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requests.go
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/
requests.go
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/*
* Copyright 2020 Django Cass
*
* 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 httputils
import (
"encoding/json"
log "github.com/sirupsen/logrus"
"io/ioutil"
"net/http"
)
// WithBody reads an HTTP JSON request body and marshals it into a given struct
// Param v must be a pointer
func WithBody(r *http.Request, v interface{}) (err error) {
defer r.Body.Close()
body, err := ioutil.ReadAll(r.Body)
if err != nil {
return err
}
err = json.Unmarshal(body, v)
return
}
// ReturnJSON converts a given interface into JSON and writes it into an http response
// You should not write any additional data to the http.ResponseWriter after this
func ReturnJSON(w http.ResponseWriter, code int, v interface{}) {
// convert our interface into JSON
data, err := json.Marshal(v)
if err != nil {
log.WithError(err).Error("failed to marshal given struct into json")
http.Error(w, "failed to marshal struct", http.StatusInternalServerError)
return
}
// set the content type
w.Header().Set(ContentType, ApplicationJSON)
w.WriteHeader(code)
_, _ = w.Write(data)
}