/
grpc_query_exchange_rate.go
55 lines (42 loc) · 1.62 KB
/
grpc_query_exchange_rate.go
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package keeper
import (
"context"
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/query"
"github.com/konstellation/konstellation/x/oracle/types"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
func (k Keeper) AllExchangeRates(c context.Context, req *types.QueryAllExchangeRatesRequest) (*types.QueryAllExchangeRatesResponse, error) {
if req == nil {
return nil, status.Error(codes.InvalidArgument, "invalid request")
}
var exchangeRates []*types.ExchangeRate
ctx := sdk.UnwrapSDKContext(c)
store := ctx.KVStore(k.storeKey)
exchangeRateStore := prefix.NewStore(store, types.ExchangeRateKeyValue) //types.KeyPrefix(types.ExchangeRateKey))
pageRes, err := query.Paginate(exchangeRateStore, req.Pagination, func(key []byte, value []byte) error {
var exchangeRate types.ExchangeRate
if err := k.cdc.Unmarshal(value, &exchangeRate); err != nil {
return err
}
exchangeRates = append(exchangeRates, &exchangeRate)
return nil
})
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
return &types.QueryAllExchangeRatesResponse{ExchangeRate: exchangeRates, Pagination: pageRes}, nil
}
func (k Keeper) ExchangeRate(c context.Context, req *types.QueryExchangeRateRequest) (*types.QueryExchangeRateResponse, error) {
if req == nil {
return nil, status.Error(codes.InvalidArgument, "invalid request")
}
ctx := sdk.UnwrapSDKContext(c)
ex, found := k.GetExchangeRate(ctx, req.Pair)
if !found {
return &types.QueryExchangeRateResponse{}, nil
}
return &types.QueryExchangeRateResponse{ExchangeRate: &ex}, nil
}