runtime

package
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 Go to latest Published: May 6, 2016 License: Apache-2.0 Imports: 23 Imported by: 0

Documentation

Overview

Defines conversions between generic types and structs to map query strings to struct objects.

Package runtime includes helper functions for working with API objects that follow the kubernetes API object conventions, which are:

  1. Your API objects have a common metadata struct member, TypeMeta.
  2. Your code refers to an internal set of API objects.
  3. In a separate package, you have an external set of API objects.
  4. The external set is considered to be versioned, and no breaking changes are ever made to it (fields may be added but not changed or removed).
  5. As your api evolves, you'll make an additional versioned package with every major change.
  6. Versioned packages have conversion functions which convert to and from the internal version.
  7. You'll continue to support older versions according to your deprecation policy, and you can easily provide a program/library to update old versions into new versions because of 5.
  8. All of your serializations and deserializations are handled in a centralized place.

Package runtime provides a conversion helper to make 5 easy, and the Encode/Decode/DecodeInto trio to accomplish 7. You can also register additional "codecs" which use a version of your choice. It's recommended that you register your types with runtime in your package's init function.

As a bonus, a few common types useful from all api objects and versions are provided in types.go. 

Package runtime is a generated protocol buffer package.

It is generated from these files:
	k8s.io/kubernetes/pkg/runtime/generated.proto

It has these top-level messages:
	RawExtension
	TypeMeta
	Unknown

Index

Constants

View Source 
const (
	// APIVersionInternal may be used if you are registering a type that should not
	// be considered stable or serialized - it is a convention only and has no
	// special behavior in this package.
	APIVersionInternal = "__internal"
)
View Source 
const (
	ContentTypeJSON string = "application/json"
)

Variables

View Source 
var (
	ErrInvalidLengthGenerated = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowGenerated   = fmt.Errorf("proto: integer overflow")
)
View Source 
var DefaultFramer = defaultFramer{}

DefaultFramer is valid for any stream that can read objects serially without any separation in the stream.

View Source 
var DefaultStringConversions = []interface{}{
	Convert_Slice_string_To_string,
	Convert_Slice_string_To_int,
	Convert_Slice_string_To_bool,
	Convert_Slice_string_To_int64,
}

DefaultStringConversions are helpers for converting []string and string to real values.

Functions

func CheckCodec 

func CheckCodec(c Codec, internalType Object, externalTypes ...unversioned.GroupVersionKind) error

CheckCodec makes sure that the codec can encode objects like internalType, decode all of the external types listed, and also decode them into the given object. (Will modify internalObject.) (Assumes JSON serialization.) TODO: verify that the correct external version is chosen on encode...

func Convert_Slice_string_To_bool 

func Convert_Slice_string_To_bool(input *[]string, out *bool, s conversion.Scope) error

Conver_Slice_string_To_bool will convert a string parameter to boolean. Only the absence of a value, a value of "false", or a value of "0" resolve to false. Any other value (including empty string) resolves to true.

func Convert_Slice_string_To_int 

func Convert_Slice_string_To_int(input *[]string, out *int, s conversion.Scope) error

func Convert_Slice_string_To_int64 

func Convert_Slice_string_To_int64(input *[]string, out *int64, s conversion.Scope) error

func Convert_Slice_string_To_string 

func Convert_Slice_string_To_string(input *[]string, out *string, s conversion.Scope) error

func Convert_runtime_Object_To_runtime_RawExtension 

func Convert_runtime_Object_To_runtime_RawExtension(in *Object, out *RawExtension, s conversion.Scope) error

func Convert_runtime_RawExtension_To_runtime_Object 

func Convert_runtime_RawExtension_To_runtime_Object(in *RawExtension, out *Object, s conversion.Scope) error

func DecodeInto 

func DecodeInto(d Decoder, data []byte, into Object) error

DecodeInto performs a Decode into the provided object.

func DecodeList 

func DecodeList(objects []Object, decoders ...Decoder) []error

DecodeList alters the list in place, attempting to decode any objects found in the list that have the Unknown type. Any errors that occur are returned after the entire list is processed. Decoders are tried in order.

func DeepCopy_runtime_RawExtension 

func DeepCopy_runtime_RawExtension(in RawExtension, out *RawExtension, c *conversion.Cloner) error

func DeepCopy_runtime_Scheme 

func DeepCopy_runtime_Scheme(in Scheme, out *Scheme, c *conversion.Cloner) error

func DefaultEmbeddedConversions 

func DefaultEmbeddedConversions() []interface{}

func Encode 

func Encode(e Encoder, obj Object, overrides ...unversioned.GroupVersion) ([]byte, error)

Encode is a convenience wrapper for encoding to a []byte from an Encoder

func EncodeList 

func EncodeList(e Encoder, objects []Object, overrides ...unversioned.GroupVersion) error

EncodeList ensures that each object in an array is converted to a Unknown{} in serialized form. TODO: accept a content type.

func EncodeOrDie 

func EncodeOrDie(e Encoder, obj Object) string

EncodeOrDie is a version of Encode which will panic instead of returning an error. For tests.

func FieldPtr 

func FieldPtr(v reflect.Value, fieldName string, dest interface{}) error

fieldPtr puts the address of fieldName, which must be a member of v, into dest, which must be an address of a variable to which this field's address can be assigned.

func IsMissingKind 

func IsMissingKind(err error) bool

IsMissingKind returns true if the error indicates that the provided object is missing a 'Kind' field.

func IsMissingVersion 

func IsMissingVersion(err error) bool

func IsNotRegisteredError 

func IsNotRegisteredError(err error) bool

IsNotRegisteredError returns true if the error indicates the provided object or input data is not registered.

func JSONKeyMapper 

func JSONKeyMapper(key string, sourceTag, destTag reflect.StructTag) (string, string)

JSONKeyMapper uses the struct tags on a conversion to determine the key value for the other side. Use when mapping from a map[string]* to a struct or vice versa.

func NewMissingKindErr 

func NewMissingKindErr(data string) error

func NewMissingVersionErr 

func NewMissingVersionErr(data string) error

IsMissingVersion returns true if the error indicates that the provided object is missing a 'Versioj' field.

func NewNotRegisteredErr 

func NewNotRegisteredErr(gvk unversioned.GroupVersionKind, t reflect.Type) error

NewNotRegisteredErr is exposed for testing.

func SetZeroValue 

func SetZeroValue(objPtr Object) error

SetZeroValue would set the object of objPtr to zero value of its type.

func VerifySwaggerDocsExist 

func VerifySwaggerDocsExist(kubeTypes []KubeTypes, w io.Writer) (int, error)

VerifySwaggerDocsExist writes in a io.Writer a list of structs and fields that are missing of documentation.

func WriteSwaggerDocFunc 

func WriteSwaggerDocFunc(kubeTypes []KubeTypes, w io.Writer) error

WriteSwaggerDocFunc writes a declaration of a function as a string. This function is used in Swagger as a documentation source for structs and theirs fields

Types

type Codec 

type Codec Serializer

Codec is a Serializer that deals with the details of versioning objects. It offers the same interface as Serializer, so this is a marker to consumers that care about the version of the objects they receive. 

var UnstructuredJSONScheme Codec = unstructuredJSONScheme{}

UnstructuredJSONScheme is capable of converting JSON data into the Unstructured type, which can be used for generic access to objects without a predefined scheme. TODO: move into serializer/json.

func NewCodec 

func NewCodec(e Encoder, d Decoder) Codec

NewCodec creates a Codec from an Encoder and Decoder.

type Decoder 

type Decoder interface {
	// Decode attempts to deserialize the provided data using either the innate typing of the scheme or the
	// default kind, group, and version provided. It returns a decoded object as well as the kind, group, and
	// version from the serialized data, or an error. If into is non-nil, it will be used as the target type
	// and implementations may choose to use it rather than reallocating an object. However, the object is not
	// guaranteed to be populated. The returned object is not guaranteed to match into. If defaults are
	// provided, they are applied to the data by default. If no defaults or partial defaults are provided, the
	// type of the into may be used to guide conversion decisions.
	Decode(data []byte, defaults *unversioned.GroupVersionKind, into Object) (Object, *unversioned.GroupVersionKind, error)
}

type Encoder 

type Encoder interface {
	// EncodeToStream writes an object to a stream. Override versions may be provided for each group
	// that enforce a certain versioning. Implementations may return errors if the versions are incompatible,
	// or if no conversion is defined.
	EncodeToStream(obj Object, stream io.Writer, overrides ...unversioned.GroupVersion) error
}

type FieldLabelConversionFunc 

type FieldLabelConversionFunc func(label, value string) (internalLabel, internalValue string, err error)

Function to convert a field selector to internal representation.

type Framer 

type Framer interface {
	NewFrameReader(r io.Reader) io.Reader
	NewFrameWriter(w io.Writer) io.Writer
}

Framer is a factory for creating readers and writers that obey a particular framing pattern.

type KubeTypes 

type KubeTypes []Pair

KubeTypes is an array to represent all available types in a parsed file. [0] is for the type itself

func ParseDocumentationFrom 

func ParseDocumentationFrom(src string) []KubeTypes

ParseDocumentationFrom gets all types' documentation and returns them as an array. Each type is again represented as an array (we have to use arrays as we need to be sure for the order of the fields). This function returns fields and struct definitions that have no documentation as {name, ""}.

type MultiObjectTyper 

type MultiObjectTyper []ObjectTyper

MultiObjectTyper returns the types of objects across multiple schemes in order.

func (MultiObjectTyper) IsUnversioned 

func (m MultiObjectTyper) IsUnversioned(obj Object) (bool, bool)

func (MultiObjectTyper) ObjectKind 

func (m MultiObjectTyper) ObjectKind(obj Object) (gvk unversioned.GroupVersionKind, err error)

func (MultiObjectTyper) ObjectKinds 

func (m MultiObjectTyper) ObjectKinds(obj Object) (gvks []unversioned.GroupVersionKind, err error)

func (MultiObjectTyper) Recognizes 

func (m MultiObjectTyper) Recognizes(gvk unversioned.GroupVersionKind) bool

type NegotiatedSerializer 

type NegotiatedSerializer interface {
	// SupportedMediaTypes is the media types supported for reading and writing single objects.
	SupportedMediaTypes() []string
	// SerializerForMediaType returns a serializer for the provided media type.  Options is a set of
	// parameters applied to the media type that may modify the resulting output.
	SerializerForMediaType(mediaType string, options map[string]string) (Serializer, bool)

	// SupportedStreamingMediaTypes returns the media types of the supported streaming serializers.
	// Streaming serializers control how multiple objects are written to a stream output.
	SupportedStreamingMediaTypes() []string
	// StreamingSerializerForMediaType returns a serializer for the provided media type that supports
	// reading and writing multiple objects to a stream. It returns a framer and serializer, or an
	// error if no such serializer can be created. Options is a set of parameters applied to the
	// media type that may modify the resulting output.
	StreamingSerializerForMediaType(mediaType string, options map[string]string) (Serializer, Framer, string, bool)

	// EncoderForVersion returns an encoder that ensures objects being written to the provided
	// serializer are in the provided group version.
	// TODO: take multiple group versions
	EncoderForVersion(serializer Serializer, gv unversioned.GroupVersion) Encoder
	// DecoderForVersion returns a decoder that ensures objects being read by the provided
	// serializer are in the provided group version by default.
	// TODO: take multiple group versions
	DecoderToVersion(serializer Serializer, gv unversioned.GroupVersion) Decoder
}

NegotiatedSerializer is an interface used for obtaining encoders, decoders, and serializers for multiple supported media types.

type NoopDecoder 

type NoopDecoder struct {
	Encoder
}

NoopDecoder converts an Encoder to a Serializer or Codec for code that expects them but only uses encoding.

func (NoopDecoder) Decode 

func (n NoopDecoder) Decode(data []byte, gvk *unversioned.GroupVersionKind, into Object) (Object, *unversioned.GroupVersionKind, error)

type NoopEncoder 

type NoopEncoder struct {
	Decoder
}

NoopEncoder converts an Decoder to a Serializer or Codec for code that expects them but only uses decoding.

func (NoopEncoder) EncodeToStream 

func (n NoopEncoder) EncodeToStream(obj Object, w io.Writer, overrides ...unversioned.GroupVersion) error

type Object 

type Object interface {
	GetObjectKind() unversioned.ObjectKind
}

All API types registered with Scheme must support the Object interface. Since objects in a scheme are expected to be serialized to the wire, the interface an Object must provide to the Scheme allows serializers to set the kind, version, and group the object is represented as. An Object may choose to return a no-op ObjectKindAccessor in cases where it is not expected to be serialized.

func Decode 

func Decode(d Decoder, data []byte) (Object, error)

Decode is a convenience wrapper for decoding data into an Object.

func NewEncodable 

func NewEncodable(e Encoder, obj Object, versions ...unversioned.GroupVersion) Object

NewEncodable creates an object that will be encoded with the provided codec on demand. Provided as a convenience for test cases dealing with internal objects.

func NewEncodableList 

func NewEncodableList(e Encoder, objects []Object, versions ...unversioned.GroupVersion) []Object

NewEncodableList creates an object that will be encoded with the provided codec on demand. Provided as a convenience for test cases dealing with internal objects.

func UseOrCreateObject 

func UseOrCreateObject(t Typer, c ObjectCreater, gvk unversioned.GroupVersionKind, obj Object) (Object, error)

UseOrCreateObject returns obj if the canonical ObjectKind returned by the provided typer matches gvk, or invokes the ObjectCreator to instantiate a new gvk. Returns an error if the typer cannot find the object.

type ObjectConvertor 

type ObjectConvertor interface {
	// Convert attempts to convert one object into another, or returns an error. This method does
	// not guarantee the in object is not mutated.
	Convert(in, out interface{}) error
	// ConvertToVersion takes the provided object and converts it the provided version. This
	// method does not guarantee that the in object is not mutated.
	ConvertToVersion(in Object, outVersion string) (out Object, err error)
	ConvertFieldLabel(version, kind, label, value string) (string, string, error)
}

ObjectConvertor converts an object to a different version.

type ObjectCopier 

type ObjectCopier interface {
	// Copy returns an exact copy of the provided Object, or an error if the
	// copy could not be completed.
	Copy(Object) (Object, error)
}

ObjectCopier duplicates an object.

type ObjectCreater 

type ObjectCreater interface {
	New(kind unversioned.GroupVersionKind) (out Object, err error)
}

ObjectCreater contains methods for instantiating an object by kind and version.

type ObjectTyper 

type ObjectTyper interface {
	// ObjectKind returns the default group,version,kind of the provided object, or an
	// error if the object is not recognized (IsNotRegisteredError will return true).
	ObjectKind(Object) (unversioned.GroupVersionKind, error)
	// ObjectKinds returns the all possible group,version,kind of the provided object, or an
	// error if the object is not recognized (IsNotRegisteredError will return true).
	ObjectKinds(Object) ([]unversioned.GroupVersionKind, error)
	// Recognizes returns true if the scheme is able to handle the provided version and kind,
	// or more precisely that the provided version is a possible conversion or decoding
	// target.
	Recognizes(gvk unversioned.GroupVersionKind) bool
	// IsUnversioned returns true if the provided object is considered unversioned and thus
	// should have Version and Group suppressed in the output. If the object is not recognized
	// in the scheme, ok is false.
	IsUnversioned(Object) (unversioned bool, ok bool)
}

ObjectTyper contains methods for extracting the APIVersion and Kind of objects.

type ObjectVersioner 

type ObjectVersioner interface {
	ConvertToVersion(in Object, outVersion string) (out Object, err error)
}

type Pair 

type Pair struct {
	Name, Doc string
}

Pair of strings. We keed the name of fields and the doc

type ParameterCodec 

type ParameterCodec interface {
	// DecodeParameters takes the given url.Values in the specified group version and decodes them
	// into the provided object, or returns an error.
	DecodeParameters(parameters url.Values, from unversioned.GroupVersion, into Object) error
	// EncodeParameters encodes the provided object as query parameters or returns an error.
	EncodeParameters(obj Object, to unversioned.GroupVersion) (url.Values, error)
}

ParameterCodec defines methods for serializing and deserializing API objects to url.Values and performing any necessary conversion. Unlike the normal Codec, query parameters are not self describing and the desired version must be specified.

func NewParameterCodec 

func NewParameterCodec(scheme *Scheme) ParameterCodec

NewParameterCodec creates a ParameterCodec capable of transforming url values into versioned objects and back.

type ProtobufMarshaller 

type ProtobufMarshaller interface {
	MarshalTo(data []byte) (int, error)
}

type RawExtension 

type RawExtension struct {
	// Raw is the underlying serialization of this object.
	//
	// TODO: Determine how to detect ContentType and ContentEncoding of 'Raw' data.
	Raw []byte `protobuf:"bytes,1,opt,name=raw"`
	// Object can hold a representation of this extension - useful for working with versioned
	// structs.
	Object Object `json:"-"`
}

RawExtension is used to hold extensions in external versions.

To use this, make a field which has RawExtension as its type in your external, versioned struct, and Object in your internal struct. You also need to register your various plugin types.

// Internal package: 

type MyAPIObject struct {
	runtime.TypeMeta `json:",inline"`
	MyPlugin runtime.Object `json:"myPlugin"`
}

type PluginA struct {
	AOption string `json:"aOption"`
}

// External package: 

type MyAPIObject struct {
	runtime.TypeMeta `json:",inline"`
	MyPlugin runtime.RawExtension `json:"myPlugin"`
}

type PluginA struct {
	AOption string `json:"aOption"`
}

// On the wire, the JSON will look something like this: 

{
	"kind":"MyAPIObject",
	"apiVersion":"v1",
	"myPlugin": {
		"kind":"PluginA",
		"aOption":"foo",
	},
}

So what happens? Decode first uses json or yaml to unmarshal the serialized data into your external MyAPIObject. That causes the raw JSON to be stored, but not unpacked. The next step is to copy (using pkg/conversion) into the internal struct. The runtime package's DefaultScheme has conversion functions installed which will unpack the JSON stored in RawExtension, turning it into the correct object type, and storing it in the Object. (TODO: In the case where the object is of an unknown type, a runtime.Unknown object will be created and stored.)

+protobuf=true

func (*RawExtension) Marshal 

func (m *RawExtension) Marshal() (data []byte, err error)

func (RawExtension) MarshalJSON 

func (re RawExtension) MarshalJSON() ([]byte, error)

Marshal may get called on pointers or values, so implement MarshalJSON on value. http://stackoverflow.com/questions/21390979/custom-marshaljson-never-gets-called-in-go

func (*RawExtension) MarshalTo 

func (m *RawExtension) MarshalTo(data []byte) (int, error)

func (*RawExtension) ProtoMessage 

func (*RawExtension) ProtoMessage()

func (*RawExtension) Reset 

func (m *RawExtension) Reset()

func (*RawExtension) Size 

func (m *RawExtension) Size() (n int)

func (*RawExtension) String 

func (m *RawExtension) String() string

func (*RawExtension) Unmarshal 

func (m *RawExtension) Unmarshal(data []byte) error

func (*RawExtension) UnmarshalJSON 

func (re *RawExtension) UnmarshalJSON(in []byte) error

type ResourceVersioner 

type ResourceVersioner interface {
	SetResourceVersion(obj Object, version string) error
	ResourceVersion(obj Object) (string, error)
}

ResourceVersioner provides methods for setting and retrieving the resource version from an API object.

type Scheme 

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

Scheme defines methods for serializing and deserializing API objects, a type registry for converting group, version, and kind information to and from Go schemas, and mappings between Go schemas of different versions. A scheme is the foundation for a versioned API and versioned configuration over time.

In a Scheme, a Type is a particular Go struct, a Version is a point-in-time identifier for a particular representation of that Type (typically backwards compatible), a Kind is the unique name for that Type within the Version, and a Group identifies a set of Versions, Kinds, and Types that evolve over time. An Unversioned Type is one that is not yet formally bound to a type and is promised to be backwards compatible (effectively a "v1" of a Type that does not expect to break in the future).

Schemes are not expected to change at runtime and are only threadsafe after registration is complete.

func NewScheme 

func NewScheme() *Scheme

NewScheme creates a new Scheme. This scheme is pluggable by default.

func (*Scheme) AddConversionFuncs 

func (s *Scheme) AddConversionFuncs(conversionFuncs ...interface{}) error

AddConversionFuncs adds functions to the list of conversion functions. The given functions should know how to convert between two of your API objects, or their sub-objects. We deduce how to call these functions from the types of their two parameters; see the comment for Converter.Register.

Note that, if you need to copy sub-objects that didn't change, you can use the conversion.Scope object that will be passed to your conversion function. Additionally, all conversions started by Scheme will set the SrcVersion and DestVersion fields on the Meta object. Example:

s.AddConversionFuncs( 

func(in *InternalObject, out *ExternalObject, scope conversion.Scope) error {
	// You can depend on Meta() being non-nil, and this being set to
	// the source version, e.g., ""
	s.Meta().SrcVersion
	// You can depend on this being set to the destination version,
	// e.g., "v1".
	s.Meta().DestVersion
	// Call scope.Convert to copy sub-fields.
	s.Convert(&in.SubFieldThatMoved, &out.NewLocation.NewName, 0)
	return nil
},

)

(For more detail about conversion functions, see Converter.Register's comment.)

Also note that the default behavior, if you don't add a conversion function, is to sanely copy fields that have the same names and same type names. It's OK if the destination type has extra fields, but it must not remove any. So you only need to add conversion functions for things with changed/removed fields.

func (*Scheme) AddDeepCopyFuncs 

func (s *Scheme) AddDeepCopyFuncs(deepCopyFuncs ...interface{}) error

AddDeepCopyFuncs adds a function to the list of deep-copy functions. For the expected format of deep-copy function, see the comment for Copier.RegisterDeepCopyFunction.

func (*Scheme) AddDefaultingFuncs 

func (s *Scheme) AddDefaultingFuncs(defaultingFuncs ...interface{}) error

AddDefaultingFuncs adds functions to the list of default-value functions. Each of the given functions is responsible for applying default values when converting an instance of a versioned API object into an internal API object. These functions do not need to handle sub-objects. We deduce how to call these functions from the types of their two parameters.

s.AddDefaultingFuncs( 

func(obj *v1.Pod) {
	if obj.OptionalField == "" {
		obj.OptionalField = "DefaultValue"
	}
},

)

func (*Scheme) AddFieldLabelConversionFunc 

func (s *Scheme) AddFieldLabelConversionFunc(version, kind string, conversionFunc FieldLabelConversionFunc) error

AddFieldLabelConversionFunc adds a conversion function to convert field selectors of the given kind from the given version to internal version representation.

func (*Scheme) AddGeneratedConversionFuncs 

func (s *Scheme) AddGeneratedConversionFuncs(conversionFuncs ...interface{}) error

Similar to AddConversionFuncs, but registers conversion functions that were automatically generated.

func (*Scheme) AddGeneratedDeepCopyFuncs 

func (s *Scheme) AddGeneratedDeepCopyFuncs(deepCopyFuncs ...interface{}) error

Similar to AddDeepCopyFuncs, but registers deep-copy functions that were automatically generated.

func (*Scheme) AddIgnoredConversionType 

func (s *Scheme) AddIgnoredConversionType(from, to interface{}) error

AddIgnoredConversionType identifies a pair of types that should be skipped by conversion (because the data inside them is explicitly dropped during conversion).

func (*Scheme) AddKnownTypeWithName 

func (s *Scheme) AddKnownTypeWithName(gvk unversioned.GroupVersionKind, obj Object)

AddKnownTypeWithName is like AddKnownTypes, but it lets you specify what this type should be encoded as. Useful for testing when you don't want to make multiple packages to define your structs. Version may not be empty - use the APIVersionInternal constant if you have a type that does not have a formal version.

func (*Scheme) AddKnownTypes 

func (s *Scheme) AddKnownTypes(gv unversioned.GroupVersion, types ...Object)

AddKnownTypes registers all types passed in 'types' as being members of version 'version'. All objects passed to types should be pointers to structs. The name that go reports for the struct becomes the "kind" field when encoding. Version may not be empty - use the APIVersionInternal constant if you have a type that does not have a formal version.

func (*Scheme) AddStructFieldConversion 

func (s *Scheme) AddStructFieldConversion(srcFieldType interface{}, srcFieldName string, destFieldType interface{}, destFieldName string) error

AddStructFieldConversion allows you to specify a mechanical copy for a moved or renamed struct field without writing an entire conversion function. See the comment in conversion.Converter.SetStructFieldCopy for parameter details. Call as many times as needed, even on the same fields.

func (*Scheme) AddUnversionedTypes 

func (s *Scheme) AddUnversionedTypes(version unversioned.GroupVersion, types ...Object)

AddUnversionedTypes registers the provided types as "unversioned", which means that they follow special rules. Whenever an object of this type is serialized, it is serialized with the provided group version and is not converted. Thus unversioned objects are expected to remain backwards compatible forever, as if they were in an API group and version that would never be updated.

TODO: there is discussion about removing unversioned and replacing it with objects that are manifest into 

every version with particular schemas. Resolve this method at that point.

func (*Scheme) Convert 

func (s *Scheme) Convert(in, out interface{}) error

Convert will attempt to convert in into out. Both must be pointers. For easy testing of conversion functions. Returns an error if the conversion isn't possible. You can call this with types that haven't been registered (for example, a to test conversion of types that are nested within registered types), but in that case, the conversion.Scope object passed to your conversion functions won't have SrcVersion or DestVersion fields set correctly in Meta().

func (*Scheme) ConvertFieldLabel 

func (s *Scheme) ConvertFieldLabel(version, kind, label, value string) (string, string, error)

Converts the given field label and value for an kind field selector from versioned representation to an unversioned one.

func (*Scheme) ConvertToVersion 

func (s *Scheme) ConvertToVersion(in Object, outVersion string) (Object, error)

ConvertToVersion attempts to convert an input object to its matching Kind in another version within this scheme. Will return an error if the provided version does not contain the inKind (or a mapping by name defined with AddKnownTypeWithName). Will also return an error if the conversion does not result in a valid Object being returned. The serializer handles loading/serializing nested objects.

func (*Scheme) Converter 

func (s *Scheme) Converter() *conversion.Converter

Converter allows access to the converter for the scheme

func (*Scheme) Copy 

func (s *Scheme) Copy(src Object) (Object, error)

Copy does a deep copy of an API object.

func (*Scheme) DeepCopy 

func (s *Scheme) DeepCopy(src interface{}) (interface{}, error)

Performs a deep copy of the given object.

func (*Scheme) IsUnversioned 

func (s *Scheme) IsUnversioned(obj Object) (bool, bool)

func (*Scheme) KnownTypes 

func (s *Scheme) KnownTypes(gv unversioned.GroupVersion) map[string]reflect.Type

KnownTypes returns the types known for the given version.

func (*Scheme) Log 

func (s *Scheme) Log(l conversion.DebugLogger)

Log sets a logger on the scheme. For test purposes only

func (*Scheme) New 

func (s *Scheme) New(kind unversioned.GroupVersionKind) (Object, error)

New returns a new API object of the given version and name, or an error if it hasn't been registered. The version and kind fields must be specified.

func (*Scheme) ObjectKind 

func (s *Scheme) ObjectKind(obj Object) (unversioned.GroupVersionKind, error)

ObjectKind returns the group,version,kind of the go object, or an error if it's not a pointer or is unregistered.

func (*Scheme) ObjectKinds 

func (s *Scheme) ObjectKinds(obj Object) ([]unversioned.GroupVersionKind, error)

ObjectKinds returns all possible group,version,kind of the go object, or an error if it's not a pointer or is unregistered.

func (*Scheme) Recognizes 

func (s *Scheme) Recognizes(gvk unversioned.GroupVersionKind) bool

Recognizes returns true if the scheme is able to handle the provided group,version,kind of an object.

func (*Scheme) RegisterInputDefaults 

func (s *Scheme) RegisterInputDefaults(in interface{}, fn conversion.FieldMappingFunc, defaultFlags conversion.FieldMatchingFlags) error

RegisterInputDefaults sets the provided field mapping function and field matching as the defaults for the provided input type. The fn may be nil, in which case no mapping will happen by default. Use this method to register a mechanism for handling a specific input type in conversion, such as a map[string]string to structs.

type SelfLinker 

type SelfLinker interface {
	SetSelfLink(obj Object, selfLink string) error
	SelfLink(obj Object) (string, error)

	// Knowing Name is sometimes necessary to use a SelfLinker.
	Name(obj Object) (string, error)
	// Knowing Namespace is sometimes necessary to use a SelfLinker
	Namespace(obj Object) (string, error)
}

SelfLinker provides methods for setting and retrieving the SelfLink field of an API object.

type Serializer 

type Serializer interface {
	Encoder
	Decoder
}

Serializer is the core interface for transforming objects into a serialized format and back. Implementations may choose to perform conversion of the object, but no assumptions should be made.

type TypeMeta 

type TypeMeta struct {
	APIVersion string `json:"apiVersion,omitempty" yaml:"apiVersion,omitempty" protobuf:"bytes,1,opt,name=apiVersion"`
	Kind       string `json:"kind,omitempty" yaml:"kind,omitempty" protobuf:"bytes,2,opt,name=kind"`
}

TypeMeta is shared by all top level objects. The proper way to use it is to inline it in your type, like this: 

type MyAwesomeAPIObject struct {
     runtime.TypeMeta    `json:",inline"`
     ... // other fields
}

func (obj *MyAwesomeAPIObject) SetGroupVersionKind(gvk *unversioned.GroupVersionKind) { unversioned.UpdateTypeMeta(obj,gvk) }; GroupVersionKind() *GroupVersionKind

TypeMeta is provided here for convenience. You may use it directly from this package or define your own with the same fields.

+protobuf=true

func (*TypeMeta) GroupVersionKind 

func (obj *TypeMeta) GroupVersionKind() *unversioned.GroupVersionKind

GroupVersionKind satisfies the ObjectKind interface for all objects that embed TypeMeta

func (*TypeMeta) Marshal 

func (m *TypeMeta) Marshal() (data []byte, err error)

func (*TypeMeta) MarshalTo 

func (m *TypeMeta) MarshalTo(data []byte) (int, error)

func (*TypeMeta) ProtoMessage 

func (*TypeMeta) ProtoMessage()

func (*TypeMeta) Reset 

func (m *TypeMeta) Reset()

func (*TypeMeta) SetGroupVersionKind 

func (obj *TypeMeta) SetGroupVersionKind(gvk *unversioned.GroupVersionKind)

SetGroupVersionKind satisfies the ObjectKind interface for all objects that embed TypeMeta

func (*TypeMeta) Size 

func (m *TypeMeta) Size() (n int)

func (*TypeMeta) String 

func (m *TypeMeta) String() string

func (*TypeMeta) Unmarshal 

func (m *TypeMeta) Unmarshal(data []byte) error

type Typer 

type Typer interface {
	// ObjectKind returns the version and kind of the provided object, or an
	// error if the object is not recognized (IsNotRegisteredError will return true).
	// It returns whether the object is considered unversioned at the same time.
	// TODO: align the signature of ObjectTyper with this interface
	ObjectKind(Object) (*unversioned.GroupVersionKind, bool, error)
}

Typer retrieves information about an object's group, version, and kind.

func ObjectTyperToTyper 

func ObjectTyperToTyper(typer ObjectTyper) Typer

type Unknown 

type Unknown struct {
	TypeMeta `json:",inline" protobuf:"bytes,1,opt,name=typeMeta"`
	// Raw will hold the complete serialized object which couldn't be matched
	// with a registered type. Most likely, nothing should be done with this
	// except for passing it through the system.
	Raw []byte `protobuf:"bytes,2,opt,name=raw"`
	// ContentEncoding is encoding used to encode 'Raw' data.
	// Unspecified means no encoding.
	ContentEncoding string `protobuf:"bytes,3,opt,name=contentEncoding"`
	// ContentType  is serialization method used to serialize 'Raw'.
	// Unspecified means ContentTypeJSON.
	ContentType string `protobuf:"bytes,4,opt,name=contentType"`
}

Unknown allows api objects with unknown types to be passed-through. This can be used to deal with the API objects from a plug-in. Unknown objects still have functioning TypeMeta features-- kind, version, etc. TODO: Make this object have easy access to field based accessors and settors for metadata and field mutatation.

+protobuf=true

func (*Unknown) GetObjectKind 

func (obj *Unknown) GetObjectKind() unversioned.ObjectKind

func (*Unknown) Marshal 

func (m *Unknown) Marshal() (data []byte, err error)

func (Unknown) MarshalJSON 

func (re Unknown) MarshalJSON() ([]byte, error)

Marshal may get called on pointers or values, so implement MarshalJSON on value. http://stackoverflow.com/questions/21390979/custom-marshaljson-never-gets-called-in-go

func (*Unknown) MarshalTo 

func (m *Unknown) MarshalTo(data []byte) (int, error)

func (*Unknown) NestedMarshalTo 

func (m *Unknown) NestedMarshalTo(data []byte, b ProtobufMarshaller, size uint64) (int, error)

NestedMarshalTo allows a caller to avoid extra allocations during serialization of an Unknown that will contain an object that implements ProtobufMarshaller.

func (*Unknown) ProtoMessage 

func (*Unknown) ProtoMessage()

func (*Unknown) Reset 

func (m *Unknown) Reset()

func (*Unknown) Size 

func (m *Unknown) Size() (n int)

func (*Unknown) String 

func (m *Unknown) String() string

func (*Unknown) Unmarshal 

func (m *Unknown) Unmarshal(data []byte) error

func (*Unknown) UnmarshalJSON 

func (re *Unknown) UnmarshalJSON(in []byte) error

type Unstructured 

type Unstructured struct {
	TypeMeta `json:",inline"`

	// Name is populated from metadata (if present) upon deserialization
	Name string

	// Object is a JSON compatible map with string, float, int, []interface{}, or map[string]interface{}
	// children.
	Object map[string]interface{}
}

Unstructured allows objects that do not have Golang structs registered to be manipulated generically. This can be used to deal with the API objects from a plug-in. Unstructured objects still have functioning TypeMeta features-- kind, version, etc. TODO: Make this object have easy access to field based accessors and settors for metadata and field mutatation.

func (*Unstructured) GetObjectKind 

func (obj *Unstructured) GetObjectKind() unversioned.ObjectKind

type UnstructuredList 

type UnstructuredList struct {
	TypeMeta `json:",inline"`

	// Items is a list of unstructured objects.
	Items []*Unstructured `json:"items"`
}

UnstructuredList allows lists that do not have Golang structs registered to be manipulated generically. This can be used to deal with the API lists from a plug-in.

func (*UnstructuredList) GetObjectKind 

func (obj *UnstructuredList) GetObjectKind() unversioned.ObjectKind

type VersionedObjects 

type VersionedObjects struct {
	// Objects is the set of objects retrieved during decoding, in order of conversion.
	// The 0 index is the object as serialized on the wire. If conversion has occurred,
	// other objects may be present. The right most object is the same as would be returned
	// by a normal Decode call.
	Objects []Object
}

VersionedObjects is used by Decoders to give callers a way to access all versions of an object during the decoding process.

func (*VersionedObjects) First 

func (obj *VersionedObjects) First() Object

First returns the leftmost object in the VersionedObjects array, which is usually the object as serialized on the wire.

func (*VersionedObjects) GetObjectKind 

func (obj *VersionedObjects) GetObjectKind() unversioned.ObjectKind

GetObjectKind implements Object for VersionedObjects, returning an empty ObjectKind interface if no objects are provided, or the ObjectKind interface of the object in the highest array position.

func (*VersionedObjects) Last 

func (obj *VersionedObjects) Last() Object

Last is the rightmost object in the VersionedObjects array, which is the object after all transformations have been applied. This is the same object that would be returned by Decode in a normal invocation (without VersionedObjects in the into argument).

Source Files

View all Source files

Directories

Path Synopsis
json
protobuf
Package protobuf provides a Kubernetes serializer for the protobuf format.
 Package protobuf provides a Kubernetes serializer for the protobuf format.
recognizer
versioning

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