package main

import "fmt"
import "net/http"
import "io"
import "io/ioutil"
import "log"
import "gopkg.in/yaml.v3"
import "time"

type Group struct {
  Name string `yaml:"group"`
  Tables []string `yaml:"tables"`
  Hosts []string `yaml:"hosts"`
}
func main() {
  fmt.Println("staring")

  var conf map[string]Group
  yamlFile, err := ioutil.ReadFile("conf.yaml")
  if err != nil {
    log.Printf("Configuration open error #%v ", err)
  }
  err = yaml.Unmarshal(yamlFile, &conf)
  if err != nil {
    log.Fatalf("Configuration read error #%v", err)
  }

  for name, group := range conf {
    fmt.Println("Checking group", name )
    for _, host := range group.Hosts {
      client := &http.Client{
        Timeout: time.Second * 5,
      }
      resp, err := client.Head(fmt.Sprintf("http://%s", host))
      if err != nil {
        fmt.Println(host, "Failed")
      } else {
        _, _ = io.ReadAll(resp.Body)
        resp.Body.Close()
        fmt.Println(host, "Status", resp.StatusCode)
      }
    }
  }

}