topoproto

Documentation

Overview

Package topoproto contains utility functions to deal with the proto3 structures defined in proto/topodata.

Index

• Variables
• func IsTypeInList(tabletType pb.TabletType, types []pb.TabletType) bool
• func MakeStringTypeList(types []pb.TabletType) []string
• func ParseKeyspaceShard(param string) (string, string, error)
• func ParseTabletAlias(aliasStr string) (*pb.TabletAlias, error)
• func ParseTabletType(param string) (pb.TabletType, error)
• func ParseUID(value string) (uint32, error)
• func SourceShardAsHTML(source *pb.Shard_SourceShard) template.HTML
• func SourceShardString(source *pb.Shard_SourceShard) string
• func SrvKeyspaceGetPartition(sk *pb.SrvKeyspace, tabletType pb.TabletType) *pb.SrvKeyspace_KeyspacePartition
• func TabletAddr(tablet *pb.Tablet) string
• func TabletAliasEqual(left, right *pb.TabletAlias) bool
• func TabletAliasIsZero(ta *pb.TabletAlias) bool
• func TabletAliasString(ta *pb.TabletAlias) string
• func TabletAliasUIDStr(ta *pb.TabletAlias) string
• func TabletDbName(tablet *pb.Tablet) string
• func TabletIsAssigned(tablet *pb.Tablet) bool
• type ShardReferenceArray
  • func (sra ShardReferenceArray) Len() int
  • func (sra ShardReferenceArray) Less(i, j int) bool
  • func (sra ShardReferenceArray) Sort()
  • func (sra ShardReferenceArray) Swap(i, j int)
• type TabletAliasList
  • func (tal TabletAliasList) Len() int
  • func (tal TabletAliasList) Less(i, j int) bool
  • func (tal TabletAliasList) Swap(i, j int)

Variables

var AllTabletTypes = []pb.TabletType{
	pb.TabletType_MASTER,
	pb.TabletType_REPLICA,
	pb.TabletType_RDONLY,
	pb.TabletType_BATCH,
	pb.TabletType_SPARE,
	pb.TabletType_EXPERIMENTAL,
	pb.TabletType_BACKUP,
	pb.TabletType_RESTORE,
	pb.TabletType_WORKER,
}

AllTabletTypes lists all the possible tablet types

var SlaveTabletTypes = []pb.TabletType{
	pb.TabletType_REPLICA,
	pb.TabletType_RDONLY,
	pb.TabletType_BATCH,
	pb.TabletType_SPARE,
	pb.TabletType_EXPERIMENTAL,
	pb.TabletType_BACKUP,
	pb.TabletType_RESTORE,
	pb.TabletType_WORKER,
}

SlaveTabletTypes contains all the tablet type that can have replication enabled.

Functions

func IsTypeInList

func IsTypeInList(tabletType pb.TabletType, types []pb.TabletType) bool

IsTypeInList returns true if the given type is in the list. Use it with AllTabletType and SlaveTabletType for instance.

func MakeStringTypeList

func MakeStringTypeList(types []pb.TabletType) []string

MakeStringTypeList returns a list of strings that match the input list.

func ParseKeyspaceShard

func ParseKeyspaceShard(param string) (string, string, error)

ParseKeyspaceShard parse a "keyspace/shard" string and extract both keyspace and shard

func ParseTabletAlias

func ParseTabletAlias(aliasStr string) (*pb.TabletAlias, error)

ParseTabletAlias returns a TabletAlias for the input string, of the form <cell>-<uid>

func ParseTabletType

func ParseTabletType(param string) (pb.TabletType, error)

ParseTabletType parses the tablet type into the enum

func ParseUID

func ParseUID(value string) (uint32, error)

ParseUID parses just the uid (a number)

func SourceShardAsHTML

func SourceShardAsHTML(source *pb.Shard_SourceShard) template.HTML

SourceShardAsHTML returns a HTML version of the object.

func SourceShardString

func SourceShardString(source *pb.Shard_SourceShard) string

SourceShardString returns a printable view of a SourceShard.

func SrvKeyspaceGetPartition

func SrvKeyspaceGetPartition(sk *pb.SrvKeyspace, tabletType pb.TabletType) *pb.SrvKeyspace_KeyspacePartition

SrvKeyspaceGetPartition returns a Partition for the given tablet type, or nil if it's not there.

func TabletAddr

func TabletAddr(tablet *pb.Tablet) string

TabletAddr returns hostname:vt port associated with a tablet

func TabletAliasEqual

func TabletAliasEqual(left, right *pb.TabletAlias) bool

TabletAliasEqual returns true if two TabletAlias match

func TabletAliasIsZero

func TabletAliasIsZero(ta *pb.TabletAlias) bool

TabletAliasIsZero returns true iff cell and uid are empty

func TabletAliasString

func TabletAliasString(ta *pb.TabletAlias) string

TabletAliasString formats a TabletAlias

func TabletAliasUIDStr

func TabletAliasUIDStr(ta *pb.TabletAlias) string

TabletAliasUIDStr returns a string version of the uid

func TabletDbName

func TabletDbName(tablet *pb.Tablet) string

TabletDbName is usually implied by keyspace. Having the shard information in the database name complicates mysql replication.

func TabletIsAssigned

func TabletIsAssigned(tablet *pb.Tablet) bool

TabletIsAssigned returns if this tablet is assigned to a keyspace and shard. A "scrap" node will show up as assigned even though its data cannot be used for serving.

Types

type ShardReferenceArray

type ShardReferenceArray []*pb.ShardReference

ShardReferenceArray is used for sorting ShardReference arrays

func (ShardReferenceArray) Len

func (sra ShardReferenceArray) Len() int

Len implements sort.Interface

func (ShardReferenceArray) Less

func (sra ShardReferenceArray) Less(i, j int) bool

Len implements sort.Interface

func (ShardReferenceArray) Sort

func (sra ShardReferenceArray) Sort()

Sort will sort the list according to KeyRange.Start

func (ShardReferenceArray) Swap

func (sra ShardReferenceArray) Swap(i, j int)

Len implements sort.Interface

type TabletAliasList

type TabletAliasList []*pb.TabletAlias

TabletAliasList is used mainly for sorting

func (TabletAliasList) Len

func (tal TabletAliasList) Len() int

Len is part of sort.Interface

func (TabletAliasList) Less

func (tal TabletAliasList) Less(i, j int) bool

Less is part of sort.Interface

func (TabletAliasList) Swap

func (tal TabletAliasList) Swap(i, j int)

Swap is part of sort.Interface