container_network/crawler/health/dns/DNSHealthCrawler.go

package dns

import (
	cnsmd "git.loafle.net/commons/service_matcher-go/dns"
	ocmsc "git.loafle.net/overflow/commons-go/model/sensorconfig"
	"git.loafle.net/overflow/container_network/crawler/health"
	crawler "git.loafle.net/overflow/crawler-go"
)

type DNSHealthCrawler struct {
	health.SocketHealthCrawler
}

func (c *DNSHealthCrawler) Key() string {
	return "DNS_HEALTH"
}

func (c *DNSHealthCrawler) String() string {
	return "DNS Health Crawler"
}

func (c *DNSHealthCrawler) Auth(auth map[string]interface{}) error {
	return nil
}

func (c *DNSHealthCrawler) Get(config *ocmsc.SensorConfig) (map[string]string, error) {
	result := make(map[string]string, 0)

	conn, err := c.GetConnection(config)
	if err != nil {
		return nil, err
	}
	defer conn.Close()

	for _, mci := range config.MetaCollectionItems {
		switch mci.Key {
		case "dns.response_time":
			value, err := c.ResponseTime(config, conn)
			if err != nil {
				return nil, err
			}
			result[mci.Key] = value
			break
		default:
			break
		}
	}

	return result, nil
}

func NewCrawler() crawler.Crawler {
	c := &DNSHealthCrawler{}
	c.SetMatcher(cnsmd.NewMatcher())
	return c
}