0g-chain/x/pricefeed/keeper/querier.go
Denali Marsh 4599caca07
R4R: update pricefeed module rest endpoints (#359)
* query get price implemented - /pricefeed/price/xrp:usd

* query rawprices implemented - /pricefeed/rawprices/xrp:usd

* refactored to QueryWithMarketIDParams, added rest logic for QueryOracles

* new query get oracles implemented for cli and rest - /pricefeed/oracles/xrp:usd

* tx postprice implemented - /pricefeed/postprice/{MsgPostPrice}

* updated contrib with post-price examples and added to README

* added cliCtx.WithHeight(height) and removed import comment
2020-02-02 11:06:33 -05:00

119 lines
3.4 KiB
Go

package keeper
import (
"fmt"
"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/pricefeed/types"
)
// 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.QueryPrice:
return queryPrice(ctx, req, keeper)
case types.QueryRawPrices:
return queryRawPrices(ctx, req, keeper)
case types.QueryOracles:
return queryOracles(ctx, req, keeper)
case types.QueryMarkets:
return queryMarkets(ctx, req, keeper)
case types.QueryGetParams:
return queryGetParams(ctx, req, keeper)
default:
return nil, sdk.ErrUnknownRequest("unknown pricefeed query endpoint")
}
}
}
func queryPrice(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) (res []byte, sdkErr sdk.Error) {
var requestParams types.QueryWithMarketIDParams
err := keeper.cdc.UnmarshalJSON(req.Data, &requestParams)
if err != nil {
return nil, sdk.ErrInternal(fmt.Sprintf("failed to parse params: %s", err))
}
_, found := keeper.GetMarket(ctx, requestParams.MarketID)
if !found {
return []byte{}, sdk.ErrUnknownRequest("asset not found")
}
currentPrice, sdkErr := keeper.GetCurrentPrice(ctx, requestParams.MarketID)
if sdkErr != nil {
return nil, sdkErr
}
bz, err := codec.MarshalJSONIndent(keeper.cdc, currentPrice)
if err != nil {
panic("could not marshal result to JSON")
}
return bz, nil
}
func queryRawPrices(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) (res []byte, sdkErr sdk.Error) {
var requestParams types.QueryWithMarketIDParams
err := keeper.cdc.UnmarshalJSON(req.Data, &requestParams)
if err != nil {
return nil, sdk.ErrInternal(fmt.Sprintf("failed to parse params: %s", err))
}
_, found := keeper.GetMarket(ctx, requestParams.MarketID)
if !found {
return []byte{}, sdk.ErrUnknownRequest("asset not found")
}
rawPrices := keeper.GetRawPrices(ctx, requestParams.MarketID)
bz, err := codec.MarshalJSONIndent(keeper.cdc, rawPrices)
if err != nil {
panic("could not marshal result to JSON")
}
return bz, nil
}
func queryOracles(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) (res []byte, sdkErr sdk.Error) {
var requestParams types.QueryWithMarketIDParams
err := keeper.cdc.UnmarshalJSON(req.Data, &requestParams)
if err != nil {
return nil, sdk.ErrInternal(fmt.Sprintf("failed to parse params: %s", err))
}
oracles, err := keeper.GetOracles(ctx, requestParams.MarketID)
if err != nil {
return []byte{}, sdk.ErrUnknownRequest("market not found")
}
bz, err := codec.MarshalJSONIndent(keeper.cdc, oracles)
if err != nil {
panic("could not marshal result to JSON")
}
return bz, nil
}
func queryMarkets(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) (res []byte, sdkErr sdk.Error) {
markets := keeper.GetMarkets(ctx)
bz, err := codec.MarshalJSONIndent(keeper.cdc, markets)
if err != nil {
panic("could not marshal result to JSON")
}
return bz, nil
}
// query params in the pricefeed store
func queryGetParams(ctx sdk.Context, req abci.RequestQuery, keeper Keeper) ([]byte, sdk.Error) {
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
}