-
Notifications
You must be signed in to change notification settings - Fork 182
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
add auto start from snapshot (#3193)
Co-authored-by: KamiD <44460798+KamiD@users.noreply.github.com>
- Loading branch information
Showing
6 changed files
with
214 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,199 @@ | ||
| package app | ||
|
|
||
| import ( | ||
| "archive/tar" | ||
| "bytes" | ||
| "fmt" | ||
| "github.com/klauspost/pgzip" | ||
| "github.com/okex/exchain/libs/cosmos-sdk/types/errors" | ||
| "github.com/okex/exchain/libs/tendermint/libs/log" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/url" | ||
| "os" | ||
| "os/exec" | ||
| "path/filepath" | ||
| "runtime" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| func prepareSnapshotDataIfNeed(snapshotURL string, home string, logger log.Logger) { | ||
| if snapshotURL == "" { | ||
| return | ||
| } | ||
|
|
||
| snapshotHome := filepath.Join(home, ".download_snapshots") | ||
|
|
||
| // check whether the snapshot file has been downloaded | ||
| byteData, err := os.ReadFile(filepath.Join(snapshotHome, ".record")) | ||
| if err == nil && strings.Contains(string(byteData), snapshotURL) { | ||
| return | ||
| } | ||
|
|
||
| if _, err := url.Parse(snapshotURL); err != nil { | ||
| panic(errors.Wrap(err, "invalid snapshot URL")) | ||
| } | ||
|
|
||
| // download snapshot | ||
| snapshotFile, err := downloadSnapshot(snapshotURL, snapshotHome, logger) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| // uncompress snapshot | ||
| logger.Info("start to uncompress snapshot") | ||
| if err := extractTarGz(snapshotFile, snapshotHome); err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| // delete damaged data | ||
| logger.Info("start to delete damaged data") | ||
| if err := os.RemoveAll(filepath.Join(home, "data")); err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| // move snapshot data | ||
| logger.Info("start to move snapshot data") | ||
| if err := moveDir(filepath.Join(snapshotHome, "data"), filepath.Join(home, "data")); err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| os.Remove(snapshotFile) | ||
|
|
||
| os.WriteFile(filepath.Join(snapshotHome, ".record"), []byte(snapshotURL+"\n"), 0644) | ||
|
|
||
| logger.Info("snapshot data is ready, start node soon!") | ||
| } | ||
|
|
||
| func downloadSnapshot(url, outputPath string, logger log.Logger) (string, error) { | ||
| // create dir | ||
| _, err := os.Stat(outputPath) | ||
| if err != nil { | ||
| os.MkdirAll(outputPath, 0755) | ||
| } | ||
|
|
||
| fileName := url[strings.LastIndex(url, "/")+1:] | ||
| targetFile := filepath.Join(outputPath, fileName) | ||
|
|
||
| // check file exists | ||
| if _, err := os.Stat(targetFile); err == nil { | ||
| os.Remove(targetFile) | ||
| } | ||
|
|
||
| var stdoutProcessStatus bytes.Buffer | ||
|
|
||
| axel := exec.Command("axel", "-n", fmt.Sprintf("%d", runtime.NumCPU()), "-o", targetFile, url) | ||
| axel.Stdout = io.MultiWriter(ioutil.Discard, &stdoutProcessStatus) | ||
| done := make(chan struct{}) | ||
| defer close(done) | ||
|
|
||
| // print download detail | ||
| go func() { | ||
| tick := time.NewTicker(time.Millisecond * 50) | ||
| defer tick.Stop() | ||
| for { | ||
| select { | ||
| case <-done: | ||
| return | ||
| case <-tick.C: | ||
| bts := make([]byte, stdoutProcessStatus.Len()) | ||
| stdoutProcessStatus.Read(bts) | ||
| logger.Info(string(bts)) | ||
| } | ||
| } | ||
| }() | ||
|
|
||
| // run and wait | ||
| err = axel.Run() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| return targetFile, nil | ||
| } | ||
|
|
||
| func extractTarGz(tarGzFile, destinationDir string) error { | ||
| // open .tar.gz | ||
| file, err := os.Open(tarGzFile) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer file.Close() | ||
|
|
||
| // use gzip.Reader | ||
| gzReader, err := pgzip.NewReaderN(file, 1<<22, runtime.NumCPU()) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer gzReader.Close() | ||
|
|
||
| // create tar.Reader | ||
| tarReader := tar.NewReader(gzReader) | ||
|
|
||
| // uncompress file back to back | ||
| for { | ||
| header, err := tarReader.Next() | ||
| if err == io.EOF { | ||
| break | ||
| } | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if header == nil { | ||
| continue | ||
| } | ||
| target := filepath.Join(destinationDir, header.Name) | ||
|
|
||
| switch header.Typeflag { | ||
| case tar.TypeDir: | ||
| err = os.MkdirAll(target, 0755) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| case tar.TypeReg: | ||
| parent := filepath.Dir(target) | ||
| err = os.MkdirAll(parent, 0755) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| file, err := os.Create(target) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer file.Close() | ||
|
|
||
| _, err = io.Copy(file, tarReader) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func moveDir(sourceDir, destinationDir string) error { | ||
| sourceInfo, err := os.Stat(sourceDir) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if !sourceInfo.IsDir() { | ||
| return fmt.Errorf("%s isn't dir", sourceDir) | ||
| } | ||
|
|
||
| _, err = os.Stat(destinationDir) | ||
| if err == nil { | ||
| return fmt.Errorf("dest dir %s exists", destinationDir) | ||
| } | ||
|
|
||
| // move | ||
| err = os.Rename(sourceDir, destinationDir) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters