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grpc_query.go
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/
grpc_query.go
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package keeper
import (
"context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/query"
rizon "github.com/rizon-world/rizon/types"
"github.com/rizon-world/rizon/x/treasury/types"
)
type Querier struct {
Keeper
}
var _ types.QueryServer = Querier{}
// Currencies queries all supported currency denom list
func (k Querier) Currencies(c context.Context, req *types.QueryCurrenciesRequest) (*types.QueryCurrenciesResponse, error) {
ctx := sdk.UnwrapSDKContext(c)
store := k.Keeper.Store(ctx)
currencyStore := prefix.NewStore(store, types.CurrencyPrefix)
var denoms []string
pageRes, err := query.Paginate(currencyStore, req.Pagination, func(_, value []byte) error {
var currency types.Currency
err := k.cdc.Unmarshal(value, ¤cy)
if err != nil {
return err
}
denoms = append(denoms, currency.Denom)
return nil
})
if err != nil {
return nil, status.Errorf(codes.InvalidArgument, "paginate: %v", err)
}
currencies := types.NewCurrencies(denoms)
return &types.QueryCurrenciesResponse{
Currencies: ¤cies,
Pagination: pageRes,
}, nil
}
// Currency queries an information of a currency
func (k Querier) Currency(c context.Context, req *types.QueryCurrencyRequest) (*types.QueryCurrencyResponse, error) {
if req == nil {
return nil, status.Error(codes.InvalidArgument, "empty request")
}
if req.Denom == "" {
return nil, status.Error(codes.InvalidArgument, "denom cannot be empty")
}
// check whether denom is valid
if err := sdk.ValidateDenom(req.Denom); err != nil {
return nil, status.Error(codes.InvalidArgument, "invalid denom")
}
ctx := sdk.UnwrapSDKContext(c)
res := k.Keeper.GetCurrency(ctx, req.Denom)
return &types.QueryCurrencyResponse{Currency: &res}, nil
}
// MaxAtoloSupply queries maximum mintable amount of atolo
func (k Querier) MaxAtoloSupply(c context.Context, _ *types.QueryMaxRequest) (*types.QueryMaxResponse, error) {
maxSupply := types.NewMaxAtoloSupply(rizon.RizonMaxSupply)
return &types.QueryMaxResponse{MaxAtoloSupply: maxSupply}, nil
}
// Params queries the parameters of treasury
func (k Querier) Params(c context.Context, _ *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
ctx := sdk.UnwrapSDKContext(c)
params := k.Keeper.GetParams(ctx)
return &types.QueryParamsResponse{Params: params}, nil
}