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connection.go
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connection.go
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package types
import (
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
commitmenttypes "github.com/cosmos/ibc-go/v4/modules/core/23-commitment/types"
host "github.com/cosmos/ibc-go/v4/modules/core/24-host"
"github.com/cosmos/ibc-go/v4/modules/core/exported"
)
var _ exported.ConnectionI = (*ConnectionEnd)(nil)
// NewConnectionEnd creates a new ConnectionEnd instance.
func NewConnectionEnd(state State, clientID string, counterparty Counterparty, versions []*Version, delayPeriod uint64) ConnectionEnd {
return ConnectionEnd{
ClientId: clientID,
Versions: versions,
State: state,
Counterparty: counterparty,
DelayPeriod: delayPeriod,
}
}
// GetState implements the Connection interface
func (c ConnectionEnd) GetState() int32 {
return int32(c.State)
}
// GetClientID implements the Connection interface
func (c ConnectionEnd) GetClientID() string {
return c.ClientId
}
// GetCounterparty implements the Connection interface
func (c ConnectionEnd) GetCounterparty() exported.CounterpartyConnectionI {
return c.Counterparty
}
// GetVersions implements the Connection interface
func (c ConnectionEnd) GetVersions() []exported.Version {
return ProtoVersionsToExported(c.Versions)
}
// GetDelayPeriod implements the Connection interface
func (c ConnectionEnd) GetDelayPeriod() uint64 {
return c.DelayPeriod
}
// ValidateBasic implements the Connection interface.
// NOTE: the protocol supports that the connection and client IDs match the
// counterparty's.
func (c ConnectionEnd) ValidateBasic() error {
if err := host.ClientIdentifierValidator(c.ClientId); err != nil {
return sdkerrors.Wrap(err, "invalid client ID")
}
if len(c.Versions) == 0 {
return sdkerrors.Wrap(sdkerrors.ErrInvalidVersion, "empty connection versions")
}
for _, version := range c.Versions {
if err := ValidateVersion(version); err != nil {
return err
}
}
return c.Counterparty.ValidateBasic()
}
var _ exported.CounterpartyConnectionI = (*Counterparty)(nil)
// NewCounterparty creates a new Counterparty instance.
func NewCounterparty(clientID, connectionID string, prefix commitmenttypes.MerklePrefix) Counterparty {
return Counterparty{
ClientId: clientID,
ConnectionId: connectionID,
Prefix: prefix,
}
}
// GetClientID implements the CounterpartyConnectionI interface
func (c Counterparty) GetClientID() string {
return c.ClientId
}
// GetConnectionID implements the CounterpartyConnectionI interface
func (c Counterparty) GetConnectionID() string {
return c.ConnectionId
}
// GetPrefix implements the CounterpartyConnectionI interface
func (c Counterparty) GetPrefix() exported.Prefix {
return &c.Prefix
}
// ValidateBasic performs a basic validation check of the identifiers and prefix
func (c Counterparty) ValidateBasic() error {
if c.ConnectionId != "" {
if err := host.ConnectionIdentifierValidator(c.ConnectionId); err != nil {
return sdkerrors.Wrap(err, "invalid counterparty connection ID")
}
}
if err := host.ClientIdentifierValidator(c.ClientId); err != nil {
return sdkerrors.Wrap(err, "invalid counterparty client ID")
}
if c.Prefix.Empty() {
return sdkerrors.Wrap(ErrInvalidCounterparty, "counterparty prefix cannot be empty")
}
return nil
}
// NewIdentifiedConnection creates a new IdentifiedConnection instance
func NewIdentifiedConnection(connectionID string, conn ConnectionEnd) IdentifiedConnection {
return IdentifiedConnection{
Id: connectionID,
ClientId: conn.ClientId,
Versions: conn.Versions,
State: conn.State,
Counterparty: conn.Counterparty,
DelayPeriod: conn.DelayPeriod,
}
}
// ValidateBasic performs a basic validation of the connection identifier and connection fields.
func (ic IdentifiedConnection) ValidateBasic() error {
if err := host.ConnectionIdentifierValidator(ic.Id); err != nil {
return sdkerrors.Wrap(err, "invalid connection ID")
}
connection := NewConnectionEnd(ic.State, ic.ClientId, ic.Counterparty, ic.Versions, ic.DelayPeriod)
return connection.ValidateBasic()
}