quota configs using 'mc admin bucket quota alias/bucket --clear' and use 'mc ilm add' for expiration of objects"), logger.WarningKind)
			return quotaCfg, fmt.Errorf("invalid quota type 'fifo'")
		}
		return quotaCfg, fmt.Errorf("Invalid quota config %#v", quotaCfg)
	}
	return
}

# critical pods are configured as a limited resource by admission_controller_config.yaml,
# which means they are disallowed unless explicitly allowed by a namespaced quota object.
# This quota effectively removes the restriction on the number of critical pods allowed in the kube-system namespace.
apiVersion: v1
kind: ResourceQuota
metadata:
  name: gcp-critical-pods
  namespace: kube-system
  labels:
    addonmanager.kubernetes.io/mode: Reconcile
spec:

	"k8s.io/apimachinery/pkg/runtime/schema"
	quota "k8s.io/apiserver/pkg/quota/v1"
	"k8s.io/apiserver/pkg/quota/v1/generic"
	"k8s.io/kubernetes/pkg/apis/authentication"
	"k8s.io/kubernetes/pkg/apis/authorization"
	"k8s.io/kubernetes/pkg/quota/v1/evaluator/core"
)

// NewQuotaConfigurationForAdmission returns a quota configuration for admission control.
func NewQuotaConfigurationForAdmission() quota.Configuration {

			klog.V(3).Infof("Attempt to clear quota failed: %v", err)
		}
		// Even if clearing the quota failed, we still need to
		// try to remove the project ID, or that may be left dangling.
		err1 := removeProjectID(path, projid)
		if err1 != nil {
			klog.V(3).Infof("Attempt to remove quota ID from system files failed: %v", err1)
		}
		clearFSInfo(path)
		if err != nil {
			return err
		}
		return err1
	}

## Set bucket quota configuration

### Set a hard quota of 1GB for a bucket `mybucket` on MinIO object storage

```sh
mc admin bucket quota myminio/mybucket --hard 1gb
```

### Verify the quota configured on `mybucket` on MinIO

```sh
mc admin bucket quota myminio/mybucket
```

### Clear bucket quota configuration for `mybucket` on MinIO

```sh

	// with any storage class, the list would include
	// ".storageclass.storage.k8s.io/requests.storage"
	MatchContains []string

	// For each intercepted request, the quota system will figure out if the input object
	// satisfies a scope which is present in this listing, then
	// quota system will ensure that there is a covering quota.  In the

//     and the running quota doesn't change.  If it did fit, check to see if any quota was changed.  If there was no quota change
//     mark the waiter as succeeded.  If some quota did change, update the running quotas
//  2. If no running quota was changed, return now since no updates are needed.

	"k8s.io/apimachinery/pkg/runtime/schema"
	quota "k8s.io/apiserver/pkg/quota/v1"
)

// implements a basic registry
type simpleRegistry struct {
	lock sync.RWMutex
	// evaluators tracked by the registry
	evaluators map[schema.GroupResource]quota.Evaluator
}

// NewRegistry creates a simple registry with initial list of evaluators
func NewRegistry(evaluators []quota.Evaluator) quota.Registry {
	return &simpleRegistry{

				// We are only interested in observing updates to quota.spec to drive updates to quota.status.
				// We ignore all updates to quota.Status because they are all driven by this controller.
				// IMPORTANT:
				// We do not use this function to queue up a full quota recalculation.  To do so, would require
				// us to enqueue all quota.Status updates, and since quota.Status updates involve additional queries