Make cache API public

src/cache.rs

@@ -59,21 +59,21 @@ struct Cache {
 }
 
 impl Cache {
-    fn new() -> Cache {
+    pub fn new() -> Cache {
         Cache {
             user_tokens: HashMap::new()
         }
     }
 
-    fn load_user_token(&self, owner: String) -> Option<&UserToken> {
+    pub fn load_user_token(&self, owner: String) -> Option<&UserToken> {
         return self.user_tokens.get(&owner);
     }
 
-    fn save_user_token(&self, owner: String, token: UserToken) {
+    pub fn save_user_token(&self, owner: String, token: UserToken) {
         self.user_tokens.insert(owner, token);
     }
 
-    fn cleanup_tokens(&self) {
+    pub fn cleanup_tokens(&self) {
         for (owner, token) in self.user_tokens {
             if token.is_expired() {
                 self.user_tokens.remove(&owner);
@@ -83,5 +83,5 @@ impl Cache {
 }
 
 lazy_static! {
-    static ref CACHE: Cache = Cache::new();
+    pub static ref CACHE: Cache = Cache::new();
 }