// Serve starts up a server. It initializes thumb and mosaic on-disk storage
// and blocks waiting for requests.
func Serve() {
if err := os.MkdirAll(MosaicsDir, 0755); err != nil {
log.Fatalf("Failed to create mosaics dir: %s\n", err)
}
if err := os.MkdirAll(ThumbsDir, 0755); err != nil {
log.Fatalf("Failed to create thumbs dir: %s\n", err)
}
mosaics = &mosaicInventory{
cache: mosaic.NewFileImageCache(MosaicsDir),
}
thumbs = &thumbInventory{
tagCacheFunc: func(tag string) mosaic.ImageCache {
path := path.Join(ThumbsDir, tag)
if err := os.MkdirAll(path, 0755); err != nil {
log.Fatalf("Failed to create cache dir: %s\n", err)
}
return mosaic.NewFileImageCache(path)
},
api: instagram.NewClient(),
images: make(map[string]*mosaic.ImageInventory),
states: make(map[string]chan bool),
}
log.Fatal(http.ListenAndServe(HostPort, nil))
}
func downloadImages(tag string, numImages int, inv *mosaic.ImageInventory) error {
api := instagram.NewClient()
fetcher := instagram.NewTagFetcher(api, tag)
if err := inv.Fetch(fetcher, numImages); err != nil {
return err
}
time.Sleep(1 * time.Second)
return nil
}