// Get the content of a specified page and check if it exists
func getPage(identifier string, r *http.Request) (bool, Pages) {
// TODO: Compile page list to make a check without lookup in the datastore
c := appengine.NewContext(r)
// Check if we have the item in the cache
cachedItem, cacheStatus := cache.GetCache(r, "getPage-"+identifier)
if cacheStatus == true {
var pages Pages
pPages := bytes.NewBuffer(cachedItem)
decPages := gob.NewDecoder(pPages)
decPages.Decode(&pages)
return true, pages
}
// We don't have it in the cache, do a lookup and store it to the cache
var page Pages
key := datastore.NewKey(c, "Pages", identifier, 0, nil)
if err := datastore.Get(c, key, &page); err != nil {
return false, Pages{}
}
// Found it!
cachedPage := Pages{Identifier: key.StringID(), URL: page.URL, Title: page.Title, ContentString: template.HTML(page.Content)}
// Add it to the cache
mPages := new(bytes.Buffer) //initialize a *bytes.Buffer
encPages := gob.NewEncoder(mPages)
encPages.Encode(cachedPage)
cache.AddCache(r, "getPage-"+identifier, mPages.Bytes())
return true, cachedPage
}
// This functions get all pages
func getAllPages(w http.ResponseWriter, r *http.Request) []Pages {
// Check if we have the item in the cache
cachedItem, cacheStatus := cache.GetCache(r, "getAllPages")
if cacheStatus == true {
var pages []Pages
pPages := bytes.NewBuffer(cachedItem)
decPages := gob.NewDecoder(pPages)
decPages.Decode(&pages)
return pages
}
// We don't have it in the cache, make a query and store it to the cache
c := appengine.NewContext(r)
q := datastore.NewQuery("Pages")
var pages []Pages
keys, err := q.GetAll(c, &pages)
if err != nil {
errorHandler.Error(w, r, err.Error())
return []Pages{}
}
models := make([]Pages, len(pages))
for i := 0; i < len(pages); i++ {
models[i].Identifier = keys[i].StringID()
models[i].URL = pages[i].URL
models[i].Title = pages[i].Title
}
// Add it to the cache
mModels := new(bytes.Buffer) //initialize a *bytes.Buffer
encModels := gob.NewEncoder(mModels)
encModels.Encode(models)
cache.AddCache(r, "getAllPages", mModels.Bytes())
return models
}
func getPost(w http.ResponseWriter, r *http.Request, Seq int) Post {
cachedItem, cacheStatus := cache.GetCache(r, "post-"+strconv.Itoa(Seq))
if cacheStatus == true {
var post Post
buffPost := bytes.NewBuffer(cachedItem)
decPost := gob.NewDecoder(buffPost)
decPost.Decode(&post)
return post
}
c := appengine.NewContext(r)
q := datastore.NewQuery("Post").Filter("Sequence=", Seq)
var p []Post
q.GetAll(c, &p)
if p != nil {
post := p[0]
post.ContentString = string(post.Content)
// Add Cache
mPost := new(bytes.Buffer)
encPost := gob.NewEncoder(mPost)
encPost.Encode(post)
cache.AddCache(r, "post-"+strconv.Itoa(Seq), mPost.Bytes())
return post
}
var nilPost Post
return nilPost
}
func getCount(w http.ResponseWriter, r *http.Request) int64 {
cachedItem, cacheStatus := cache.GetCache(r, "Counter")
if cacheStatus == true {
var counter Counter
buffCount := bytes.NewBuffer(cachedItem)
decCount := gob.NewDecoder(buffCount)
decCount.Decode(&counter)
return counter.Count
}
c := appengine.NewContext(r)
var counter Counter
key := datastore.NewKey(c, "Counter", "", 1, nil)
datastore.Get(c, key, &counter)
if counter.Count != 0 {
// Add Cache
mCount := new(bytes.Buffer)
encCount := gob.NewEncoder(mCount)
encCount.Encode(counter)
cache.AddCache(r, "Counter", mCount.Bytes())
return counter.Count
}
return 0
}
//Get the menu
// TODO: It's ugly to have it here, maybe it should on another place...
func getMenu(r *http.Request) []Navigation {
var navigation []Navigation
// Check if we have the item in the cache
cachedItem, cacheStatus := cache.GetCache(r, "getMenu")
if cacheStatus == true {
pNavigation := bytes.NewBuffer(cachedItem)
decNavigation := gob.NewDecoder(pNavigation)
decNavigation.Decode(&navigation)
} else {
// Get it and cache
c := appengine.NewContext(r)
q := datastore.NewQuery("Menu").Order("Order")
var navigation []Navigation
q.GetAll(c, &navigation)
mModels := new(bytes.Buffer) //initialize a *bytes.Buffer
encModels := gob.NewEncoder(mModels)
encModels.Encode(navigation)
cache.AddCache(r, "getMenu", mModels.Bytes())
}
for key := range navigation {
if navigation[key].NavLink == r.URL.Path {
navigation[key].Active = true
}
}
return navigation
}
/*
* Returns the content of the robots.txt
*/
func getRobot(r *http.Request) []byte {
// Check if we have the robot in the cache
cachedItem, cacheStatus := cache.GetCache(r, "getRobot")
if cacheStatus == true {
return cachedItem
}
// Let's query
c := appengine.NewContext(r)
key := datastore.NewKey(c, "Robots", "Robots.txt", 0, nil)
var robots Robots
datastore.Get(c, key, &robots)
cache.AddCache(r, "getRobot", robots.Content)
return robots.Content
}
