Source code for

from abc import ABC
from collections import defaultdict
from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple

from negmas import Mechanism, MechanismState, NegotiatorMechanismInterface
from negmas.negotiators import Negotiator
from negmas.outcomes import Issue
from negmas.situated import Agent, Breach, Contract, RenegotiationRequest

from .agent import SCML2019Agent
from .common import Factory, InsurancePolicy

    from .world import SCML2019World

__all__ = ["DefaultInsuranceCompany", "InsuranceCompany"]

[docs] class InsuranceCompany(Agent, ABC): """Base class for all insurance companies""" def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self._world: Optional[SCML2019World] = None
[docs] def _respond_to_negotiation_request( self, initiator: str, partners: List[str], issues: List[Issue], annotation: Dict[str, Any], mechanism: NegotiatorMechanismInterface, role: Optional[str], req_id: Optional[str], ) -> Optional[Negotiator]: pass
[docs] def on_neg_request_rejected(self, req_id: str, by: Optional[List[str]]): pass
[docs] def on_neg_request_accepted( self, req_id: str, mechanism: NegotiatorMechanismInterface ): pass
[docs] def on_negotiation_failure( self, partners: List[str], annotation: Dict[str, Any], mechanism: NegotiatorMechanismInterface, state: MechanismState, ) -> None: pass
[docs] def on_negotiation_success( self, contract: Contract, mechanism: NegotiatorMechanismInterface ) -> None: pass
[docs] def on_contract_signed(self, contract: Contract) -> None: pass
[docs] def on_contract_cancelled(self, contract: Contract, rejectors: List[str]) -> None: pass
[docs] def sign_contract(self, contract: Contract) -> Optional[str]: pass
[docs] def respond_to_negotiation_request( self, initiator: str, partners: List[str], issues: List[Issue], annotation: Dict[str, Any], mechanism: Mechanism, role: Optional[str], req_id: str, ) -> Optional[Negotiator]: pass
[docs] def on_contract_breached( self, contract: Contract, breaches: List[Breach], resolution: Optional[Contract] ) -> None: pass
[docs] def on_contract_executed(self, contract: Contract) -> None: pass
[docs] class DefaultInsuranceCompany(InsuranceCompany): """Represents an insurance company in the world""" def __init__( self, premium: float, premium_breach_increment: float, premium_time_increment: float, a2f: Dict[str, Factory], disabled=False, name: str = None, ): super().__init__(name=name) self.premium_breach_increment = premium_breach_increment self.premium = premium self.disabled = disabled self.premium_time_increment = premium_time_increment self.insured_contracts: Dict[Tuple[Contract, str], InsurancePolicy] = dict() Dict[int, int] = defaultdict(int) self.wallet: float = 0.0 self.a2f = a2f
[docs] def init(self): pass
[docs] def set_renegotiation_agenda( self, contract: Contract, breaches: List[Breach] ) -> Optional[RenegotiationRequest]: return None
[docs] def respond_to_renegotiation_request( self, contract: Contract, breaches: List[Breach], agenda: RenegotiationRequest ) -> Optional[Negotiator]: raise ValueError("The insurance company does not receive callbacks")
[docs] def evaluate_insurance( self, contract: Contract, insured: SCML2019Agent, against: SCML2019Agent, t: int = None, ) -> Optional[float]: """Can be called to evaluate the premium for insuring the given contract against breaches committed by others Args: against: The `SCML2019Agent` to insure against contract: hypothetical contract insured: The `SCML2019Agent` to buy the insurance t: time at which the policy is to be bought. If None, it means current step Remarks: - The premium returned is relative to the contract price. To actually calculate the cost of buying this insurance, you need to multiply this by the contract value (quantity * unit_price). """ if self.disabled: return None # fail if no premium if self.premium is None: return None # assume the insurance is to be bought now if needed if t is None: t = self.awi.current_step # find the delay from contract signing. The more this is the more expensive the insurance will be if contract.signed_at is None: dt = 0 else: dt = max(0, t - contract.signed_at) # fail if the insurance is to be bought at or after the agreed upon delivery time if t >= contract.agreement.get("time", -1): return None # find the total breach of the agent I am insuring against. The more this is, the more expensive the insurance breaches = self.awi.bb_query(section="breaches", query={"perpetrator": against}) b = 0 if breaches is not None: for _, breach in breaches.items(): b += breach.level return (self.premium + b * self.premium_breach_increment) * ( 1 + self.premium_time_increment * dt )
[docs] def buy_insurance( self, contract: Contract, insured: SCML2019Agent, against: SCML2019Agent ) -> Optional[InsurancePolicy]: """Buys insurance for the contract at the premium calculated by the insurance company. Remarks: The agent can call `evaluate_insurance` to find the premium that will be used. See Also: `evaluate_premium` """ if self.disabled: return None premium = self.evaluate_insurance( contract=contract, t=self.awi.current_step, insured=insured, against=against ) if premium is None: return None premium *= contract.agreement["quantity"] * contract.agreement["unit_price"] factory = self.a2f[] if factory.wallet < premium: return None self.wallet += premium policy = InsurancePolicy( contract=contract, at_time=self.awi.current_step, against=against, premium=premium, ) self.insured_contracts[(contract,] = policy return policy
[docs] def is_insured(self, contract: Contract, perpetrator: SCML2019Agent) -> bool: """ Args: contract: perpetrator: Returns: """ if self.disabled: return False if (contract, in self.insured_contracts.keys(): del self.insured_contracts[(contract,] return True return False
[docs] def step(self): """does nothing"""