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dashboard: use 'ok' instead of 'hit' or 'miss' for bool return vals

Browse Source 
R=dsymonds, rsc
CC=golang-dev
https://golang.org/cl/5505054
This commit is contained in:
Andrew Gerrand 2011-12-21 21:12:03 +11:00
parent efa2246e42
commit 351f7efec4
2 changed files with 13 additions and 16 deletions
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27
misc/dashboard/app/build/cache.go
View File

@ -32,8 +32,8 @@ func invalidateCache(c appengine.Context) {
// cachedTodo gets the specified todo cache entry (if it exists) from the
// shared todo cache.
func cachedTodo(c appengine.Context, todoKey string) (todo *Todo, hit bool) {
t, _ := todoCache(c)
func cachedTodo(c appengine.Context, todoKey string) (todo *Todo, ok bool) {
t := todoCache(c)
if t == nil {
return nil, false
}
@ -41,7 +41,7 @@ func cachedTodo(c appengine.Context, todoKey string) (todo *Todo, hit bool) {
if todos == nil {
return nil, false
}
todo, hit = todos[todoKey]
todo, ok = todos[todoKey]
return
}
@ -50,17 +50,14 @@ func cachedTodo(c appengine.Context, todoKey string) (todo *Todo, hit bool) {
func cacheTodo(c appengine.Context, todoKey string, todo *Todo) {
// Get the todo cache record (or create a new one).
newItem := false
t, miss := todoCache(c)
if miss {
t := todoCache(c)
if t == nil {
newItem = true
t = &memcache.Item{
Key: todoCacheKey,
Value: []byte("{}"), // default is an empty JSON object
}
}
if t == nil {
return
}
// Unmarshal the JSON value.
todos := unmarshalTodo(c, t)
@ -98,15 +95,15 @@ func cacheTodo(c appengine.Context, todoKey string, todo *Todo) {
}
// todoCache gets the todo cache record from memcache (if it exists).
func todoCache(c appengine.Context) (item *memcache.Item, miss bool) {
func todoCache(c appengine.Context) *memcache.Item {
t, err := memcache.Get(c, todoCacheKey)
if err == memcache.ErrCacheMiss {
return nil, true
} else if err != nil {
c.Errorf("get todo cache: %v", err)
return nil, false
if err != nil {
if err != memcache.ErrCacheMiss {
c.Errorf("get todo cache: %v", err)
}
return nil
}
return t, false
return t
}
// unmarshalTodo decodes the given item's memcache value into a map.

2
misc/dashboard/app/build/handler.go
View File

@ -150,7 +150,7 @@ func todoHandler(r *http.Request) (interface{}, os.Error) {
c := appengine.NewContext(r)
todoKey := r.Form.Encode()
if t, hit := cachedTodo(c, todoKey); hit {
if t, ok := cachedTodo(c, todoKey); ok {
c.Debugf("cache hit")
return t, nil
}