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tezosnodes.go
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tezosnodes.go
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package tezosnodes
import (
"encoding/json"
"fmt"
"github.com/everstake/teztracker/models"
"io/ioutil"
"net/http"
"time"
)
const apiURL = "https://api.tezos-nodes.com/v1"
const routeBakers = "/bakers"
type (
API struct {
client *http.Client
}
Baker struct {
Rank int `json:"rank"`
Name string `json:"name"`
Address string `json:"address"`
Fee float64 `json:"fee"`
Yield float64 `json:"yield"`
Efficiency float64 `json:"efficiency"`
Freespace int64 `json:"freespace"`
}
)
func New() *API {
return &API{
client: &http.Client{
Timeout: time.Second * 30,
},
}
}
func (api *API) GetBakers() (thirdPartyBakers []models.ThirdPartyBaker, err error) {
var bakers []Baker
err = api.get(routeBakers, &bakers)
if err != nil {
return nil, fmt.Errorf("get: %s", err.Error())
}
thirdPartyBakers = make([]models.ThirdPartyBaker, len(bakers))
for i, b := range bakers {
thirdPartyBakers[i] = models.ThirdPartyBaker{
Number: b.Rank,
Name: b.Name,
Address: b.Address,
Yield: b.Yield,
Fee: b.Fee,
AvailableCapacity: b.Freespace * 1e6,
Efficiency: b.Efficiency,
}
}
return thirdPartyBakers, nil
}
func (api *API) get(endpoint string, dst interface{}) error {
url := fmt.Sprintf("%s%s", apiURL, endpoint)
resp, err := api.client.Get(url)
if err != nil {
return fmt.Errorf("client.Get: %s", err.Error())
}
defer resp.Body.Close()
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("ioutil.ReadAll: %s", err.Error())
}
err = json.Unmarshal(data, dst)
if err != nil {
return fmt.Errorf("json.Unmarshal: %s", err.Error())
}
return nil
}