ContractNegotiator¶

class · namespace Hazel

Validates a TaskContract, resolves optional terms, configures the engine's observation/reward/termination pipeline, and returns a NegotiatedTaskSession that subsequent Step/Reset calls reference. The negotiator is the single entry point for setting up contract-driven training sessions. It replaces the implicit configuration where Step just returns whatever observations the engine happens to assemble. After negotiation, the engine knows exactly: - Which observations to assemble and in what order (ObservationSlot layout) - Which reward signals to compute each step - Which termination conditions to evaluate each step

public sealed class ContractNegotiator

Properties¶

ActiveSession¶

public NegotiatedSession ActiveSession { get; }

The currently active negotiated session, or null if none. Read by AgentBatch/ExternalAgentRegistry to determine whether to compute enriched step data (rewards, terminations).

Methods¶

ClearSession()¶

public void ClearSession()

Clear the active session. Called on scene stop.

GetManifest(string)¶

public ManifestSnapshot GetManifest(string robotName)

Build a capability manifest for the given robot. Delegates to MdpComponentRegistry.BuildManifest.

Negotiate(Rpc.TaskContract)¶

public NegotiationOutcome Negotiate(Rpc.TaskContract contract)

Negotiate a task contract: validate, resolve optionals, configure engine. Returns a NegotiationOutcome with the session (on success) or validation errors.

Source: Hazel/Learn/ContractNegotiator.cs