scml.scml2019.factory_managers.builtins

Classes

FactoryManager	Base factory manager class that will be inherited by participant negmas in ANAC 2019.
DoNothingFactoryManager	The default factory manager that will be implemented by the committee of ANAC-SCML 2019
GreedyFactoryManager	The default factory manager that will be implemented by the committee of ANAC-SCML 2019

Module Contents

class scml.scml2019.factory_managers.builtins.FactoryManager(name=None, simulator_type: str | Type[scml.scml2019.simulators.FactorySimulator] = FastFactorySimulator)

Bases: scml.scml2019.agent.SCML2019Agent, abc.ABC

Base factory manager class that will be inherited by participant negmas in ANAC 2019.

The agent can access the world simulation in one of two ways:

1. Attributes and methods available in the Agent-SCML2020World-Interface (See SCMLAWI documentation for those).

2. Attributes and methods in the FactoryManager object itself. All factory managers will have the following attributes and methods that simplify the interaction with the world simulation. Some of these attributes/methods are convenient ways to access functionality already available in the agent’s internal SCMLAWI.

Attributes

Agent information

• id : The unique ID assigned to this agent. This is unique system-wide and is what is used in contracts, CFPs, etc.

• name: A name of the agent used for display purposes only. The simulator never accesses or uses this name except in printing and logging.

• uuid : Another name of the id .

• type_name : A string giving the type of the agent (as a fully qualified python class name).

Capabilities/Profiles

• line_profiles : A mapping specifying for each line index, all the profiles that can be run on it

• process_profiles : A mapping specifying for each Process index, all the profiles used to run it in the factory

• producing : Mapping from a product index to all manufacturing processes that can generate it

• consuming : Mapping from a product index to all manufacturing processes that can consume it

• compiled_profiles : All the profiles to be used by the factory belonging to this agent compiled to use process indices

• max_storage : Maximum storage available to the agent. Zero, None or float(‘inf’) all indicate unlimited storage.

Production Graph (also accessible through awi)

• products : List of products in the system

• processes : List of processes in the system

Helper Objects

• awi : The SCMLAWI instance assigned to this agent. It can be used to interact with the simulation (See SCMLAWI documentation).

• simulator : A FactorySimulator object that can be used to simulate what happens in the Factory assigned to this agent when given operations are conducted (e.g. production, paying money, etc).

Negotiations/Contracts

• requested_negotiations : A dynamic list of negotiations currently requested by the agent but not started. Correct management of this list is only possible if the agent **always* uses request_negotiation method of this class (see methods later) rather than directly calling request_method on the SCMLAWI ( awi ) member.

• running_negotiations : A dynamic list of negotiations currently running involving this agent. Correct management of this list is only possible if the agent **always* uses request_negotiation method of this class (see methods later) rather than directly calling request_method on the SCMLAWI ( awi ) member.

• unsigned_contracts : A dynamic list of negotiations contracts concluded involving this agent but not yet signed. Correct management of this list is only possible if the agent **always* uses request_negotiation method of this class (see methods later) rather than directly calling request_method on the SCMLAWI ( awi ) member.

Simulation attributes (also accessible through awi)

• transportation_delay : The transportation delay in the system.

• current_step : Current simulation step.

• immediate_negotiations : Whether or not negotiations start immediately upon registration (default is to start on the next production step)

• negotiation_speed_multiple : The number of negotiation rounds (steps) conducted in a single production step

• transportation_delay : Transportation delay in the system. Default is zero

Methods (Callable by the agent)

Actions on the world

• request_negotiation : Called to request a negotiation based on a CFP .

Scheduling and simulation helpers

• can_expect_agreement : Checks if it is possible in principle to get an agreement on this CFP by the time it becomes executable.

Callbacks (Callable by the simulation)

Decision callbacks (Called to make decisions)

• Negotiation and Contracts

  • respond_to_negotiation_request : Decide whether or not to engage in a negotiation on a CFP that was published earlier by this factory manager. If accepted, the agent should return a SAONegotiator object.

  • sign_contract : Decide whether or not to sign the contract. If accepted, the agent should return its own ID.

  • confirm_contract_execution : Decide whether or not to go on with executing a contract that the agent already signed. If rejected (by returning False ), a refusal-to-execute breach will be recorded.

• Breach related

  • confirm_partial_execution : Decide whether the agent agrees to partial execution. Called only when the the partner of this agent commits a partial breach (of level < 1) and this agent commits no breaches.

  • set_renegotiation_agenda : Decide what are the issues and ranges of acceptable values to re-negotiate about. Called only in case of breaches.

  • respond_to_renegotiation_request : Decide whether or not to engage in a re-negotiation.

• Financial

  • confirm_loan : Decide whether or not to accept an offered loan. *In ANAC 2019 league, loans are not allowed and this callback will never be called by the simulator.

Time-dependent callbacks (Information callback called at predefined times)

• init : Called once before any production or negotiations to initiate the agent.

• step : Called at every production step.

Information callbacks (Called to inform the agent about events)

• CFP related

  • on_new_cfp : Called whenever a CFP on a Product for which the agent has already registered interest (using register_interest method of its awi) is published. By default all agents register interest in the products they can consume or produce according to their profiles.

  • on_remove_cfp : Called whenever a CFP on a Product for which the agent has already registered interest (using register_interest method of its awi) is removed from the bulletin-board.

• Negotiation related

  • on_neg_request_accepted : Called when a negotiation request of the agent is accepted

  • on_neg_request_rejected : Called when a negotiation request of the agent is rejected

  • on_negotiation_success : Called when a negotiation of which the agent is a party succeeds with an agreement.

  • on_negotiation_failure : Called when a negotiation of which the agent is a party ends without agreement.

• Contract related

  • on_contract_cancelled : Called whenever a Contract of which the agent is a party is cancelled because the other party refused to sign it.

  • on_contract_signed : Called whenever a Contract of which the agent is a party is signed by both patners.

  • on_contract_nullified : Called whenever a Contract of which the agent is a party is nullified by the simulator as a part of bankruptcy processing.

  • on_contract_executed : Called when a contract executes completely and successfully.

  • on_contract_breached : Called when a contract is breached after complete contract processing.

• Production and factory related

  • on_production_failure : Called whenever a scheduled production (see SCMLAWI for production commands) fails

  • on_inventory_change : Called whenever there is a change in the inventory (something is moved in or out or out of storage due to an event other than production (e.g. contract execution).

  • on_cash_transfer : Called whenever cash is transferred to or from the factory’s wallet.

• About other agents

  • on_agent_bankrupt : Called whenever another agent goes bankrupt

  • on_new_report : Called whenever a new report of another agent for which this agent has registered interest is published. Interest is registered using the agent’s awi ‘s receive_financial_reports method.

transportation_delay = 0

Transportation delay in the world

simulator: scml.scml2019.simulators.FactorySimulator | None = None

The simulator used by this agent

simulator_type: Type[scml.scml2019.simulators.FactorySimulator]

Simulator type (as a class)

current_step = 0

Current simulation step

max_storage: int = 0

Maximum storage available to the agent

init_()

The initialization function called by the world directly.

It does the following actions by default:

1. copies some of the static world settings to the agent to make them available without calling the AWI.

2. prepares production related properties like producing, consuming, line_profiles, compiled_profiles, etc.

3. registers interest in all products that the agent can produce or consume in its factory.

4. finally it calls any custom initialization logic implemented in `init`()

See also

init, step

step_()

Called at every time-step. This function is called directly by the world.

abstract on_production_failure(failures: List[scml.scml2019.common.ProductionFailure]) → None

Called with a list of ProductionFailure records on production failure.

abstract on_production_success(reports: List[scml.scml2019.common.ProductionReport]) → None

Called with a list of ProductionReport records on production success

class scml.scml2019.factory_managers.builtins.DoNothingFactoryManager(name=None, simulator_type: str | Type[scml.scml2019.simulators.FactorySimulator] = FastFactorySimulator)

Bases: FactoryManager

The default factory manager that will be implemented by the committee of ANAC-SCML 2019

init()

Called to initialize the agent after the world is initialized. the AWI is accessible at this point.

step()

Called by the simulator at every simulation step

on_neg_request_rejected(req_id: str, by: List[str] | None)

Called when a requested negotiation is rejected

Parameters:

• req_id – The request ID passed to _request_negotiation

• by – A list of agents that refused to participate or None if the failure was for another reason

on_neg_request_accepted(req_id: str, mechanism: negmas.NegotiatorMechanismInterface)

Called when a requested negotiation is accepted

on_negotiation_failure(partners: List[str], annotation: Dict[str, Any], mechanism: negmas.NegotiatorMechanismInterface, state: negmas.MechanismState) → None

Called whenever a negotiation ends without agreement

on_negotiation_success(contract: negmas.Contract, mechanism: negmas.NegotiatorMechanismInterface) → None

Called whenever a negotiation ends with agreement

on_contract_signed(contract: negmas.Contract) → None

Called whenever a contract is signed by all partners

on_contract_cancelled(contract: negmas.Contract, rejectors: List[str]) → None

Called whenever at least a partner did not sign the contract

on_contract_executed(contract: negmas.Contract) → None

Called after successful contract execution for which the agent is one of the partners.

on_contract_breached(contract: negmas.Contract, breaches: List[negmas.Breach], resolution: negmas.Contract | None) → None

Called after complete processing of a contract that involved a breach.

Parameters:

• contract – The contract

• breaches – All breaches committed (even if they were resolved)

• resolution – The resolution contract if re-negotiation was successful. None if not.

sign_contract(contract: negmas.Contract) → str | None

Called after the signing delay from contract conclusion to sign the contract. Contracts become binding only after they are signed.

on_contract_nullified(contract: negmas.Contract, bankrupt_partner: str, compensation: float) → None

Will be called whenever a contract the agent is involved in is nullified because another partner went bankrupt

on_agent_bankrupt(agent_id: str) → None

Will be called whenever any agent goes bankrupt

Parameters:

agent_id – The ID of the agent that went bankrupt

Remarks:

• Agents can go bankrupt in two cases:

  1. Failing to pay one installments of a loan they bought and refusing (or being unable to) get another loan to pay it.

  2. Failing to pay a penalty on a sell contract they failed to honor (and refusing or being unable to get a loan to pay for it).

• All built-in agents ignore this call and they use the bankruptcy list ONLY to decide whether or not to negotiate in their on_new_cfp and respond_to_negotiation_request callbacks by pulling the bulletin-board using the helper function is_bankrupt of their AWI.

confirm_partial_execution(contract: negmas.Contract, breaches: List[negmas.Breach]) → bool

Will be called whenever a contract cannot be fully executed due to breaches by the other partner.

Parameters:

• contract – The contract that was breached

• breaches – A list of all the breaches committed.

Remarks:

• Will not be called if both partners committed breaches.

on_remove_cfp(cfp: scml.scml2019.common.CFP) → None

Called when a new CFP for a product for which the agent registered interest is removed

on_production_failure(failures: List[scml.scml2019.common.ProductionFailure]) → None

Called with a list of ProductionFailure records on production failure.

respond_to_negotiation_request(cfp: scml.scml2019.common.CFP, partner: str) → negmas.Negotiator | None

Called when a prospective partner requests a negotiation to start

confirm_contract_execution(contract: negmas.Contract) → bool

Called before executing any agreement

set_renegotiation_agenda(contract: negmas.Contract, breaches: List[negmas.Breach]) → negmas.RenegotiationRequest | None

Received by partners in ascending order of their total breach levels in order to set the renegotiation agenda when contract execution fails

Parameters:

• contract – The contract being breached

• breaches – All breaches on contract

Returns:

Renegotiation agenda (issues to negotiate about to avoid reporting the breaches).

respond_to_renegotiation_request(contract: negmas.Contract, breaches: List[negmas.Breach], agenda: negmas.RenegotiationRequest) → negmas.Negotiator | None

Called to respond to a renegotiation request

Parameters:

• agenda

• contract

• breaches

Returns:

confirm_loan(loan: scml.scml2019.common.Loan, bankrupt_if_rejected: bool) → bool

called by the world manager to confirm a loan if needed by the buyer of a contract that is about to be breached

on_new_cfp(cfp: scml.scml2019.common.CFP) → None

Called when a new CFP for a product for which the agent registered interest is published

on_inventory_change(product: int, quantity: int, cause: str) → None

Received whenever something moves in or out of the factory’s storage

Parameters:

• product – Product index.

• quantity – Negative value for products moving out and positive value for products moving in

• cause –

  The cause of the change. Possibilities include:

  • contract: Contract execution

  • insurance: Received from insurance company

  • bankruptcy: Liquidated due to bankruptcy

  • transport: Arrival of goods (when transportation delay in the system is > 0).

on_production_success(reports: List[scml.scml2019.common.ProductionReport]) → None

Called with a list of ProductionReport records on production success

on_cash_transfer(amount: float, cause: str) → None

Received whenever money is transferred to the factory or from it.

Parameters:

• amount – Amount of money (negative for transfers out of the factory, positive for transfers to it).

• cause –

  The cause of the change. Possibilities include:

  • contract: Contract execution

  • insurance: Received from insurance company

  • bankruptcy: Liquidated due to bankruptcy

  • transfer: Arrival of transferred money (when transfer delay in the system is > 0).

on_new_report(report: scml.scml2019.common.FinancialReport)

Called whenever a financial report is published.

Parameters:

report – The financial report giving details of the standing of an agent at some time (see FinancialReport)

Remarks:

• Agents must opt-in to receive these calls by calling receive_financial_reports on their AWI

class scml.scml2019.factory_managers.builtins.GreedyFactoryManager(name=None, simulator_type: str | Type[scml.scml2019.simulators.FactorySimulator] = FastFactorySimulator, scheduler_type: str | Type[scml.scml2019.schedulers.Scheduler] = GreedyScheduler, scheduler_params: Dict[str, Any] | None = None, optimism: float = 0.0, negotiator_type: str | Type[negmas.Negotiator] = DEFAULT_NEGOTIATOR, negotiator_params: Dict[str, Any] | None = None, n_retrials=5, use_consumer=True, reactive=True, sign_only_guaranteed_contracts=False, riskiness=0.0, max_insurance_premium: float = 0.1, reserved_value: float = -float('inf'))

Bases: DoNothingFactoryManager

The default factory manager that will be implemented by the committee of ANAC-SCML 2019

on_production_failure(failures: List[scml.scml2019.common.ProductionFailure]) → None

Called with a list of ProductionFailure records on production failure.

on_production_success(reports: List[scml.scml2019.common.ProductionReport]) → None

Called with a list of ProductionReport records on production success

confirm_loan(loan: scml.scml2019.common.Loan, bankrupt_if_rejected: bool) → bool

called by the world manager to confirm a loan if needed by the buyer of a contract that is about to be breached

confirm_contract_execution(contract: negmas.Contract) → bool

Called before executing any agreement

set_renegotiation_agenda(contract: negmas.Contract, breaches: List[negmas.Breach]) → negmas.RenegotiationRequest | None

Received by partners in ascending order of their total breach levels in order to set the renegotiation agenda when contract execution fails

Parameters:

• contract – The contract being breached

• breaches – All breaches on contract

Returns:

Renegotiation agenda (issues to negotiate about to avoid reporting the breaches).

respond_to_renegotiation_request(contract: negmas.Contract, breaches: List[negmas.Breach], agenda: negmas.RenegotiationRequest) → negmas.Negotiator | None

Called to respond to a renegotiation request

Parameters:

• agenda

• contract

• breaches

Returns:

negotiator_type = 'negmas.sao.AspirationNegotiator'

negotiator_params = None

optimism = 0.0

ufun_factory: Type[NegotiatorUtility] | Callable[[Any, Any], NegotiatorUtility]

__reserved_value

max_insurance_premium = 0.1

n_retrials = 5

n_neg_trials: Dict[str, int]

consumer = None

use_consumer = True

reactive = True

sign_only_guaranteed_contracts = False

contract_schedules: Dict[str, scml.scml2019.schedulers.ScheduleInfo]

riskiness = 0.0

negotiation_margin

scheduler_type: Type[scml.scml2019.schedulers.Scheduler]

scheduler: scml.scml2019.schedulers.Scheduler = None

scheduler_params: Dict[str, Any] = None

total_utility(contracts: Collection[negmas.Contract] = ()) → float

Calculates the total utility for the agent of a collection of contracts

init()

Called to initialize the agent after the world is initialized. the AWI is accessible at this point.

respond_to_negotiation_request(cfp: scml.scml2019.common.CFP, partner: str) → negmas.Negotiator | None

Called when a prospective partner requests a negotiation to start

on_negotiation_success(contract: negmas.Contract, mechanism: negmas.NegotiatorMechanismInterface)

Called whenever a negotiation ends with agreement

on_negotiation_failure(partners: List[str], annotation: Dict[str, Any], mechanism: negmas.NegotiatorMechanismInterface, state: negmas.MechanismState) → None

Called whenever a negotiation ends without agreement

_execute_schedule(schedule: scml.scml2019.schedulers.ScheduleInfo, contract: negmas.Contract) → None

sign_contract(contract: negmas.Contract)

Called after the signing delay from contract conclusion to sign the contract. Contracts become binding only after they are signed.

on_contract_signed(contract: negmas.Contract)

Called whenever a contract is signed by all partners

_process_buy_cfp(cfp: scml.scml2019.common.CFP) → None

_process_sell_cfp(cfp: scml.scml2019.common.CFP)

on_new_cfp(cfp: scml.scml2019.common.CFP) → None

Called when a new CFP for a product for which the agent registered interest is published

step()

Called by the simulator at every simulation step

can_produce(cfp: scml.scml2019.common.CFP, assume_no_further_negotiations=False) → bool

Whether or not we can produce the required item in time

can_secure_needs(schedule: scml.scml2019.schedulers.ScheduleInfo, step: int)

Finds if it is possible in principle to arrange these needs at the given time.

Parameters:

• schedule

• step

Returns: