decentralized_reserve.py

import json
import logging
from web3 import Web3
import requests

# Configure logging
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')

class DecentralizedReserve:
    def __init__(self, blockchain_url, contract_address):
        self.blockchain_url = blockchain_url
        self.contract_address = contract_address
        self.web3 = Web3(Web3.HTTPProvider(blockchain_url))
        self.reserve_balance = 0
        self.governance_address = None  # Address allowed to make reserve adjustments

    def set_governance_address(self, address):
        """Set the governance address for reserve management."""
        self.governance_address = address
        logging.info(f"Governance address set to: {address}")

    def fetch_reserve_balance(self):
        """Fetch the current reserve balance from the blockchain."""
        try:
            contract = self.web3.eth.contract(address=self.contract_address, abi=self.get_contract_abi())
            self.reserve_balance = contract.functions.getReserveBalance().call()
            logging.info(f"Current reserve balance: {self.reserve_balance}")
        except Exception as e:
            logging.error(f"Error fetching reserve balance: {e}")

    def adjust_reserve(self, amount):
        """Adjust the reserve balance by a specified amount."""
        if self.web3.eth.defaultAccount != self.governance_address:
            logging.error("Unauthorized: Only the governance address can adjust the reserve.")
            return

        try:
            contract = self.web3.eth.contract(address=self.contract_address, abi=self.get_contract_abi())
            tx_hash = contract.functions.adjustReserve(amount).transact({'from': self.web3.eth.defaultAccount})
            self.web3.eth.waitForTransactionReceipt(tx_hash)
            self.reserve_balance += amount
            logging.info(f"Reserve adjusted by {amount}. New reserve balance: {self.reserve_balance}")
        except Exception as e:
            logging.error(f"Error adjusting reserve: {e}")

    def execute_transaction(self, recipient, amount):
        """Execute a transaction to transfer assets from the reserve."""
        if amount > self.reserve_balance:
            logging.error("Insufficient reserve balance for transaction.")
            return

        try:
            contract = self.web3.eth.contract(address=self.contract_address, abi=self.get_contract_abi())
            tx_hash = contract.functions.transfer(recipient, amount).transact({'from': self.web3.eth.defaultAccount})
            self.web3.eth.waitForTransactionReceipt(tx_hash)
            self.reserve_balance -= amount
            logging.info(f"Transferred {amount} to {recipient}. New reserve balance: {self.reserve_balance}")
        except Exception as e:
            logging.error(f"Error executing transaction: {e}")

    def get_contract_abi(self):
        """Retrieve the ABI for the smart contract (placeholder)."""
        # In a real implementation, you would load the ABI from a file or a service
        return [
            {
                "constant": True,
                "inputs": [],
                "name": "getReserveBalance",
                "outputs": [{"name": "", "type": "uint256"}],
                "payable": False,
                "stateMutability": "view",
                "type": "function"
            },
            {
                "constant": False,
                "inputs": [{"name": "amount", "type": "int256"}],
                "name": "adjustReserve",
                "outputs": [],
                "payable": False,
                "stateMutability": "nonpayable",
                "type": "function"
            },
            {
                "constant": False,
                "inputs": [{"name": "recipient", "type": "address"}, {"name": "amount", "type": "uint256"}],
                "name": "transfer",
                "outputs": [],
                "payable": False,
                "stateMutability": "nonpayable",
                "type": "function"
            }
        ]

    def run(self):
        """Main loop for reserve management."""
        while True:
            self.fetch_reserve_balance()
            # Additional logic for reserve management can be added here
            # For example, automatic adjustments based on market conditions
            time.sleep(60)  # Wait for a minute before the next iteration

if __name__ == "__main__":
    # Example usage
    blockchain_url = "https://your-blockchain-node-url"
    contract_address = "0xYourSmartContractAddress"

    decentralized_reserve = DecentralizedReserve(blockchain_url, contract_address)
    decentralized_reserve.set_governance_address("0xYourGovernanceAddress")
    decentralized_reserve.run()