registry

Documentation

Overview

Package registry operates the global registry of robotic parts.

Index

• func DiscoveryFunctionLookup(q discovery.Query) (discovery.Discover, bool)
• func FindValidServiceModels(rName resource.Name) []string
• func RegisterComponent(subtype resource.Subtype, model string, creator Component)
• func RegisterDiscoveryFunction(q discovery.Query, discover discovery.Discover)
• func RegisterResourceSubtype(subtype resource.Subtype, creator ResourceSubtype)
• func RegisterService(subtype resource.Subtype, model string, creator Service)
• func RegisteredComponents() map[string]Component
• func RegisteredResourceSubtypes() map[resource.Subtype]ResourceSubtype
• func RegisteredServices() map[string]Service
• type Component
  • func ComponentLookup(subtype resource.Subtype, model string) *Component
• type CreateComponent
• type CreateComponentWithRobot
• type CreateRPCClient
• type CreateReconfigurable
• type CreateService
• type CreateStatus
• type Dependencies
• type DependencyNotReadyError
  • func (e *DependencyNotReadyError) Error() string
• type RegDebugInfo
• type RegisterSubtypeRPCService
• type ResourceSubtype
  • func ResourceSubtypeLookup(subtype resource.Subtype) *ResourceSubtype
• type Service
  • func ServiceLookup(subtype resource.Subtype, model string) *Service
• type SubtypeGrpc

Functions

func DiscoveryFunctionLookup

func DiscoveryFunctionLookup(q discovery.Query) (discovery.Discover, bool)

DiscoveryFunctionLookup finds a discovery function registration for a given query.

func FindValidServiceModels

func FindValidServiceModels(rName resource.Name) []string

FindValidServiceModels returns a list of valid models for a specified service.

func RegisterComponent

func RegisterComponent(subtype resource.Subtype, model string, creator Component)

RegisterComponent register a creator to its corresponding component and model.

func RegisterDiscoveryFunction

func RegisterDiscoveryFunction(q discovery.Query, discover discovery.Discover)

RegisterDiscoveryFunction registers a discovery function for a given query.

func RegisterResourceSubtype

func RegisterResourceSubtype(subtype resource.Subtype, creator ResourceSubtype)

RegisterResourceSubtype register a ResourceSubtype to its corresponding component subtype.

func RegisterService

func RegisterService(subtype resource.Subtype, model string, creator Service)

RegisterService registers a service type to a registration.

func RegisteredComponents

func RegisteredComponents() map[string]Component

RegisteredComponents returns a copy of the registered components.

func RegisteredResourceSubtypes

func RegisteredResourceSubtypes() map[resource.Subtype]ResourceSubtype

RegisteredResourceSubtypes returns a copy of the registered resource subtypes.

func RegisteredServices

func RegisteredServices() map[string]Service

RegisteredServices returns a copy of the registered services.

Types

type Component

type Component struct {
	RegDebugInfo
	Constructor CreateComponent
	// TODO(RSDK-418): remove this legacy constructor once all components that use it no longer need to receive the entire robot.
	RobotConstructor CreateComponentWithRobot
}

Component stores a resource constructor (mandatory) and a Frame building function (optional).

func ComponentLookup

func ComponentLookup(subtype resource.Subtype, model string) *Component

ComponentLookup looks up a creator by the given subtype and model. nil is returned if there is no creator registered.

type CreateComponent

type CreateComponent func(ctx context.Context, deps Dependencies, config config.Component, logger golog.Logger) (interface{}, error)

A CreateComponent creates a resource from a collection of dependencies and a given config.

type CreateComponentWithRobot

type CreateComponentWithRobot func(ctx context.Context, r robot.Robot, config config.Component, logger golog.Logger) (interface{}, error)

A CreateComponentWithRobot creates a resource from a robot and a given config.

type CreateRPCClient

type CreateRPCClient func(ctx context.Context, conn rpc.ClientConn, name string, logger golog.Logger) interface{}

A CreateRPCClient will create the client for the resource.

type CreateReconfigurable

type CreateReconfigurable func(resource interface{}) (resource.Reconfigurable, error)

A CreateReconfigurable makes a reconfigurable resource from a given resource.

type CreateService

type CreateService func(ctx context.Context, r robot.Robot, config config.Service, logger golog.Logger) (interface{}, error)

A CreateService creates a service from a given config.

type CreateStatus

type CreateStatus func(ctx context.Context, resource interface{}) (interface{}, error)

CreateStatus creates a status from a given resource. The return type is expected to be comprised of string keys (or it should be possible to decompose it into string keys) and values comprised of primitives, list of primitives, maps with string keys (or at least can be decomposed into one), or lists of the aforementioned type of maps. Results with other types of data are not guaranteed.

type Dependencies

type Dependencies map[resource.Name]interface{}

Dependencies is a map of resources that a component requires for creation.

type DependencyNotReadyError

type DependencyNotReadyError struct {
	Name string
}

A DependencyNotReadyError is used whenever we reference a dependency that has not been constructed and registered yet.

func (*DependencyNotReadyError) Error

func (e *DependencyNotReadyError) Error() string

type RegDebugInfo

type RegDebugInfo struct {
	RegistrarLoc string
}

RegDebugInfo represents some runtime information about the registration used for debugging purposes.

type RegisterSubtypeRPCService

type RegisterSubtypeRPCService func(ctx context.Context, rpcServer rpc.Server, subtypeSvc subtype.Service) error

A RegisterSubtypeRPCService will register the subtype service to the grpc server.

type ResourceSubtype

type ResourceSubtype struct {
	Reconfigurable        CreateReconfigurable
	Status                CreateStatus
	RegisterRPCService    RegisterSubtypeRPCService
	RPCServiceDesc        *grpc.ServiceDesc
	ReflectRPCServiceDesc *desc.ServiceDescriptor `copy:"shallow"`
	RPCClient             CreateRPCClient
}

ResourceSubtype stores subtype-specific functions and clients.

func ResourceSubtypeLookup

func ResourceSubtypeLookup(subtype resource.Subtype) *ResourceSubtype

ResourceSubtypeLookup looks up a ResourceSubtype by the given subtype. nil is returned if there is None.

type Service

type Service struct {
	RegDebugInfo
	// MaxInstance sets a limit on the number of services allowed on a robot.
	// If MaxInstance is not set then it will default to 0 and there will be no limit.
	MaxInstance           int
	Constructor           CreateService
	AttributeMapConverter config.AttributeMapConverter
}

Service stores a Service constructor (mandatory) and an attribute converter.

func ServiceLookup

func ServiceLookup(subtype resource.Subtype, model string) *Service

ServiceLookup looks up a service registration by the given type. nil is returned if there is no registration.

type SubtypeGrpc

type SubtypeGrpc struct{}

SubtypeGrpc stores functions necessary for a resource subtype to be accessible through grpc.