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msg_server.go
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/
msg_server.go
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package keeper
import (
"context"
"fmt"
errorsmod "cosmossdk.io/errors"
sdk "github.com/cosmos/cosmos-sdk/types"
govtypes "github.com/cosmos/cosmos-sdk/x/gov/types"
transfertypes "github.com/cosmos/ibc-go/v6/modules/apps/transfer/types"
channeltypes "github.com/cosmos/ibc-go/v6/modules/core/04-channel/types"
"github.com/cvn-network/cvn/v2/x/claims/types"
)
// UpdateParams implements the gRPC MsgServer interface. When an UpdateParams
// proposal passes, it updates the module parameters. The update can only be
// performed if the requested authority is the Cosmos SDK governance module
// account.
func (k *Keeper) UpdateParams(goCtx context.Context, req *types.MsgUpdateParams) (*types.MsgUpdateParamsResponse, error) {
if k.authority.String() != req.Authority {
return nil, errorsmod.Wrapf(govtypes.ErrInvalidSigner, "invalid authority; expected %s, got %s", k.authority.String(), req.Authority)
}
ctx := sdk.UnwrapSDKContext(goCtx)
// Validate the requested authorized channels
for _, channelID := range req.Params.AuthorizedChannels {
if err := checkIfChannelOpen(ctx, k.channelKeeper, channelID); err != nil {
return nil, errorsmod.Wrapf(err, "invalid authorized channel")
}
}
// Validate the requested EVM channels
for _, channelID := range req.Params.EVMChannels {
if err := checkIfChannelOpen(ctx, k.channelKeeper, channelID); err != nil {
return nil, errorsmod.Wrapf(err, "invalid evm channel")
}
}
if err := k.SetParams(ctx, req.Params); err != nil {
return nil, err
}
return &types.MsgUpdateParamsResponse{}, nil
}
// checkIfChannelOpen checks if an IBC channel with the given channel id is registered
// in the channel keeper and is in the OPEN state. It also requires the channel id to
// be in a valid format.
//
// NOTE: this function is looking for a channel with the default transfer port id and will fail
// if no channel with the given channel id has an open connection to this port.
func checkIfChannelOpen(ctx sdk.Context, ck types.ChannelKeeper, channelID string) error {
channel, found := ck.GetChannel(ctx, transfertypes.PortID, channelID)
if !found {
return fmt.Errorf(
"trying to add a channel to the claims module's available channels parameters, when it is not found in the app's IBCKeeper.ChannelKeeper: %s",
channelID,
)
}
if channel.State != channeltypes.OPEN {
return fmt.Errorf(
"trying to add a channel to the claims module's available channels parameters, when it is not in the OPEN state: %s",
channelID,
)
}
return nil
}