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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 | 1x 1x 1x 1x 1x | import { DEX_PROGRAMS, DISCRIMINATORS, TOKENS } from '../constants';
import { TransactionAdapter } from '../transaction-adapter';
import { TransactionUtils } from '../transaction-utils';
import { PoolEvent, PoolEventType, TransferData, convertToUiAmount } from '../types';
import { getInstructionData } from '../utils';
// Base parser class with shared utilities
abstract class BaseMeteoraParser {
protected readonly utils: TransactionUtils;
constructor(protected readonly adapter: TransactionAdapter) {
this.utils = new TransactionUtils(adapter);
}
protected getInstructionId(index: number, innerIndex?: number): string {
return innerIndex === undefined ? index.toString() : `${index}-${innerIndex}`;
}
protected parseTransfers(instruction: any, index: number, innerIndex?: number): TransferData[] {
const curIdx = this.getInstructionId(index, innerIndex);
const accounts = this.adapter.getInstructionAccounts(instruction);
return this.utils
.processTransferInstructions(index)
.filter((transfer) => accounts.includes(transfer.info.destination) && transfer.idx >= curIdx);
}
abstract getPoolAction(data: Buffer): any | PoolEventType | null;
abstract parseInstruction(instruction: any, index: number, innerIndex?: number): PoolEvent | null;
}
// Main parser for Meteora liquidity events
export class MeteoraLiquidityParser {
private readonly utils: TransactionUtils;
constructor(private readonly adapter: TransactionAdapter) {
this.utils = new TransactionUtils(adapter);
}
// Process top-level instructions and fallback to inner instructions
public processLiquidity(): PoolEvent[] {
const events = this.adapter.instructions
.map((instr: any, idx: number) => this.processInstruction(instr, idx))
.filter((event: any): event is PoolEvent => event !== null);
return events.length > 0 ? events : this.processInnerInstructions();
}
private processInnerInstructions(): PoolEvent[] {
try {
return this.adapter.instructions.flatMap((_: any, idx: number) => this.processInnerInstruction(idx));
} catch (error) {
console.error('Error processing Meteora inner instructions:', error);
return [];
}
}
private processInnerInstruction(outerIndex: number): PoolEvent[] {
return (this.adapter.innerInstructions || [])
.filter((set) => set.index === outerIndex)
.flatMap((set) =>
set.instructions
.map((instr, innerIdx) => this.processInstruction(instr, outerIndex, innerIdx))
.filter((event): event is PoolEvent => event !== null)
);
}
private processInstruction(instruction: any, index: number, innerIndex?: number): PoolEvent | null {
const programId = this.adapter.getInstructionProgramId(instruction);
const parser = this.getParser(programId);
return parser ? parser.parseInstruction(instruction, index, innerIndex) : null;
}
private getParser(programId: string): BaseMeteoraParser | null {
switch (programId) {
case DEX_PROGRAMS.METEORA.id:
return new MeteoraDLMMPoolParser(this.adapter);
case DEX_PROGRAMS.METEORA_POOLS.id:
return new MeteoraPoolsPoolParser(this.adapter);
default:
return null;
}
}
}
// Parser for Meteora DLMM pools
class MeteoraDLMMPoolParser extends BaseMeteoraParser {
public getPoolAction(data: any): { name: string; type: PoolEventType } | null {
const instructionType = data.slice(0, 8);
// Check if it's an ADD operation
for (const [name, discriminator] of Object.entries(DISCRIMINATORS.METEORA_DLMM.ADD_LIQUIDITY)) {
Iif (instructionType.equals(discriminator)) {
return { name, type: 'ADD' };
}
}
// Check if it's a REMOVE operation
for (const [name, discriminator] of Object.entries(DISCRIMINATORS.METEORA_DLMM.REMOVE_LIQUIDITY)) {
Iif (instructionType.equals(discriminator)) {
return { name, type: 'REMOVE' };
}
}
return null;
}
public parseInstruction(instruction: any, index: number, innerIndex?: number): PoolEvent | null {
try {
const data = getInstructionData(instruction);
const action = this.getPoolAction(data);
Iif (!action) return null;
const transfers = this.parseTransfers(instruction, index, innerIndex);
return action.type === 'ADD'
? this.parseAddLiquidityEvent(instruction, index, transfers)
: this.parseRemoveLiquidityEvent(instruction, index, transfers);
} catch (error) {
console.error('Error parsing DLMM instruction:', error);
return null;
}
}
// Parse ADD liquidity event
private parseAddLiquidityEvent(instruction: any, index: number, transfers: TransferData[]): PoolEvent {
const [token0, token1] = this.normalizeTokens(transfers);
const programId = this.adapter.getInstructionProgramId(instruction);
const accounts = this.adapter.getInstructionAccounts(instruction);
return {
...this.adapter.getPoolEventBase('ADD', programId),
idx: this.getInstructionId(index),
poolId: accounts[1],
poolLpMint: accounts[1],
token0Mint: token0?.info.mint,
token1Mint: token1?.info.mint,
token0Amount: token0?.info.tokenAmount.uiAmount || 0,
token1Amount: token1?.info.tokenAmount.uiAmount || 0,
token0Decimals: this.adapter.getTokenDecimals(token0!.info.mint),
token1Decimals: this.adapter.getTokenDecimals(token1!.info.mint),
};
}
// Parse REMOVE liquidity event
private parseRemoveLiquidityEvent(instruction: any, index: number, transfers: TransferData[]): PoolEvent {
const accounts = this.adapter.getInstructionAccounts(instruction);
let [token0, token1] = this.normalizeTokens(transfers);
if (token1 == undefined && token0?.info.mint == accounts[8]) {
token1 = token0;
token0 = undefined;
} else Iif (token0 == undefined && token1?.info.mint == accounts[7]) {
token0 = token1;
token1 = undefined;
}
const programId = this.adapter.getInstructionProgramId(instruction);
return {
...this.adapter.getPoolEventBase('REMOVE', programId),
idx: this.getInstructionId(index),
poolId: accounts[1],
poolLpMint: accounts[1],
token0Mint: token0?.info.mint || accounts[7],
token1Mint: token1?.info.mint || accounts[8],
token0Amount: token0?.info.tokenAmount.uiAmount || 0,
token1Amount: token1?.info.tokenAmount.uiAmount || 0,
token0Decimals: this.adapter.getTokenDecimals(token0!.info.mint || accounts[7]),
token1Decimals: this.adapter.getTokenDecimals(token1!.info.mint || accounts[8]),
};
}
private normalizeTokens(transfers: TransferData[]): [TransferData | undefined, TransferData | undefined] {
let [token0, token1]: any[] = this.utils.getLPTransfers(transfers);
Iif (transfers.length === 1 && transfers[0].info.mint == TOKENS.SOL) {
token1 = transfers[0];
token0 = undefined;
}
return [token0, token1];
}
}
// Parser for Meteora Pools
class MeteoraPoolsPoolParser extends BaseMeteoraParser {
public getPoolAction(data: Buffer): PoolEventType | null {
const instructionType = data.slice(0, 8);
Iif (instructionType.equals(DISCRIMINATORS.METEORA_POOLS.CREATE)) return 'CREATE';
Iif (instructionType.equals(DISCRIMINATORS.METEORA_POOLS.ADD_LIQUIDITY)) return 'ADD';
Iif (instructionType.equals(DISCRIMINATORS.METEORA_POOLS.REMOVE_LIQUIDITY)) return 'REMOVE';
return null;
}
public parseInstruction(instruction: any, index: number, innerIndex?: number): PoolEvent | null {
try {
const data = getInstructionData(instruction);
const action = this.getPoolAction(data);
Iif (!action) return null;
const transfers = this.parseTransfers(instruction, index, innerIndex);
switch (action) {
case 'CREATE':
return this.parseCreateLiquidityEvent(instruction, index, data, transfers);
case 'ADD':
return this.parseAddLiquidityEvent(instruction, index, data, transfers);
case 'REMOVE':
return this.parseRemoveLiquidityEvent(instruction, index, data, transfers);
default:
return null;
}
} catch (error) {
console.error('Error parsing Pools instruction:', error);
return null;
}
}
// Parse CREATE liquidity event
private parseCreateLiquidityEvent(
instruction: any,
index: number,
data: Buffer,
transfers: TransferData[]
): PoolEvent {
const accounts = this.adapter.getInstructionAccounts(instruction);
const [token0, token1] = this.utils.getLPTransfers(transfers);
const lpToken = transfers.find((t) => t.type === 'mintTo');
const token0Mint = token0?.info.mint || accounts[3];
const token1Mint = token1?.info.mint || accounts[4];
const programId = this.adapter.getInstructionProgramId(instruction);
const [token0Decimals, token1Decimals] = [this.adapter.getTokenDecimals(token0Mint), this.adapter.getTokenDecimals(token1Mint)];
return {
...this.adapter.getPoolEventBase('CREATE', programId),
idx: this.getInstructionId(index),
poolId: accounts[0],
poolLpMint: accounts[2],
token0Mint,
token1Mint,
token0Amount:
token0?.info.tokenAmount.uiAmount ||
convertToUiAmount(data.readBigUInt64LE(16), token0Decimals),
token1Amount:
token1?.info.tokenAmount.uiAmount ||
convertToUiAmount(data.readBigUInt64LE(8), token1Decimals),
token0Decimals: token0Decimals,
token1Decimals: token1Decimals,
lpAmount: lpToken?.info.tokenAmount.uiAmount || 0,
};
}
// Parse ADD liquidity event
private parseAddLiquidityEvent(instruction: any, index: number, data: Buffer, transfers: TransferData[]): PoolEvent {
const accounts = this.adapter.getInstructionAccounts(instruction);
const [token0, token1] = this.utils.getLPTransfers(transfers);
const lpToken = transfers.find((t) => t.type === 'mintTo');
const token0Mint = token0?.info.mint;
const token1Mint = token1?.info.mint;
const programId = this.adapter.getInstructionProgramId(instruction);
const [token0Decimals, token1Decimals] = [this.adapter.getTokenDecimals(token0Mint), this.adapter.getTokenDecimals(token1Mint)];
return {
...this.adapter.getPoolEventBase('ADD', programId),
idx: this.getInstructionId(index),
poolId: accounts[0],
poolLpMint: accounts[1],
token0Mint,
token1Mint,
token0Amount:
token0?.info.tokenAmount.uiAmount ||
convertToUiAmount(data.readBigUInt64LE(24), this.adapter.getTokenDecimals(token0Mint)),
token1Amount:
token1?.info.tokenAmount.uiAmount ||
convertToUiAmount(data.readBigUInt64LE(16), this.adapter.getTokenDecimals(token1Mint)),
token0Decimals: token0Decimals,
token1Decimals: token1Decimals,
lpAmount:
lpToken?.info.tokenAmount.uiAmount ||
convertToUiAmount(data.readBigUInt64LE(8), this.adapter.getTokenDecimals(accounts[1])),
};
}
// Parse REMOVE liquidity event
private parseRemoveLiquidityEvent(
instruction: any,
index: number,
data: Buffer,
transfers: TransferData[]
): PoolEvent {
const [token0, token1] = this.utils.getLPTransfers(transfers);
const lpToken = transfers.find((t) => t.type === 'burn');
const token0Mint = token0?.info.mint;
const token1Mint = token1?.info.mint;
const programId = this.adapter.getInstructionProgramId(instruction);
const accounts = this.adapter.getInstructionAccounts(instruction);
const [token0Decimals, token1Decimals] = [this.adapter.getTokenDecimals(token0Mint), this.adapter.getTokenDecimals(token1Mint)];
return {
...this.adapter.getPoolEventBase('REMOVE', programId),
idx: this.getInstructionId(index),
poolId: accounts[0],
poolLpMint: accounts[1],
token0Mint,
token1Mint,
token0Amount:
token0?.info.tokenAmount.uiAmount ||
convertToUiAmount(data.readBigUInt64LE(24), this.adapter.getTokenDecimals(token0Mint)),
token1Amount:
token1?.info.tokenAmount.uiAmount ||
convertToUiAmount(data.readBigUInt64LE(16), this.adapter.getTokenDecimals(token1Mint)),
token0Decimals: token0Decimals,
token1Decimals: token1Decimals,
lpAmount:
lpToken?.info.tokenAmount.uiAmount ||
convertToUiAmount(data.readBigUInt64LE(8), this.adapter.getTokenDecimals(accounts[1])),
};
}
}
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