discovery

Documentation

Overview

Package discovery is main package of service discovery module

Index

• Constants
• type AddServiceFunc
• type Config
• type Discovery
• type RemoveServiceFunc
• type SdConfig
• type Service

Constants

const (
	// YandexMDB constant SdConfig.type
	YandexMDB = "yandex-mdb"
)

Types

type AddServiceFunc

type AddServiceFunc func(services map[string]Service) error

AddServiceFunc services arg is map serviceId -> data source name

type Config

type Config any

Config abstract configuration SdConfig.config

type Discovery

type Discovery interface {
	//Init casting abstract Config to determined structure
	Init(c Config) error
	//Start is the discoverer starting point
	Start(ctx context.Context, errCh chan<- error) error
	//Subscribe - binding "add" and "remove" functions. Functions will be called when services appear or disappear
	Subscribe(subscriberID string, addService AddServiceFunc, removeService RemoveServiceFunc) error
	//Unsubscribe - remove subscriber from list
	Unsubscribe(subscriberID string) error
}

Discovery interface of abstract discovery services

type RemoveServiceFunc

type RemoveServiceFunc func(serviceIds []string) error

RemoveServiceFunc serviceIds is array of service IDs

type SdConfig

type SdConfig struct {
	Type   string `yaml:"type"`
	Config Config `yaml:"config"`
}

SdConfig top level of configuration tree

type Service

type Service struct {
	DSN          string
	ConstLabels  map[string]string
	TargetLabels map[string]string
}

Service abstract service definition