package api

import (

    "github.com/030io/whalefs/master"

    "fmt"

    "encoding/json"

    "bytes"

    "net/http"

    "io/ioutil"

)

func Heartbeat(host string, port int, vms *master.VolumeManagerStatus) error {

    url := fmt.Sprintf("http://%s:%d/__heartbeat", host, port)

    body, err := json.Marshal(vms)

    reader := bytes.NewReader(body)

    resp, err := http.Post(url, "application/json", reader)

    if err != nil {

        return err

    }

    defer resp.Body.Close()

    if resp.StatusCode != http.StatusOK {

        body, _ = ioutil.ReadAll(resp.Body)

        return fmt.Errorf("%d != 200  body: %s", resp.StatusCode, body)

    }

    return nil

}