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70 lines
1.2 KiB
70 lines
1.2 KiB
package main
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import (
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"compress/gzip"
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"encoding/json"
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"errors"
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"io"
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"io/ioutil"
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"net/http"
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)
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func get(client *http.Client, url string, output interface{}) error {
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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return err
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}
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req.Header.Add("Content-Type", "application/json; charset=utf-8")
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req.Header.Add("Accept-Encoding", "gzip")
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response, err := client.Do(req)
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if err != nil {
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return err
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}
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defer response.Body.Close()
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err = checkErrors(response)
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if err != nil {
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return err
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}
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body, err := decompress(response)
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if err != nil {
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return err
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}
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return decodeJSON(body, &output)
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}
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func checkErrors(response *http.Response) error {
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if response.StatusCode != 200 {
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body, _ := ioutil.ReadAll(response.Body)
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return errors.New("Bad response: " + string(body))
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}
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return nil
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}
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func decompress(response *http.Response) (io.Reader, error) {
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header := response.Header.Get("Content-Encoding")
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if len(header) < 1 {
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return response.Body, nil
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}
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reader, err := gzip.NewReader(response.Body)
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if err != nil {
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return nil, err
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}
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return reader, nil
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}
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func decodeJSON(body io.Reader, into interface{}) error {
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jsonDecoder := json.NewDecoder(body)
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return jsonDecoder.Decode(&into)
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}
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