grafana/pkg/setting/setting_k8s_dashboard_cleanup.go

package setting

import (
	"time"
)

type K8sDashboardCleanupSettings struct {
	Interval  time.Duration
	Timeout   time.Duration
	BatchSize int64
}

const (
	defaultK8sDashboardCleanupInterval  = 30 * time.Second
	defaultK8sDashboardCleanupBatchSize = int64(10)
	minK8sDashboardCleanupInterval      = 10 * time.Second
	minK8sDashboardCleanupTimeout       = 5 * time.Second
	minK8sDashboardCleanupBatchSize     = int64(5)
	maxK8sDashboardCleanupBatchSize     = int64(200)
)

func (cfg *Cfg) readK8sDashboardCleanupSettings() {
	section := cfg.Raw.Section("dashboard_cleanup")

	// Read interval setting with validation
	cleanupInterval := section.Key("interval").MustDuration(defaultK8sDashboardCleanupInterval)
	if cleanupInterval < minK8sDashboardCleanupInterval {
		cfg.Logger.Warn("[dashboard_cleanup.interval] is too low; the minimum allowed (10s) is enforced")
		cleanupInterval = minK8sDashboardCleanupInterval
	}

	// Calculate timeout as 5 seconds less than interval, with minimum validation
	cleanupTimeout := cleanupInterval - (5 * time.Second)
	if cleanupTimeout < minK8sDashboardCleanupTimeout {
		cleanupTimeout = minK8sDashboardCleanupTimeout
	}

	// Read batch size with validation
	batchSize := section.Key("batch_size").MustInt64(defaultK8sDashboardCleanupBatchSize)
	if batchSize < minK8sDashboardCleanupBatchSize {
		cfg.Logger.Warn("[dashboard_cleanup.batch_size] is too low; the minimum allowed (5) is enforced")
		batchSize = minK8sDashboardCleanupBatchSize
	} else if batchSize > maxK8sDashboardCleanupBatchSize {
		cfg.Logger.Warn("[dashboard_cleanup.batch_size] is too high; the maximum allowed (1000) is enforced")
		batchSize = maxK8sDashboardCleanupBatchSize
	}

	cfg.K8sDashboardCleanup = K8sDashboardCleanupSettings{
		Interval:  cleanupInterval,
		Timeout:   cleanupTimeout,
		BatchSize: batchSize,
	}
}