Module approval 

Human approval before an effect runs.

An effect that requires approval (EffectBuilder::require_approval, EffectHandler::requires_approval) goes Pending → AwaitingApproval before its first attempt. The record is durable, so a pending approval survives restarts. Decisions come from two places:

• the runtime’s ApprovalProvider, asked when the effect needs a decision and again on every later call while none has been made. It may answer at once (a CLI prompt), or return ApprovalDecision::Deferred and let the decision arrive later (Slack, a dashboard);
• an operator, through Runtime::approve or Runtime::deny.

Approval is asked once: an approved effect is never asked again, even if it retries. The precondition is checked again after approval, since the decision may have taken a while.

Structs

ApprovalRequest

What an approver is asked to decide.

CliApproval

Asks at the terminal: prints the request and reads y or n.

Enums

ApprovalDecision

An approver’s answer.

Traits

ApprovalProvider

Decides whether effects that require approval may run.