managedfields

Documentation

Index

• func ExtractInto(object runtime.Object, objectType typed.ParseableType, fieldManager string, ...) error
• type GvkParser
  • func NewGVKParser(models proto.Models, preserveUnknownFields bool) (*GvkParser, error)
  • func (p *GvkParser) Type(gvk schema.GroupVersionKind) *typed.ParseableType

Functions

func ExtractInto

func ExtractInto(object runtime.Object, objectType typed.ParseableType, fieldManager string, applyConfiguration interface{}, subresource string) error

ExtractInto extracts the applied configuration state from object for fieldManager into applyConfiguration. If no managed fields are found for the given fieldManager, no error is returned, but applyConfiguration is left unpopulated. It is possible that no managed fields were found for the fieldManager because other field managers have taken ownership of all the fields previously owned by the fieldManager. It is also possible the fieldManager never owned fields.

The provided object MUST bo a root resource object since subresource objects do not contain their own managed fields. For example, an autoscaling.Scale object read from a "scale" subresource does not have any managed fields and so cannot be used as the object.

If the fields of a subresource are a subset of the fields of the root object, and their field paths and types are exactly the same, then ExtractInto can be called with the root resource as the object and the subresource as the applyConfiguration. This works for "status", obviously, because status is represented by the exact same object as the root resource. This does NOT work, for example, with the "scale" subresources of Deployment, ReplicaSet and StatefulSet. While the spec.replicas, status.replicas fields are in the same exact field path locations as they are in autoscaling.Scale, the selector fields are in different locations, and are a different type.

Types

type GvkParser

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

GvkParser contains a Parser that allows introspecting the schema.

func NewGVKParser

func NewGVKParser(models proto.Models, preserveUnknownFields bool) (*GvkParser, error)

NewGVKParser builds a GVKParser from a proto.Models. This will automatically find the proper version of the object, and the corresponding schema information.

func (*GvkParser) Type

func (p *GvkParser) Type(gvk schema.GroupVersionKind) *typed.ParseableType

Type returns a helper which can produce objects of the given type. Any errors are deferred until a further function is called.