package manager

import "context"

// BaseContextFunc is a function used to provide a base Context to Runnables managed by a Manager.
type BaseContextFunc func() context.Context

// Runnable allows a component to be started.
// It's very important that Start blocks until it's done running.
type Runnable interface {
	// Start starts running the component.  The component will stop running when the context is
	// closed. Start blocks until the context is closed or an error occurs.
	Start(context.Context) error
}

// RunnableFunc implements Runnable using a function.
// It's very important that the given function block until it's done running.
type RunnableFunc func(context.Context) error

// Start implements Runnable.
func (r RunnableFunc) Start(ctx context.Context) error {
	return r(ctx)
}