From 1999a0c396619694edefba7513cb488681c21d3b Mon Sep 17 00:00:00 2001
From: Folker Bernitt <fbernitt@thoughtworks.com>
Date: Wed, 2 Sep 2015 17:55:36 +0200
Subject: Move index key to SearchIndexStorageKey

- Issue #449
- next step: replace querier in services with this implementation
---
 .../pixelated/adapter/search/index_storage_key.py  | 42 +++++++++++++++++
 .../unit/adapter/search/test_index_storage_key.py  | 52 ++++++++++++++++++++++
 2 files changed, 94 insertions(+)
 create mode 100644 service/pixelated/adapter/search/index_storage_key.py
 create mode 100644 service/test/unit/adapter/search/test_index_storage_key.py

diff --git a/service/pixelated/adapter/search/index_storage_key.py b/service/pixelated/adapter/search/index_storage_key.py
new file mode 100644
index 00000000..b2761849
--- /dev/null
+++ b/service/pixelated/adapter/search/index_storage_key.py
@@ -0,0 +1,42 @@
+#
+# Copyright (c) 2015 ThoughtWorks, Inc.
+#
+# Pixelated is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pixelated is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
+import base64
+from twisted.internet import defer
+import os
+
+
+class SearchIndexStorageKey(object):
+    __slots__ = '_soledad'
+
+    def __init__(self, soledad):
+        self._soledad = soledad
+
+    @defer.inlineCallbacks
+    def get_or_create_key(self):
+        docs = yield self._soledad.get_from_index('by-type', 'index_key')
+
+        if len(docs):
+            key = docs[0].content['value']
+        else:
+            key = self._new_index_key()
+            yield self._store_key_in_soledad(key)
+        defer.returnValue(key)
+
+    def _new_index_key(self):
+        return os.urandom(64)  # 32 for encryption, 32 for hmac
+
+    def _store_key_in_soledad(self, index_key):
+        return self._soledad.create_doc(dict(type='index_key', value=base64.encodestring(index_key)))
diff --git a/service/test/unit/adapter/search/test_index_storage_key.py b/service/test/unit/adapter/search/test_index_storage_key.py
new file mode 100644
index 00000000..e60c69ef
--- /dev/null
+++ b/service/test/unit/adapter/search/test_index_storage_key.py
@@ -0,0 +1,52 @@
+#
+# Copyright (c) 2015 ThoughtWorks, Inc.
+#
+# Pixelated is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pixelated is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
+from leap.soledad.common.document import SoledadDocument
+from mockito import mock, when, unstub, verify
+from twisted.internet import defer
+from twisted.trial import unittest
+from pixelated.adapter.search.index_storage_key import SearchIndexStorageKey
+import os
+
+
+class TestSearchIndexStorageKey(unittest.TestCase):
+
+    def tearDown(self):
+        unstub()
+
+    @defer.inlineCallbacks
+    def test_get_or_create_key_returns_key(self):
+        soledad = mock()
+
+        when(soledad).get_from_index('by-type', 'index_key').thenReturn([SoledadDocument(json='{"value": "somekey"}')])
+
+        key = yield SearchIndexStorageKey(soledad).get_or_create_key()
+
+        self.assertEqual('somekey', key)
+
+    @defer.inlineCallbacks
+    def test_get_or_create_creates_key_if_not_exists(self):
+        expected_key = '\x8brN\xa3\xe5-\x828 \x95\x8d\n\xc6\x0c\x82\n\xd7!\xa9\xb0.\xcc\\h\xa9\x98\xe9V\xc1*<\xfe\xbb\x8f\xcd\x7f\x8c#\xff\xf9\x840\xdf{}\x97\xebS-*\xe2f\xf9B\xa9\xb1\x0c\x1d-C)\xc5\xa0B'
+        base64_encoded_key = 'i3JOo+UtgjgglY0KxgyCCtchqbAuzFxoqZjpVsEqPP67j81/jCP/+YQw33t9l+tTLSriZvlCqbEM\nHS1DKcWgQg==\n'
+        soledad = mock()
+
+        when(soledad).get_from_index('by-type', 'index_key').thenReturn([])
+        when(os).urandom(64).thenReturn(expected_key)
+
+        key = yield SearchIndexStorageKey(soledad).get_or_create_key()
+
+        self.assertEqual(expected_key, key)
+
+        verify(soledad).create_doc(dict(type='index_key', value=base64_encoded_key))
-- 
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