mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-25 11:39:12 +08:00
435 lines
9.4 KiB
Go
435 lines
9.4 KiB
Go
package util
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import (
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"compress/gzip"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"strings"
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"github.com/chrislusf/seaweedfs/weed/glog"
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)
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var (
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client *http.Client
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Transport *http.Transport
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)
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func init() {
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Transport = &http.Transport{
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MaxIdleConns: 1024,
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MaxIdleConnsPerHost: 1024,
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}
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client = &http.Client{
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Transport: Transport,
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}
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}
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func Post(url string, values url.Values) ([]byte, error) {
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r, err := client.PostForm(url, values)
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if err != nil {
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return nil, err
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}
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defer r.Body.Close()
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b, err := io.ReadAll(r.Body)
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if r.StatusCode >= 400 {
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if err != nil {
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return nil, fmt.Errorf("%s: %d - %s", url, r.StatusCode, string(b))
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} else {
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return nil, fmt.Errorf("%s: %s", url, r.Status)
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}
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}
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if err != nil {
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return nil, err
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}
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return b, nil
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}
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// github.com/chrislusf/seaweedfs/unmaintained/repeated_vacuum/repeated_vacuum.go
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// may need increasing http.Client.Timeout
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func Get(url string) ([]byte, bool, error) {
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request, err := http.NewRequest("GET", url, nil)
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request.Header.Add("Accept-Encoding", "gzip")
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response, err := client.Do(request)
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if err != nil {
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return nil, true, err
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}
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defer response.Body.Close()
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var reader io.ReadCloser
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switch response.Header.Get("Content-Encoding") {
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case "gzip":
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reader, err = gzip.NewReader(response.Body)
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defer reader.Close()
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default:
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reader = response.Body
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}
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b, err := io.ReadAll(reader)
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if response.StatusCode >= 400 {
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retryable := response.StatusCode >= 500
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return nil, retryable, fmt.Errorf("%s: %s", url, response.Status)
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}
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if err != nil {
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return nil, false, err
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}
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return b, false, nil
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}
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func Head(url string) (http.Header, error) {
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r, err := client.Head(url)
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if err != nil {
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return nil, err
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}
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defer CloseResponse(r)
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if r.StatusCode >= 400 {
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return nil, fmt.Errorf("%s: %s", url, r.Status)
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}
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return r.Header, nil
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}
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func Delete(url string, jwt string) error {
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req, err := http.NewRequest("DELETE", url, nil)
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if jwt != "" {
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req.Header.Set("Authorization", "BEARER "+string(jwt))
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}
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if err != nil {
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return err
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}
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resp, e := client.Do(req)
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if e != nil {
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return e
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return err
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}
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switch resp.StatusCode {
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case http.StatusNotFound, http.StatusAccepted, http.StatusOK:
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return nil
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}
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m := make(map[string]interface{})
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if e := json.Unmarshal(body, &m); e == nil {
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if s, ok := m["error"].(string); ok {
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return errors.New(s)
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}
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}
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return errors.New(string(body))
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}
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func DeleteProxied(url string, jwt string) (body []byte, httpStatus int, err error) {
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req, err := http.NewRequest("DELETE", url, nil)
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if jwt != "" {
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req.Header.Set("Authorization", "BEARER "+string(jwt))
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}
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if err != nil {
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return
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}
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resp, err := client.Do(req)
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if err != nil {
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return
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}
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defer resp.Body.Close()
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body, err = io.ReadAll(resp.Body)
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if err != nil {
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return
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}
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httpStatus = resp.StatusCode
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return
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}
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func GetBufferStream(url string, values url.Values, allocatedBytes []byte, eachBuffer func([]byte)) error {
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r, err := client.PostForm(url, values)
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if err != nil {
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return err
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}
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defer CloseResponse(r)
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if r.StatusCode != 200 {
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return fmt.Errorf("%s: %s", url, r.Status)
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}
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for {
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n, err := r.Body.Read(allocatedBytes)
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if n > 0 {
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eachBuffer(allocatedBytes[:n])
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}
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if err != nil {
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if err == io.EOF {
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return nil
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}
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return err
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}
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}
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}
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func GetUrlStream(url string, values url.Values, readFn func(io.Reader) error) error {
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r, err := client.PostForm(url, values)
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if err != nil {
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return err
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}
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defer CloseResponse(r)
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if r.StatusCode != 200 {
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return fmt.Errorf("%s: %s", url, r.Status)
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}
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return readFn(r.Body)
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}
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func DownloadFile(fileUrl string, jwt string) (filename string, header http.Header, resp *http.Response, e error) {
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req, err := http.NewRequest("GET", fileUrl, nil)
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if err != nil {
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return "", nil, nil, err
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}
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if len(jwt) > 0 {
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req.Header.Set("Authorization", "BEARER "+jwt)
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}
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response, err := client.Do(req)
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if err != nil {
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return "", nil, nil, err
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}
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header = response.Header
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contentDisposition := response.Header["Content-Disposition"]
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if len(contentDisposition) > 0 {
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idx := strings.Index(contentDisposition[0], "filename=")
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if idx != -1 {
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filename = contentDisposition[0][idx+len("filename="):]
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filename = strings.Trim(filename, "\"")
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}
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}
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resp = response
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return
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}
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func Do(req *http.Request) (resp *http.Response, err error) {
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return client.Do(req)
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}
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func NormalizeUrl(url string) string {
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if strings.HasPrefix(url, "http://") || strings.HasPrefix(url, "https://") {
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return url
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}
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return "http://" + url
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}
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func ReadUrl(fileUrl string, cipherKey []byte, isContentCompressed bool, isFullChunk bool, offset int64, size int, buf []byte) (int64, error) {
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if cipherKey != nil {
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var n int
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_, err := readEncryptedUrl(fileUrl, cipherKey, isContentCompressed, isFullChunk, offset, size, func(data []byte) {
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n = copy(buf, data)
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})
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return int64(n), err
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}
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req, err := http.NewRequest("GET", fileUrl, nil)
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if err != nil {
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return 0, err
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}
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if !isFullChunk {
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req.Header.Add("Range", fmt.Sprintf("bytes=%d-%d", offset, offset+int64(size)-1))
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} else {
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req.Header.Set("Accept-Encoding", "gzip")
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}
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r, err := client.Do(req)
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if err != nil {
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return 0, err
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}
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defer r.Body.Close()
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if r.StatusCode >= 400 {
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return 0, fmt.Errorf("%s: %s", fileUrl, r.Status)
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}
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var reader io.ReadCloser
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contentEncoding := r.Header.Get("Content-Encoding")
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switch contentEncoding {
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case "gzip":
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reader, err = gzip.NewReader(r.Body)
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defer reader.Close()
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default:
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reader = r.Body
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}
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var (
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i, m int
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n int64
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)
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// refers to https://github.com/golang/go/blob/master/src/bytes/buffer.go#L199
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// commit id c170b14c2c1cfb2fd853a37add92a82fd6eb4318
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for {
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m, err = reader.Read(buf[i:])
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i += m
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n += int64(m)
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if err == io.EOF {
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return n, nil
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}
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if err != nil {
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return n, err
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}
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if n == int64(len(buf)) {
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break
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}
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}
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// drains the response body to avoid memory leak
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data, _ := io.ReadAll(reader)
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if len(data) != 0 {
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glog.V(1).Infof("%s reader has remaining %d bytes", contentEncoding, len(data))
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}
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return n, err
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}
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func ReadUrlAsStream(fileUrl string, cipherKey []byte, isContentGzipped bool, isFullChunk bool, offset int64, size int, fn func(data []byte)) (retryable bool, err error) {
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if cipherKey != nil {
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return readEncryptedUrl(fileUrl, cipherKey, isContentGzipped, isFullChunk, offset, size, fn)
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}
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req, err := http.NewRequest("GET", fileUrl, nil)
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if err != nil {
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return false, err
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}
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if isFullChunk {
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req.Header.Add("Accept-Encoding", "gzip")
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} else {
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req.Header.Add("Range", fmt.Sprintf("bytes=%d-%d", offset, offset+int64(size)-1))
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}
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r, err := client.Do(req)
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if err != nil {
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return true, err
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}
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defer CloseResponse(r)
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if r.StatusCode >= 400 {
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retryable = r.StatusCode >= 500
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return retryable, fmt.Errorf("%s: %s", fileUrl, r.Status)
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}
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var reader io.ReadCloser
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contentEncoding := r.Header.Get("Content-Encoding")
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switch contentEncoding {
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case "gzip":
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reader, err = gzip.NewReader(r.Body)
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defer reader.Close()
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default:
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reader = r.Body
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}
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var (
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m int
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)
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buf := make([]byte, 64*1024)
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for {
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m, err = reader.Read(buf)
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fn(buf[:m])
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if err == io.EOF {
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return false, nil
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}
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if err != nil {
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return true, err
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}
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}
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}
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func readEncryptedUrl(fileUrl string, cipherKey []byte, isContentCompressed bool, isFullChunk bool, offset int64, size int, fn func(data []byte)) (bool, error) {
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encryptedData, retryable, err := Get(fileUrl)
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if err != nil {
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return retryable, fmt.Errorf("fetch %s: %v", fileUrl, err)
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}
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decryptedData, err := Decrypt(encryptedData, CipherKey(cipherKey))
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if err != nil {
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return false, fmt.Errorf("decrypt %s: %v", fileUrl, err)
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}
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if isContentCompressed {
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decryptedData, err = DecompressData(decryptedData)
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if err != nil {
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glog.V(0).Infof("unzip decrypt %s: %v", fileUrl, err)
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}
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}
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if len(decryptedData) < int(offset)+size {
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return false, fmt.Errorf("read decrypted %s size %d [%d, %d)", fileUrl, len(decryptedData), offset, int(offset)+size)
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}
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if isFullChunk {
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fn(decryptedData)
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} else {
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fn(decryptedData[int(offset) : int(offset)+size])
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}
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return false, nil
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}
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func ReadUrlAsReaderCloser(fileUrl string, jwt string, rangeHeader string) (io.ReadCloser, error) {
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req, err := http.NewRequest("GET", fileUrl, nil)
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if err != nil {
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return nil, err
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}
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if rangeHeader != "" {
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req.Header.Add("Range", rangeHeader)
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} else {
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req.Header.Add("Accept-Encoding", "gzip")
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}
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if len(jwt) > 0 {
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req.Header.Set("Authorization", "BEARER "+jwt)
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}
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r, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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if r.StatusCode >= 400 {
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return nil, fmt.Errorf("%s: %s", fileUrl, r.Status)
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}
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var reader io.ReadCloser
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contentEncoding := r.Header.Get("Content-Encoding")
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switch contentEncoding {
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case "gzip":
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reader, err = gzip.NewReader(r.Body)
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defer reader.Close()
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default:
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reader = r.Body
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}
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return reader, nil
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}
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func CloseResponse(resp *http.Response) {
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reader := &CountingReader{reader: resp.Body}
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io.Copy(io.Discard, reader)
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resp.Body.Close()
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if reader.BytesRead > 0 {
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glog.V(1).Infof("response leftover %d bytes", reader.BytesRead)
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}
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}
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func CloseRequest(req *http.Request) {
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reader := &CountingReader{reader: req.Body}
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io.Copy(io.Discard, reader)
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req.Body.Close()
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if reader.BytesRead > 0 {
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glog.V(1).Infof("request leftover %d bytes", reader.BytesRead)
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}
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}
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type CountingReader struct {
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reader io.Reader
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BytesRead int
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}
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func (r *CountingReader) Read(p []byte) (n int, err error) {
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n, err = r.reader.Read(p)
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r.BytesRead += n
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return n, err
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}
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