v1alpha1

package
v1.12.1 Latest Latest
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 Go to latest Published: Sep 11, 2020 License: Apache-2.0 Imports: 21 Imported by: 7

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Index

Constants

View Source 
const (
	// K8sMasterIPEnvironmentKey is the environment variable key used to
	// determine the kubernetes master IP address
	K8sMasterIPEnvironmentKey menv.ENVKey = "OPENEBS_IO_K8S_MASTER"
	// KubeConfigEnvironmentKey is the environment variable key used to
	// determine the kubernetes config
	KubeConfigEnvironmentKey menv.ENVKey = "OPENEBS_IO_KUBE_CONFIG"
)

Variables

This section is empty.

Functions

func Clientset 

func Clientset() *clientset

Clientset returns a pointer to clientset struct

func ConfigMap 

func ConfigMap(namespace, name string) *configmap

ConfigMap returns a new instance of configmap

func CreateUnstructuredFromJson 

func CreateUnstructuredFromJson(document string) (*unstructured.Unstructured, error)

CreateUnstructuredFromJson creates an unstructured instance from the provided JSON document

func CreateUnstructuredFromYaml 

func CreateUnstructuredFromYaml(document string) (*unstructured.Unstructured, error)

CreateUnstructuredFromYaml creates an unstructured instance from the provided YAML document

func CreateUnstructuredFromYamlBytes 

func CreateUnstructuredFromYamlBytes(raw []byte) (*unstructured.Unstructured, error)

CreateUnstructuredFromYamlBytes creates an unstructured instance from the provided YAML document in bytes

NOTE: 

This is an implementation of WithBytesUnstructuredCreator

func Dynamic 

func Dynamic() *dynamic

Dynamic returns a new instance of dynamic

func GetOSAndKernelVersion 

func GetOSAndKernelVersion() (string, error)

GetOSAndKernelVersion gets us the OS,Kernel version

func GetServerVersion 

func GetServerVersion() (*version.Info, error)

GetServerVersion uses the client-go Discovery client to get the kubernetes version struct

func GroupVersionResourceFromGVK 

func GroupVersionResourceFromGVK(unstructured *unstructured.Unstructured) (gvr schema.GroupVersionResource)

GroupVersionResourceFromGVK returns the GroupVersionResource of the provided unstructured instance by making use of this instance's GroupVersionKind info

NOTE: 

Resource is assumed as plural of Kind

func IsCASTemplate 

func IsCASTemplate(given *unstructured.Unstructured) bool

IsCASTemplate flags if the given unstructured instance is a CASTemplate scoped

NOTE: 

This is a UnstructuredPredicate implementation

func IsNameUnVersioned 

func IsNameUnVersioned(given *unstructured.Unstructured) bool

IsNameUnVersioned flags if the given unstructured instance name has version as its suffix

NOTE: 

This is a UnstructuredPredicate implementation

func IsNameVersioned 

func IsNameVersioned(given *unstructured.Unstructured) bool

IsNameVersioned flags if the given unstructured instance name does not have version as its suffix

NOTE: 

This is a UnstructuredPredicate implementation

func IsNamespaceScoped 

func IsNamespaceScoped(given *unstructured.Unstructured) bool

IsNamespaceScoped flags if the given unstructured instance is namespace scoped

NOTE: 

This is a UnstructuredPredicate implementation

func IsRunTask 

func IsRunTask(given *unstructured.Unstructured) bool

IsRunTask flags if the given unstructured instance is a RunTask scoped

NOTE: 

This is a UnstructuredPredicate implementation

func Namespace 

func Namespace() *namespace

Namespace returns a pointer to the namespace struct

func Node 

func Node() *node

func NumberOfNodes 

func NumberOfNodes() (int, error)

NumberOfNodes returns the number of nodes registered in a Kubernetes cluster

func Resource 

func Resource(gvr schema.GroupVersionResource, namespace string) *resource

Resource returns a new resource instance

Types

type ClientsetGetter 

type ClientsetGetter interface {
	Get() (*kubernetes.Clientset, error)
}

ClientsetGetter abstracts fetching of kubernetes clientset

type ConfigGetter 

type ConfigGetter interface {
	Get() (*rest.Config, error)
	Name() string
}

ConfigGetter abstracts fetching of kubernetes client config

func Config 

func Config() ConfigGetter

Config provides appropriate config getter instances that help in fetching kubernetes client config to invoke kubernetes API calls

type ConfigGetters 

type ConfigGetters []ConfigGetter

ConfigGetters holds a list of ConfigGetter instances

NOTE: 

This is an implementation of ConfigGetter

func (ConfigGetters) Get 

func (c ConfigGetters) Get() (config *rest.Config, err error)

Get fetches the kubernetes client config that is used to make kubernetes API calls. It makes use of its list of getter instances to fetch kubernetes config.

func (ConfigGetters) Name 

func (c ConfigGetters) Name() string

Name returns the name of this config getter instance

type ConfigMapGetter 

type ConfigMapGetter interface {
	Get(options metav1.GetOptions) (*corev1.ConfigMap, error)
}

ConfigMapGetter abstracts fetching of ConfigMap instance from kubernetes cluster

type Delete 

type Delete struct {
	// contains filtered or unexported fields
}

Delete is a resource that is suitable to be executed as a Delete operation

func DeleteResource 

func DeleteResource(gvr schema.GroupVersionResource, namespace string) *Delete

DeleteResource returns a new instance of delete resource

func (Delete) Create 

func (r Delete) Create(obj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)

Create creates a new resource in kubernetes cluster

func (*Delete) Delete 

func (d *Delete) Delete(obj *unstructured.Unstructured, subresources ...string) error

Delete deletes a resource from a kubernetes cluster

func (Delete) Get 

func (r Delete) Get(name string, opts metav1.GetOptions, subresources ...string) (u *unstructured.Unstructured, err error)

Get returns a specific resource from kubernetes cluster

func (Delete) List 

func (r Delete) List(opts metav1.ListOptions) (u *unstructured.UnstructuredList, err error)

List returns a list of specific resource at kubernetes cluster

func (Delete) String 

func (r Delete) String() string

String implements Stringer interface

func (Delete) Update 

func (r Delete) Update(oldobj, newobj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)

Update updates the resource at kubernetes cluster

type DynamicProvider 

type DynamicProvider interface {
	Provide() (k8sdynamic.Interface, error)
}

DynamicProvider abstracts providing kubernetes dynamic client interface

type Get 

type Get struct {
	// contains filtered or unexported fields
}

Get is resource that is suitable to be executed as Get operation

func GetResource 

func GetResource(gvr schema.GroupVersionResource, namespace string) *Get

GetResource returns a new instance of get resource

func (Get) Create 

func (r Get) Create(obj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)

Create creates a new resource in kubernetes cluster

func (Get) Delete 

func (r Get) Delete(obj *unstructured.Unstructured, subresources ...string) error

Delete deletes a existing resource in kubernetes cluster

func (*Get) Get 

func (g *Get) Get(name string, opts metav1.GetOptions, subresources ...string) (u *unstructured.Unstructured, err error)

Get gets a resource from a kubernetes cluster

func (Get) List 

func (r Get) List(opts metav1.ListOptions) (u *unstructured.UnstructuredList, err error)

List returns a list of specific resource at kubernetes cluster

func (Get) String 

func (r Get) String() string

String implements Stringer interface

func (Get) Update 

func (r Get) Update(oldobj, newobj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)

Update updates the resource at kubernetes cluster

type List 

type List struct {
	// contains filtered or unexported fields
}

List is a resource resource that is suitable to be executed as a List operation

func ListResource 

func ListResource(gvr schema.GroupVersionResource, namespace string) *List

ListResource returns a new instance of list resource

func (List) Create 

func (r List) Create(obj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)

Create creates a new resource in kubernetes cluster

func (List) Delete 

func (r List) Delete(obj *unstructured.Unstructured, subresources ...string) error

Delete deletes a existing resource in kubernetes cluster

func (List) Get 

func (r List) Get(name string, opts metav1.GetOptions, subresources ...string) (u *unstructured.Unstructured, err error)

Get returns a specific resource from kubernetes cluster

func (*List) List 

func (l *List) List(options metav1.ListOptions) (u *unstructured.UnstructuredList, err error)

List lists a resource from a kubernetes cluster

func (List) String 

func (r List) String() string

String implements Stringer interface

func (List) Update 

func (r List) Update(oldobj, newobj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)

Update updates the resource at kubernetes cluster

type NamespaceGetter 

type NamespaceGetter interface {
	Get(name string, options metav1.GetOptions) (*corev1.Namespace, error)
}

Namespacegetter abstracts fetching of Namespace from kubernetes cluster

type NamespaceLister 

type NamespaceLister interface {
	List(options metav1.ListOptions) (*corev1.NamespaceList, error)
}

NamespaceLister abstracts fetching of a list of namespaces from kubernetes cluster

type NodeGetter 

type NodeGetter interface {
	Get(name string, options metav1.GetOptions) (*corev1.Node, error)
}

NodeGetter abstracts fetching of Node details from kubernetes cluster

type NodeLister 

type NodeLister interface {
	List(options metav1.ListOptions) (*corev1.NodeList, error)
}

NodeLister abstracts fetching of Nodes from kubernetes cluster

type ResourceApplier 

type ResourceApplier interface {
	Apply(obj *unstructured.Unstructured, subresources ...string) (*unstructured.Unstructured, error)
}

ResourceApplier abstracts applying an unstructured instance that may or may not be available in kubernetes cluster

type ResourceCreateOrUpdater 

type ResourceCreateOrUpdater struct {

	// Various executors required to perform Apply
	// This is how this instance decouples its dependencies
	Getter  ResourceGetter
	Creator ResourceCreator
	Updater ResourceUpdater

	// IsSkipUpdate will not update this resource if set to true.
	// In other words, enabling this flag can only create the
	// resource in the cluster if not created previously
	IsSkipUpdate bool
	// contains filtered or unexported fields
}

ResourceCreateOrUpdater as the name suggests manages to either create or update a given resource. It does so by implementing ResourceApplier interface

func NewResourceCreateOrUpdater 

func NewResourceCreateOrUpdater(
	gvr schema.GroupVersionResource,
	namespace string,
	options ...ResourceCreateOrUpdaterOption,
) *ResourceCreateOrUpdater

NewResourceCreateOrUpdater returns a new instance of ResourceCreateOrUpdater

func (*ResourceCreateOrUpdater) Apply 

func (r *ResourceCreateOrUpdater) Apply(
	obj *unstructured.Unstructured,
	subresources ...string,
) (resource *unstructured.Unstructured, err error)

Apply applies a resource to the kubernetes cluster. In other words, it creates a new resource if it does not exist or updates the existing resource.

func (ResourceCreateOrUpdater) Create 

func (r ResourceCreateOrUpdater) Create(obj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)

Create creates a new resource in kubernetes cluster

func (ResourceCreateOrUpdater) Delete 

func (r ResourceCreateOrUpdater) Delete(obj *unstructured.Unstructured, subresources ...string) error

Delete deletes a existing resource in kubernetes cluster

func (ResourceCreateOrUpdater) Get 

func (r ResourceCreateOrUpdater) Get(name string, opts metav1.GetOptions, subresources ...string) (u *unstructured.Unstructured, err error)

Get returns a specific resource from kubernetes cluster

func (ResourceCreateOrUpdater) List 

func (r ResourceCreateOrUpdater) List(opts metav1.ListOptions) (u *unstructured.UnstructuredList, err error)

List returns a list of specific resource at kubernetes cluster

func (*ResourceCreateOrUpdater) String 

func (r *ResourceCreateOrUpdater) String() string

String implements Stringer interface

func (ResourceCreateOrUpdater) Update 

func (r ResourceCreateOrUpdater) Update(oldobj, newobj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)

Update updates the resource at kubernetes cluster

type ResourceCreateOrUpdaterOption 

type ResourceCreateOrUpdaterOption func(*ResourceCreateOrUpdater)

ResourceCreateOrUpdaterOption is a typed function used to build an instance of ResourceCreateOrUpdater

NOTE: 

This follows the pattern known as "functional options". It

is a function that operates on a given structure as a value to build (initialise, configure, sensible defaults, etc) this same structure.

func ResourceCreateOrUpdaterSkipUpdate 

func ResourceCreateOrUpdaterSkipUpdate(skip bool) ResourceCreateOrUpdaterOption

ResourceCreateOrUpdaterSkipUpdate sets IsSkipUpdate based on the provided flag

type ResourceCreator 

type ResourceCreator interface {
	Create(obj *unstructured.Unstructured, subresources ...string) (*unstructured.Unstructured, error)
}

ResourceCreator abstracts creating an unstructured instance in kubernetes cluster

type ResourceDeleteOptions 

type ResourceDeleteOptions struct {
	Deleter ResourceDeleter
}

ResourceDeleteOptions is a utility instance used during the resource's delete operations

type ResourceDeleter 

type ResourceDeleter interface {
	Delete(obj *unstructured.Unstructured, subresources ...string) error
}

ResourceDeleter abstracts deletes an unstructured instance that is available in kubernetes cluster

type ResourceGetOptions 

type ResourceGetOptions struct {
	Getter ResourceGetter
}

ResourceGetOptions is a utility instance used during the resource's get operations

type ResourceGetter 

type ResourceGetter interface {
	Get(name string, options metav1.GetOptions, subresources ...string) (*unstructured.Unstructured, error)
}

ResourceGetter abstracts fetching an unstructured instance from kubernetes cluster

type ResourceListOptions 

type ResourceListOptions struct {
	Lister ResourceLister
}

ResourceListOptions is a utility instance used during the resource's list operations

type ResourceLister 

type ResourceLister interface {
	List(options metav1.ListOptions) (*unstructured.UnstructuredList, error)
}

ResourceLister abstracts fetching an unstructured list of instance from kubernetes cluster

type ResourceUpdater 

type ResourceUpdater interface {
	Update(oldobj, newobj *unstructured.Unstructured, subresources ...string) (u *unstructured.Unstructured, err error)
}

ResourceUpdater abstracts updating an unstructured instance found in kubernetes cluster

type UnstructedList 

type UnstructedList struct {
	Items []*unstructured.Unstructured
}

UnstructedList represents a list of unstructured instances

func (UnstructedList) Map 

func (u UnstructedList) Map(m UnstructuredMiddleware, p ...UnstructuredPredicate) (ul UnstructedList)

Map will map each of its instance against the provided middleware if the provided predicate evaluations succeed

func (UnstructedList) MapAll 

func (u UnstructedList) MapAll(m []UnstructuredMiddleware, p ...UnstructuredPredicate) (ul UnstructedList)

MapAll will map all the provided middlewares against each of its instance if the provided predicate evaluations succeed

func (UnstructedList) MapAllIfAny 

func (u UnstructedList) MapAllIfAny(m []UnstructuredMiddleware, p ...UnstructuredPredicate) (ul UnstructedList)

MapAllIfAny will map all the provided middlewares against each of its instance if at least one of the provided predicate evaluations succeed

type UnstructuredCreator 

type UnstructuredCreator func(document string) (*unstructured.Unstructured, error)

UnstructuredCreator abstracts creation of unstructured instance from the provided document

type UnstructuredMiddleware 

type UnstructuredMiddleware func(given *unstructured.Unstructured) (updated *unstructured.Unstructured)

UnstructuredMiddleware abstracts updating given unstructured instance

func AddKubeServerVersionToLabels 

func AddKubeServerVersionToLabels(override bool) UnstructuredMiddleware

AddKubeServerVersionToLabels adds kubernetes server version to instance's labels

TODO Move this override flag to a Predicate. This will follow idiomatic Maya convention to separate conditional(s) logic from core business logic. This in turn helps in readability & maintainability of the codebase.

e.g. func IsLabelSet(key string) UnstructuredPredicate {...} func IsLabelUnSet(key string) UnstructuredPredicate {...}

func AddNameToLabels 

func AddNameToLabels(key string, override bool) UnstructuredMiddleware

AddNameToLabels extracts the instance's name & adds it to the same instance's labels mapped by the provided label key

TODO Move this override flag to a Predicate. This will follow idiomatic Maya convention to separate conditional(s) logic from core business logic. This in turn helps in readability & maintainability of the codebase.

e.g. func IsLabelSet(key string) UnstructuredPredicate {...} func IsLabelUnSet(key string) UnstructuredPredicate {...}

func SuffixNameWithVersion 

func SuffixNameWithVersion() UnstructuredMiddleware

SuffixNameWithVersion suffixes the given unstructured instance's name with current version Converting to lowercase is required as the version can have custom tags having uppercase characters like 1.11.0-ce-RC2 and uppercase characters are not valid in names of the k8s resources

func SuffixSliceWithVersionAtPath 

func SuffixSliceWithVersionAtPath(o []interface{}, path string) UnstructuredMiddleware

SuffixSliceWithVersionAtPath updates the given unstructured instance's path with provided slice after suffixing each slice item with version

func SuffixStringSliceWithVersionAtPath 

func SuffixStringSliceWithVersionAtPath(s []string, path string) UnstructuredMiddleware

SuffixStringSliceWithVersionAtPath updates the given unstructured instance's path with provided slice after suffixing each slice item with version

func SuffixStringWithVersionAtPath 

func SuffixStringWithVersionAtPath(s, path string) UnstructuredMiddleware

SuffixStringWithVersionAtPath updates the given unstructured instance's path with provided string after suffixing it with version

func SuffixWithVersionAtPath 

func SuffixWithVersionAtPath(path string) UnstructuredMiddleware

SuffixWithVersionAtPath suffixes the value(s) extracted from the provided path with version

NOTE: Currently supports path having following values: - string - []string

func UnstructuredMap 

func UnstructuredMap(m UnstructuredMiddleware, p ...UnstructuredPredicate) UnstructuredMiddleware

UnstructuredMap maps the given unstructured instance by executing the provided middleware. Map is considered if all the provided predicate evaluations succeed.

func UnstructuredMapAll 

func UnstructuredMapAll(m []UnstructuredMiddleware, p ...UnstructuredPredicate) UnstructuredMiddleware

UnstructuredMapAll maps the given unstructured instance by executing all the provided middlewares. Map is considered if the provided predicate evaluations succeed.

func UnstructuredMapAllIfAny 

func UnstructuredMapAllIfAny(m []UnstructuredMiddleware, p ...UnstructuredPredicate) UnstructuredMiddleware

UnstructuredMapAllIfAny maps the given unstructured instance by executing all the provided middlewares. Map is considered if atleast one of the provided predicate evaluations succeed.

func UnstructuredMapIfAny 

func UnstructuredMapIfAny(m UnstructuredMiddleware, p ...UnstructuredPredicate) UnstructuredMiddleware

UnstructuredMapIfAny maps the given unstructured instance by executing the provided middleware. Map is considered if at least one of the provided predicate evaluations succeed.

func UpdateLabels 

func UpdateLabels(l map[string]string, override bool) UnstructuredMiddleware

UpdateLabels updates the unstructured instance's labels

TODO Move this override flag to a Predicate. This will follow idiomatic Maya convention to separate conditional(s) logic from core business logic. This in turn helps in readability & maintainability of the codebase.

e.g. func IsLabelSet(key string) UnstructuredPredicate {...} func IsLabelUnSet(key string) UnstructuredPredicate {...}

func UpdateNamespace 

func UpdateNamespace(n string) UnstructuredMiddleware

UpdateNamespace updates the given unstructured instance's namespace with a valid namespace i.e. non-empty namespace

type UnstructuredPredicate 

type UnstructuredPredicate func(given *unstructured.Unstructured) bool

UnstructuredPredicate abstracts evaluating a condition against the provided unstructured instance

type UnstructuredPredicateList 

type UnstructuredPredicateList []UnstructuredPredicate

UnstructuredPredicateList represents a list of unstructured predicates

func (UnstructuredPredicateList) All 

func (l UnstructuredPredicateList) All(given *unstructured.Unstructured) bool

All evaluates if all the predicates succeed

func (UnstructuredPredicateList) Any 

func (l UnstructuredPredicateList) Any(given *unstructured.Unstructured) bool

Any evaluates if at least one of the predicates succeed

type WithBytesUnstructuredCreator 

type WithBytesUnstructuredCreator func(raw []byte) (*unstructured.Unstructured, error)

WithBytesUnstructuredCreator abstracts creation of unstructured instance from the provided bytes

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