mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-03 00:49:13 +08:00
375 lines
8.6 KiB
Go
375 lines
8.6 KiB
Go
package command
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import (
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"archive/tar"
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"archive/zip"
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"bytes"
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"compress/gzip"
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"context"
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"crypto/md5"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"time"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/util"
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"golang.org/x/net/context/ctxhttp"
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)
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//copied from https://github.com/restic/restic/tree/master/internal/selfupdate
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// Release collects data about a single release on GitHub.
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type Release struct {
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Name string `json:"name"`
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TagName string `json:"tag_name"`
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Draft bool `json:"draft"`
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PreRelease bool `json:"prerelease"`
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PublishedAt time.Time `json:"published_at"`
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Assets []Asset `json:"assets"`
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Version string `json:"-"` // set manually in the code
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}
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// Asset is a file uploaded and attached to a release.
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type Asset struct {
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ID int `json:"id"`
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Name string `json:"name"`
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URL string `json:"url"`
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}
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const githubAPITimeout = 30 * time.Second
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// githubError is returned by the GitHub API, e.g. for rate-limiting.
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type githubError struct {
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Message string
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}
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//default version is not full version
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var isFullVersion = false
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var (
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updateOpt UpdateOptions
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)
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type UpdateOptions struct {
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Output *string
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}
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func init() {
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updateOpt.Output = cmdUpdate.Flag.String("output", "weed", "Save the latest weed as `filename`")
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cmdUpdate.Run = runUpdate
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}
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var cmdUpdate = &Command{
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UsageLine: "update [-output=weed]",
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Short: "get latest version from https://github.com/chrislusf/seaweedfs",
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Long: `get latest version from https://github.com/chrislusf/seaweedfs`,
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}
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func runUpdate(cmd *Command, args []string) bool {
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fi, err := os.Lstat(*updateOpt.Output)
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if err != nil {
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dirname := filepath.Dir(*updateOpt.Output)
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di, err := os.Lstat(dirname)
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if err != nil {
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glog.Fatalf("unable to find directory:%s", dirname)
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return false
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}
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if !di.Mode().IsDir() {
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glog.Fatalf("output parent path %v is not a directory, use --output to specify a different file path", dirname)
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return false
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}
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} else {
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if !fi.Mode().IsRegular() {
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glog.Fatalf("output path %v is not a normal file, use --output to specify a different file path", *updateOpt.Output)
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return false
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}
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}
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v, err := downloadLatestStableRelease(context.Background(), *updateOpt.Output)
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if err != nil {
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glog.Fatalf("unable to update weed to version %s: %v", err, v)
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return false
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}
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return true
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}
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func downloadLatestStableRelease(ctx context.Context, target string) (version string, err error) {
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currentVersion := util.VERSION_NUMBER
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rel, err := GitHubLatestRelease(ctx, "chrislusf", "seaweedfs")
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if err != nil {
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return "", err
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}
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if rel.Version == currentVersion {
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glog.V(0).Infof("weed is up to date\n")
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return currentVersion, nil
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}
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glog.V(0).Infof("latest version is %v\n", rel.Version)
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largeDiskSuffix := ""
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if util.VolumeSizeLimitGB == 8000 {
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largeDiskSuffix = "_large_disk"
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}
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fullSuffix := ""
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if isFullVersion {
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fullSuffix = "_full"
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}
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ext := "tar.gz"
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if runtime.GOOS == "windows" {
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ext = "zip"
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}
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suffix := fmt.Sprintf("%s_%s%s%s.%s", runtime.GOOS, runtime.GOARCH, fullSuffix, largeDiskSuffix, ext)
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md5Filename := fmt.Sprintf("%s.md5", suffix)
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_, md5Val, err := getGithubDataFile(ctx, rel.Assets, md5Filename)
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if err != nil {
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return "", err
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}
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downloadFilename, buf, err := getGithubDataFile(ctx, rel.Assets, suffix)
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if err != nil {
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return "", err
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}
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md5Ctx := md5.New()
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md5Ctx.Write(buf)
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binaryMd5 := md5Ctx.Sum(nil)
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if hex.EncodeToString(binaryMd5) != string(md5Val[0:32]) {
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glog.Errorf("md5:'%s' '%s'", hex.EncodeToString(binaryMd5), string(md5Val[0:32]))
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err = fmt.Errorf("binary md5sum doesn't match")
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return "", err
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}
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err = extractToFile(buf, downloadFilename, target)
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if err != nil {
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return "", err
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} else {
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glog.V(0).Infof("successfully updated weed to version %v\n", rel.Version)
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}
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return rel.Version, nil
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}
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// GitHubLatestRelease uses the GitHub API to get information about the latest
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// release of a repository.
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func GitHubLatestRelease(ctx context.Context, owner, repo string) (Release, error) {
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ctx, cancel := context.WithTimeout(ctx, githubAPITimeout)
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defer cancel()
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url := fmt.Sprintf("https://api.github.com/repos/%s/%s/releases/latest", owner, repo)
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req, err := http.NewRequest(http.MethodGet, url, nil)
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if err != nil {
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return Release{}, err
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}
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// pin API version 3
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req.Header.Set("Accept", "application/vnd.github.v3+json")
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res, err := ctxhttp.Do(ctx, http.DefaultClient, req)
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if err != nil {
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return Release{}, err
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}
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if res.StatusCode != http.StatusOK {
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content := res.Header.Get("Content-Type")
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if strings.Contains(content, "application/json") {
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// try to decode error message
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var msg githubError
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jerr := json.NewDecoder(res.Body).Decode(&msg)
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if jerr == nil {
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return Release{}, fmt.Errorf("unexpected status %v (%v) returned, message:\n %v", res.StatusCode, res.Status, msg.Message)
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}
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}
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_ = res.Body.Close()
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return Release{}, fmt.Errorf("unexpected status %v (%v) returned", res.StatusCode, res.Status)
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}
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buf, err := ioutil.ReadAll(res.Body)
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if err != nil {
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_ = res.Body.Close()
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return Release{}, err
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}
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err = res.Body.Close()
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if err != nil {
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return Release{}, err
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}
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var release Release
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err = json.Unmarshal(buf, &release)
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if err != nil {
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return Release{}, err
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}
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if release.TagName == "" {
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return Release{}, fmt.Errorf("tag name for latest release is empty")
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}
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release.Version = release.TagName
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return release, nil
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}
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func getGithubData(ctx context.Context, url string) ([]byte, error) {
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req, err := http.NewRequest(http.MethodGet, url, nil)
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if err != nil {
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return nil, err
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}
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// request binary data
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req.Header.Set("Accept", "application/octet-stream")
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res, err := ctxhttp.Do(ctx, http.DefaultClient, req)
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if err != nil {
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return nil, err
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}
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if res.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("unexpected status %v (%v) returned", res.StatusCode, res.Status)
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}
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buf, err := ioutil.ReadAll(res.Body)
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if err != nil {
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_ = res.Body.Close()
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return nil, err
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}
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err = res.Body.Close()
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if err != nil {
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return nil, err
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}
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return buf, nil
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}
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func getGithubDataFile(ctx context.Context, assets []Asset, suffix string) (filename string, data []byte, err error) {
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var url string
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for _, a := range assets {
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if strings.HasSuffix(a.Name, suffix) {
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url = a.URL
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filename = a.Name
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break
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}
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}
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if url == "" {
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return "", nil, fmt.Errorf("unable to find file with suffix %v", suffix)
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}
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glog.V(0).Infof("download %v\n", filename)
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data, err = getGithubData(ctx, url)
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if err != nil {
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return "", nil, err
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}
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return filename, data, nil
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}
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func extractToFile(buf []byte, filename, target string) error {
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var rd io.Reader = bytes.NewReader(buf)
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switch filepath.Ext(filename) {
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case ".gz":
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gr, err := gzip.NewReader(rd)
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if err != nil {
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return err
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}
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defer gr.Close()
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trd := tar.NewReader(gr)
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hdr, terr := trd.Next()
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if terr != nil {
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glog.Errorf("uncompress file(%s) failed:%s", hdr.Name, terr)
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return terr
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}
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rd = trd
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case ".zip":
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zrd, err := zip.NewReader(bytes.NewReader(buf), int64(len(buf)))
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if err != nil {
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return err
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}
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if len(zrd.File) != 1 {
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return fmt.Errorf("ZIP archive contains more than one file")
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}
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file, err := zrd.File[0].Open()
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if err != nil {
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return err
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}
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defer func() {
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_ = file.Close()
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}()
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rd = file
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}
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// Write everything to a temp file
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dir := filepath.Dir(target)
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new, err := ioutil.TempFile(dir, "weed")
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if err != nil {
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return err
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}
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n, err := io.Copy(new, rd)
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if err != nil {
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_ = new.Close()
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_ = os.Remove(new.Name())
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return err
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}
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if err = new.Sync(); err != nil {
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return err
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}
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if err = new.Close(); err != nil {
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return err
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}
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mode := os.FileMode(0755)
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// attempt to find the original mode
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if fi, err := os.Lstat(target); err == nil {
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mode = fi.Mode()
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}
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// Remove the original binary.
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if err := removeWeedBinary(dir, target); err != nil {
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return err
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}
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// Rename the temp file to the final location atomically.
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if err := os.Rename(new.Name(), target); err != nil {
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return err
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}
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glog.V(0).Infof("saved %d bytes in %v\n", n, target)
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return os.Chmod(target, mode)
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}
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// Rename (rather than remove) the running version. The running binary will be locked
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// on Windows and cannot be removed while still executing.
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func removeWeedBinary(dir, target string) error {
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if runtime.GOOS == "linux" {
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return nil
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}
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backup := filepath.Join(dir, filepath.Base(target)+".bak")
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if _, err := os.Stat(backup); err == nil {
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_ = os.Remove(backup)
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}
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if err := os.Rename(target, backup); err != nil {
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return fmt.Errorf("unable to rename target file: %v", err)
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}
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return nil
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}
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