host

package
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 Go to latest Published: Nov 10, 2023 License: MIT Imports: 6 Imported by: 183

Documentation

Overview

24-host is an implementation of ICS 24.

The storage path supported are defined in ICS 24 (https://github.com/cosmos/ibc/blob/master/spec/core/ics-024-host-requirements#path-space).

Hostname validation is implemented as defined in ICS 24 (https://github.com/cosmos/ibc/tree/master/spec/core/ics-024-host-requirements).

Index

Constants

View Source 
const (
	KeyClientState             = "clientState"
	KeyConsensusStatePrefix    = "consensusStates"
	KeyConnectionPrefix        = "connections"
	KeyChannelEndPrefix        = "channelEnds"
	KeyChannelPrefix           = "channels"
	KeyPortPrefix              = "ports"
	KeySequencePrefix          = "sequences"
	KeyChannelCapabilityPrefix = "capabilities"
	KeyNextSeqSendPrefix       = "nextSequenceSend"
	KeyNextSeqRecvPrefix       = "nextSequenceRecv"
	KeyNextSeqAckPrefix        = "nextSequenceAck"
	KeyPacketCommitmentPrefix  = "commitments"
	KeyPacketAckPrefix         = "acks"
	KeyPacketReceiptPrefix     = "receipts"
)

KVStore key prefixes for IBC

View Source 
const DefaultMaxCharacterLength = 64

DefaultMaxCharacterLength defines the default maximum character length used in validation of identifiers including the client, connection, port and channel identifiers.

NOTE: this restriction is specific to this golang implementation of IBC. If your use case demands a higher limit, please open an issue and we will consider adjusting this restriction.

View Source 
const SubModuleName = "host"

SubModuleName defines the ICS 24 host

Variables

View Source 
var (
	ErrInvalidID     = errorsmod.Register(SubModuleName, 2, "invalid identifier")
	ErrInvalidPath   = errorsmod.Register(SubModuleName, 3, "invalid path")
	ErrInvalidPacket = errorsmod.Register(SubModuleName, 4, "invalid packet")
)

IBC client sentinel errors

View Source 
var DefaultMaxPortCharacterLength = 128

DefaultMaxPortCharacterLength defines the default maximum character length used in validation of port identifiers.

View Source 
var IsValidID = regexp.MustCompile(`^[a-zA-Z0-9\.\_\+\-\#\[\]\<\>]+$`).MatchString

IsValidID defines regular expression to check if the string consist of characters in one of the following categories only: - Alphanumeric - `.`, `_`, `+`, `-`, `#` - `[`, `]`, `<`, `>`

View Source 
var (
	KeyClientStorePrefix = []byte("clients")
)

KVStore key prefixes for IBC

Functions

func ChannelCapabilityPath 

func ChannelCapabilityPath(portID, channelID string) string

ChannelCapabilityPath defines the path under which capability keys associated with a channel are stored

func ChannelIdentifierValidator 

func ChannelIdentifierValidator(id string) error

ChannelIdentifierValidator is the default validator function for Channel identifiers. A valid Identifier must be between 8-64 characters and only contain alphanumeric and some allowed special characters (see IsValidID).

func ChannelKey 

func ChannelKey(portID, channelID string) []byte

ChannelKey returns the store key for a particular channel

func ChannelPath 

func ChannelPath(portID, channelID string) string

ChannelPath defines the path under which channels are stored

func ClientConnectionsKey 

func ClientConnectionsKey(clientID string) []byte

ClientConnectionsKey returns the store key for the connections of a given client

func ClientConnectionsPath 

func ClientConnectionsPath(clientID string) string

ClientConnectionsPath defines a reverse mapping from clients to a set of connections

func ClientIdentifierValidator 

func ClientIdentifierValidator(id string) error

ClientIdentifierValidator is the default validator function for Client identifiers. A valid Identifier must be between 9-64 characters and only contain alphanumeric and some allowed special characters (see IsValidID).

func ClientStateKey 

func ClientStateKey() []byte

ClientStateKey returns a store key under which a particular client state is stored in a client prefixed store

func ConnectionIdentifierValidator 

func ConnectionIdentifierValidator(id string) error

ConnectionIdentifierValidator is the default validator function for Connection identifiers. A valid Identifier must be between 10-64 characters and only contain alphanumeric and some allowed special characters (see IsValidID).

func ConnectionKey 

func ConnectionKey(connectionID string) []byte

ConnectionKey returns the store key for a particular connection

func ConnectionPath 

func ConnectionPath(connectionID string) string

ConnectionPath defines the path under which connection paths are stored

func ConsensusStateKey 

func ConsensusStateKey(height exported.Height) []byte

ConsensusStateKey returns the store key for a the consensus state of a particular client stored in a client prefixed store.

func ConsensusStatePath 

func ConsensusStatePath(height exported.Height) string

ConsensusStatePath returns the suffix store key for the consensus state at a particular height stored in a client prefixed store.

func FullClientKey 

func FullClientKey(clientID string, path []byte) []byte

FullClientKey returns the full path of specific client path in the format: "clients/{clientID}/{path}" as a byte array.

func FullClientPath 

func FullClientPath(clientID string, path string) string

FullClientPath returns the full path of a specific client path in the format: "clients/{clientID}/{path}" as a string.

func FullClientStateKey 

func FullClientStateKey(clientID string) []byte

FullClientStateKey takes a client identifier and returns a Key under which to store a particular client state.

func FullClientStatePath 

func FullClientStatePath(clientID string) string

FullClientStatePath takes a client identifier and returns a Path under which to store a particular client state

func FullConsensusStateKey 

func FullConsensusStateKey(clientID string, height exported.Height) []byte

FullConsensusStateKey returns the store key for the consensus state of a particular client.

func FullConsensusStatePath 

func FullConsensusStatePath(clientID string, height exported.Height) string

FullConsensusStatePath takes a client identifier and returns a Path under which to store the consensus state of a client.

func MustParseChannelPath 

func MustParseChannelPath(path string) (string, string)

MustParseChannelPath returns the port and channel ID from a full path. Panics if the provided path is invalid.

func MustParseClientStatePath 

func MustParseClientStatePath(path string) string

MustParseClientStatePath returns the client ID from a client state path. It panics if the provided path is invalid or if the clientID is empty.

func MustParseConnectionPath 

func MustParseConnectionPath(path string) string

MustParseConnectionPath returns the connection ID from a full path. Panics if the provided path is invalid.

func NextSequenceAckKey 

func NextSequenceAckKey(portID, channelID string) []byte

NextSequenceAckKey returns the store key for the acknowledgement sequence of a particular channel binded to a specific port.

func NextSequenceAckPath 

func NextSequenceAckPath(portID, channelID string) string

NextSequenceAckPath defines the next acknowledgement sequence counter store path

func NextSequenceRecvKey 

func NextSequenceRecvKey(portID, channelID string) []byte

NextSequenceRecvKey returns the store key for the receive sequence of a particular channel binded to a specific port

func NextSequenceRecvPath 

func NextSequenceRecvPath(portID, channelID string) string

NextSequenceRecvPath defines the next receive sequence counter store path.

func NextSequenceSendKey 

func NextSequenceSendKey(portID, channelID string) []byte

NextSequenceSendKey returns the store key for the send sequence of a particular channel binded to a specific port.

func NextSequenceSendPath 

func NextSequenceSendPath(portID, channelID string) string

NextSequenceSendPath defines the next send sequence counter store path

func PacketAcknowledgementKey 

func PacketAcknowledgementKey(portID, channelID string, sequence uint64) []byte

PacketAcknowledgementKey returns the store key of under which a packet acknowledgement is stored

func PacketAcknowledgementPath 

func PacketAcknowledgementPath(portID, channelID string, sequence uint64) string

PacketAcknowledgementPath defines the packet acknowledgement store path

func PacketAcknowledgementPrefixPath 

func PacketAcknowledgementPrefixPath(portID, channelID string) string

PacketAcknowledgementPrefixPath defines the prefix for commitments to packet data fields store path.

func PacketCommitmentKey 

func PacketCommitmentKey(portID, channelID string, sequence uint64) []byte

PacketCommitmentKey returns the store key of under which a packet commitment is stored

func PacketCommitmentPath 

func PacketCommitmentPath(portID, channelID string, sequence uint64) string

PacketCommitmentPath defines the commitments to packet data fields store path

func PacketCommitmentPrefixPath 

func PacketCommitmentPrefixPath(portID, channelID string) string

PacketCommitmentPrefixPath defines the prefix for commitments to packet data fields store path.

func PacketReceiptKey 

func PacketReceiptKey(portID, channelID string, sequence uint64) []byte

PacketReceiptKey returns the store key of under which a packet receipt is stored

func PacketReceiptPath 

func PacketReceiptPath(portID, channelID string, sequence uint64) string

PacketReceiptPath defines the packet receipt store path

func ParseChannelPath 

func ParseChannelPath(path string) (string, string, error)

ParseChannelPath returns the port and channel ID from a full path. It returns an error if the provided path is invalid.

func ParseConnectionPath 

func ParseConnectionPath(path string) (string, error)

ParseConnectionPath returns the connection ID from a full path. It returns an error if the provided path is invalid.

func ParseIdentifier 

func ParseIdentifier(identifier, prefix string) (uint64, error)

ParseIdentifier parses the sequence from the identifier using the provided prefix. This function does not need to be used by counterparty chains. SDK generated connection and channel identifiers are required to use this format.

func PortIdentifierValidator 

func PortIdentifierValidator(id string) error

PortIdentifierValidator is the default validator function for Port identifiers. A valid Identifier must be between 2-64 characters and only contain alphanumeric and some allowed special characters (see IsValidID).

func PortPath 

func PortPath(portID string) string

PortPath defines the path under which ports paths are stored on the capability module

func PrefixedClientStoreKey 

func PrefixedClientStoreKey(prefix []byte) []byte

PrefixedClientStoreKey returns a key which can be used for prefixed key store iteration. The prefix may be a clientType, clientID, or any valid key prefix which may be concatenated with the client store constant.

func PrefixedClientStorePath 

func PrefixedClientStorePath(prefix []byte) string

PrefixedClientStorePath returns a key path which can be used for prefixed key store iteration. The prefix may be a clientType, clientID, or any valid key prefix which may be concatenated with the client store constant.

Types

type ValidateFn 

type ValidateFn func(string) error

ValidateFn function type to validate path and identifier bytestrings

func NewPathValidator 

func NewPathValidator(idValidator ValidateFn) ValidateFn

NewPathValidator takes in a Identifier Validator function and returns a Path Validator function which requires path to consist of `/`-separated valid identifiers, where a valid identifier is between 1-64 characters, contains only alphanumeric and some allowed special characters (see IsValidID), and satisfies the custom `idValidator` function.

Source Files

View all Source files

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