package keeper import ( "context" "google.golang.org/grpc/codes" "google.golang.org/grpc/status" "github.com/cosmos/cosmos-sdk/client" sdk "github.com/cosmos/cosmos-sdk/types" sdkerrors "github.com/cosmos/cosmos-sdk/types/errors" "github.com/cosmos/cosmos-sdk/types/query" "github.com/kava-labs/kava/x/savings/types" ) type queryServer struct { keeper Keeper } // NewQueryServerImpl creates a new server for handling gRPC queries. func NewQueryServerImpl(k Keeper) types.QueryServer { return &queryServer{keeper: k} } var _ types.QueryServer = queryServer{} // Params implements the gRPC service handler for querying x/savings parameters. func (s queryServer) Params(c context.Context, req *types.QueryParamsRequest) (*types.QueryParamsResponse, error) { if req == nil { return nil, status.Errorf(codes.InvalidArgument, "empty request") } sdkCtx := sdk.UnwrapSDKContext(c) params := s.keeper.GetParams(sdkCtx) return &types.QueryParamsResponse{Params: params}, nil } func (s queryServer) Deposits(ctx context.Context, req *types.QueryDepositsRequest) (*types.QueryDepositsResponse, error) { if req == nil { return nil, status.Errorf(codes.InvalidArgument, "empty request") } sdkCtx := sdk.UnwrapSDKContext(ctx) hasDenom := len(req.Denom) > 0 hasOwner := len(req.Owner) > 0 var owner sdk.AccAddress var err error if hasOwner { owner, err = sdk.AccAddressFromBech32(req.Owner) if err != nil { return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, err.Error()) } } var deposits types.Deposits switch { case hasOwner && hasDenom: deposit, found := s.keeper.GetDeposit(sdkCtx, owner) if found { for _, coin := range deposit.Amount { if coin.Denom == req.Denom { deposits = append(deposits, deposit) } } } case hasOwner: deposit, found := s.keeper.GetDeposit(sdkCtx, owner) if found { deposits = append(deposits, deposit) } case hasDenom: s.keeper.IterateDeposits(sdkCtx, func(deposit types.Deposit) (stop bool) { if deposit.Amount.AmountOf(req.Denom).IsPositive() { deposits = append(deposits, deposit) } return false }) default: s.keeper.IterateDeposits(sdkCtx, func(deposit types.Deposit) (stop bool) { deposits = append(deposits, deposit) return false }) } page, limit, err := query.ParsePagination(req.Pagination) if err != nil { return nil, err } start, end := client.Paginate(len(deposits), page, limit, 100) if start < 0 || end < 0 { deposits = types.Deposits{} } else { deposits = deposits[start:end] } return &types.QueryDepositsResponse{ Deposits: deposits, Pagination: nil, }, nil }