Do not fail the entore solve if one of dependent contexts is absent

2 files changed, 23 insertions, 1 deletions

diff --git a/sugar_network/node/model.py b/sugar_network/node/model.py
index 77ee978..5d42583 100644
--- a/sugar_network/node/model.py
+++ b/sugar_network/node/model.py
@@ -334,7 +334,11 @@ def solve(volume, top_context, command=None, lsb_id=None, lsb_release=None,
         if context in context_clauses:
             return context_clauses[context]
         context = volume['context'][context]
-        enforce(context.available, http.NotFound, 'Context not found')
+
+        if not context.available:
+            _logger.trace('No %r context', context.guid)
+            return []
+
         releases = context['releases']
         clause = []
 
diff --git a/tests/units/node/node_model.py b/tests/units/node/node_model.py
index 369b0de..a4f5c86 100755
--- a/tests/units/node/node_model.py
+++ b/tests/units/node/node_model.py
@@ -1910,6 +1910,24 @@ class NodeModelTest(tests.Test):
             })
         self.assertEqual(None, model.solve(volume, context))
 
+    def test_solve_IgnoreAbsentContexts(self):
+        volume = Volume('master', [Context])
+        this.volume = volume
+
+        volume['context'].create({
+            'guid': 'context', 'type': ['activity'], 'title': {}, 'summary': {}, 'description': {}, 'releases': {
+                '2': {'value': {'bundles': {'*-*': {}}, 'stability': 'stable', 'version': [[2], 0], 'commands': {'activity': {'exec': 0}},
+                    'requires': spec.parse_requires('absent'), 'commands': {'activity': {'exec': 2}}}},
+                '1': {'value': {'bundles': {'*-*': {}}, 'stability': 'stable', 'version': [[1], 0], 'commands': {'activity': {'exec': 0}},
+                    'commands': {'activity': {'exec': 1}}}},
+                },
+            })
+
+        self.assertEqual({
+            'context': {'title': '', 'blob': '1', 'version': [[1], 0], 'command': ('activity', 1)},
+            },
+            model.solve(volume, 'context'))
+
     def test_load_bundle_Activity(self):
         volume = self.start_master()
         blobs = volume.blobs