pyopenbook/pyserum/utils.py

32 lines
949 B
Python

from solana.publickey import PublicKey
from solana.rpc.api import Client
from solders.account import Account
from solders.rpc.responses import GetAccountInfoResp
from spl.token.constants import WRAPPED_SOL_MINT
from pyserum._layouts.market import MINT_LAYOUT
def parse_bytes_data(res: GetAccountInfoResp) -> bytes:
if not isinstance(res.value, Account):
raise Exception("Cannot load byte data.")
return res.value.data
def load_bytes_data(addr: PublicKey, conn: Client) -> bytes:
res = conn.get_account_info(addr)
return parse_bytes_data(res)
def parse_mint_decimals(bytes_data: bytes) -> int:
return MINT_LAYOUT.parse(bytes_data).decimals
def get_mint_decimals(conn: Client, mint_pub_key: PublicKey) -> int:
"""Get the mint decimals for a token mint"""
if mint_pub_key == WRAPPED_SOL_MINT:
return 9
bytes_data = load_bytes_data(mint_pub_key, conn)
return parse_mint_decimals(bytes_data)