Allow to load only some resources

- adding option to load only resources which starts with a given string.

It will allow to load in examples already created node resources.

Change-Id: Iaae9ba4e837d588ee6b806ed035e0ac763a9f1fc
Related-bug: #1537176
Related-bug: #1533609

solar/core/resource/resource.py

@@ -348,8 +348,13 @@ def load_updated(since=None, with_childs=True):
 # TODO
 
 
-def load_all():
-    candids = DBResource.updated.filter(StrInt.p_min(), StrInt.p_max())
+def load_all(startswith=None):
+    if startswith:
+        start = startswith
+        end = startswith + '~'
+        candids = DBResource.bucket.get_index("$key", start, end).results
+    else:
+        candids = DBResource.updated.filter(StrInt.p_min(), StrInt.p_max())
     return [Resource(r) for r in DBResource.multi_get(candids)]
 
 

solar/test/test_resource.py

@@ -166,3 +166,23 @@ input:
         with self.assertRaises(Exception):  # NOQA
             sample1.input_computable_change('value', '{{value}}')
         return sample1
+
+    def test_load_all(self):
+        sample_meta_dir = self.make_resource_meta("""
+id: sample
+handler: ansible
+version: 1.0.0
+input:
+  value:
+    schema: int
+    value: 0
+        """)
+
+        self.create_resource('sample1', sample_meta_dir, {'value': 1})
+        self.create_resource('sample2', sample_meta_dir, {'value': 1})
+        self.create_resource('x_sample1', sample_meta_dir, {'value': 1})
+
+        assert len(resource.load_all()) == 3
+        assert len(resource.load_all(startswith='sample')) == 2
+        assert len(resource.load_all(startswith='x_sample')) == 1
+        assert len(resource.load_all(startswith='nothing')) == 0