remove GetFrozenHeight from ClientState interface

CHANGELOG.md

@@ -45,6 +45,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### API Breaking
 
+* (module/core/02-client) [\#165](https://github.com/cosmos/ibc-go/pull/165) Remove GetFrozenHeight from the ClientState interface. 
 * (modules) [\#166](https://github.com/cosmos/ibc-go/pull/166) Remove GetHeight from the misbehaviour interface. The `consensus_height` attribute has been removed from Misbehaviour events.
 * (modules) [\#162](https://github.com/cosmos/ibc-go/pull/162) Remove deprecated Handler types in core IBC and the ICS 20 transfer module. 
 * (modules/core) [\#161](https://github.com/cosmos/ibc-go/pull/161) Remove Type(), Route(), GetSignBytes() from 02-client, 03-connection, and 04-channel messages.

modules/core/exported/client.go

@@ -44,7 +44,6 @@ type ClientState interface {
 
 	ClientType() string
 	GetLatestHeight() Height
-	GetFrozenHeight() Height
 	Validate() error
 	GetProofSpecs() []*ics23.ProofSpec
 

modules/light-clients/06-solomachine/types/client_state.go

@@ -57,13 +57,6 @@ func (cs ClientState) IsFrozen() bool {
 	return cs.FrozenSequence != 0
 }
 
-// GetFrozenHeight returns the frozen sequence of the client.
-// Return exported.Height to satisfy interface
-// Revision number is always 0 for a solo-machine
-func (cs ClientState) GetFrozenHeight() exported.Height {
-	return clienttypes.NewHeight(0, cs.FrozenSequence)
-}
-
 // GetProofSpecs returns nil proof specs since client state verification uses signatures.
 func (cs ClientState) GetProofSpecs() []*ics23.ProofSpec {
 	return nil

modules/light-clients/07-tendermint/types/client_state.go

@@ -88,12 +88,6 @@ func (cs ClientState) Status(
 	return exported.Active
 }
 
-// GetFrozenHeight returns the height at which client is frozen
-// NOTE: FrozenHeight is zero if client is unfrozen
-func (cs ClientState) GetFrozenHeight() exported.Height {
-	return cs.FrozenHeight
-}
-
 // IsExpired returns whether or not the client has passed the trusting period since the last
 // update (in which case no headers are considered valid).
 func (cs ClientState) IsExpired(latestTimestamp, now time.Time) bool {

modules/light-clients/07-tendermint/types/proposal_handle_test.go

@@ -319,7 +319,7 @@ func (suite *TendermintTestSuite) TestCheckSubstituteAndUpdateState() {
 
 			if tc.expPass {
 				suite.Require().NoError(err)
-				suite.Require().Equal(clienttypes.ZeroHeight(), updatedClient.GetFrozenHeight())
+				suite.Require().Equal(clienttypes.ZeroHeight(), updatedClient.(*types.ClientState).FrozenHeight)
 			} else {
 				suite.Require().Error(err)
 				suite.Require().Nil(updatedClient)

modules/light-clients/09-localhost/types/client_state.go

@@ -49,11 +49,6 @@ func (cs ClientState) Status(_ sdk.Context, _ sdk.KVStore, _ codec.BinaryCodec,
 	return exported.Active
 }
 
-// GetFrozenHeight returns an uninitialized IBC Height.
-func (cs ClientState) GetFrozenHeight() exported.Height {
-	return clienttypes.ZeroHeight()
-}
-
 // Validate performs a basic validation of the client state fields.
 func (cs ClientState) Validate() error {
 	if strings.TrimSpace(cs.ChainId) == "" {