func (app *App) CheckFiles(
settings config.Settings,
userInterface ui.UserInterface) (err error) {
localDescriptor := app.GetLocalDescriptor()
remoteDescriptor := app.GetRemoteDescriptor()
if remoteDescriptor == nil {
log.Notice("Skipping file check, as the remote descriptor is missing")
return nil
}
userInterface.SetHeader("Checking the app files")
log.Notice("Computing differences...")
packagesToUpdate := app.getPackagesToUpdate()
if len(packagesToUpdate) == 0 {
log.Notice("All the packages are up-to-date")
return nil
}
if localDescriptor != nil && caravel.FileExists(app.GetLocalDescriptorPath()) {
log.Info("Deleting the local descriptor before starting the update process...")
err = os.Remove(app.GetLocalDescriptorPath())
if err != nil {
return err
}
log.Notice("Local descriptor deleted")
}
retrieveAllPackages := (len(packagesToUpdate) == len(remoteDescriptor.GetPackageVersions()))
log.Notice("Must retrieve all the remote packages? %v", retrieveAllPackages)
if retrieveAllPackages {
log.Info("Removing app files dir...")
err = os.RemoveAll(app.filesDirectory)
if err != nil {
return err
}
log.Notice("App files dir removed")
}
for packageIndex, packageName := range packagesToUpdate {
userInterface.SetHeader(
fmt.Sprintf("Updating package %v of %v: %v",
packageIndex+1,
len(packagesToUpdate),
packageName))
log.Notice("Downloading %v...", packageName)
err = app.installPackage(
packageName,
settings,
func(retrievedSize int64, totalSize int64) {
log.Notice("Retrieved: %v / %v bytes", retrievedSize, totalSize)
userInterface.SetProgress(float64(retrievedSize) / float64(totalSize))
})
if err != nil {
return err
}
}
log.Notice("App files checked")
return nil
}
