clusterspecifier

Documentation

Overview

Package clusterspecifier contains the ClusterSpecifier interface and a registry for storing and retrieving their implementations.

Index

• func Register(cs ClusterSpecifier)
• func UnregisterForTesting(typeURL string)
• type BalancerConfig
• type ClusterSpecifier
  • func Get(typeURL string) ClusterSpecifier

Functions

func Register

func Register(cs ClusterSpecifier)

Register registers the ClusterSpecifierPlugin to the ClusterSpecifier map. cs.TypeURLs() will be used as the types for this ClusterSpecifierPlugin.

NOTE: this function must only be called during initialization time (i.e. in an init() function), and is not thread-safe. If multiple cluster specifier plugins are registered with the same type URL, the one registered last will take effect.

func UnregisterForTesting

func UnregisterForTesting(typeURL string)

UnregisterForTesting unregisters the ClusterSpecifier for testing purposes.

Types

type BalancerConfig

type BalancerConfig []map[string]interface{}

BalancerConfig is the Go Native JSON representation of a balancer configuration.

type ClusterSpecifier

type ClusterSpecifier interface {
	// TypeURLs are the proto message types supported by this
	// ClusterSpecifierPlugin. A ClusterSpecifierPlugin will be registered by
	// each of its supported message types.
	TypeURLs() []string
	// ParseClusterSpecifierConfig parses the provided configuration
	// proto.Message from the top level RDS configuration. The resulting
	// BalancerConfig will be used as configuration for a child LB Policy of the
	// Cluster Manager LB Policy. A nil BalancerConfig is invalid.
	ParseClusterSpecifierConfig(proto.Message) (BalancerConfig, error)
}

ClusterSpecifier defines the parsing functionality of a Cluster Specifier.

func Get

func Get(typeURL string) ClusterSpecifier

Get returns the ClusterSpecifier registered with typeURL.

If no cluster specifier is registered with typeURL, nil will be returned.