autopath

Documentation

Index

• func CNAME(name string, target string, ttl uint32) *dns.CNAME
• func SplitSearch(zone, question, namespace string) (name, search string, ok bool)
• type AutoPath
• type Writer
  • func NewWriter(w dns.ResponseWriter, r *dns.Msg) *Writer
  • func (apw *Writer) Write(buf []byte) (int, error)
  • func (apw *Writer) WriteMsg(res *dns.Msg) error

Functions

func CNAME

func CNAME(name string, target string, ttl uint32) *dns.CNAME

CNAME returns a new CNAME formed from name target and ttl.

func SplitSearch

func SplitSearch(zone, question, namespace string) (name, search string, ok bool)

Types

type AutoPath

type AutoPath struct {
	NDots          int
	ResolvConfFile string
	HostSearchPath []string
	OnNXDOMAIN     int
}

AutoPath enables server side search path lookups for pods.

type Writer

type Writer struct {
	dns.ResponseWriter

	Rcode int
	// contains filtered or unexported fields
}

Writer implements a ResponseWriter that also does the following:

• reverts question section of a packet to its original state. This is done to avoid the 'Question section mismatch:' error in client.
• Defers write to the client if the response code is NXDOMAIN. This is needed to enable further search path probing if a search was not successful.
• Allow forced write to client regardless of response code. This is needed to write the packet to the client if the final search in the path fails to produce results.
• Overwrites response code with Writer.Rcode if the response code is NXDOMAIN (NameError). This is needed to support the AutoPath.OnNXDOMAIN function, which returns a NOERROR to client instead of NXDOMAIN if the final search in the path fails to produce results.

func NewWriter

func NewWriter(w dns.ResponseWriter, r *dns.Msg) *Writer

NewWriter returns a pointer to a new Writer

func (*Writer) Write

func (apw *Writer) Write(buf []byte) (int, error)

Write is a wrapper that records the size of the message that gets written.

func (*Writer) WriteMsg

func (apw *Writer) WriteMsg(res *dns.Msg) error

WriteMsg writes to client, unless response will be NXDOMAIN.