Add dual writer for key and immutable storage

cic/cmd/export.py

@@ -12,7 +12,10 @@ from cic import (
         Proof,
         Processor,
         )
-from cic.output import HTTPWriter
+from cic.output import (
+        HTTPWriter,
+        KeyedWriterFactory,
+        )
 from cic.meta import (
         Meta,
         MetadataWriter,
@@ -66,8 +69,8 @@ def execute(config, eargs):
         MetadataSigner.gpg_path = os.path.join('/tmp')
         MetadataSigner.key_file_path = '/home/lash/src/client/cic/grassrootseconomics/cic-internal-integration/apps/cic-ussd/tests/data/pgp/privatekeys_meta.asc'
         MetadataSigner.gpg_passphrase = 'merman'
-        writers['proof'] = HTTPWriter
-        writers['attachment'] = HTTPWriter
+        writers['proof'] = KeyedWriterFactory(MetadataWriter, HTTPWriter).new
+        writers['attachment'] = KeyedWriterFactory(None, HTTPWriter).new
         writers['meta'] = MetadataWriter
         output_writer_path_meta = eargs.metadata_endpoint