resource

package
v0.3.0-alpha.0 Latest Latest
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 Go to latest Published: Dec 5, 2022 License: MPL-2.0 Imports: 9 Imported by: 66

Documentation

Overview

Package resource provides core resource definition.

Index

Constants

This section is empty.

Variables

View Source 
var (
	VersionUndefined = Version{}
)

Special version constants.

Functions

func Equal 

func Equal(r1, r2 Resource) bool

Equal tests two resources for equality.

func IsTombstone 

func IsTombstone(res Resource) bool

IsTombstone checks if resource is represented by the Tombstone.

func MarshalYAML 

func MarshalYAML(r Resource) (interface{}, error)

MarshalYAML marshals resource to YAML definition.

func String 

func String(r Resource) string

String returns representation suitable for %s formatting.

Types

type Annotations added in v0.2.0 

type Annotations struct {
	kv.KV
}

Annotations is a set free-form of key-value pairs.

Order of keys is not guaranteed.

Annotations support copy-on-write semantics, so metadata copies share common Annotations as long as possible.

func (Annotations) Equal added in v0.2.0 

func (annotations Annotations) Equal(other Annotations) bool

Equal checks Annotations for equality.

type Any 

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

Any can hold data from any resource type.

func NewAnyFromProto 

func NewAnyFromProto(protoMd MetadataProto, protoSpec SpecProto) (*Any, error)

NewAnyFromProto unmarshals Any from protobuf interface.

func (*Any) DeepCopy 

func (a *Any) DeepCopy() Resource

DeepCopy implements resource.Resource.

func (*Any) Metadata 

func (a *Any) Metadata() *Metadata

Metadata implements resource.Resource.

func (*Any) Spec 

func (a *Any) Spec() interface{}

Spec implements resource.Resource.

func (*Any) Value 

func (a *Any) Value() interface{}

Value returns decoded value as Go type.

type Finalizer 

type Finalizer = string

Finalizer is a free-form string which blocks resource destruction.

Resource can't be destroyed until all the finalizers are cleared.

type Finalizers 

type Finalizers []Finalizer

Finalizers is a set of Finalizer's with methods to add/remove items.

func (*Finalizers) Add 

func (fins *Finalizers) Add(fin Finalizer) bool

Add a (unique) Finalizer to the set.

func (Finalizers) Empty 

func (fins Finalizers) Empty() bool

Empty returns true if list of finalizers is empty.

func (*Finalizers) Remove 

func (fins *Finalizers) Remove(fin Finalizer) bool

Remove a (unique) Finalizer from the set.

type ID 

type ID = string

ID is a resource ID.

type Kind 

type Kind interface {
	Namespace() Namespace
	Type() Type
}

Kind is a Pointer minus resource ID.

type LabelOp 

type LabelOp int

LabelOp is a match operation on labels. 

const (
	// Label with the key exists.
	LabelOpExists LabelOp = iota
	// Label with the key matches the value.
	LabelOpEqual
	// Label with the key doesn't exist.
	LabelOpNotExists
)

LabelOp values.

type LabelQuery 

type LabelQuery struct {
	Terms []LabelTerm
}

LabelQuery is a set of LabelTerms applied with AND semantics.

func (LabelQuery) Matches 

func (query LabelQuery) Matches(labels Labels) bool

Matches if the metadata labels matches the label query.

type LabelQueryOption 

type LabelQueryOption func(*LabelQuery)

LabelQueryOption allows to build a LabelQuery with functional parameters.

func LabelEqual 

func LabelEqual(label, value string) LabelQueryOption

LabelEqual checks that the label is set to the specified value.

func LabelExists 

func LabelExists(label string) LabelQueryOption

LabelExists checks that the label is set.

func LabelNotExists 

func LabelNotExists(label string) LabelQueryOption

LabelNotExists checks that the label isn't set.

func RawLabelQuery 

func RawLabelQuery(query LabelQuery) LabelQueryOption

RawLabelQuery sets the label query to the verbatim value.

type LabelTerm 

type LabelTerm struct {
	Key   string
	Value string
	Op    LabelOp
}

LabelTerm describes a filter on metadata labels.

type Labels 

type Labels struct {
	kv.KV
}

Labels is a set free-form of key-value pairs.

Order of keys is not guaranteed.

Labels support copy-on-write semantics, so metadata copies share common labels as long as possible. Labels support querying with LabelTerm.

func (Labels) Equal 

func (labels Labels) Equal(other Labels) bool

Equal checks labels for equality.

func (Labels) Matches 

func (labels Labels) Matches(term LabelTerm) bool

Matches if labels match the LabelTerm.

type List 

type List struct {
	Items []Resource
}

List is a list of resources.

type Metadata 

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

Metadata implements resource meta.

func NewMetadata 

func NewMetadata(ns Namespace, typ Type, id ID, ver Version) Metadata

NewMetadata builds new metadata.

func NewMetadataFromProto 

func NewMetadataFromProto(proto MetadataProto) (Metadata, error)

NewMetadataFromProto builds Metadata object from ProtoMetadata interface data.

func (*Metadata) Annotations added in v0.2.0 

func (md *Metadata) Annotations() *Annotations

Annotations returns a reference to the annotations.

func (Metadata) Copy 

func (md Metadata) Copy() Metadata

Copy returns metadata copy.

func (Metadata) Created 

func (md Metadata) Created() time.Time

Created returns resource creation timestamp.

func (Metadata) Equal 

func (md Metadata) Equal(other Metadata) bool

Equal tests two metadata objects for equality.

func (*Metadata) Finalizers 

func (md *Metadata) Finalizers() *Finalizers

Finalizers returns a reference to the finalizers.

func (Metadata) ID 

func (md Metadata) ID() ID

ID returns resource ID.

func (*Metadata) Labels 

func (md *Metadata) Labels() *Labels

Labels returns a reference to the labels.

func (*Metadata) MarshalYAML 

func (md *Metadata) MarshalYAML() (interface{}, error)

MarshalYAML implements yaml.Marshaller interface.

func (Metadata) Namespace 

func (md Metadata) Namespace() Namespace

Namespace returns resource namespace.

func (Metadata) Owner 

func (md Metadata) Owner() Owner

Owner returns resource owner.

func (Metadata) Phase 

func (md Metadata) Phase() Phase

Phase returns current resource phase.

func (*Metadata) SetCreated added in v0.2.0 

func (md *Metadata) SetCreated(t time.Time)

SetCreated sets the resource create timestamp.

func (*Metadata) SetOwner 

func (md *Metadata) SetOwner(owner Owner) error

SetOwner sets the resource owner.

Owner can be set only once.

func (*Metadata) SetPhase 

func (md *Metadata) SetPhase(newPhase Phase)

SetPhase updates resource state.

func (*Metadata) SetUpdated added in v0.2.0 

func (md *Metadata) SetUpdated(t time.Time)

SetUpdated sets the resource update timestamp.

func (*Metadata) SetVersion 

func (md *Metadata) SetVersion(newVersion Version)

SetVersion updates resource version.

func (Metadata) String 

func (md Metadata) String() string

String implements fmt.Stringer.

func (Metadata) Type 

func (md Metadata) Type() Type

Type returns resource types.

func (*Metadata) UnmarshalYAML added in v0.2.0 

func (md *Metadata) UnmarshalYAML(value *yaml.Node) (err error)

UnmarshalYAML implements yaml.Unmarshaler interface.

func (Metadata) Updated 

func (md Metadata) Updated() time.Time

Updated returns resource update timestamp.

func (Metadata) Version 

func (md Metadata) Version() Version

Version returns resource version.

type MetadataProto 

type MetadataProto interface {
	GetNamespace() string
	GetType() string
	GetId() string
	GetVersion() string
	GetPhase() string
	GetOwner() string
	GetFinalizers() []string
	GetCreated() *timestamp.Timestamp
	GetUpdated() *timestamp.Timestamp
	GetAnnotations() map[string]string
	GetLabels() map[string]string
}

MetadataProto is an interface for protobuf serialization of Metadata.

type Namespace 

type Namespace = string

Namespace of a resource.

type Owner 

type Owner = string

Owner of the resource (controller which manages the resource).

type Phase 

type Phase int

Phase represents state of the resource.

Resource might be either Running or TearingDown (waiting for the finalizers to be removed). 

const (
	PhaseRunning Phase = iota
	PhaseTearingDown
)

Phase constants.

func ParsePhase 

func ParsePhase(ph string) (Phase, error)

ParsePhase from string representation.

func (Phase) String 

func (ph Phase) String() string

type Pointer 

type Pointer interface {
	Kind

	ID() ID
}

Pointer is a Reference minus resource version.

type Reference 

type Reference interface {
	fmt.Stringer

	Pointer
	Version() Version
}

Reference to a resource.

type Resource 

type Resource interface {
	// Metadata for the resource.
	//
	// Metadata.Version should change each time Spec changes.
	Metadata() *Metadata

	// Opaque data resource contains.
	Spec() interface{}

	// Deep copy of the resource.
	DeepCopy() Resource
}

Resource is an abstract resource managed by the state.

Resource is uniquely identified by the tuple (Namespace, Type, ID). Resource might have additional opaque data in Spec(). When resource is updated, Version should change with each update.

type SpecProto 

type SpecProto interface {
	GetYaml() []byte
}

SpecProto is a protobuf interface of resource spec.

type Tombstone 

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

Tombstone is a resource without a Spec.

Tombstones are used to present state of a deleted resource.

func NewTombstone 

func NewTombstone(ref Reference) *Tombstone

NewTombstone builds a tombstone from resource reference.

func (*Tombstone) DeepCopy 

func (t *Tombstone) DeepCopy() Resource

DeepCopy returns self, as tombstone is immutable.

func (*Tombstone) Metadata 

func (t *Tombstone) Metadata() *Metadata

Metadata for the resource.

Metadata.Version should change each time Spec changes.

func (*Tombstone) Spec 

func (t *Tombstone) Spec() interface{}

Spec is not implemented for tobmstones.

func (*Tombstone) String 

func (t *Tombstone) String() string

String method for debugging/logging.

func (*Tombstone) Tombstone 

func (t *Tombstone) Tombstone()

Tombstone implements Tombstoned interface.

type Tombstoned 

type Tombstoned interface {
	Tombstone()
}

Tombstoned is a marker interface for Tombstones.

type Type 

type Type = string

Type is a resource type.

Type could be e.g. runtime/os/mount.

type Version 

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

Version of a resource.

func ParseVersion 

func ParseVersion(ver string) (Version, error)

ParseVersion from string representation.

func (Version) Equal 

func (v Version) Equal(other Version) bool

Equal compares versions.

func (Version) Next added in v0.2.0 

func (v Version) Next() Version

Next returns a new incremented version.

func (Version) String 

func (v Version) String() string

func (Version) Value added in v0.2.0 

func (v Version) Value() uint64

Value returns the underlying version number. Returns 0 if the version is undefined.

Source Files

View all Source files

Directories

Path Synopsis
internal
kv
Package kv implements core key-value type as a base for labels and annotations.
 Package kv implements core key-value type as a base for labels and annotations.
Package meta provides definition of core metadata resources.
 Package meta provides definition of core metadata resources.
spec
Package spec contains resource specs for the meta resources.
 Package spec contains resource specs for the meta resources.
Package protobuf provides a bridge between resources and protobuf interface.
 Package protobuf provides a bridge between resources and protobuf interface.
Package rtestutils provides utilities for testing with resource API.
 Package rtestutils provides utilities for testing with resource API.
Package typed generic based resource definition.
 Package typed generic based resource definition.

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