1 files changed, 101 insertions, 0 deletions
diff --git a/client/src/leap/soledad/client/http_target/send.py b/client/src/leap/soledad/client/http_target/send.py
new file mode 100644
index 00000000..de18df8b
--- /dev/null
+++ b/client/src/leap/soledad/client/http_target/send.py
@@ -0,0 +1,101 @@
+# -*- coding: utf-8 -*-
+# http_target.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+import json
+import logging
+from twisted.internet import defer
+from leap.soledad.client.events import emit
+from leap.soledad.client.events import SOLEDAD_SYNC_SEND_STATUS
+from leap.soledad.client.http_target.support import RequestBody
+logger = logging.getLogger(__name__)
+
+
+class HTTPDocSender(object):
+
+    @defer.inlineCallbacks
+    def _send_docs(self, docs_by_generation, last_known_generation,
+                   last_known_trans_id, sync_id):
+
+        if not docs_by_generation:
+            defer.returnValue([None, None])
+
+        # add remote replica metadata to the request
+        initial_body = RequestBody(
+            last_known_generation=last_known_generation,
+            last_known_trans_id=last_known_trans_id,
+            sync_id=sync_id,
+            ensure=self._ensure_callback is not None)
+        total = len(docs_by_generation)
+        entries = yield self._entries_from_docs(initial_body, docs_by_generation)
+        while len(entries):
+            result = yield self._http_request(
+                self._url,
+                method='POST',
+                body=entries.remove(1),
+                content_type='application/x-soledad-sync-put')
+            idx = total - len(entries)
+            if self._defer_encryption:
+                self._delete_sent(idx, docs_by_generation)
+            _emit_send(idx, total)
+        response_dict = json.loads(result)[0]
+        gen_after_send = response_dict['new_generation']
+        trans_id_after_send = response_dict['new_transaction_id']
+        defer.returnValue([gen_after_send, trans_id_after_send])
+
+    def _delete_sent(self, idx, docs_by_generation):
+        doc = docs_by_generation[idx][0]
+        self._sync_enc_pool.delete_encrypted_doc(
+            doc.doc_id, doc.rev)
+
+    @defer.inlineCallbacks
+    def _entries_from_docs(self, initial_body, docs_by_generation):
+        number_of_docs = len(docs_by_generation)
+        for idx, (doc, gen, trans_id) in enumerate(docs_by_generation, 1):
+            content = yield self._encrypt_doc(doc)
+            initial_body.insert_info(
+                id=doc.doc_id, rev=doc.rev, content=content, gen=gen,
+                trans_id=trans_id, number_of_docs=number_of_docs,
+                doc_idx=idx)
+        defer.returnValue(initial_body)
+
+    def _encrypt_doc(self, doc):
+        d = None
+        if doc.is_tombstone():
+            d = defer.succeed(None)
+        elif not self._defer_encryption:
+            # fallback case, for tests
+            d = defer.succeed(self._crypto.encrypt_doc(doc))
+        else:
+
+            def _maybe_encrypt_doc_inline(doc_json):
+                if doc_json is None:
+                    # the document is not marked as tombstone, but we got
+                    # nothing from the sync db. As it is not encrypted
+                    # yet, we force inline encryption.
+                    return self._crypto.encrypt_doc(doc)
+                return doc_json
+
+            d = self._sync_enc_pool.get_encrypted_doc(doc.doc_id, doc.rev)
+            d.addCallback(_maybe_encrypt_doc_inline)
+        return d
+
+
+def _emit_send(idx, total):
+    msg = "%d/%d" % (idx, total)
+    emit(
+        SOLEDAD_SYNC_SEND_STATUS,
+        "Soledad sync send status: %s" % msg)
+    logger.debug("Sync send status: %s" % msg)