dnsdata

package
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 Go to latest Published: Nov 27, 2024 License: Apache-2.0 Imports: 22 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	LongTTL  = 86400  // the default TTL for most of the record types
	ShortTTL = 2560   // the default TTL for SOA records
	LinkTTL  = 259200 // the default TTL for NS records
)

TTL constants

View Source 
const (
	// RangePointKeyMarker is the prefix for the RangePoint keys
	RangePointKeyMarker = "\000\000\000!"
	// MlenNoLoc is the special value of the mask length byte indicating the location is not defined.
	// As it finds its way into the values of the keys, it must stay zero.
	MlenNoLoc = 0
	// FeaturesKey is a special key storing bitmap what format is used for other keys in DB
	FeaturesKey = "\x00o_features"
	// ResourceRecordsKeyMarker is the prefix for the resource record keys
	ResourceRecordsKeyMarker = "\000o"
)
View Source 
const (
	// InitLocationCount is the initial locationCount for NewRearranger
	InitLocationCount = 2
)
View Source 
const (
	// NUMFIELDS is the number of fields to guarantee upon splitting
	NUMFIELDS = 15
)

Variables

View Source 
var (
	SEP  = []byte(":") // original record separator
	NSEP = []byte(",") // [FB-only] IPv6-friendly record separator
)

two variants of separators

View Source 
var ErrBadMode = errors.New("bad combination of mode/flags")

ErrBadMode is returned when a function is called with unexpected combination of operation settings

View Source 
var ErrBadRType = errors.New("bad record type")

ErrBadRType is an error returned when a record with an invalid type character encountered.

View Source 
var ErrInvalidLocation = errors.New("location should be either nil or exactly 2 bytes long as FBDNS depends on it")

ErrInvalidLocation is used when location doesn't match expectations (nil or exactly 2 bytes)

Functions

func DeriveSerial 

func DeriveSerial(f *os.File) (uint32, error)

func GetSubnets 

func GetSubnets(dataPath string) ([]*net.IPNet, error)

GetSubnets parsed data file in tinydns format and returns all subnets from Net records (prefix %)

func ParseIPNet 

func ParseIPNet(s string) (ipnet *net.IPNet, err error)

ParseIPNet parses a CIDR notation string into a net.IPNet, handling the case when the input is a plain IP address.

func ParseRecords 

func ParseRecords(r io.Reader, codec *Codec, results chan<- Record, workers int) error

ParseRecords parses data from io.Reader and returns results via results chan. Data is parsed in parallel when workers != 1.

func ParseStream 

func ParseStream(r io.Reader, codec *Codec, results chan<- []MapRecord, workers int) error

ParseStream parses data from io.Reader and returns results via results chan. Data is parsed in parallel when workers != 1.

func Putlmaptext 

func Putlmaptext(w io.Writer, m Lmap)

Putlmaptext escapes the map ID and writes it to the writer

func Putloctext 

func Putloctext(w io.Writer, lo Loc)

Putloctext escapes the location ID and writes it to the writer

func Reverseaddr 

func Reverseaddr(ip net.IP) []byte

Reverseaddr returns the in-addr.arpa. or ip6.arpa. hostname of the IP address addr suitable for rDNS (PTR) record lookup or an error if it fails to parse the IP address. (lifted from https://golang.org/src/net/dnsclient.go?m=text)

func WireTypeToTerraformString 

func WireTypeToTerraformString(t WireType) (string, error)

WireTypeToTerraformString converts WireType enum to Terraform type format

Types

type Accum 

type Accum struct {
	NoPrefixSets bool // if set, disables emission of the prefix set records - use with Ranger.Enable()

	Ranger SubnetRanger
	// contains filtered or unexported fields
}

Accum accumulates information about subnets we parsed

func (*Accum) MarshalMap 

func (r *Accum) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Accum) MarshalText 

func (r *Accum) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaller

func (*Accum) OpenScanner 

func (r *Accum) OpenScanner() (s *AccumulatorScanner, err error)

OpenScanner creates scanner through accumulated records note that Accum will remain locked until all records are scanned (Scan returns false)

type AccumulatorScanner 

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

AccumulatorScanner allows lazy reading of lines generated by accumulator

func (AccumulatorScanner) Err 

func (s AccumulatorScanner) Err() error

Err returns error if Scanner met any issues, nil otherwise

func (AccumulatorScanner) Scan 

func (s AccumulatorScanner) Scan() bool

Scan pushes scanner to new line if one exists. In this case result will be true and that line could be read with Text() method

func (AccumulatorScanner) Text 

func (s AccumulatorScanner) Text() string

Text returns current line

type Codec 

type Codec struct {
	Serial       uint32    // default SOA serial
	Acc          Accum     // a meta-record which represents an accumulated state over the whole data set
	NoRnetOutput bool      // if set, disables Rnet ("%"-records) output in the output - use with Acc.Ranger.Enable()
	Features     Rfeatures // a meta-record with features supported by generated DB
}

Codec provides accumulator and serial to construct all records

func (*Codec) ConvertLn 

func (c *Codec) ConvertLn(text []byte) ([]MapRecord, error)

ConvertLn is the main function used to parse line into MapRecords

func (*Codec) DecodeLn 

func (c *Codec) DecodeLn(text []byte) (Record, error)

DecodeLn parses a line without converting

func (*Codec) Preprocess 

func (c *Codec) Preprocess(r io.Reader, w io.Writer) error

Preprocess reads textual data from r and writes an equivalent set - which includes the aggregated records - to w.

type CompositeRecord 

type CompositeRecord interface {
	DerivedRecords() []Record
}

CompositeRecord is the interface implemented by records which are mapped to 2 or more simple records

type Feature 

type Feature uint32

Feature is a bitmap representing different characteristics of DB data 

const (
	// V1KeysFeature if set in features key means V2 keys are available in DB
	//  - natural order zone names used in maps (ex facebook.com.)
	//  - no additional prefix for owner name
	//  - location is added as prefix to owner names
	V1KeysFeature Feature = 1 << iota
	// V2KeysFeature if set in features key means V2 keys are available in DB
	//  - reverse zone names in maps (.com.facebook instead of facebook.com.)
	//  - uses \x00o prefix for owner names
	//  - location is added as suffix to owner names, not as prefix
	V2KeysFeature
)

func DecodeFeatures 

func DecodeFeatures(data []byte) Feature

DecodeFeatures byte array stored in DB to a Feature

type IPv6 

type IPv6 [16]byte

IPv6 is a storage-efficient replacement for net.IP struct net.IP stores IPv6/IPv4 addresses as slices which is really inefficient on 64-bit architecture: * IPv6 takes 40 bytes: 24 bytes slice header + 16 bytes data * IPv4 takes 28 bytes: 24 bytes slice header + 4 bytes data on top of it slice has a reference so it is more expensive for GC handling so this class address that storage inefficiency though delegating a lot of functionality to net.IP class

func FromNetIP 

func FromNetIP(other net.IP) IPv6

FromNetIP performs conversion from net.IP structure to more storage efficient IPv6

func ParseIP 

func ParseIP(s string) IPv6

ParseIP parses string IP representation to the byte structure

func (IPv6) Equal 

func (ip IPv6) Equal(other IPv6) bool

Equal checks equality with another IPv6 object

func (IPv6) EqualToNetIP 

func (ip IPv6) EqualToNetIP(other net.IP) bool

EqualToNetIP checks equality to net.IP object

func (IPv6) MarshalText 

func (ip IPv6) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler

func (IPv6) String 

func (ip IPv6) String() string

String gets string representation of IP

func (IPv6) To4 

func (ip IPv6) To4() net.IP

To4 attempts to extract IPv4 if it possible if not - returns nil

type Lmap 

type Lmap []byte

Lmap is map ID

func (Lmap) String 

func (m Lmap) String() string

type Loc 

type Loc []byte

Loc is location ID

type MapMarshaler 

type MapMarshaler interface {
	MarshalMap() ([]MapRecord, error)
}

MapMarshaler is the interface used in parsing implemented by all record types

type MapRecord 

type MapRecord struct {
	Key   []byte
	Value []byte
}

MapRecord is our main record to represent parsed DNS record

func Parse 

func Parse(r io.Reader, codec *Codec, workers int) ([]MapRecord, error)

Parse parses data from Reader in parallel, wrapping ParseStream

type PreprocReader 

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

PreprocReader is a streaming io.Reader version of preprocessor

func NewPreprocReader 

func NewPreprocReader(r io.Reader, c *Codec) *PreprocReader

NewPreprocReader creates reader that processes input line by line and filters/changes it according to codec settings

func (*PreprocReader) Err 

func (p *PreprocReader) Err() error

Err returns error if reader failed

func (*PreprocReader) Read 

func (p *PreprocReader) Read(buf []byte) (int, error)

Read implements io.Reader interface

func (*PreprocReader) Scan 

func (p *PreprocReader) Scan() bool

Scan pushes Reader to a new line, similar to bufio.Scanner

func (*PreprocReader) Text 

func (p *PreprocReader) Text() string

Text returns current reader line

type Raddr 

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

Raddr is + → A/AAAA

func (*Raddr) DomainName 

func (r *Raddr) DomainName() string

DomainName returns associated record domain name

func (*Raddr) Location 

func (r *Raddr) Location() Loc

Location returns location for which record could be used

func (*Raddr) MarshalMap 

func (r *Raddr) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Raddr) MarshalText 

func (r *Raddr) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Raddr) TTL 

func (r *Raddr) TTL() uint32

TTL returns TTL for the record

func (*Raddr) TerraformValue 

func (r *Raddr) TerraformValue() (string, error)

TerraformValue implements TerraformRecord interface

func (*Raddr) UnmarshalText 

func (r *Raddr) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Raddr) WireType 

func (r *Raddr) WireType() WireType

WireType implements WireRecord interface

type RangePoint 

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

RangePoint stores range point along with associated location ID

func (*RangePoint) LocID 

func (p *RangePoint) LocID() []byte

LocID returns the location ID for this range

func (*RangePoint) LocIsNull 

func (p *RangePoint) LocIsNull() bool

LocIsNull checks if the rangeLocation is a null value (no location defined)

func (*RangePoint) MarshalTextForLmap 

func (p *RangePoint) MarshalTextForLmap(lmap Lmap) (text []byte, err error)

MarshalTextForLmap returns a text representation of these RangePoints, with provided lmap value

func (*RangePoint) MaskLen 

func (p *RangePoint) MaskLen() uint8

MaskLen returns the length of the matched mask

func (*RangePoint) String 

func (p *RangePoint) String() string

String returns a string representation of this location, used for debugging

func (*RangePoint) To16 

func (p *RangePoint) To16() IPv6

To16 returns 16-byte IP representation of the rangeStart

type RangePoints 

type RangePoints []*RangePoint

RangePoints is an array of RangePoint, the only reason for it to exist is the String() method

func (RangePoints) String 

func (r RangePoints) String() string

String returns a string representation of these RangePoints, useful for debugging

type Raux 

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

Raux is : → (anything else)

func (*Raux) DomainName 

func (r *Raux) DomainName() string

DomainName returns associated record domain name

func (*Raux) Location 

func (r *Raux) Location() Loc

Location returns location for which record could be used

func (*Raux) MarshalMap 

func (r *Raux) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Raux) MarshalText 

func (r *Raux) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Raux) TTL 

func (r *Raux) TTL() uint32

TTL returns TTL for the record

func (*Raux) UnmarshalText 

func (r *Raux) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rcname 

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

Rcname is C → CNAME

func (*Rcname) DomainName 

func (r *Rcname) DomainName() string

DomainName returns associated record domain name

func (*Rcname) Location 

func (r *Rcname) Location() Loc

Location returns location for which record could be used

func (*Rcname) MarshalMap 

func (r *Rcname) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rcname) MarshalText 

func (r *Rcname) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rcname) TTL 

func (r *Rcname) TTL() uint32

TTL returns TTL for the record

func (*Rcname) TerraformValue 

func (r *Rcname) TerraformValue() (string, error)

TerraformValue implements TerraformRecord interface

func (*Rcname) UnmarshalText 

func (r *Rcname) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Rcname) WireType 

func (r *Rcname) WireType() WireType

WireType implements WireRecord interface

type Rcsmap 

type Rcsmap Ripmap

Rcsmap is [FB-only] 8 - define an EDNS client subnet-based map

func (*Rcsmap) MarshalMap 

func (r *Rcsmap) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rcsmap) MarshalText 

func (r *Rcsmap) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rcsmap) UnmarshalText 

func (r *Rcsmap) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rdot 

type Rdot struct {
	Rsoa
	Rns
	// contains filtered or unexported fields
}

Rdot is [composite] . → (NS, A, SOA)

func (*Rdot) DerivedRecords 

func (r *Rdot) DerivedRecords() []Record

DerivedRecords implements CompositeRecord interface

func (*Rdot) DomainName 

func (r *Rdot) DomainName() string

DomainName returns associated record domain name

func (*Rdot) Location 

func (r *Rdot) Location() Loc

Location returns location for which record could be used

func (*Rdot) MarshalMap 

func (r *Rdot) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rdot) MarshalText 

func (r *Rdot) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rdot) TTL 

func (r *Rdot) TTL() uint32

TTL returns TTL for the record

func (*Rdot) UnmarshalText 

func (r *Rdot) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rearranger 

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

Rearranger translates IP ranges with associated locations to "Start IP -> LocID" ranges

func NewRearranger 

func NewRearranger(locationCount int) *Rearranger

NewRearranger creates an instance of Rearranger for estimated locationCount

func (*Rearranger) AddLocation 

func (r *Rearranger) AddLocation(ipnet *net.IPNet, locID []byte) error

AddLocation converts the location into a pair of RangePoints, where: * the starting RangePoint is the first IP of the Location, and we immediately know the LocID for this RangePoint * the next RangePoint is the first IP _after_ the end of this Location, so it is marked as rangePointEnd, and the LocID is to be determined

func (*Rearranger) Rearrange 

func (r *Rearranger) Rearrange() RangePoints

Rearrange returns a slice with RangePoints with resolved LocID for finish RangePoint. It also adds implicit "null" locations spanning all unmatched ranges (if necessary).

type Record 

type Record interface {
	encoding.TextUnmarshaler
	encoding.TextMarshaler
	MapMarshaler
}

Record is the interface implemented by all record types

type Rfeatures 

type Rfeatures struct {
	// if true:
	//  - reverse zone names in maps (.com.facebook instead of facebook.com.)
	//  - uses \x00o prefix for owner names
	//  - location is added as suffix to owner names, not as prefix
	UseV2Keys bool
}

Rfeatures [FB-only] - meta record storing set of features supported by current data format

func (*Rfeatures) MarshalMap 

func (r *Rfeatures) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

type Rhttps 

type Rhttps Rsvcb

Rhttps is HTTPS record, which is exactly SVCB but for HTTPS info exchange Type number is different

func (*Rhttps) MarshalMap 

func (r *Rhttps) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rhttps) MarshalText 

func (r *Rhttps) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rhttps) UnmarshalText 

func (r *Rhttps) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Rhttps) WireType 

func (r *Rhttps) WireType() WireType

WireType implements WireRecord interface

type Ripmap 

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

Ripmap is [FB-only] M - define a resolver-based map

func (*Ripmap) MarshalMap 

func (r *Ripmap) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Ripmap) MarshalText 

func (r *Ripmap) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Ripmap) UnmarshalText 

func (r *Ripmap) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rmx 

type Rmx struct {
	Rmx1
	Raddr
	// contains filtered or unexported fields
}

Rmx is [composite] @ → (MX, A)

func (*Rmx) DerivedRecords 

func (r *Rmx) DerivedRecords() []Record

DerivedRecords implements CompositeRecord interface

func (*Rmx) MarshalMap 

func (r *Rmx) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rmx) MarshalText 

func (r *Rmx) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rmx) UnmarshalText 

func (r *Rmx) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rmx1 

type Rmx1 struct {
	// contains filtered or unexported fields
}

Rmx1 is just MX

func (*Rmx1) DomainName 

func (r *Rmx1) DomainName() string

DomainName returns associated record domain name

func (*Rmx1) Location 

func (r *Rmx1) Location() Loc

Location returns location for which record could be used

func (*Rmx1) MarshalMap 

func (r *Rmx1) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rmx1) MarshalText 

func (r *Rmx1) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rmx1) TTL 

func (r *Rmx1) TTL() uint32

TTL returns TTL for the record

func (*Rmx1) TerraformValue 

func (r *Rmx1) TerraformValue() (string, error)

TerraformValue implements TerraformRecord interface

func (*Rmx1) UnmarshalText 

func (r *Rmx1) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Rmx1) WireType 

func (r *Rmx1) WireType() WireType

WireType implements WireRecord interface

type Rnet 

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

Rnet is "%" - Client subnet-to-location record. Used internally by the server to group client/resolver's subnets into locations.

func (*Rnet) MarshalMap 

func (r *Rnet) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rnet) MarshalText 

func (r *Rnet) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rnet) UnmarshalText 

func (r *Rnet) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rns 

type Rns struct {
	Rns1
	Raddr
	// contains filtered or unexported fields
}

Rns is [composite] & → (NS, A)

func (*Rns) DerivedRecords 

func (r *Rns) DerivedRecords() []Record

DerivedRecords implements CompositeRecord interface

func (*Rns) MarshalMap 

func (r *Rns) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rns) MarshalText 

func (r *Rns) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rns) UnmarshalText 

func (r *Rns) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rns1 

type Rns1 struct {
	// contains filtered or unexported fields
}

Rns1 is just NS

func (*Rns1) DomainName 

func (r *Rns1) DomainName() string

DomainName returns associated record domain name

func (*Rns1) Location 

func (r *Rns1) Location() Loc

Location returns location for which record could be used

func (*Rns1) MarshalMap 

func (r *Rns1) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rns1) MarshalText 

func (r *Rns1) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rns1) TTL 

func (r *Rns1) TTL() uint32

TTL returns TTL for the record

func (*Rns1) TerraformValue 

func (r *Rns1) TerraformValue() (string, error)

TerraformValue implements TerraformRecord interface

func (*Rns1) UnmarshalText 

func (r *Rns1) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Rns1) WireType 

func (r *Rns1) WireType() WireType

WireType implements WireRecord interface

type Rpaddr 

type Rpaddr Raddr

Rpaddr is [composite] = → (A/AAAA, PTR)

func (*Rpaddr) DerivedRecords 

func (r *Rpaddr) DerivedRecords() []Record

DerivedRecords implements CompositeRecord interface

func (*Rpaddr) MarshalMap 

func (r *Rpaddr) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rpaddr) MarshalText 

func (r *Rpaddr) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rpaddr) UnmarshalText 

func (r *Rpaddr) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rptr 

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

Rptr is ^ → PTR

func (*Rptr) DomainName 

func (r *Rptr) DomainName() string

DomainName returns associated record domain name

func (*Rptr) Location 

func (r *Rptr) Location() Loc

Location returns location for which record could be used

func (*Rptr) MarshalMap 

func (r *Rptr) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rptr) MarshalText 

func (r *Rptr) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rptr) TTL 

func (r *Rptr) TTL() uint32

TTL returns TTL for the record

func (*Rptr) TerraformValue 

func (r *Rptr) TerraformValue() (string, error)

TerraformValue implements TerraformRecord interface

func (*Rptr) UnmarshalText 

func (r *Rptr) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Rptr) WireType 

func (r *Rptr) WireType() WireType

WireType implements WireRecord interface

type Rrangepoint 

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

Rrangepoint [FB-only] - an internal record type generated from "%" records using the "rearrangement" process

func (*Rrangepoint) MarshalMap 

func (r *Rrangepoint) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rrangepoint) MarshalText 

func (r *Rrangepoint) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rrangepoint) UnmarshalText 

func (r *Rrangepoint) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rsoa 

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

Rsoa is "Z" - SOA record.

func (*Rsoa) DomainName 

func (r *Rsoa) DomainName() string

DomainName returns associated record domain name

func (*Rsoa) Location 

func (r *Rsoa) Location() Loc

Location returns location for which record could be used

func (*Rsoa) MarshalMap 

func (r *Rsoa) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rsoa) MarshalText 

func (r *Rsoa) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rsoa) TTL 

func (r *Rsoa) TTL() uint32

TTL returns TTL for the record

func (*Rsoa) UnmarshalText 

func (r *Rsoa) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Rsoa) WireType 

func (r *Rsoa) WireType() WireType

WireType implements WireRecord interface

type Rsrv 

type Rsrv struct {
	Rsrv1
	Raddr
	// contains filtered or unexported fields
}

Rsrv is [composite] S → (SRV, A)

func (*Rsrv) DerivedRecords 

func (r *Rsrv) DerivedRecords() []Record

DerivedRecords implements CompositeRecord interface

func (*Rsrv) MarshalMap 

func (r *Rsrv) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rsrv) MarshalText 

func (r *Rsrv) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rsrv) UnmarshalText 

func (r *Rsrv) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rsrv1 

type Rsrv1 struct {
	// contains filtered or unexported fields
}

Rsrv1 is just SRV

func (*Rsrv1) DomainName 

func (r *Rsrv1) DomainName() string

DomainName returns associated record domain name

func (*Rsrv1) Location 

func (r *Rsrv1) Location() Loc

Location returns location for which record could be used

func (*Rsrv1) MarshalMap 

func (r *Rsrv1) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rsrv1) MarshalText 

func (r *Rsrv1) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rsrv1) TTL 

func (r *Rsrv1) TTL() uint32

TTL returns TTL for the record

func (*Rsrv1) TerraformValue 

func (r *Rsrv1) TerraformValue() (string, error)

TerraformValue implements TerraformRecord interface

func (*Rsrv1) UnmarshalText 

func (r *Rsrv1) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Rsrv1) WireType 

func (r *Rsrv1) WireType() WireType

WireType implements WireRecord interface

type Rsvcb 

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

Rsvcb is SVCB (service binding) record other SVCB-like records share the same layout as Rsvcb's

func (*Rsvcb) DomainName 

func (r *Rsvcb) DomainName() string

DomainName returns associated record domain name

func (*Rsvcb) Location 

func (r *Rsvcb) Location() Loc

Location returns location for which record could be used

func (*Rsvcb) MarshalMap 

func (r *Rsvcb) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler. It creates a map record for Rsvcb, based on the type of the caller. The map key includes the domain name and location, the value is "rrhead" + RDATA

func (*Rsvcb) MarshalText 

func (r *Rsvcb) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rsvcb) TTL 

func (r *Rsvcb) TTL() uint32

TTL returns TTL for the record

func (*Rsvcb) UnmarshalText 

func (r *Rsvcb) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

type Rtxt 

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

Rtxt is ' → TXT

func (*Rtxt) DomainName 

func (r *Rtxt) DomainName() string

DomainName returns associated record domain name

func (*Rtxt) Location 

func (r *Rtxt) Location() Loc

Location returns location for which record could be used

func (*Rtxt) MarshalMap 

func (r *Rtxt) MarshalMap() ([]MapRecord, error)

MarshalMap implements MapMarshaler

func (*Rtxt) MarshalText 

func (r *Rtxt) MarshalText() (text []byte, err error)

MarshalText implements encoding.TextMarshaler

func (*Rtxt) TTL 

func (r *Rtxt) TTL() uint32

TTL returns TTL for the record

func (*Rtxt) TerraformValue 

func (r *Rtxt) TerraformValue() (string, error)

TerraformValue implements TerraformRecord interface

func (*Rtxt) UnmarshalText 

func (r *Rtxt) UnmarshalText(text []byte) error

UnmarshalText implements encoding.TextUnmarshaler

func (*Rtxt) WireType 

func (r *Rtxt) WireType() WireType

WireType implements WireRecord interface

type Rtype 

type Rtype string

Rtype is record type

type SubnetRanger 

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

SubnetRanger represents an aggregate structure responsible for building the auxiliary structures for the subnet-based location lookup

func (*SubnetRanger) Enable 

func (r *SubnetRanger) Enable()

Enable enables the functionality

func (*SubnetRanger) MarshalMap 

func (r *SubnetRanger) MarshalMap() (result []MapRecord, err error)

MarshalMap implements MapMarshaler

func (*SubnetRanger) OpenScanner 

func (r *SubnetRanger) OpenScanner() (s *SubnetRangerScanner)

OpenScanner creates Scanner which allows lazy reading of subnet range records in a text form

type SubnetRangerScanner 

type SubnetRangerScanner struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

SubnetRangerScanner allows lazy reading of subnet range records in a text form

func (*SubnetRangerScanner) Err 

func (s *SubnetRangerScanner) Err() error

Err returns error if Scanner met any issues, nil otherwise

func (*SubnetRangerScanner) Scan 

func (s *SubnetRangerScanner) Scan() bool

Scan pushes scanner to new line if one exists. In this case result will be true and that line could be read with Text() method

func (*SubnetRangerScanner) SetError 

func (s *SubnetRangerScanner) SetError(err error)

SetError sets error which happened during the scan (if any)

func (*SubnetRangerScanner) Text 

func (s *SubnetRangerScanner) Text() string

Text returns current line

type TerraformRecord 

type TerraformRecord interface {
	WireRecord
	TerraformValue() (string, error)
}

TerraformRecord provides ability to extract value for terraform configuration

type WireRecord 

type WireRecord interface {
	WireType() WireType
	DomainName() string
	Location() Loc
	TTL() uint32
}

WireRecord is the interface implemented by all record types which could be transferred on a wire directly (non-composite or specialized ones)

type WireType 

type WireType uint16

WireType represent DNS wire types 

const (
	// TypeA represents A record type
	TypeA WireType = 1
	// TypeNS represents NS record type
	TypeNS WireType = 2
	// TypeCNAME represents CNAME record type
	TypeCNAME WireType = 5
	// TypeSOA represents SOA record type
	TypeSOA WireType = 6
	// TypePTR represents PTR record type
	TypePTR WireType = 12
	// TypeMX represents MX record type
	TypeMX WireType = 15
	// TypeTXT represents TXT record type
	TypeTXT WireType = 16
	// TypeAAAA represents AAAA record type
	TypeAAAA WireType = 28
	// TypeSRV represents SRV record type
	TypeSRV WireType = 33
	// TypeSVCB represents SVCB record type
	// for SVCB/HTTPS, see https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-svcb-https-08
	TypeSVCB WireType = 64
	// TypeHTTPS represents HTTPS record type
	TypeHTTPS WireType = 65
)

func (WireType) String 

func (w WireType) String() string

Source Files

View all Source files

Directories

Path Synopsis
rdb
dbdiff

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