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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package cmd | ||
|
|
||
| import ( | ||
| "os" | ||
|
|
||
| "github.com/pokanop/nostromo/task" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| var force bool | ||
|
|
||
| // syncCmd represents the sync command | ||
| var syncCmd = &cobra.Command{ | ||
| Use: "sync [source] [options]", | ||
| Short: "Sync nostromo manifests from source locations", | ||
| Long: `Sync nostromo manifests from source locations and | ||
| makes commands available for execution. | ||
| Sync can be used to copy a single manifest to nostromo's config | ||
| folder. Or it can be used to update previously synchronized | ||
| manifests from respective data sources. | ||
| Providing a [source] file will sync only that file. Omitting it | ||
| directs nostromo to sync all manifests.`, | ||
| Args: cobra.MinimumNArgs(1), | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| os.Exit(task.Sync(force, args)) | ||
| }, | ||
| } | ||
|
|
||
| func init() { | ||
| rootCmd.AddCommand(syncCmd) | ||
|
|
||
| syncCmd.Flags().BoolVarP(&force, "force", "f", false, "Force sync manifest(s)") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| package config | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io/fs" | ||
| "io/ioutil" | ||
| "os" | ||
| "path/filepath" | ||
| "regexp" | ||
| "sort" | ||
| "time" | ||
|
|
||
| "github.com/pokanop/nostromo/log" | ||
| "github.com/pokanop/nostromo/model" | ||
| "github.com/pokanop/nostromo/pathutil" | ||
| ) | ||
|
|
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| // backupManifest at config path based on timestamp | ||
| func backupManifest(m *model.Manifest) error { | ||
| // Before saving backup, prune old files | ||
| pruneBackups(m) | ||
|
|
||
| // Prevent backups if max count is 0 | ||
| if m.Config.BackupCount == 0 { | ||
| return nil | ||
| } | ||
|
|
||
| // Create backups under base dir in a folder | ||
| backupDir, err := ensureBackupDir() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // Copy existing manifest to backup path | ||
| ts := fmt.Sprintf("%d", int64(time.Nanosecond)*time.Now().UnixNano()/int64(time.Millisecond)) | ||
| destinationFile := filepath.Join(backupDir, m.Name+"_"+ts+".yaml") | ||
| sourceFile := pathutil.Abs(m.Path) | ||
|
|
||
| // Check if manifest exists | ||
| if _, err := os.Stat(sourceFile); os.IsNotExist(err) { | ||
| return nil | ||
| } | ||
|
|
||
| input, err := ioutil.ReadFile(sourceFile) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = ioutil.WriteFile(destinationFile, input, 0644) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func pruneBackups(m *model.Manifest) { | ||
| backupDir, err := ensureBackupDir() | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| // Read all files, sort by timestamp, and drop items > max count | ||
| files, err := ioutil.ReadDir(backupDir) | ||
| if err != nil { | ||
| log.Warningf("unable to read backup dir: %s\n", err) | ||
| return | ||
| } | ||
|
|
||
| // Filter file list for matching names | ||
| matches := []fs.FileInfo{} | ||
| for _, file := range files { | ||
| if isMatch, _ := regexp.MatchString(fmt.Sprintf("%s_\\d+\\.yaml", m.Name), file.Name()); isMatch { | ||
| matches = append(matches, file) | ||
| } | ||
| } | ||
|
|
||
| sort.SliceStable(matches, func(i, j int) bool { | ||
| return matches[i].ModTime().After(matches[j].ModTime()) | ||
| }) | ||
|
|
||
| // Add one more to backup count since a new backup will be created | ||
| maxCount := m.Config.BackupCount - 1 | ||
| if maxCount < 0 { | ||
| maxCount = 0 | ||
| } | ||
| if len(matches) > maxCount { | ||
| for _, file := range matches[maxCount:] { | ||
| filename := filepath.Join(backupDir, file.Name()) | ||
| if err := os.Remove(filename); err != nil { | ||
| log.Warningf("failed to prune backup file %s: %s\n", filename, err) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func ensureBackupDir() (string, error) { | ||
| backupDir := backupsPath() | ||
| if err := pathutil.EnsurePath(backupDir); err != nil { | ||
| return "", err | ||
| } | ||
| return pathutil.Abs(backupDir), nil | ||
| } |
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