State#

tradeexecutor.state.state.State Python class in Trading Strategy framework.

class State[source]#

Bases: object

The current state of the trading strategy execution.

It tells the current and past state of a single trading strategy execution: positions, their trades and related valuations, metrics and such data.

This class is the root object of the serialisable state tree for a trading strategy.

  • Can be serialised as JSON

  • Contains one Portfolio object that contains all positions, trades and underlying blockchain transactions

  • Contains one Visualisation object that contains run-time calculated and stored visualisation about the portfolio

  • Contains one Statistics object that contains run-time calculated and stored metrics about the portfolio

Uses of this class include

  • Backtest fills in the state when simulating the trades

  • The live execution environment keeps its internal state on a disk as a serialised State object

  • Analysis and performance metrics read the state

  • The web frontend reads the state

__init__(created_at=<factory>, last_updated_at=None, cycle=1, name=None, portfolio=<factory>, stats=<factory>, asset_blacklist=<factory>, visualisation=<factory>, uptime=<factory>)#
Parameters:
Return type:

None

Methods

__init__([created_at, last_updated_at, ...])

blacklist_asset(asset)

Add a asset to the blacklist.

check_if_clean()

Check that the state data is intact.

create_trade(strategy_cycle_at, pair, ...[, ...])

Creates a request for a new trade.

from_dict(kvs, *[, infer_missing])

from_json(s, *[, parse_float, parse_int, ...])

is_empty()

This state has no open or past trades or reserves.

is_good_pair(pair)

Check if the trading pair is blacklisted.

mark_broadcasted(broadcasted_at, trade)

mark_trade_failed(failed_at, trade)

Unroll the allocated capital.

mark_trade_success(executed_at, trade, ...)

perform_integrity_check()

Check that we are not reusing any trade or position ids and counters are correct.

revalue_positions(ts, valuation_method)

Revalue all open positions in the portfolio.

schema(*[, infer_missing, only, exclude, ...])

start_execution(ts, trade, txid, nonce)

Update our balances and mark the trade execution as started.

start_trades(ts, trades[, max_slippage, ...])

Mark trades ready to go.

to_dict([encode_json])

to_json(*[, skipkeys, ensure_ascii, ...])

update_reserves(new_reserves)

Attributes

cycle

The next cycle.

last_updated_at

When this state was saved

name

The name of this strategy.

created_at

When this state was created

portfolio

Portfolio of this strategy.

stats

Portfolio and position performance records over time.

asset_blacklist

Assets that the strategy is not allowed to touch, or have failed to trade in the past, resulting to a frozen position.

visualisation

Strategy visualisation and debug messages to show how the strategy is thinking.

uptime

Trade execution uptime and success statistcis]
created_at: datetime#

When this state was created

Same as when the strategy was launched

last_updated_at: Optional[datetime] = None#

When this state was saved

UTC timestamp. Set by by tradeexecutor.state.store.StateStore.sync()

cycle: int = 1#

The next cycle.

How many strategy thinking and execution cycles we have completed successfully.

Starts with 1 (no cycles completed)

name: Optional[str] = None#

The name of this strategy. Can be unset. Set when the state is created.

portfolio: Portfolio#

Portfolio of this strategy. Currently only one portfolio per strategy.

stats: Statistics#

Portfolio and position performance records over time.

asset_blacklist: Set[str]#

Assets that the strategy is not allowed to touch, or have failed to trade in the past, resulting to a frozen position. Besides this internal black list, the executor can have other blacklists based on the trading universe and these are not part of the state. The main motivation of this list is to avoid assets that caused a freeze in the future. Key is Ethereum address, lowercased.

visualisation: Visualisation#

Strategy visualisation and debug messages to show how the strategy is thinking.

uptime: Uptime#

Trade execution uptime and success statistcis]

Contains statistics about trade execution having to manage to run its internal functions.

is_empty()[source]#

This state has no open or past trades or reserves.

Return type:

bool

is_good_pair(pair)[source]#

Check if the trading pair is blacklisted.

Parameters:

pair (TradingPairIdentifier) –

Return type:

bool

create_trade(strategy_cycle_at, pair, quantity, reserve, assumed_price, trade_type, reserve_currency, reserve_currency_price, notes=None, pair_fee=None, lp_fees_estimated=None, planned_mid_price=None, price_structure=None, position=None)[source]#

Creates a request for a new trade.

If there is no open position, marks a position open.

Trade can be opened by knowing how much you want to buy (quantity) or how much cash you have to buy (reserve).

  • To open a spot buy, fill in reseve amount you wish to use for the buy

  • To open a spot sell, fill in quoantity amount you wish to use for the buy, as a negative number

Parameters:

  • strategy_cycle_at (datetime) – The strategy cycle timestamp for which this trade was executed.

  • trade_id – Trade id allocated by the portfolio

  • quantity (Optional[Decimal]) –

    How many units this trade does.

    Positive for buys, negative for sells in the spot market.

  • assumed_price (float) –

    The planned execution price.

    This is the price we expect to pay per quantity unit after the execution. This is the mid price + any LP fees included.

  • trade_type (TradeType) – What kind of a trade is this.

  • reserve_currency (AssetIdentifier) –

    Which portfolio reserve we use for this trade.

    param reserve_currency_price:

    If the quote token is not USD, then the exchange rate between USD and quote token we assume we have.

    Actual exchange rate may depend on the execution.

  • notes (Optional[str]) – Any human-readable remarks we want to tell about this trade.

  • pair_fee (Optional[float]) – The fee tier from the trading pair / overriden fee.

  • lp_fees_estimated (Optional[float]) – HOw much we estimate to pay in LP fees (dollar)

  • planned_mid_price (Optional[float]) – What was the mid-price of the trading pair when we started to plan this trade.

  • reserve (Optional[Decimal]) –

    How many reserve units this trade produces/consumes.

    I.e. dollar amount for buys/sells.

  • price_structure (Optional[TradePricing]) –

    The full planned price structure for this trade.

    The state of the market at the time of planning the trade, and what fees we assumed we are going to get.

  • position (Optional[TradingPosition]) –

    Override the position for the trade.

    • Use for close trades (you need to explicitly tell which position to close as there might be two positions with the same pair)

    • Use for repair trades.

  • notes – Human-readable string to show on the trade.

  • pair (TradingPairIdentifier) –

  • reserve_currency_price (float) –

Returns:

Tuple of entries

  • Trade position (old/new)

  • New trade

  • True if a a new position was opened

Return type:

Tuple[TradingPosition, TradeExecution, bool]

start_execution(ts, trade, txid, nonce)[source]#

Update our balances and mark the trade execution as started.

Called before a transaction is broadcasted.

Parameters:
mark_trade_failed(failed_at, trade)[source]#

Unroll the allocated capital.

Parameters:
revalue_positions(ts, valuation_method)[source]#

Revalue all open positions in the portfolio.

Reserves are not revalued.

Parameters:
blacklist_asset(asset)[source]#

Add a asset to the blacklist.

Parameters:

asset (AssetIdentifier) –

perform_integrity_check()[source]#

Check that we are not reusing any trade or position ids and counters are correct.

Raise:

Assertion error in the case internal data structures are damaged

start_trades(ts, trades, max_slippage=0.01, underflow_check=False)[source]#

Mark trades ready to go.

Update any internal accounting of capital allocation from reseves to trades.

Sets the execution model specific parameters like max_slippage on the trades.

Parameters:

  • max_slippage (float) – The slippage allowed for this trade before it fails in execution. 0.01 is 1%.

  • underflow_check – If true warn us if we do not have enough reserves to perform the trades. This does not consider new reserves released from the closed positions in this cycle.

  • ts (datetime) –

  • trades (List[TradeExecution]) –

check_if_clean()[source]#

Check that the state data is intact.

Check for the issues that could be caused e.g. trade-executor unclean shutdown or a blockchain node crash.

One of a typical issue would be

  • A trade that failed to execute

  • A trade that was broadcasted, but we did not get a confirmation back in time, causing the trade executor to crash

Call this when you restart a trade execution to ensure the old state is intact. For any unfinished trades, run a repair command or manually repair the database.

Raises:

UncleanState – In the case we detect unclean stuff

__init__(created_at=<factory>, last_updated_at=None, cycle=1, name=None, portfolio=<factory>, stats=<factory>, asset_blacklist=<factory>, visualisation=<factory>, uptime=<factory>)#
Parameters:
Return type:

None