api/test/e2e/http.go

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 e2e

import (
	"bytes"
	"encoding/json"
	"io"
	"io/ioutil"
	"mime/multipart"
	"net/http"
	"net/url"
	"os"
	"path/filepath"
	"strings"
)

type UploadFile struct {
	Name     string
	Filepath string
}

var httpClient = &http.Client{}

func PostFile(reqUrl string, reqParams map[string]string, files []UploadFile, headers map[string]string) ([]byte, int, error) {
	return post(reqUrl, reqParams, "multipart/form-data", files, headers)
}

func post(reqUrl string, reqParams map[string]string, contentType string, files []UploadFile, headers map[string]string) ([]byte, int, error) {
	requestBody, realContentType := getReader(reqParams, contentType, files)
	httpRequest, _ := http.NewRequest("POST", reqUrl, requestBody)
	httpRequest.Header.Add("Content-Type", realContentType)
	if headers != nil {
		for k, v := range headers {
			httpRequest.Header.Add(k, v)
		}
	}
	resp, err := httpClient.Do(httpRequest)
	if err != nil {
		panic(err)
	}

	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, 0, err
	}

	return body, resp.StatusCode, nil
}

func getReader(reqParams map[string]string, contentType string, files []UploadFile) (io.Reader, string) {
	if strings.Index(contentType, "json") > -1 {
		bytesData, _ := json.Marshal(reqParams)
		return bytes.NewReader(bytesData), contentType
	}
	if files != nil {
		body := &bytes.Buffer{}
		writer := multipart.NewWriter(body)
		for _, uploadFile := range files {
			file, err := os.Open(uploadFile.Filepath)
			if err != nil {
				panic(err)
			}
			part, err := writer.CreateFormFile(uploadFile.Name, filepath.Base(uploadFile.Filepath))
			if err != nil {
				panic(err)
			}
			_, err = io.Copy(part, file)
			file.Close()
		}
		for k, v := range reqParams {
			if err := writer.WriteField(k, v); err != nil {
				panic(err)
			}
		}
		if err := writer.Close(); err != nil {
			panic(err)
		}
		return body, writer.FormDataContentType()
	}

	urlValues := url.Values{}
	for key, val := range reqParams {
		urlValues.Set(key, val)
	}

	reqBody := urlValues.Encode()

	return strings.NewReader(reqBody), contentType
}