func (self *Application) HandleImage(h *tori.Handler) {
var metadata Metadata
var kind string
var content []byte
var sourceUrl string
var commonCacheKey string
var contentTypeCacheKey string
var contentDataCacheKey string
sourceUrl = self.Cryptographer.B64decode(h.Key("destination")[0])
commonCacheKey = sourceUrl
contentTypeCacheKey = "ct:" + commonCacheKey
contentDataCacheKey = "data:" + commonCacheKey
kind = string(self.CacheDriver.Load(contentTypeCacheKey))
content = self.CacheDriver.Load(contentDataCacheKey)
// Respond with the immediate cache.
if &kind != nil && content != nil {
self.respond(h, kind, &content)
return
}
// Respond with the data from the fetcher service.
metadata, content = self.FetcherService.Fetch(commonCacheKey)
self.respond(h, metadata.Type, &content)
self.CacheDriver.Save(contentTypeCacheKey, []byte(metadata.Type))
self.CacheDriver.Save(contentDataCacheKey, content)
}
func (self *Application) respond(h *tori.Handler, kind string, content *[]byte) {
h.SetContentType(kind)
h.WriteByte(*content)
}