http_req_res_utils.go

// Copyright 2020 The the-blockchain-bar Authors
// This file is part of the the-blockchain-bar library.
//
// The the-blockchain-bar library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The the-blockchain-bar library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package node

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
)

func readReq(r *http.Request, reqBody interface{}) error {
	reqBodyJson, err := ioutil.ReadAll(r.Body)
	if err != nil {
		return fmt.Errorf("unable to read request body. %s", err.Error())
	}
	defer r.Body.Close()

	err = json.Unmarshal(reqBodyJson, reqBody)
	if err != nil {
		return fmt.Errorf("unable to unmarshal request body. %s", err.Error())
	}

	return nil
}

func readRes(r *http.Response, reqBody interface{}) error {
	resBodyJson, err := ioutil.ReadAll(r.Body)
	if err != nil {
		return fmt.Errorf("unable to read response body. %s", err.Error())
	}
	defer r.Body.Close()

	if r.StatusCode != http.StatusOK {
		return fmt.Errorf("unable to process response. %s", string(resBodyJson))
	}

	err = json.Unmarshal(resBodyJson, reqBody)
	if err != nil {
		return fmt.Errorf("unable to unmarshal response body. %s", err.Error())
	}

	return nil
}