0g-chain/x/auction/keeper/querier.go

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package keeper
import (
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/kava-labs/kava/x/auction/types"
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)
// NewQuerier is the module level router for state queries
func NewQuerier(keeper Keeper) sdk.Querier {
return func(ctx sdk.Context, path []string, req abci.RequestQuery) (res []byte, err sdk.Error) {
switch path[0] {
case types.QueryGetAuction:
return queryAuction(ctx, req, keeper)
case types.QueryGetAuctions:
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return queryAuctions(ctx, req, keeper)
case types.QueryGetParams:
return queryGetParams(ctx, req, keeper)
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default:
return nil, sdk.ErrUnknownRequest("unknown auction query endpoint")
}
}
}
func queryAuction(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
// Decode request
var requestParams types.QueryAuctionParams
err := keeper.cdc.UnmarshalJSON(req.Data, &requestParams)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
// Lookup auction
auction, found := keeper.GetAuction(ctx, requestParams.AuctionID)
if !found {
return nil, types.ErrAuctionNotFound(types.DefaultCodespace, requestParams.AuctionID)
}
// Encode results
bz, err := codec.MarshalJSONIndent(keeper.cdc, auction)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}
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func queryAuctions(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
// Get all auctions
auctionsList := types.Auctions{}
keeper.IterateAuctions(ctx, func(a types.Auction) bool {
auctionsList = append(auctionsList, a)
return false
})
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// Encode Results
bz, err := codec.MarshalJSONIndent(keeper.cdc, auctionsList)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
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}
return bz, nil
}
// query params in the auction store
func queryGetParams(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
// Get params
params := keeper.GetParams(ctx)
// Encode results
bz, err := codec.MarshalJSONIndent(keeper.cdc, params)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}