103 lines
4.8 KiB
Python
Executable File
103 lines
4.8 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import logging
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import os
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import os.path
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import sys
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import traceback
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from decimal import Decimal
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from solana.publickey import PublicKey
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sys.path.insert(0, os.path.abspath(
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os.path.join(os.path.dirname(__file__), "..")))
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import mango # nopep8
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# We explicitly want argument parsing to be outside the main try-except block because some arguments
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# (like --help) will cause an exit, which our except: block traps.
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parser = argparse.ArgumentParser(description="Liquidate a single margin account.")
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mango.ContextBuilder.add_command_line_parameters(parser)
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mango.Wallet.add_command_line_parameters(parser)
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parser.add_argument("--address", type=PublicKey,
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help="Solana address of the Mango Markets margin account to be liquidated")
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parser.add_argument("--notify-liquidations", type=mango.parse_subscription_target, action="append", default=[],
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help="The notification target for liquidation events")
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parser.add_argument("--notify-successful-liquidations", type=mango.parse_subscription_target,
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action="append", default=[], help="The notification target for successful liquidation events")
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parser.add_argument("--notify-failed-liquidations", type=mango.parse_subscription_target,
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action="append", default=[], help="The notification target for failed liquidation events")
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parser.add_argument("--notify-errors", type=mango.parse_subscription_target, action="append", default=[],
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help="The notification target for error events")
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parser.add_argument("--dry-run", action="store_true", default=False,
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help="runs as read-only and does not perform any transactions")
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args: argparse.Namespace = mango.parse_args(parser)
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for notify in args.notify_errors:
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handler = mango.NotificationHandler(notify)
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handler.setLevel(logging.ERROR)
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logging.getLogger().addHandler(handler)
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try:
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context = mango.ContextBuilder.from_command_line_parameters(args)
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wallet = mango.Wallet.from_command_line_parameters_or_raise(args)
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account_address = args.address
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liquidator_name = args.name
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logging.info(f"Wallet address: {wallet.address}")
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logging.info(f"Margin account address: {account_address}")
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group = mango.Group.load(context)
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logging.info("Checking wallet accounts.")
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scout = mango.AccountScout()
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report = scout.verify_account_prepared_for_group(context, group, wallet.address)
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logging.info(f"Wallet account report: {report}")
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if report.has_errors:
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raise Exception(f"Account '{wallet.address}' is not prepared for group '{group.address}'.")
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logging.info("Wallet accounts OK.")
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liquidations_publisher = mango.EventSource[mango.LiquidationEvent]()
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for notification_target in args.notify_liquidations:
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liquidations_publisher.subscribe(on_next=notification_target.send)
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for notification_target in args.notify_successful_liquidations:
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filtering = mango.FilteringNotificationTarget(
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notification_target, lambda item: isinstance(item, mango.LiquidationEvent) and item.succeeded)
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liquidations_publisher.subscribe(on_next=filtering.send)
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for notification_target in args.notify_failed_liquidations:
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filtering = mango.FilteringNotificationTarget(notification_target, lambda item: isinstance(
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item, mango.LiquidationEvent) and not item.succeeded)
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liquidations_publisher.subscribe(on_next=filtering.send)
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# TODO: Add proper liquidator classes here when they're written for V3
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if args.dry_run:
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account_liquidator: mango.AccountLiquidator = mango.NullAccountLiquidator()
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else:
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account_liquidator = mango.NullAccountLiquidator()
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# TODO - fetch prices when available for V3.
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# prices = group.fetch_token_prices(context)
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account = mango.Account.load(context, account_address, group)
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worthwhile_threshold = Decimal(0) # No threshold - don't take this into account.
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liquidatable_report = mango.LiquidatableReport.build(group, [], account, worthwhile_threshold)
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transaction_ids = account_liquidator.liquidate(liquidatable_report)
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if transaction_ids is None or len(transaction_ids) == 0:
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print("No transaction sent.")
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else:
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print("Transaction ID:", transaction_ids)
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print("Waiting for confirmation...")
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context.client.wait_for_confirmation(transaction_ids)
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for transaction_id in transaction_ids:
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transaction_scout = mango.TransactionScout.load(context, transaction_id)
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print(str(transaction_scout))
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except Exception as exception:
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logging.critical(f"Liquidator stopped because of exception: {exception} - {traceback.format_exc()}")
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except:
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logging.critical(f"Liquidator stopped because of uncatchable error: {traceback.format_exc()}")
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finally:
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logging.info("Liquidation complete.")
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