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proposal_handler.go
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/
proposal_handler.go
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package seele
import (
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
govtypes "github.com/cosmos/cosmos-sdk/x/gov/types"
"github.com/ethereum/go-ethereum/common"
"github.com/Seele-N/Seele/x/seele/keeper"
"github.com/Seele-N/Seele/x/seele/types"
)
// NewTokenMappingChangeProposalHandler creates a new governance Handler for a TokenMappingChangeProposal
func NewTokenMappingChangeProposalHandler(k keeper.Keeper) govtypes.Handler {
return func(ctx sdk.Context, content govtypes.Content) error {
switch c := content.(type) {
case *types.TokenMappingChangeProposal:
if len(c.Contract) == 0 {
// delete existing mapping
k.DeleteExternalContractForDenom(ctx, c.Denom)
} else {
// update the mapping
contract := common.HexToAddress(c.Contract)
k.SetExternalContractForDenom(ctx, c.Denom, contract)
}
return nil
default:
return sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized seele proposal content type: %T", c)
}
}
}