128 lines
3.6 KiB
Go
128 lines
3.6 KiB
Go
// Copyright 2020 dfuse Platform Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package serum
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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rice "github.com/GeertJohan/go.rice"
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bin "github.com/dfuse-io/binary"
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"github.com/dfuse-io/solana-go"
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"github.com/dfuse-io/solana-go/rpc"
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"github.com/dfuse-io/solana-go/rpc/ws"
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"go.uber.org/zap"
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)
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//go:generate rice embed-go
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// TODO: hit the chain and
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func KnownMarket() ([]*MarketMeta, error) {
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box := rice.MustFindBox("data").MustBytes("markets.json")
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if box == nil {
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return nil, fmt.Errorf("unable to retrieve known markets")
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}
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dec := json.NewDecoder(bytes.NewReader(box))
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var markets []*MarketMeta
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err := dec.Decode(&markets)
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if err != nil {
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return nil, fmt.Errorf("unable to decode known markets: %w", err)
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}
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return markets, nil
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}
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func FetchOpenOrders(ctx context.Context, rpcCli *rpc.Client, openOrdersAddr solana.PublicKey) (*OpenOrdersMeta, error) {
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acctInfo, err := rpcCli.GetAccountInfo(ctx, openOrdersAddr)
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if err != nil {
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return nil, fmt.Errorf("unable to get open orders account:%w", err)
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}
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openOrdersMeta := &OpenOrdersMeta{}
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if err := openOrdersMeta.OpenOrders.Decode(acctInfo.Value.Data); err != nil {
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return nil, fmt.Errorf("decoding market v2: %w", err)
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}
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return openOrdersMeta, nil
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}
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func FetchMarket(ctx context.Context, rpcCli *rpc.Client, marketAddr solana.PublicKey) (*MarketMeta, error) {
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acctInfo, err := rpcCli.GetAccountInfo(ctx, marketAddr)
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if err != nil {
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return nil, fmt.Errorf("unable to get market account:%w", err)
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}
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meta := &MarketMeta{
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Address: marketAddr,
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}
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dataLen := len(acctInfo.Value.Data)
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switch dataLen {
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// case 380:
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// // if err := meta.MarketV1.Decode(acctInfo.Value.Data); err != nil {
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// // return nil, fmt.Errorf("decoding market v1: %w", err)
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// // }
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// return nil, fmt.Errorf("Unsupported market version, w/ data length of 380")
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case 388:
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if err := meta.MarketV2.Decode(acctInfo.Value.Data); err != nil {
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return nil, fmt.Errorf("decoding market v2: %w", err)
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}
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default:
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return nil, fmt.Errorf("unsupported market data length: %d", dataLen)
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}
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if err := rpcCli.GetAccountDataIn(ctx, meta.MarketV2.QuoteMint, &meta.QuoteMint); err != nil {
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return nil, fmt.Errorf("getting quote mint: %w", err)
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}
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if err := rpcCli.GetAccountDataIn(ctx, meta.MarketV2.BaseMint, &meta.BaseMint); err != nil {
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return nil, fmt.Errorf("getting base token: %w", err)
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}
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return meta, nil
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}
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func StreamOpenOrders(client *ws.Client) error {
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sub, err := client.ProgramSubscribe(DEXProgramIDV2, rpc.CommitmentSingleGossip)
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if err != nil {
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return fmt.Errorf("unable to subscribe to programID %q: %w", DEXProgramIDV2, err)
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}
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count := 0
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for {
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d, err := sub.Recv()
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if err != nil {
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return fmt.Errorf("received error from programID subscription: %w", err)
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}
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res := d.(*ws.ProgramResult)
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var f *AccountFlag
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err = bin.NewDecoder(res.Value.Account.Data).Decode(&f)
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if err != nil {
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fmt.Println("***********************************", err)
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zlog.Debug("unable to decoce account flag for account... skipping",
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zap.Stringer("account_address", res.Value.PubKey),
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)
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continue
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}
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fmt.Printf("%d - %s\n", count, f.String())
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count++
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}
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}
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