Add search method in ResourceCache

contrail_api_cli/command.py

@@ -277,14 +277,8 @@ def get_completions(self, document, complete_event):
             # fq_name search
             text_before_cursor
         ]
-        searches = [s for s in searches if s in self.cache.trie]
-
-        if not searches:
-            return
-
         # limit list to 50 entries
-        resources = [self.cache.resources[p] for p in self.cache.trie[searches[0]]][:50]
-
+        resources = self.cache.search(searches, limit=50)
         for res in resources:
             rel_path = text_type(res.path.relative_to(ShellContext.current_path))
             if rel_path in ('.', '/', ''):

contrail_api_cli/resource.py

@@ -531,6 +531,23 @@ def __init__(self):
         Collection.register('created', self._add_resource)
         Collection.register('deleted', self._del_resource)
 
+    def search(self, paths, limit=None):
+        """Search in cache
+
+        :param strings: list of paths to get from the cache
+        :type strings: str list
+        :param limit: limit search results
+        :type limit: int
+
+        :rtype: Resource list
+        """
+        results = [p for p in paths if p in self.trie]
+        if not results:
+            return []
+        resources = [self.resources[p]
+                     for p in self.trie[results[0]]][:limit]
+        return resources
+
     def _action_in_trie(self, value, path, action):
         v = ""
         for c in value: