55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
|
// Copyright (c) 2017 Uber Technologies, Inc.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
package utils
|
||
|
|
|
||
|
|
import (
|
||
|
|
"encoding/json"
|
||
|
|
"fmt"
|
||
|
|
"io"
|
||
|
|
"io/ioutil"
|
||
|
|
"net/http"
|
||
|
|
)
|
||
|
|
|
||
|
|
// GetJSON makes an HTTP call to the specified URL and parses the returned JSON into `out`.
|
||
|
|
func GetJSON(url string, out interface{}) error {
|
||
|
|
resp, err := http.Get(url)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return ReadJSON(resp, out)
|
||
|
|
}
|
||
|
|
|
||
|
|
// ReadJSON reads JSON from http.Response and parses it into `out`
|
||
|
|
func ReadJSON(resp *http.Response, out interface{}) error {
|
||
|
|
defer resp.Body.Close()
|
||
|
|
|
||
|
|
if resp.StatusCode >= 400 {
|
||
|
|
body, err := ioutil.ReadAll(resp.Body)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
return fmt.Errorf("StatusCode: %d, Body: %s", resp.StatusCode, body)
|
||
|
|
}
|
||
|
|
|
||
|
|
if out == nil {
|
||
|
|
io.Copy(ioutil.Discard, resp.Body)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
decoder := json.NewDecoder(resp.Body)
|
||
|
|
return decoder.Decode(out)
|
||
|
|
}
|