func (lc *LaunchConfig) load(s3c *s3.Client, bucket, prefix, key string) error {
resp, err := s3c.Get(bucket, prefix+"/"+key)
if err != nil {
return err
}
defer resp.Body.Close()
buf := &bytes.Buffer{}
_, err = buf.ReadFrom(resp.Body)
if err != nil {
return err
}
switch resp.StatusCode {
case 200:
// ignore
case 404:
return ErrorLaunchConfigNotFound
default:
return fmt.Errorf("failed to request container config with key %q from s3: [%d] %s", key, resp.StatusCode, buf.String())
}
rawHash := md5.Sum(buf.Bytes())
lc.hash = hex.EncodeToString(rawHash[:])
return json.Unmarshal(buf.Bytes(), lc)
}
func (lc *LaunchConfig) save(s3client *s3.Client, bucket, prefix string) error {
buf := bytes.NewBuffer(nil)
err := json.NewEncoder(buf).Encode(lc)
if err != nil {
return err
}
rawHash := md5.Sum(buf.Bytes())
lc.hash = hex.EncodeToString(rawHash[:])
key := fmt.Sprintf("%s/container.%s.json", prefix, lc.hash)
return s3client.Put(bucket, key, buf.Bytes(), nil)
}