zones

package
v3.0.9+incompatible Latest Latest
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 Go to latest Published: Jun 3, 2020 License: Apache-2.0 Imports: 23 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var AlwaysWeighted = []uint16{
	dns.TypeA, dns.TypeAAAA, dns.TypeCNAME,
}

AlwaysWeighted types always honors 'MaxHosts', even without an explicit weight set. (This list is slightly arbitrary).

Functions

func NewZoneLabelStats 

func NewZoneLabelStats(size int) *zoneLabelStats

Types

type Label 

type Label struct {
	Label    string
	MaxHosts int
	Ttl      int
	Records  map[uint16]Records
	Weight   map[uint16]int
	Closest  bool
	Test     *health.HealthTest
}

func (*Label) FirstRR 

func (l *Label) FirstRR(dnsType uint16) dns.RR

type LabelMatch 

type LabelMatch struct {
	Label *Label
	Type  uint16
}

type MuxManager 

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

func NewMuxManager 

func NewMuxManager(path string, reg RegistrationAPI) (*MuxManager, error)

func (*MuxManager) Run 

func (mm *MuxManager) Run()

func (*MuxManager) Zones 

func (mm *MuxManager) Zones() ZoneList

GetZones returns the list of currently active zones in the mux manager. (todo: rename to Zones() when the Zones struct has been renamed to ZoneList)

type NilReg 

type NilReg struct{}

func (*NilReg) Add 

func (r *NilReg) Add(string, *Zone)

func (*NilReg) Remove 

func (r *NilReg) Remove(string)

type Record 

type Record struct {
	RR     dns.RR
	Weight int
	Loc    *geo.Location
	Test   *health.HealthTest
}

type Records 

type Records []*Record

func (Records) Len 

func (s Records) Len() int

func (Records) Swap 

func (s Records) Swap(i, j int)

type RecordsByWeight 

type RecordsByWeight struct{ Records }

func (RecordsByWeight) Less 

func (s RecordsByWeight) Less(i, j int) bool

type RegistrationAPI 

type RegistrationAPI interface {
	Add(string, *Zone)
	Remove(string)
}

type Zone 

type Zone struct {
	Origin       string
	Labels       labelmap
	LabelCount   int
	Options      ZoneOptions
	Logging      *ZoneLogging
	Metrics      ZoneMetrics
	HasClosest   bool
	HealthStatus health.Status

	sync.RWMutex
	// contains filtered or unexported fields
}

func NewZone 

func NewZone(name string) *Zone

func (*Zone) AddLabel 

func (z *Zone) AddLabel(k string) *Label

func (*Zone) AddSOA 

func (zone *Zone) AddSOA()

func (*Zone) Close 

func (z *Zone) Close()

func (*Zone) FindLabels 

func (z *Zone) FindLabels(s string, targets []string, qts []uint16) []LabelMatch

Find label "s" in country "cc" falling back to the appropriate continent and the global label name as needed. Looks for the first available qType at each targeting level. Returns a list of LabelMatch for potential labels that might satisfy the query. "MF" records are treated as aliases. The API returns all the matches the targeting will allow so health check filtering won't filter out the "best" results leaving no others.

func (*Zone) HealthRR 

func (z *Zone) HealthRR(label string, baseLabel string) []dns.RR

func (*Zone) Picker 

func (zone *Zone) Picker(label *Label, qtype uint16, max int, location *geo.Location) Records

Picker picks the best results from a label matching the qtype, up to 'max' results. If location is specified Picker will get return the "closests" results, otherwise they are returned weighted randomized.

func (*Zone) ReadZoneFile 

func (zone *Zone) ReadZoneFile(fileName string) (zerr error)

func (*Zone) SetLocations 

func (z *Zone) SetLocations()

Find the locations of all the A and AAAA records within a zone. If we were being really clever here we could use LOC records too. But for the time being we'll just use GeoIP.

func (*Zone) SetupMetrics 

func (z *Zone) SetupMetrics(old *Zone)

func (*Zone) SoaRR 

func (z *Zone) SoaRR() dns.RR

func (*Zone) StartStopHealthTests 

func (z *Zone) StartStopHealthTests(start bool, oldZone *Zone)

type ZoneList 

type ZoneList map[string]*Zone

ZoneList maps domain names to zone data

type ZoneLogging 

type ZoneLogging struct {
	StatHat    bool
	StatHatAPI string
}

type ZoneMetrics 

type ZoneMetrics struct {
	LabelStats  *zoneLabelStats
	ClientStats *zoneLabelStats
}

type ZoneOptions 

type ZoneOptions struct {
	Serial    int
	Ttl       int
	MaxHosts  int
	Contact   string
	Targeting targeting.TargetOptions
	Closest   bool
	// contains filtered or unexported fields
}

Source Files

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