bridge: added methods to let frontends store/retrieve/delete private data

sat/memory/memory.py

@@ -39,6 +39,7 @@ from sat.memory.disco import Discovery
 from sat.memory.crypto import BlockCipher
 from sat.memory.crypto import PasswordHasher
 from sat.tools import config as tools_config
+from sat.tools.common import data_format
 import shortuuid
 import mimetypes
 import time
@@ -1153,6 +1154,27 @@ class Memory(object):
     def setDefault(self, name, category, callback, errback=None):
         return self.params.setDefault(name, category, callback, errback)
 
+    ## Private Data ##
+
+    def _privateDataSet(self, namespace, key, data_s, profile_key):
+        client = self.host.getClient(profile_key)
+        # we accept any type
+        data = data_format.deserialise(data_s, type_check=None)
+        return self.storage.setPrivateValue(
+            namespace, key, data, binary=True, profile=client.profile)
+
+    def _privateDataGet(self, namespace, key, profile_key):
+        client = self.host.getClient(profile_key)
+        d = self.storage.getPrivates(
+            namespace, [key], binary=True, profile=client.profile)
+        d.addCallback(lambda data_dict: data_format.serialise(data_dict.get(key)))
+        return d
+
+    def _privateDataDelete(self, namespace, key, profile_key):
+        client = self.host.getClient(profile_key)
+        return self.storage.delPrivateValue(
+            namespace, key, binary=True, profile=client.profile)
+
     ## Files ##
 
     def checkFilePermission(self, file_data, peer_jid, perms_to_check):