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messages.go
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/
messages.go
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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// 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 api
import (
"encoding/json"
"io"
"net/http"
"go.thethings.network/lorawan-stack/v3/pkg/errors"
"go.thethings.network/lorawan-stack/v3/pkg/gogoproto"
)
const maxResponseSize = (1 << 24) // 16 MiB
var errRequest = errors.DefineUnavailable("request", "LoRa Cloud GLS request")
func parse(result interface{}, res *http.Response) error {
defer res.Body.Close()
defer io.Copy(io.Discard, res.Body)
reader := io.LimitReader(res.Body, maxResponseSize)
if res.StatusCode < 200 || res.StatusCode > 299 {
body, _ := io.ReadAll(reader)
detail, err := gogoproto.Struct(map[string]interface{}{
"status_code": res.StatusCode,
"body": string(body),
})
if err != nil {
return err
}
return errRequest.WithDetails(detail)
}
return json.NewDecoder(reader).Decode(result)
}