[feature] add blobs as a incoming api backend

We started with CouchDB due legacy system relying on it. This commit
adds the possibility of adding blobs as a IncomingAPI backend if blobs
is enabled on config file.

-- Resolves: #8868

2 files changed, 6 insertions, 1 deletions

diff --git a/src/leap/soledad/server/_blobs.py b/src/leap/soledad/server/_blobs.py
index 87b171fb..f6a8cbc6 100644
--- a/src/leap/soledad/server/_blobs.py
+++ b/src/leap/soledad/server/_blobs.py
@@ -256,4 +256,5 @@ class BlobsServerState(object):
         That method is just for compatibility with CouchServerState, so
         IncomingAPI can change backends.
         """
+        # TODO: deprecate/refactor it as it's here for compatibility.
         return self.backend
diff --git a/src/leap/soledad/server/_incoming.py b/src/leap/soledad/server/_incoming.py
index 6fdeb7ae..8d057ae9 100644
--- a/src/leap/soledad/server/_incoming.py
+++ b/src/leap/soledad/server/_incoming.py
@@ -40,6 +40,10 @@ def _get_backend_from_config():
     return CouchServerState(conf['couch_url'])
 
 
+def uses_legacy(db):
+    return hasattr(db, 'put_doc')
+
+
 class IncomingResource(Resource):
     isLeaf = True
 
@@ -51,7 +55,7 @@ class IncomingResource(Resource):
         uuid, doc_id = request.postpath
         scheme = EncryptionSchemes.PUBKEY
         db = self.factory.open_database(uuid)
-        if hasattr(db, 'put_doc'):
+        if uses_legacy(db):
             doc = ServerDocument(doc_id)
             doc.content = self.formatter.format(request.content.read(), scheme)
             db.put_doc(doc)