solana-dex-parser
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Solana Dex Transaction Parser
640 lines (626 loc) • 33.3 kB
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<h1><a href="../../index.html">All files</a> / <a href="index.html">src/parsers</a> parser-moonshot.ts</h1>
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<span class="strong">6.32% </span>
<span class="quiet">Statements</span>
<span class='fraction'>5/79</span>
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<span class="strong">0% </span>
<span class="quiet">Branches</span>
<span class='fraction'>0/39</span>
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<span class="strong">0% </span>
<span class="quiet">Functions</span>
<span class='fraction'>0/22</span>
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<span class="strong">6.57% </span>
<span class="quiet">Lines</span>
<span class='fraction'>5/76</span>
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<pre><table class="coverage">
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import { DEX_PROGRAMS, DISCRIMINATORS, TOKENS } from '../constants';
import { convertToUiAmount, DexInfo, TokenAmount, TradeInfo, TradeType, TransferData } from '../types';
import { absBigInt, getInstructionData } from '../utils';
import { TransactionAdapter } from '../transaction-adapter';
import { TransactionUtils } from '../transaction-utils';
export class MoonshotParser {
private readonly utils: TransactionUtils;
<span class="fstat-no" title="function not covered" > constructor(</span>
private readonly <span class="cstat-no" title="statement not covered" >adapter: TransactionAdapter,</span>
private readonly <span class="cstat-no" title="statement not covered" >dexInfo: DexInfo,</span>
private readonly <span class="cstat-no" title="statement not covered" >transferActions: Record<string, TransferData[]></span>
) {
<span class="cstat-no" title="statement not covered" > this.utils = new TransactionUtils(adapter);</span>
}
public <span class="fstat-no" title="function not covered" >processTrades(</span>): TradeInfo[] {
const trades: TradeInfo[] = <span class="cstat-no" title="statement not covered" >[];</span>
const instructions = <span class="cstat-no" title="statement not covered" >this.adapter.instructions;</span>
<span class="cstat-no" title="statement not covered" > instructions.forEach(<span class="fstat-no" title="function not covered" >(i</span>nstruction: any, index: number) => {</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (this.isTradeInstruction(instruction)) {</span>
<span class="cstat-no" title="statement not covered" > trades.push(...this.processInstructionTrades(instruction, index));</span>
}
});
<span class="cstat-no" title="statement not covered" > return trades;</span>
}
public <span class="fstat-no" title="function not covered" >processInstructionTrades(</span>instruction: any, outerIndex: number): TradeInfo[] {
const trades: TradeInfo[] = <span class="cstat-no" title="statement not covered" >[];</span>
// outer instruction
const instructions = <span class="cstat-no" title="statement not covered" >this.adapter.instructions;</span>
<span class="cstat-no" title="statement not covered" > trades.push(</span>
...instructions
.filter(<span class="fstat-no" title="function not covered" >(i</span>nstruction: any, index: number) => <span class="cstat-no" title="statement not covered" >outerIndex == index && this.isTradeInstruction(instruction))</span>
.map(<span class="fstat-no" title="function not covered" >(i</span>nstruction: any, index: any) => <span class="cstat-no" title="statement not covered" >this.parseTradeInstruction(instruction, `${outerIndex}-${index}`))</span>
.filter(<span class="fstat-no" title="function not covered" >(t</span>ransfer: any): transfer is TradeInfo => <span class="cstat-no" title="statement not covered" >transfer !== null)</span>
);
// inner instruction
const innerInstructions = <span class="cstat-no" title="statement not covered" >this.adapter.innerInstructions;</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (innerInstructions) {</span>
<span class="cstat-no" title="statement not covered" > trades.push(</span>
...innerInstructions
.filter(<span class="fstat-no" title="function not covered" >(s</span>et) => <span class="cstat-no" title="statement not covered" >set.index === outerIndex)</span>
.flatMap(<span class="fstat-no" title="function not covered" >(s</span>et) =>
<span class="cstat-no" title="statement not covered" > set.instructions</span>
.map(<span class="fstat-no" title="function not covered" >(i</span>nstruction, index) => <span class="cstat-no" title="statement not covered" >this.parseTradeInstruction(instruction, `${outerIndex}-${index}`))</span>
.filter(<span class="fstat-no" title="function not covered" >(t</span>ransfer): transfer is TradeInfo => <span class="cstat-no" title="statement not covered" >transfer !== null)</span>
)
);
}
<span class="cstat-no" title="statement not covered" > return trades;</span>
}
public <span class="fstat-no" title="function not covered" >isTradeInstruction(</span>instruction: any): boolean {
const programId = <span class="cstat-no" title="statement not covered" >this.adapter.getInstructionProgramId(instruction);</span>
const accounts = <span class="cstat-no" title="statement not covered" >this.adapter.getInstructionAccounts(instruction);</span>
<span class="cstat-no" title="statement not covered" > return programId == DEX_PROGRAMS.MOONSHOT.id && accounts && accounts.length === 11;</span>
}
private <span class="fstat-no" title="function not covered" >detectCollateralMint(</span>accountKeys: string[]): string {
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (accountKeys.some(<span class="fstat-no" title="function not covered" >(k</span>ey) => <span class="cstat-no" title="statement not covered" >key == TOKENS.USDC)</span>) {</span>
<span class="cstat-no" title="statement not covered" > return TOKENS.USDC;</span>
}
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (accountKeys.some(<span class="fstat-no" title="function not covered" >(k</span>ey) => <span class="cstat-no" title="statement not covered" >key == TOKENS.USDT)</span>) {</span>
<span class="cstat-no" title="statement not covered" > return TOKENS.USDT;</span>
}
<span class="cstat-no" title="statement not covered" > return TOKENS.SOL;</span>
}
private <span class="fstat-no" title="function not covered" >parseTradeInstruction(</span>instruction: any, idx: string): TradeInfo | null {
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (!('data' in instruction)) <span class="cstat-no" title="statement not covered" >return null;</span></span>
const data = <span class="cstat-no" title="statement not covered" >getInstructionData(instruction);</span>
const discriminator = <span class="cstat-no" title="statement not covered" >data.slice(0, 8);</span>
let tradeType: TradeType;
<span class="cstat-no" title="statement not covered" > if (discriminator.equals(DISCRIMINATORS.MOONSHOT.BUY)) {</span>
<span class="cstat-no" title="statement not covered" > tradeType = 'BUY';</span>
} else <span class="cstat-no" title="statement not covered" >if (discriminator.equals(DISCRIMINATORS.MOONSHOT.SELL)) {</span>
<span class="cstat-no" title="statement not covered" > tradeType = 'SELL';</span>
} else {
<span class="cstat-no" title="statement not covered" > return null;</span>
}
const moonshotTokenMint = <span class="cstat-no" title="statement not covered" >this.adapter.getInstructionAccounts(instruction)[6];</span> // meme
const accountKeys = <span class="cstat-no" title="statement not covered" >this.adapter.accountKeys;</span>
const collateralMint = <span class="cstat-no" title="statement not covered" >this.detectCollateralMint(accountKeys);</span>
const { tokenAmount, collateralAmount } = <span class="cstat-no" title="statement not covered" >this.calculateAmounts(moonshotTokenMint, collateralMint);</span>
<span class="cstat-no" title="statement not covered" > return this.createTradeInfo(tradeType, tokenAmount, collateralAmount, moonshotTokenMint, collateralMint, idx);</span>
}
private <span class="fstat-no" title="function not covered" >calculateAmounts(</span>tokenMint: string, collateralMint: string) {
const tokenBalanceChanges = <span class="cstat-no" title="statement not covered" >this.getTokenBalanceChanges(tokenMint);</span>
const collateralBalanceChanges = <span class="cstat-no" title="statement not covered" >this.getTokenBalanceChanges(collateralMint);</span>
<span class="cstat-no" title="statement not covered" > return {</span>
tokenAmount: this.createTokenAmount(absBigInt(tokenBalanceChanges), tokenMint),
collateralAmount: this.createTokenAmount(absBigInt(collateralBalanceChanges), collateralMint),
};
}
private <span class="fstat-no" title="function not covered" >createTradeInfo(</span>
tradeType: TradeType,
tokenAmount: TokenAmount,
collateralAmount: TokenAmount,
moonshotTokenMint: string,
collateralMint: string,
idx: string
): TradeInfo {
const trade: TradeInfo = <span class="cstat-no" title="statement not covered" >{</span>
type: tradeType,
inputToken: {
mint: tradeType == 'BUY' ? collateralMint : moonshotTokenMint,
amount: tradeType == 'BUY' ? collateralAmount.uiAmount : tokenAmount.uiAmount,
decimals: tradeType == 'BUY' ? collateralAmount.decimals : tokenAmount.decimals,
},
outputToken: {
mint: tradeType == 'BUY' ? moonshotTokenMint : collateralMint,
amount: tradeType == 'BUY' ? tokenAmount.uiAmount : collateralAmount.uiAmount,
decimals: tradeType == 'BUY' ? tokenAmount.decimals : collateralAmount.decimals,
},
user: this.adapter.signer,
programId: DEX_PROGRAMS.MOONSHOT.id,
amm: DEX_PROGRAMS.MOONSHOT.name,
route: this.dexInfo.route || '',
slot: this.adapter.slot,
timestamp: this.adapter.blockTime,
signature: this.adapter.signature,
idx,
};
<span class="cstat-no" title="statement not covered" > return this.utils.attachTokenTransferInfo(trade, this.transferActions);</span>
}
private <span class="fstat-no" title="function not covered" >getTokenBalanceChanges(</span>mint: string): bigint {
const signer = <span class="cstat-no" title="statement not covered" >this.adapter.signer;</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (mint == TOKENS.SOL) {</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (!this.adapter.postBalances?.[0] || !this.adapter.preBalances?.[0]) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error('Insufficient balance information for SOL');</span>
}
<span class="cstat-no" title="statement not covered" > return BigInt(this.adapter.postBalances[0] - this.adapter.preBalances[0]);</span>
}
let preAmount = <span class="cstat-no" title="statement not covered" >BigInt(0);</span>
let postAmount = <span class="cstat-no" title="statement not covered" >BigInt(0);</span>
let balanceFound = <span class="cstat-no" title="statement not covered" >false;</span>
<span class="cstat-no" title="statement not covered" > this.adapter.preTokenBalances?.forEach(<span class="fstat-no" title="function not covered" >(p</span>reBalance) => {</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (preBalance.mint == mint && preBalance.owner == signer) {</span>
<span class="cstat-no" title="statement not covered" > preAmount = BigInt(preBalance.uiTokenAmount.amount);</span>
<span class="cstat-no" title="statement not covered" > balanceFound = true;</span>
}
});
<span class="cstat-no" title="statement not covered" > this.adapter.postTokenBalances?.forEach(<span class="fstat-no" title="function not covered" >(p</span>ostBalance) => {</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (postBalance.mint == mint && postBalance.owner == signer) {</span>
<span class="cstat-no" title="statement not covered" > postAmount = BigInt(postBalance.uiTokenAmount.amount);</span>
<span class="cstat-no" title="statement not covered" > balanceFound = true;</span>
}
});
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (!balanceFound) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error('Could not find balance for specified mint and signer');</span>
}
<span class="cstat-no" title="statement not covered" > return postAmount - preAmount;</span>
}
private <span class="fstat-no" title="function not covered" >createTokenAmount(</span>amount: bigint, mint: string): TokenAmount {
const decimals = <span class="cstat-no" title="statement not covered" >this.adapter.getTokenDecimals(mint);</span>
<span class="cstat-no" title="statement not covered" > return {</span>
amount,
uiAmount: convertToUiAmount(amount, decimals),
decimals,
};
}
}
</pre></td></tr></table></pre>
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