Mukan Erkin Törük
88dd97a9f8
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54 lines
1.9 KiB
Go
54 lines
1.9 KiB
Go
package solomachine
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import (
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"reflect"
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errorsmod "cosmossdk.io/errors"
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storetypes "cosmossdk.io/store/types"
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"git.cw.tr/mukan-network/mukan-sdk/codec"
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sdk "git.cw.tr/mukan-network/mukan-sdk/types"
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clienttypes "git.cw.tr/mukan-network/mukan-ibc/modules/core/02-client/types"
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"git.cw.tr/mukan-network/mukan-ibc/modules/core/exported"
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)
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// CheckSubstituteAndUpdateState verifies that the subject is allowed to be updated by
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// a governance proposal and that the substitute client is a solo machine.
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// It will update the consensus state to the substitute's consensus state and
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// the sequence to the substitute's current sequence. An error is returned if
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// the client has been disallowed to be updated by a governance proposal,
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// the substitute is not a solo machine, or the current public key equals
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// the new public key.
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func (cs ClientState) CheckSubstituteAndUpdateState(
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ctx sdk.Context, cdc codec.BinaryCodec, subjectClientStore,
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_ storetypes.KVStore, substituteClient exported.ClientState,
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) error {
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substituteClientState, ok := substituteClient.(*ClientState)
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if !ok {
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return errorsmod.Wrapf(clienttypes.ErrInvalidClientType, "substitute client state type %T, expected %T", substituteClient, &ClientState{})
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}
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subjectPublicKey, err := cs.ConsensusState.GetPubKey()
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if err != nil {
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return errorsmod.Wrap(err, "failed to get consensus public key")
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}
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substitutePublicKey, err := substituteClientState.ConsensusState.GetPubKey()
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if err != nil {
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return errorsmod.Wrap(err, "failed to get substitute client public key")
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}
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if reflect.DeepEqual(subjectPublicKey, substitutePublicKey) {
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return errorsmod.Wrapf(clienttypes.ErrInvalidHeader, "subject and substitute have the same public key")
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}
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// update to substitute parameters
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cs.Sequence = substituteClientState.Sequence
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cs.ConsensusState = substituteClientState.ConsensusState
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cs.IsFrozen = false
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setClientState(subjectClientStore, cdc, &cs)
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return nil
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}
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