package controller

import (
	"time"

	"k8s.io/client-go/util/workqueue"

	"github.com/argoproj/argo-workflows/v3/util/env"
)

type fixedItemIntervalRateLimiter struct{}

func (r *fixedItemIntervalRateLimiter) When(interface{}) time.Duration {
	// We need to rate limit a minimum 1s, otherwise informers are unlikely to be upto date
	// and we'll operate on an out of date version of a workflow.
	// Under high load, the informer can get many seconds behind. Increasing this to 30s
	// would be sensible for some users.
	// Higher values mean that workflows with many short running (<20s) nodes do not progress as quickly.
	// So some users may wish to have this as low as 2s.
	// The default of 10s provides a balance more most users.
	return env.LookupEnvDurationOr("DEFAULT_REQUEUE_TIME", 10*time.Second)
}

func (r *fixedItemIntervalRateLimiter) Forget(interface{}) {}

func (r *fixedItemIntervalRateLimiter) NumRequeues(interface{}) int {
	return 1
}

var _ workqueue.RateLimiter = &fixedItemIntervalRateLimiter{}