func pollFetchAndPush(subObj *lib.Sub, img *image.Image,
imageServerAddress string, timeoutTime time.Time,
logger *log.Logger) error {
var generationCount uint64
deleteEarly := *deleteBeforeFetch
for ; time.Now().Before(timeoutTime); time.Sleep(time.Second) {
var pollReply sub.PollResponse
if err := pollAndBuildPointers(subObj.Client, &generationCount,
&pollReply); err != nil {
return err
}
if pollReply.FileSystem == nil {
continue
}
if deleteEarly {
deleteEarly = false
if deleteUnneededFiles(subObj.Client, pollReply.FileSystem,
img.FileSystem, logger) {
continue
}
}
subObj.FileSystem = pollReply.FileSystem
subObj.ObjectCache = pollReply.ObjectCache
startTime := showStart("lib.BuildMissingLists()")
objectsToFetch, objectsToPush := lib.BuildMissingLists(*subObj, img,
true, true, logger)
showTimeTaken(startTime)
if len(objectsToFetch) < 1 && len(objectsToPush) < 1 {
return nil
}
if len(objectsToFetch) > 0 {
startTime := showStart("Fetch()")
err := subObj.Client.RequestReply("Subd.Fetch", sub.FetchRequest{
ServerAddress: imageServerAddress,
Wait: true,
Hashes: objectsToFetch},
&sub.FetchResponse{})
if err != nil {
showBlankLine()
logger.Printf("Error calling %s:Subd.Fetch(%s): %s\n",
subObj.Hostname, imageServerAddress, err)
return err
}
showTimeTaken(startTime)
}
if len(objectsToPush) > 0 {
startTime := showStart("lib.PushObjects()")
err := lib.PushObjects(*subObj, objectsToPush, logger)
if err != nil {
showBlankLine()
return err
}
showTimeTaken(startTime)
}
}
return errors.New("timed out fetching and pushing objects")
}
