Imports github.com/prometheus/client_golang/prometheus github.com/prometheus/client_golang/prometheus/promauto github.com/prometheus/client_golang/prometheus/promhttp github.com/h2non/bimg github.com/thraxil/randwalk github.com/thraxil/resize github.com/go-kit/log Standard library imports bytes context crypto/sha1 encoding/json errors expvar flag fmt html/template image io math/rand mime/multipart net/http net/textproto net/url os os/signal path/filepath runtime sort strings sync syscall time