garbage

type Collector interface {
	// Run runs the garbage collector until all eligible Promotion resources have
	// been deleted -- or until an unrecoverable error occurs.
	Run(context.Context) error
}

type CollectorConfig struct {
	// NumWorkers specifies the number of concurrent workers working on garbage
	// collection. Tuning this too low will result in slow garbage collection.
	// Tuning this too high will result in too many API calls and may result in
	// throttling.
	NumWorkers int `envconfig:"NUM_WORKERS" default:"3"`
	// MaxRetainedPromotions specifies the maximum number of Promotions in
	// terminal phases per Project that may be spared by the garbage collector.
	MaxRetainedPromotions int `envconfig:"MAX_RETAINED_PROMOTIONS" default:"20"`
}