diff options
Diffstat (limited to 'client/go/cmd/clone.go')
-rw-r--r-- | client/go/cmd/clone.go | 99 |
1 files changed, 61 insertions, 38 deletions
diff --git a/client/go/cmd/clone.go b/client/go/cmd/clone.go index 9503a81debf..508ad49438f 100644 --- a/client/go/cmd/clone.go +++ b/client/go/cmd/clone.go @@ -6,11 +6,10 @@ package cmd import ( "archive/zip" + "errors" "io" - "io/ioutil" "log" "net/http" - "net/url" "os" "path/filepath" "strings" @@ -20,22 +19,29 @@ import ( "github.com/vespa-engine/vespa/client/go/util" ) -// Set this to test without downloading this file from github -var existingSampleAppsZip string +const sampleAppsCacheTTL = time.Hour * 168 // 1 week + var listApps bool +var forceClone bool func init() { rootCmd.AddCommand(cloneCmd) cloneCmd.Flags().BoolVarP(&listApps, "list", "l", false, "List available sample applications") + cloneCmd.Flags().BoolVarP(&forceClone, "force", "f", false, "Ignore cache and force downloading the latest sample application from GitHub") } var cloneCmd = &cobra.Command{ - // TODO: "application" and "list" subcommands? Use: "clone sample-application-path target-directory", Short: "Create files and directory structure for a new Vespa application from a sample application", - Long: `Creates an application package file structure. + Long: `Create files and directory structure for a new Vespa application +from a sample application. + +Sample applications are downloaded from +https://github.com/vespa-engine/sample-apps. -The application package is copied from a sample application in https://github.com/vespa-engine/sample-apps`, +By default sample applications are cached in the user's cache directory. This +directory can be overriden by setting the VESPA_CLI_CACHE_DIR environment +variable.`, Example: "$ vespa clone vespa-cloud/album-recommendation my-app", DisableAutoGenTag: true, Run: func(cmd *cobra.Command, args []string) { @@ -60,12 +66,7 @@ The application package is copied from a sample application in https://github.co func cloneApplication(source string, name string) { zipFile := getSampleAppsZip() - if zipFile == nil { - return - } - if existingSampleAppsZip == "" { // Indicates we created a temp file now - defer os.Remove(zipFile.Name()) - } + defer zipFile.Close() zipReader, zipOpenError := zip.OpenReader(zipFile.Name()) if zipOpenError != nil { @@ -101,45 +102,67 @@ func cloneApplication(source string, name string) { } } +func openOutputFile() (*os.File, error) { + cacheDir, err := vespaCliCacheDir() + if err != nil { + return nil, err + } + cacheFile := filepath.Join(cacheDir, "sample-apps-master.zip") + return os.OpenFile(cacheFile, os.O_RDWR|os.O_CREATE, 0755) +} + +func useCache(cacheFile *os.File) (bool, error) { + if forceClone { + return false, nil + } + stat, err := cacheFile.Stat() + if errors.Is(err, os.ErrNotExist) { + return false, nil + } else if err != nil { + return false, err + } + expiry := stat.ModTime().Add(sampleAppsCacheTTL) + return stat.Size() > 0 && time.Now().Before(expiry), nil +} + func getSampleAppsZip() *os.File { - if existingSampleAppsZip != "" { - existing, openExistingError := os.Open(existingSampleAppsZip) - if openExistingError != nil { - printErr(openExistingError, "Could not open existing sample apps zip file '", color.Cyan(existingSampleAppsZip), "'") - } - return existing + f, err := openOutputFile() + if err != nil { + fatalErr(err, "Could not determine location of cache file") + return nil + } + useCache, err := useCache(f) + if err != nil { + fatalErr(err, "Could not determine cache status", "Try ignoring the cache with the -f flag") + return nil + } + if useCache { + log.Print(color.Yellow("Using cached sample apps ...")) + return f } - // TODO: Cache it? log.Print(color.Yellow("Downloading sample apps ...")) // TODO: Spawn thread to indicate progress - zipUrl, _ := url.Parse("https://github.com/vespa-engine/sample-apps/archive/refs/heads/master.zip") - request := &http.Request{ - URL: zipUrl, - Method: "GET", + request, err := http.NewRequest("GET", "https://github.com/vespa-engine/sample-apps/archive/refs/heads/master.zip", nil) + if err != nil { + fatalErr(err, "Invalid URL") + return nil } - response, reqErr := util.HttpDo(request, time.Minute*60, "GitHub") - if reqErr != nil { - printErr(reqErr, "Could not download sample apps from GitHub") + response, err := util.HttpDo(request, time.Minute*60, "GitHub") + if err != nil { + fatalErr(err, "Could not download sample apps from GitHub") return nil } defer response.Body.Close() if response.StatusCode != 200 { - printErr(nil, "Could not download sample apps from GitHub: ", response.StatusCode) + fatalErr(nil, "Could not download sample apps from GitHub: ", response.StatusCode) return nil } - destination, tempFileError := ioutil.TempFile("", "prefix") - if tempFileError != nil { - printErr(tempFileError, "Could not create a temporary file to hold sample apps") - } - // destination, _ := os.Create("./" + name + "/sample-apps.zip") - // defer destination.Close() - _, err := io.Copy(destination, response.Body) - if err != nil { - printErr(err, "Could not download sample apps from GitHub") + if _, err := io.Copy(f, response.Body); err != nil { + fatalErr(err, "Could not write sample apps to file: ", f.Name()) return nil } - return destination + return f } func copy(f *zip.File, destinationDir string, zipEntryPrefix string) error { |