116 lines
3.5 KiB
Go
116 lines
3.5 KiB
Go
package keeper
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import (
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"context"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"github.com/cosmos/cosmos-sdk/store/prefix"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/types/query"
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"github.com/cosmos/cosmos-sdk/x/bank/types"
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)
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var _ types.QueryServer = BaseKeeper{}
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// Balance implements the Query/Balance gRPC method
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func (k BaseKeeper) Balance(ctx context.Context, req *types.QueryBalanceRequest) (*types.QueryBalanceResponse, error) {
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if req == nil {
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return nil, status.Error(codes.InvalidArgument, "empty request")
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}
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if req.Address == "" {
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return nil, status.Error(codes.InvalidArgument, "address cannot be empty")
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}
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if req.Denom == "" {
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return nil, status.Error(codes.InvalidArgument, "invalid denom")
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}
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sdkCtx := sdk.UnwrapSDKContext(ctx)
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address, err := sdk.AccAddressFromBech32(req.Address)
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if err != nil {
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return nil, status.Errorf(codes.InvalidArgument, "invalid address: %s", err.Error())
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}
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balance := k.GetBalance(sdkCtx, address, req.Denom)
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return &types.QueryBalanceResponse{Balance: &balance}, nil
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}
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// AllBalances implements the Query/AllBalances gRPC method
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func (k BaseKeeper) AllBalances(ctx context.Context, req *types.QueryAllBalancesRequest) (*types.QueryAllBalancesResponse, error) {
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if req == nil {
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return nil, status.Error(codes.InvalidArgument, "empty request")
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}
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if req.Address == "" {
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return nil, status.Error(codes.InvalidArgument, "address cannot be empty")
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}
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addr, err := sdk.AccAddressFromBech32(req.Address)
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if err != nil {
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return nil, status.Errorf(codes.InvalidArgument, "invalid address: %s", err.Error())
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}
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sdkCtx := sdk.UnwrapSDKContext(ctx)
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balances := sdk.NewCoins()
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store := sdkCtx.KVStore(k.storeKey)
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balancesStore := prefix.NewStore(store, types.BalancesPrefix)
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accountStore := prefix.NewStore(balancesStore, addr.Bytes())
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pageRes, err := query.Paginate(accountStore, req.Pagination, func(key []byte, value []byte) error {
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var result sdk.Coin
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err := k.cdc.UnmarshalBinaryBare(value, &result)
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if err != nil {
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return err
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}
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balances = append(balances, result)
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return nil
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})
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if err != nil {
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return nil, status.Errorf(codes.InvalidArgument, "paginate: %v", err)
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}
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return &types.QueryAllBalancesResponse{Balances: balances, Pagination: pageRes}, nil
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}
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// TotalSupply implements the Query/TotalSupply gRPC method
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func (k BaseKeeper) TotalSupply(ctx context.Context, _ *types.QueryTotalSupplyRequest) (*types.QueryTotalSupplyResponse, error) {
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sdkCtx := sdk.UnwrapSDKContext(ctx)
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totalSupply := k.GetSupply(sdkCtx).GetTotal()
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return &types.QueryTotalSupplyResponse{Supply: totalSupply}, nil
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}
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// SupplyOf implements the Query/SupplyOf gRPC method
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func (k BaseKeeper) SupplyOf(c context.Context, req *types.QuerySupplyOfRequest) (*types.QuerySupplyOfResponse, error) {
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if req == nil {
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return nil, status.Error(codes.InvalidArgument, "empty request")
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}
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if req.Denom == "" {
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return nil, status.Error(codes.InvalidArgument, "invalid denom")
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}
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ctx := sdk.UnwrapSDKContext(c)
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supply := k.GetSupply(ctx).GetTotal().AmountOf(req.Denom)
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return &types.QuerySupplyOfResponse{Amount: sdk.NewCoin(req.Denom, supply)}, nil
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}
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// Params implements the gRPC service handler for querying x/bank parameters.
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func (k BaseKeeper) Params(ctx context.Context, req *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
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if req == nil {
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return nil, status.Errorf(codes.InvalidArgument, "empty request")
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}
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sdkCtx := sdk.UnwrapSDKContext(ctx)
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params := k.GetParams(sdkCtx)
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return &types.QueryParamsResponse{Params: params}, nil
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}
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