95 lines
2.8 KiB
Go
95 lines
2.8 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 (q BaseKeeper) Balance(c context.Context, req *types.QueryBalanceRequest) (*types.QueryBalanceResponse, 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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if len(req.Address) == 0 {
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return nil, status.Errorf(codes.InvalidArgument, "invalid address")
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}
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if req.Denom == "" {
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return nil, status.Errorf(codes.InvalidArgument, "invalid denom")
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}
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ctx := sdk.UnwrapSDKContext(c)
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balance := q.GetBalance(ctx, req.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 (q BaseKeeper) AllBalances(c context.Context, req *types.QueryAllBalancesRequest) (*types.QueryAllBalancesResponse, 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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addr := req.Address
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if len(addr) == 0 {
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return nil, status.Errorf(codes.InvalidArgument, "invalid address")
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}
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ctx := sdk.UnwrapSDKContext(c)
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balances := sdk.NewCoins()
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store := ctx.KVStore(q.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 := q.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 &types.QueryAllBalancesResponse{}, 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 (q BaseKeeper) TotalSupply(c context.Context, _ *types.QueryTotalSupplyRequest) (*types.QueryTotalSupplyResponse, error) {
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ctx := sdk.UnwrapSDKContext(c)
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totalSupply := q.GetSupply(ctx).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 (q 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.Errorf(codes.InvalidArgument, "empty request")
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}
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if req.Denom == "" {
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return nil, status.Errorf(codes.InvalidArgument, "invalid denom")
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}
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ctx := sdk.UnwrapSDKContext(c)
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supply := q.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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