forked from Cloud-Foundations/Dominator
/
getImageArchiveData.go
65 lines (61 loc) · 1.52 KB
/
getImageArchiveData.go
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package main
import (
"bufio"
"encoding/gob"
"encoding/json"
"fmt"
"os"
"path/filepath"
"github.com/Cloud-Foundations/Dominator/lib/fsutil"
"github.com/Cloud-Foundations/Dominator/lib/log"
"github.com/Cloud-Foundations/Dominator/lib/srpc"
"github.com/Cloud-Foundations/Dominator/proto/imageserver"
)
func getImageArchiveDataSubcommand(args []string,
logger log.DebugLogger) error {
imageClient, _ := getClients()
err := getImageArchiveDataAndWrite(imageClient, args[0], args[1])
if err != nil {
return fmt.Errorf("error getting image: %s", err)
}
return nil
}
func getImageArchiveDataAndWrite(imageClient *srpc.Client, name,
outputFilename string) error {
request := imageserver.GetImageRequest{
ImageName: name,
IgnoreFilesystem: true,
Timeout: *timeout,
}
var reply imageserver.GetImageResponse
err := imageClient.RequestReply("ImageServer.GetImage", request, &reply)
if err != nil {
return err
}
img := reply.Image
img.Filter = nil
img.Triggers = nil
var encoder srpc.Encoder
if outputFilename == "-" {
e := json.NewEncoder(os.Stdout)
e.SetIndent("", " ")
encoder = e
} else {
file, err := fsutil.CreateRenamingWriter(outputFilename,
fsutil.PublicFilePerms)
if err != nil {
return err
}
defer file.Close()
writer := bufio.NewWriter(file)
defer writer.Flush()
if filepath.Ext(outputFilename) == ".json" {
e := json.NewEncoder(writer)
e.SetIndent("", " ")
encoder = e
} else {
encoder = gob.NewEncoder(writer)
}
}
return encoder.Encode(img)
}