//DispatchJSON returns the json view of a namespace
func DispatchJSON(w http.ResponseWriter, r *http.Request) {
con := data.MakeContext(r)
// get namespace
namespace := mux.Vars(r)["namespace"]
if namespace == "" {
w.WriteHeader(http.StatusInternalServerError)
return
}
is, _, err := data.GetNewestItems(con, namespace, 1, "")
if err != nil {
con.Log.Errorf("Error while getting 1 item for update/json. Error %v", err)
w.WriteHeader(http.StatusInternalServerError)
return
}
var returnee jsonReturn
if len(is) == 0 {
returnee.LastUpdate = time.Date(1970, time.January, 1, 0, 0, 0, 0, time.UTC).Unix()
} else {
returnee.LastUpdate = is[0].CreatedAt.Unix()
}
s, err := json.Marshal(returnee)
if err != nil {
con.Log.Errorf("Error at mashaling in update/json. Error: %v", err)
w.WriteHeader(http.StatusInternalServerError)
return
}
con.Log.Infof("returning: %v", returnee)
w.Write(s)
}
//DispatchJSON returns the json view of a namespace
func DispatchJSON(w http.ResponseWriter, r *http.Request) {
con := data.MakeContext(r)
// get namespace
namespace := mux.Vars(r)["namespace"]
if namespace == "" {
w.WriteHeader(http.StatusInternalServerError)
return
}
if err := r.ParseForm(); err != nil {
con.Log.Errorf("Error at in /show/json @ ParseForm. Error: %v", err)
w.WriteHeader(http.StatusInternalServerError)
return
}
cursor := r.FormValue("cursor")
// no cursos == first elements, may be in the cache
if cursor == "" {
cache, err := data.ReadJSONCache(con, namespace)
if err == nil {
w.Write(cache)
return
}
if err == memcache.ErrCacheMiss {
con.Log.Infof("Cache miss for namespace %v", namespace)
} else {
con.Log.Errorf("Error at in rss.dispatch while reading the cache. Error: %v", err)
}
}
var returnee jsonReturn
var err error
returnee.Items, returnee.Cursor, err = data.GetNewestItems(con, namespace, 20, cursor)
if err != nil {
con.Log.Errorf("Error at in /show/json @ GetNewestItem. Error: %v", err)
w.WriteHeader(http.StatusInternalServerError)
return
}
con.Log.Infof("items: %v", returnee.Items)
con.Log.Infof("cursor: %v", returnee.Cursor)
s, err := json.Marshal(returnee)
if err != nil {
con.Log.Errorf("Error at mashaling in www.json.dispatch. Error: %v", err)
w.WriteHeader(http.StatusInternalServerError)
return
}
// only store values in cache for the first entries
if cursor == "" {
if err := data.CacheJSON(con, namespace, s); err != nil {
con.Log.Errorf("Error at storing the JSON in the cache. Error: %v", err)
}
}
w.Write(s)
}