Documentation
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Overview ¶
Package etcd has a generic implementation of a registry that stores things in etcd.
Index ¶
- func NamespaceKeyFunc(ctx api.Context, prefix string, name string) (string, error)
- func NamespaceKeyRootFunc(ctx api.Context, prefix string) string
- func NoNamespaceKeyFunc(ctx api.Context, prefix string, name string) (string, error)
- func StorageWithCacher(storageInterface storage.Interface, capacity int, objectType runtime.Object, ...) storage.Interface
- type Etcd
- func (e *Etcd) Create(ctx api.Context, obj runtime.Object) (runtime.Object, error)
- func (e *Etcd) Delete(ctx api.Context, name string, options *api.DeleteOptions) (runtime.Object, error)
- func (e *Etcd) DeleteCollection(ctx api.Context, options *api.DeleteOptions, listOptions *api.ListOptions) (runtime.Object, error)
- func (e *Etcd) Export(ctx api.Context, name string, opts unversioned.ExportOptions) (runtime.Object, error)
- func (e *Etcd) Get(ctx api.Context, name string) (runtime.Object, error)
- func (e *Etcd) List(ctx api.Context, options *api.ListOptions) (runtime.Object, error)
- func (e *Etcd) ListPredicate(ctx api.Context, m generic.Matcher, options *api.ListOptions) (runtime.Object, error)
- func (e *Etcd) New() runtime.Object
- func (e *Etcd) NewList() runtime.Object
- func (e *Etcd) Update(ctx api.Context, obj runtime.Object) (runtime.Object, bool, error)
- func (e *Etcd) Watch(ctx api.Context, options *api.ListOptions) (watch.Interface, error)
- func (e *Etcd) WatchPredicate(ctx api.Context, m generic.Matcher, resourceVersion string) (watch.Interface, error)
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func NamespaceKeyFunc ¶
NamespaceKeyFunc is the default function for constructing etcd paths to a resource relative to prefix enforcing namespace rules. If no namespace is on context, it errors.
func NamespaceKeyRootFunc ¶
NamespaceKeyRootFunc is the default function for constructing etcd paths to resource directories enforcing namespace rules.
func NoNamespaceKeyFunc ¶
NoNamespaceKeyFunc is the default function for constructing etcd paths to a resource relative to prefix without a namespace
func StorageWithCacher ¶
func StorageWithCacher( storageInterface storage.Interface, capacity int, objectType runtime.Object, resourcePrefix string, scopeStrategy rest.NamespaceScopedStrategy, newListFunc func() runtime.Object) storage.Interface
Creates a cacher on top of the given 'storageInterface'.
Types ¶
type Etcd ¶
type Etcd struct {
// Called to make a new object, should return e.g., &api.Pod{}
NewFunc func() runtime.Object
// Called to make a new listing object, should return e.g., &api.PodList{}
NewListFunc func() runtime.Object
// Used for error reporting
QualifiedResource unversioned.GroupResource
// Used for listing/watching; should not include trailing "/"
KeyRootFunc func(ctx api.Context) string
// Called for Create/Update/Get/Delete. Note that 'namespace' can be
// gotten from ctx.
KeyFunc func(ctx api.Context, name string) (string, error)
// Called to get the name of an object
ObjectNameFunc func(obj runtime.Object) (string, error)
// Return the TTL objects should be persisted with. Update is true if this
// is an operation against an existing object. Existing is the current TTL
// or the default for this operation.
TTLFunc func(obj runtime.Object, existing uint64, update bool) (uint64, error)
// Returns a matcher corresponding to the provided labels and fields.
PredicateFunc func(label labels.Selector, field fields.Selector) generic.Matcher
// Called on all objects returned from the underlying store, after
// the exit hooks are invoked. Decorators are intended for integrations
// that are above etcd and should only be used for specific cases where
// storage of the value in etcd is not appropriate, since they cannot
// be watched.
Decorator rest.ObjectFunc
// Allows extended behavior during creation, required
CreateStrategy rest.RESTCreateStrategy
// On create of an object, attempt to run a further operation.
AfterCreate rest.ObjectFunc
// Allows extended behavior during updates, required
UpdateStrategy rest.RESTUpdateStrategy
// On update of an object, attempt to run a further operation.
AfterUpdate rest.ObjectFunc
// Allows extended behavior during updates, optional
DeleteStrategy rest.RESTDeleteStrategy
// On deletion of an object, attempt to run a further operation.
AfterDelete rest.ObjectFunc
// If true, return the object that was deleted. Otherwise, return a generic
// success status response.
ReturnDeletedObject bool
// Allows extended behavior during export, optional
ExportStrategy rest.RESTExportStrategy
// Used for all etcd access functions
Storage storage.Interface
}
Etcd implements generic.Registry, backing it with etcd storage. It's intended to be embeddable, so that you can implement any non-generic functions if needed. You must supply a value for every field below before use; these are left public as it's meant to be overridable if need be. This object is intended to be copyable so that it can be used in different ways but share the same underlying behavior.
The intended use of this type is embedding within a Kind specific RESTStorage implementation. This type provides CRUD semantics on a Kubelike resource, handling details like conflict detection with ResourceVersion and semantics. The RESTCreateStrategy and RESTUpdateStrategy are generic across all backends, and encapsulate logic specific to the API.
TODO: make the default exposed methods exactly match a generic RESTStorage TODO: because all aspects of etcd have been removed it should really
just be called a registry implementation.
func (*Etcd) Delete ¶
func (e *Etcd) Delete(ctx api.Context, name string, options *api.DeleteOptions) (runtime.Object, error)
Delete removes the item from etcd.
func (*Etcd) DeleteCollection ¶
func (e *Etcd) DeleteCollection(ctx api.Context, options *api.DeleteOptions, listOptions *api.ListOptions) (runtime.Object, error)
DeleteCollection remove all items returned by List with a given ListOptions from etcd.
DeleteCollection is currently NOT atomic. It can happen that only subset of objects will be deleted from etcd, and then an error will be returned. In case of success, the list of deleted objects will be returned.
TODO: Currently, there is no easy way to remove 'directory' entry from etcd (if we are removing all objects of a given type) with the current API (it's technically possibly with etcd API, but watch is not delivered correctly then). It will be possible to fix it with v3 etcd API.
func (*Etcd) Export ¶
func (e *Etcd) Export(ctx api.Context, name string, opts unversioned.ExportOptions) (runtime.Object, error)
Implements the rest.Exporter interface
func (*Etcd) ListPredicate ¶
func (e *Etcd) ListPredicate(ctx api.Context, m generic.Matcher, options *api.ListOptions) (runtime.Object, error)
ListPredicate returns a list of all the items matching m.
func (*Etcd) Update ¶
Update performs an atomic update and set of the object. Returns the result of the update or an error. If the registry allows create-on-update, the create flow will be executed. A bool is returned along with the object and any errors, to indicate object creation.
Source Files