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solana-go
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Merge branch 'master' of github.com:dfuse-io/solana-go

This commit is contained in:
billettc 2020-11-20 14:24:20 -05:00
parent 5fa02f1541 594775726a
commit 31f1d42a77
8 changed files with 163 additions and 73 deletions
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4
.gitignore vendored
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@ -1,2 +1,4 @@
.idea
dist/
dist/
.DS_Store

7
nativetypes.go
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@ -29,7 +29,6 @@ type Padding []byte
type Hash PublicKey
///
type Signature [64]byte
func SignatureFromBase58(in string) (out Signature, err error) {
@ -49,6 +48,7 @@ func SignatureFromBase58(in string) (out Signature, err error) {
func (p Signature) MarshalJSON() ([]byte, error) {
return json.Marshal(base58.Encode(p[:]))
}
func (p *Signature) UnmarshalJSON(data []byte) (err error) {
var s string
err = json.Unmarshal(data, &s)
@ -76,7 +76,6 @@ func (p Signature) String() string {
}
///
type PublicKey [32]byte
func (p PublicKey) Equals(pb PublicKey) bool {
@ -105,6 +104,7 @@ func PublicKeyFromBase58(in string) (out PublicKey, err error) {
func (p PublicKey) MarshalJSON() ([]byte, error) {
return json.Marshal(base58.Encode(p[:]))
}
func (p *PublicKey) UnmarshalJSON(data []byte) (err error) {
var s string
err = json.Unmarshal(data, &s)
@ -132,7 +132,6 @@ func (p PublicKey) String() string {
}
///
type Base58 []byte
func (t Base58) MarshalJSON() ([]byte, error) {
@ -155,7 +154,6 @@ func (t Base58) String() string {
}
///
type Data []byte
func (t Data) MarshalJSON() ([]byte, error) {
@ -190,7 +188,6 @@ func (t Data) String() string {
}
///
type ByteWrapper struct {
io.Reader
}

52
serum/instruction.go
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@ -125,7 +125,7 @@ type NewOrderAccounts struct {
}
type InstructionNewOrder struct {
Side Side
Side uint32
LimitPrice uint64
MaxQuantity uint64
OrderType OrderType
@ -317,53 +317,3 @@ func (i *InstructionCancelOrderByClientId) SetAccounts(accounts []*solana.Accoun
return nil
}
type SideType string
const (
SideLayoutTypeUnknown SideType = "UNKNOWN"
SideLayoutTypeBid SideType = "BID"
SideLayoutTypeAsk SideType = "ASK"
)
type Side uint32
func (s Side) getSide() SideType {
switch s {
case 0:
return SideLayoutTypeBid
case 1:
return SideLayoutTypeAsk
}
return SideLayoutTypeUnknown
}
func (s Side) String() string {
return string(s.getSide())
}
type OrderTypeString string
const (
OrderTypeUnknown OrderTypeString = "UNKNOWN"
OrderTypeLimit OrderTypeString = "LIMIT"
OrderTypeImmediateOrCancel OrderTypeString = "IMMEDIATE_OR_CANCEL"
OrderTypePostOnly OrderTypeString = "POST_ONLY"
)
type OrderType uint32
func (o OrderType) getOrderType() OrderTypeString {
switch o {
case 0:
return OrderTypeLimit
case 1:
return OrderTypeImmediateOrCancel
case 2:
return OrderTypePostOnly
}
return OrderTypeUnknown
}
func (t OrderType) String() string {
return string(t.getOrderType())
}

58
serum/market.go
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@ -39,10 +39,6 @@ func (m *MarketMeta) quoteSplTokenMultiplier() *big.Int {
return solana.DecimalsInBigInt(uint32(m.QuoteMint.Decimals))
}
func divideBnToNumber(numerator, denomiator *big.Float) *big.Float {
return F().Quo(numerator, denomiator)
}
func (m *MarketMeta) PriceLotsToNumber(price *big.Int) *big.Float {
ratio := I().Mul(I().SetInt64(int64(m.MarketV2.QuoteLotSize)), m.baseSplTokenMultiplier())
numerator := F().Mul(F().SetInt(price), F().SetInt(ratio))
@ -64,10 +60,56 @@ func (m *MarketMeta) PriceNumberToLots(price *big.Int) *big.Float {
return F().Quo(F().SetInt(numerator), F().SetInt(denomiator))
}
func I() *big.Int {
return new(big.Int)
type OpenOrdersMeta struct {
OpenOrdersV2 OpenOrdersV2
}
func F() *big.Float {
return new(big.Float)
type Order struct {
Limit *big.Int `json:"limit"`
Side SideLayout `json:"side"`
Price *big.Int `json:"price"`
}
type SideLayoutType string
const (
SideLayoutTypeUnknown SideLayoutType = "UNKNOWN"
SideLayoutTypeBid SideLayoutType = "BID"
SideLayoutTypeAsk SideLayoutType = "ASK"
)
type SideLayout uint32
func (s SideLayout) getSide() SideLayoutType {
switch s {
case 0:
return SideLayoutTypeBid
case 1:
return SideLayoutTypeAsk
}
return SideLayoutTypeUnknown
}
type OrderType string
const (
OrderTypeUnknown OrderType = "UNKNOWN"
OrderTypeLimit OrderType = "LIMIT"
OrderTypeImmediateOrCancel OrderType = "IMMEDIATE_OR_CANCEL"
OrderTypePostOnly OrderType = "POST_ONLY"
)
type OrderTypeLayout uint32
func (o OrderTypeLayout) getOrderType() OrderType {
switch o {
case 0:
return OrderTypeLimit
case 1:
return OrderTypeImmediateOrCancel
case 2:
return OrderTypePostOnly
}
return OrderTypeUnknown
}

15
serum/math.go Normal file
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@ -0,0 +1,15 @@
package serum
import "math/big"
func I() *big.Int {
return new(big.Int)
}
func F() *big.Float {
return new(big.Float)
}
func divideBnToNumber(numerator, denomiator *big.Float) *big.Float {
return F().Quo(numerator, denomiator)
}

15
serum/rpc.go
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@ -43,6 +43,21 @@ func KnownMarket() ([]*MarketMeta, error) {
return markets, nil
}
func FetchOpenOrders(ctx context.Context, rpcCli *rpc.Client, openOrdersAddr solana.PublicKey) (*OpenOrdersMeta, error) {
acctInfo, err := rpcCli.GetAccountInfo(ctx, openOrdersAddr)
if err != nil {
return nil, fmt.Errorf("unable to get open orders account:%w", err)
}
openOrdersMeta := &OpenOrdersMeta{}
if err := openOrdersMeta.OpenOrdersV2.Decode(acctInfo.Value.Data); err != nil {
return nil, fmt.Errorf("decoding market v2: %w", err)
}
return openOrdersMeta, nil
}
func FetchMarket(ctx context.Context, rpcCli *rpc.Client, marketAddr solana.PublicKey) (*MarketMeta, error) {
acctInfo, err := rpcCli.GetAccountInfo(ctx, marketAddr)
if err != nil {

51
serum/rpc_test.go Normal file
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@ -0,0 +1,51 @@
// Copyright 2020 dfuse Platform Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package serum
import (
"context"
"encoding/json"
"fmt"
"os"
"testing"
"github.com/dfuse-io/solana-go/rpc"
"github.com/stretchr/testify/require"
"github.com/dfuse-io/solana-go"
)
func TestFetchMarket(t *testing.T) {
rpcURL := os.Getenv("RPC_URL")
if rpcURL == "" {
t.Skip("Setup 'RPC_URL' to run test")
return
}
client := rpc.NewClient(rpcURL)
ctx := context.Background()
openOrderAdd, err := solana.PublicKeyFromBase58("jFoHUkNDC767PyK11cZM4zyNcpjLqFnSjaqEYp5GVBr")
require.NoError(t, err)
openOrders, err := FetchOpenOrders(ctx, client, openOrderAdd)
require.NoError(t, err)
cnt, err := json.MarshalIndent(openOrders.OpenOrdersV2, "", " ")
require.NoError(t, err)
fmt.Println(string(cnt))
}

34
serum/types.go
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@ -238,14 +238,6 @@ func (q *EventQueue) Decode(data []byte) error {
if err != nil {
return fmt.Errorf("event queue: decode header: %w", err)
}
//remainingData := decoder.Remaining()
//if remainingData%EventDataLength != 0 {
// return fmt.Errorf("event queue: wrong event data length %d", remainingData)
//}
//
//eventCount := remainingData / EventDataLength
for decoder.Remaining() >= 88 {
var e *Event
err = decoder.Decode(&e)
@ -257,3 +249,29 @@ func (q *EventQueue) Decode(data []byte) error {
return nil
}
type OpenOrdersV2 struct {
SerumPadding [5]byte `json:"-"`
AccountFlags bin.Uint64
Market solana.PublicKey
Owner solana.PublicKey
BaseTokenFree bin.Uint64
BaseTokenTotal bin.Uint64
QuoteTokenFree bin.Uint64
QuoteTokenTotal bin.Uint64
FreeSlotBits bin.Uint128
IsBidBits bin.Uint128
Orders [128]bin.Uint128
ClientIDs [128]bin.Uint64
ReferrerRebatesAccrued bin.Uint64
EndPadding [7]byte `json:"-"`
}
func (m *OpenOrdersV2) Decode(in []byte) error {
decoder := bin.NewDecoder(in)
err := decoder.Decode(&m)
if err != nil {
return fmt.Errorf("unpack: %w", err)
}
return nil
}