worker/app/models/selfcheck.go

package models

import (
	"time"

	"github.com/pkg/errors"

	"rocketgit.ru/rsmon/worker/app/models/concerns"
)

// SelfCheck provides functionality.
type SelfCheck struct {
	concerns.Model
	Kind      string    `gorm:"not null;uniqueIndex:selfchecks" json:"kind"`
	Server    *string   `gorm:"uniqueIndex:selfchecks" json:"server"`
	Info      string    `json:"info"`
	LastCheck time.Time `json:"created_at"`
}

// LogCheck provides functionality.
func LogCheck(kind string) error {
	m := SelfCheck{
		Kind:   kind,
		Server: nil,
	}
	DB().FirstOrInit(&m, m)

	m.LastCheck = time.Now()

	return DB().Save(&m).Error
}

// IsOk checks if the selfcheck for the given kind ran recently.
func IsOk(kind string) (bool, string, error) {
	m := SelfCheck{
		Kind:   kind,
		Server: nil,
	}
	DB().First(&m, m)

	if m.ID == 0 {
		return false, "", errors.New("not run")
	}

	var ago time.Time
	if kind == "exp" {
		ago = time.Now().Add(-3 * time.Hour)
	} else {
		ago = time.Now().Add(-15 * time.Minute)
	}

	isOk := m.LastCheck.After(ago)

	return isOk, m.LastCheck.Format(time.RFC3339), nil
}