responder

package
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Published: Aug 27, 2026 License: MIT Imports: 13 Imported by: 0

Documentation

Overview

Package responder answers haproxy agent-check probes over TCP: read one newline-terminated agent-send identity, write one reply line, close. Reply grammar: https://docs.haproxy.org/2.8/configuration.html#5.2-agent-check

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Config

type Config struct {
	Addr       string
	Store      Lookup
	Logger     *slog.Logger
	Registerer prometheus.Registerer

	// Timeout bounds each connection. It must stay well below haproxy's
	// check timeout.
	Timeout time.Duration
}

type Lookup

type Lookup interface {
	Synced() bool
	Lookup(identity string) (state string, found bool)
}

Lookup is the read side of the state store.

type Responder

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

Responder is the TCP listener answering agent checks.

func New

func New(cfg Config) *Responder

func (*Responder) Addr

func (r *Responder) Addr() string

Addr returns the bound listener address, or "" before Start.

func (*Responder) Name

func (r *Responder) Name() string

func (*Responder) Shutdown

func (r *Responder) Shutdown(ctx context.Context) error

func (*Responder) Start

func (r *Responder) Start(ctx context.Context) error

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