/
grpc_query.go
52 lines (40 loc) · 1.61 KB
/
grpc_query.go
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package keeper
import (
"context"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/cosmos/ibc-go/v3/modules/core/05-port/types"
host "github.com/cosmos/ibc-go/v3/modules/core/24-host"
)
var _ types.QueryServer = (*Keeper)(nil)
// AppVersion implements the Query/AppVersion gRPC method
func (q Keeper) AppVersion(c context.Context, req *types.QueryAppVersionRequest) (*types.QueryAppVersionResponse, error) {
if req == nil {
return nil, status.Error(codes.InvalidArgument, "empty request")
}
if err := validategRPCRequest(req.PortId); err != nil {
return nil, err
}
ctx := sdk.UnwrapSDKContext(c)
module, _, err := q.LookupModuleByPort(ctx, req.PortId)
if err != nil {
return nil, status.Errorf(codes.NotFound, sdkerrors.Wrap(err, "could not retrieve module from port-id").Error())
}
ibcModule, found := q.Router.GetRoute(module)
if !found {
return nil, status.Errorf(codes.NotFound, sdkerrors.Wrapf(types.ErrInvalidRoute, "route not found to module: %s", module).Error())
}
version, err := ibcModule.NegotiateAppVersion(ctx, req.Ordering, req.ConnectionId, req.PortId, *req.Counterparty, req.ProposedVersion)
if err != nil {
return nil, status.Errorf(codes.InvalidArgument, sdkerrors.Wrap(err, "version negotation failed").Error())
}
return types.NewQueryAppVersionResponse(req.PortId, version), nil
}
func validategRPCRequest(portID string) error {
if err := host.PortIdentifierValidator(portID); err != nil {
return status.Error(codes.InvalidArgument, err.Error())
}
return nil
}