169 lines
6.0 KiB
Python
169 lines
6.0 KiB
Python
import json
|
|
import logging
|
|
from typing import Dict, List, Optional, Tuple
|
|
|
|
from solana.rpc.api import Client
|
|
from solana.rpc.types import MemcmpOpts
|
|
|
|
from app.core.config import settings
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class SolanaClient:
|
|
"""
|
|
Client for interacting with Solana blockchain
|
|
"""
|
|
|
|
def __init__(self, rpc_url: str = None):
|
|
"""
|
|
Initialize Solana client with RPC URL
|
|
"""
|
|
self.rpc_url = rpc_url or settings.SOLANA_RPC_URL
|
|
self.client = Client(self.rpc_url)
|
|
|
|
def get_latest_block(self) -> Dict:
|
|
"""
|
|
Get latest finalized block
|
|
"""
|
|
response = self.client.get_latest_blockhash()
|
|
if "error" in response:
|
|
logger.error(f"Error getting latest block: {response['error']}")
|
|
raise Exception(f"Error getting latest block: {response['error']}")
|
|
|
|
return response["result"]
|
|
|
|
def get_block(self, slot: int) -> Dict:
|
|
"""
|
|
Get block data by slot number
|
|
"""
|
|
response = self.client.get_block(
|
|
slot,
|
|
encoding="json",
|
|
max_supported_transaction_version=0,
|
|
transaction_details="full",
|
|
)
|
|
|
|
if "error" in response:
|
|
logger.error(f"Error getting block {slot}: {response['error']}")
|
|
raise Exception(f"Error getting block {slot}: {response['error']}")
|
|
|
|
return response["result"]
|
|
|
|
def get_blocks(self, start_slot: int, end_slot: int = None) -> List[int]:
|
|
"""
|
|
Get a list of confirmed blocks
|
|
"""
|
|
if end_slot is None:
|
|
# Get latest slot if end_slot not provided
|
|
response = self.client.get_slot()
|
|
if "error" in response:
|
|
logger.error(f"Error getting latest slot: {response['error']}")
|
|
raise Exception(f"Error getting latest slot: {response['error']}")
|
|
|
|
end_slot = response["result"]
|
|
|
|
response = self.client.get_blocks(start_slot, end_slot)
|
|
|
|
if "error" in response:
|
|
logger.error(f"Error getting blocks from {start_slot} to {end_slot}: {response['error']}")
|
|
raise Exception(f"Error getting blocks from {start_slot} to {end_slot}: {response['error']}")
|
|
|
|
return response["result"]
|
|
|
|
def get_transaction(self, signature: str) -> Dict:
|
|
"""
|
|
Get transaction details by signature
|
|
"""
|
|
response = self.client.get_transaction(
|
|
signature,
|
|
encoding="json",
|
|
max_supported_transaction_version=0,
|
|
)
|
|
|
|
if "error" in response:
|
|
logger.error(f"Error getting transaction {signature}: {response['error']}")
|
|
raise Exception(f"Error getting transaction {signature}: {response['error']}")
|
|
|
|
return response["result"]
|
|
|
|
def get_token_accounts_by_owner(self, owner: str, program_id: str = None) -> List[Dict]:
|
|
"""
|
|
Get token accounts by owner
|
|
"""
|
|
filters = []
|
|
if program_id:
|
|
filters.append(
|
|
MemcmpOpts(
|
|
offset=0,
|
|
bytes=program_id,
|
|
)
|
|
)
|
|
|
|
response = self.client.get_token_accounts_by_owner(
|
|
owner,
|
|
filters,
|
|
encoding="jsonParsed",
|
|
)
|
|
|
|
if "error" in response:
|
|
logger.error(f"Error getting token accounts for {owner}: {response['error']}")
|
|
raise Exception(f"Error getting token accounts for {owner}: {response['error']}")
|
|
|
|
return response["result"]["value"]
|
|
|
|
def analyze_transaction_for_arbitrage(self, tx_data: Dict) -> Tuple[bool, Optional[Dict]]:
|
|
"""
|
|
Analyze transaction data for potential arbitrage
|
|
|
|
Returns a tuple of (is_arbitrage, arbitrage_data)
|
|
"""
|
|
# This is a simple placeholder implementation
|
|
# A real implementation would require advanced pattern matching
|
|
# and knowledge of Solana DEX structures
|
|
|
|
# Check if transaction has instructions
|
|
if not tx_data or "transaction" not in tx_data:
|
|
return False, None
|
|
|
|
tx = tx_data["transaction"]
|
|
if "message" not in tx or "instructions" not in tx["message"]:
|
|
return False, None
|
|
|
|
instructions = tx["message"]["instructions"]
|
|
|
|
# Check if transaction has multiple token swaps
|
|
# This is a simplistic approach - real implementation would be more sophisticated
|
|
swap_count = 0
|
|
token_programs = [
|
|
"9xQeWvG816bUx9EPjHmaT23yvVM2ZWbrrpZb9PusVFin", # Serum DEX v3
|
|
"SwaPpA9LAaLfeLi3a68M4DjnLqgtticKg6CnyNwgAC8", # Swap Program
|
|
"27haf8L6oxUeXrHrgEgsexjSY5hbVUWEmvv9Nyxg8vQv", # Jupiter Aggregator
|
|
]
|
|
|
|
token_addresses = []
|
|
for inst in instructions:
|
|
if inst.get("programId") in token_programs:
|
|
swap_count += 1
|
|
# In a real implementation, we'd parse the instruction data
|
|
# to identify the tokens being swapped
|
|
|
|
# For now, we'll just use a placeholder
|
|
token_addresses.append(f"token_{swap_count}")
|
|
|
|
# Check for circular pattern (token A -> token B -> token C -> token A)
|
|
if swap_count >= 3:
|
|
# Check if first and last token are the same (circular)
|
|
is_circular = len(token_addresses) >= 3 and token_addresses[0] == token_addresses[-1]
|
|
|
|
if is_circular:
|
|
# In a real implementation, we'd calculate the actual profit
|
|
# For now, return a placeholder
|
|
return True, {
|
|
"profit_token_address": token_addresses[0],
|
|
"profit_amount": 0.01, # Placeholder
|
|
"path": json.dumps(token_addresses),
|
|
"confidence_score": 0.7, # Placeholder
|
|
}
|
|
|
|
return False, None |