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feat: clean up pricefeed code

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This commit is contained in:
Kevin Davis 2020-04-06 09:56:59 -04:00
parent fd39cea7a5
commit a6031172a1
6 changed files with 176 additions and 62 deletions
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58
x/pricefeed/alias.go
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@ -1,8 +1,8 @@
// nolint
// autogenerated code using github.com/rigelrozanski/multitool
// aliases generated for the following subdirectories:
// ALIASGEN: github.com/kava-labs/kava/x/pricefeed/types/
// ALIASGEN: github.com/kava-labs/kava/x/pricefeed/keeper/
// ALIASGEN: github.com/kava-labs/kava/x/pricefeed/keeper
// ALIASGEN: github.com/kava-labs/kava/x/pricefeed/types
package pricefeed
import (
@ -31,48 +31,54 @@ const (
RouterKey = types.RouterKey
QuerierRoute = types.QuerierRoute
DefaultParamspace = types.DefaultParamspace
RawPriceFeedPrefix = types.RawPriceFeedPrefix
CurrentPricePrefix = types.CurrentPricePrefix
MarketPrefix = types.MarketPrefix
OraclePrefix = types.OraclePrefix
TypeMsgPostPrice = types.TypeMsgPostPrice
QueryPrice = types.QueryPrice
QueryRawPrices = types.QueryRawPrices
QueryGetParams = types.QueryGetParams
QueryMarkets = types.QueryMarkets
QueryOracles = types.QueryOracles
QueryRawPrices = types.QueryRawPrices
QueryPrice = types.QueryPrice
)
var (
// functions aliases
RegisterCodec = types.RegisterCodec
ErrEmptyInput = types.ErrEmptyInput
ErrExpired = types.ErrExpired
ErrNoValidPrice = types.ErrNoValidPrice
ErrInvalidMarket = types.ErrInvalidMarket
ErrInvalidOracle = types.ErrInvalidOracle
NewGenesisState = types.NewGenesisState
DefaultGenesisState = types.DefaultGenesisState
NewMsgPostPrice = types.NewMsgPostPrice
NewParams = types.NewParams
DefaultParams = types.DefaultParams
ParamKeyTable = types.ParamKeyTable
NewKeeper = keeper.NewKeeper
NewQuerier = keeper.NewQuerier
NewKeeper = keeper.NewKeeper
NewQuerier = keeper.NewQuerier
RegisterCodec = types.RegisterCodec
ErrEmptyInput = types.ErrEmptyInput
ErrExpired = types.ErrExpired
ErrNoValidPrice = types.ErrNoValidPrice
ErrInvalidMarket = types.ErrInvalidMarket
ErrInvalidOracle = types.ErrInvalidOracle
NewGenesisState = types.NewGenesisState
DefaultGenesisState = types.DefaultGenesisState
CurrentPriceKey = types.CurrentPriceKey
RawPriceKey = types.RawPriceKey
NewCurrentPrice = types.NewCurrentPrice
NewPostedPrice = types.NewPostedPrice
NewMsgPostPrice = types.NewMsgPostPrice
NewParams = types.NewParams
DefaultParams = types.DefaultParams
ParamKeyTable = types.ParamKeyTable
NewQueryWithMarketIDParams = types.NewQueryWithMarketIDParams
// variable aliases
ModuleCdc = types.ModuleCdc
KeyMarkets = types.KeyMarkets
DefaultMarkets = types.DefaultMarkets
ModuleCdc = types.ModuleCdc
CurrentPricePrefix = types.CurrentPricePrefix
RawPriceFeedPrefix = types.RawPriceFeedPrefix
KeyMarkets = types.KeyMarkets
DefaultMarkets = types.DefaultMarkets
)
type (
Keeper = keeper.Keeper
GenesisState = types.GenesisState
Market = types.Market
Markets = types.Markets
CurrentPrice = types.CurrentPrice
PostedPrice = types.PostedPrice
PostedPrices = types.PostedPrices
SortDecs = types.SortDecs
MsgPostPrice = types.MsgPostPrice
Params = types.Params
QueryWithMarketIDParams = types.QueryWithMarketIDParams
Keeper = keeper.Keeper
)

38
x/pricefeed/keeper/keeper.go
View File

@ -58,13 +58,9 @@ func (k Keeper) SetPrice(
}
// set the price for that particular oracle
if found {
prices[index] = types.PostedPrice{
MarketID: marketID, OracleAddress: oracle,
Price: price, Expiry: expiry}
prices[index] = types.NewPostedPrice(marketID, oracle, price, expiry)
} else {
prices = append(prices, types.PostedPrice{
MarketID: marketID, OracleAddress: oracle,
Price: price, Expiry: expiry})
prices = append(prices, types.NewPostedPrice(marketID, oracle, price, expiry))
index = len(prices) - 1
}
@ -79,7 +75,7 @@ func (k Keeper) SetPrice(
),
)
store.Set(
[]byte(types.RawPriceFeedPrefix+marketID), k.cdc.MustMarshalBinaryBare(prices),
types.RawPriceKey(marketID), k.cdc.MustMarshalBinaryBare(prices),
)
return prices[index], nil
}
@ -101,20 +97,17 @@ func (k Keeper) SetCurrentPrices(ctx sdk.Context, marketID string) sdk.Error {
}
prices := k.GetRawPrices(ctx, marketID)
var notExpiredPrices []types.CurrentPrice
var notExpiredPrices types.CurrentPrices
// filter out expired prices
for _, v := range prices {
if v.Expiry.After(ctx.BlockTime()) {
notExpiredPrices = append(notExpiredPrices, types.CurrentPrice{
MarketID: v.MarketID,
Price: v.Price,
})
notExpiredPrices = append(notExpiredPrices, types.NewCurrentPrice(v.MarketID, v.Price))
}
}
if len(notExpiredPrices) == 0 {
store := ctx.KVStore(k.key)
store.Set(
[]byte(types.CurrentPricePrefix+marketID), k.cdc.MustMarshalBinaryBare(types.CurrentPrice{}),
types.CurrentPriceKey(marketID), k.cdc.MustMarshalBinaryBare(types.CurrentPrice{}),
)
return types.ErrNoValidPrice(k.codespace)
}
@ -135,20 +128,17 @@ func (k Keeper) SetCurrentPrices(ctx sdk.Context, marketID string) sdk.Error {
}
store := ctx.KVStore(k.key)
currentPrice := types.CurrentPrice{
MarketID: marketID,
Price: medianPrice,
}
currentPrice := types.NewCurrentPrice(marketID, medianPrice)
store.Set(
[]byte(types.CurrentPricePrefix+marketID), k.cdc.MustMarshalBinaryBare(currentPrice),
types.CurrentPriceKey(marketID), k.cdc.MustMarshalBinaryBare(currentPrice),
)
return nil
}
// CalculateMedianPrice calculates the median prices for the input prices.
func (k Keeper) CalculateMedianPrice(ctx sdk.Context, prices []types.CurrentPrice) sdk.Dec {
func (k Keeper) CalculateMedianPrice(ctx sdk.Context, prices types.CurrentPrices) sdk.Dec {
l := len(prices)
if l == 1 {
@ -169,7 +159,7 @@ func (k Keeper) CalculateMedianPrice(ctx sdk.Context, prices []types.CurrentPric
}
func (k Keeper) calculateMeanPrice(ctx sdk.Context, prices []types.CurrentPrice) sdk.Dec {
func (k Keeper) calculateMeanPrice(ctx sdk.Context, prices types.CurrentPrices) sdk.Dec {
sum := prices[0].Price.Add(prices[1].Price)
mean := sum.Quo(sdk.NewDec(2))
return mean
@ -178,7 +168,7 @@ func (k Keeper) calculateMeanPrice(ctx sdk.Context, prices []types.CurrentPrice)
// GetCurrentPrice fetches the current median price of all oracles for a specific market
func (k Keeper) GetCurrentPrice(ctx sdk.Context, marketID string) (types.CurrentPrice, sdk.Error) {
store := ctx.KVStore(k.key)
bz := store.Get([]byte(types.CurrentPricePrefix + marketID))
bz := store.Get(types.CurrentPriceKey(marketID))
if bz == nil {
return types.CurrentPrice{}, types.ErrNoValidPrice(k.codespace)
@ -192,10 +182,10 @@ func (k Keeper) GetCurrentPrice(ctx sdk.Context, marketID string) (types.Current
}
// GetRawPrices fetches the set of all prices posted by oracles for an asset
func (k Keeper) GetRawPrices(ctx sdk.Context, marketID string) []types.PostedPrice {
func (k Keeper) GetRawPrices(ctx sdk.Context, marketID string) types.PostedPrices {
store := ctx.KVStore(k.key)
bz := store.Get([]byte(types.RawPriceFeedPrefix + marketID))
var prices []types.PostedPrice
bz := store.Get(types.RawPriceKey(marketID))
var prices types.PostedPrices
k.cdc.MustUnmarshalBinaryBare(bz, &prices)
return prices
}

23
x/pricefeed/simulation/decoder.go
View File

@ -1,12 +1,31 @@
package simulation
import (
"bytes"
"fmt"
"github.com/cosmos/cosmos-sdk/codec"
cmn "github.com/tendermint/tendermint/libs/common"
"github.com/kava-labs/kava/x/pricefeed/types"
)
// DecodeStore unmarshals the KVPair's Value to the corresponding pricefeed type
func DecodeStore(cdc *codec.Codec, kvA, kvB cmn.KVPair) string {
// TODO implement this
return ""
switch {
case bytes.Contains(kvA.Key[:1], []byte(types.CurrentPricePrefix)):
var priceA, priceB types.CurrentPrice
cdc.MustUnmarshalBinaryBare(kvA.Value, &priceA)
cdc.MustUnmarshalBinaryBare(kvB.Value, &priceB)
return fmt.Sprintf("%s\n%s", priceA, priceB)
case bytes.Contains(kvA.Key[:1], []byte(types.RawPriceFeedPrefix)):
var postedPriceA, postedPriceB types.PostedPrices
cdc.MustUnmarshalBinaryBare(kvA.Value, &postedPriceA)
cdc.MustUnmarshalBinaryBare(kvB.Value, &postedPriceB)
return fmt.Sprintf("%s\n%s", postedPriceA, postedPriceB)
default:
panic(fmt.Sprintf("invalid %s key prefix %X", types.ModuleName, kvA.Key[:1]))
}
}

63
x/pricefeed/simulation/decoder_test.go Normal file
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@ -0,0 +1,63 @@
package simulation_test
import (
"fmt"
"testing"
"time"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/kava-labs/kava/app"
"github.com/kava-labs/kava/x/pricefeed/simulation"
"github.com/kava-labs/kava/x/pricefeed/types"
"github.com/stretchr/testify/suite"
cmn "github.com/tendermint/tendermint/libs/common"
tmtime "github.com/tendermint/tendermint/types/time"
)
type decoderTest struct {
name string
expectedLog string
}
type DecoderTestSuite struct {
suite.Suite
tests []decoderTest
}
func makeTestCodec() (cdc *codec.Codec) {
cdc = codec.New()
sdk.RegisterCodec(cdc)
codec.RegisterCrypto(cdc)
types.RegisterCodec(cdc)
return
}
func (suite *DecoderTestSuite) TestDecodeStore() {
cdc := makeTestCodec()
price := types.NewCurrentPrice("bnb:usd", sdk.MustNewDecFromStr("12.0"))
_, addrs := app.GeneratePrivKeyAddressPairs(1)
rawPrices := types.PostedPrices{
types.NewPostedPrice("bnb:usd", addrs[0], sdk.MustNewDecFromStr("12.0"), tmtime.Now().Add(time.Hour*2)),
}
kvPairs := cmn.KVPairs{
cmn.KVPair{Key: types.CurrentPriceKey("bnb:usd"), Value: cdc.MustMarshalBinaryBare(price)},
cmn.KVPair{Key: types.RawPriceKey("bnb:usd"), Value: cdc.MustMarshalBinaryBare(rawPrices)},
}
decoderTests := []decoderTest{
decoderTest{"current price", fmt.Sprintf("%s\n%s", price, price)},
decoderTest{"raw prices", fmt.Sprintf("%s\n%s", rawPrices, rawPrices)},
}
for i, t := range decoderTests {
suite.Run(t.name, func() {
suite.Equal(t.expectedLog, simulation.DecodeStore(cdc, kvPairs[i], kvPairs[i]))
})
}
}
func TestDecoderTestSuite(t *testing.T) {
suite.Run(t, new(DecoderTestSuite))
}

26
x/pricefeed/types/key.go
View File

@ -15,16 +15,22 @@ const (
// DefaultParamspace default namestore
DefaultParamspace = ModuleName
)
var (
// CurrentPricePrefix prefix for the current price of an asset
CurrentPricePrefix = []byte{0x00}
// RawPriceFeedPrefix prefix for the raw pricefeed of an asset
RawPriceFeedPrefix = StoreKey + ":raw:"
// CurrentPricePrefix prefix for the current price of an asset
CurrentPricePrefix = StoreKey + ":currentprice:"
// MarketPrefix Prefix for the assets in the pricefeed system
MarketPrefix = StoreKey + ":markets"
// OraclePrefix store prefix for the oracle accounts
OraclePrefix = StoreKey + ":oracles"
RawPriceFeedPrefix = []byte{0x01}
)
// CurrentPriceKey returns the prefix for the current price
func CurrentPriceKey(marketID string) []byte {
return append(CurrentPricePrefix, []byte(marketID)...)
}
// RawPriceKey returns the prefix for the raw price
func RawPriceKey(marketID string) []byte {
return append(RawPriceFeedPrefix, []byte(marketID)...)
}

30
x/pricefeed/types/market.go
View File

@ -46,6 +46,14 @@ type CurrentPrice struct {
Price sdk.Dec `json:"price" yaml:"price"`
}
// NewCurrentPrice returns an instance of CurrentPrice
func NewCurrentPrice(marketID string, price sdk.Dec) CurrentPrice {
return CurrentPrice{MarketID: marketID, Price: price}
}
// CurrentPrices type for an array of CurrentPrice
type CurrentPrices []CurrentPrice
// PostedPrice price for market posted by a specific oracle
type PostedPrice struct {
MarketID string `json:"market_id" yaml:"market_id"`
@ -54,6 +62,19 @@ type PostedPrice struct {
Expiry time.Time `json:"expiry" yaml:"expiry"`
}
// NewPostedPrice returns a new PostedPrice
func NewPostedPrice(marketID string, oracle sdk.AccAddress, price sdk.Dec, expiry time.Time) PostedPrice {
return PostedPrice{
MarketID: marketID,
OracleAddress: oracle,
Price: price,
Expiry: expiry,
}
}
// PostedPrices type for an array of PostedPrice
type PostedPrices []PostedPrice
// implement fmt.Stringer
func (cp CurrentPrice) String() string {
return strings.TrimSpace(fmt.Sprintf(`Market ID: %s
@ -68,6 +89,15 @@ Price: %s
Expiry: %s`, pp.MarketID, pp.OracleAddress, pp.Price, pp.Expiry))
}
// String implements fmt.Stringer
func (ps PostedPrices) String() string {
out := "Posted Prices:\n"
for _, p := range ps {
out += fmt.Sprintf("%s\n", p.String())
}
return strings.TrimSpace(out)
}
// SortDecs provides the interface needed to sort sdk.Dec slices
type SortDecs []sdk.Dec