1 files changed, 120 insertions, 0 deletions
diff --git a/src/leap/bitmask/mail/sync_hooks.py b/src/leap/bitmask/mail/sync_hooks.py
new file mode 100644
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+++ b/src/leap/bitmask/mail/sync_hooks.py
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+# -*- coding: utf-8 -*-
+# sync_hooks.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/>.
+"""
+Soledad PostSync Hooks.
+
+Process every new document of interest after every soledad synchronization,
+using the hooks that soledad exposes via plugins.
+"""
+import logging
+
+from re import compile as regex_compile
+
+from zope.interface import implements
+from twisted.internet import defer
+from twisted.plugin import IPlugin
+from twisted.python import log
+
+from leap.soledad.client.interfaces import ISoledadPostSyncPlugin
+from leap.mail import constants
+
+logger = logging.getLogger(__name__)
+
+
+def _get_doc_type_preffix(s):
+    return s[:2]
+
+
+class MailProcessingPostSyncHook(object):
+    implements(IPlugin, ISoledadPostSyncPlugin)
+
+    META_DOC_PREFFIX = _get_doc_type_preffix(constants.METAMSGID)
+    watched_doc_types = (META_DOC_PREFFIX, )
+
+    _account = None
+    _pending_docs = []
+    _processing_deferreds = []
+
+    def process_received_docs(self, doc_id_list):
+        if self._has_configured_account():
+            process_fun = self._make_uid_index
+        else:
+            self._processing_deferreds = []
+            process_fun = self._queue_doc_id
+
+        for doc_id in doc_id_list:
+            if _get_doc_type_preffix(doc_id) in self.watched_doc_types:
+                log.msg("Mail post-sync hook: processing %s" % doc_id)
+                process_fun(doc_id)
+
+        return defer.gatherResults(self._processing_deferreds)
+
+    def set_account(self, account):
+        self._account = account
+        if account:
+            self._process_queued_docs()
+
+    def _has_configured_account(self):
+        return self._account is not None
+
+    def _queue_doc_id(self, doc_id):
+        self._pending_docs.append(doc_id)
+
+    def _make_uid_index(self, mdoc_id):
+        indexer = self._account.mbox_indexer
+        mbox_uuid = _get_mbox_uuid(mdoc_id)
+        if mbox_uuid:
+            chash = _get_chash_from_mdoc(mdoc_id)
+            logger.debug("Making index table for %s:%s" % (mbox_uuid, chash))
+            index_docid = constants.METAMSGID.format(
+                mbox_uuid=mbox_uuid.replace('-', '_'),
+                chash=chash)
+            # XXX could avoid creating table if I track which ones I already
+            # have seen -- but make sure *it's already created* before
+            # inserting the index entry!.
+            d = indexer.create_table(mbox_uuid)
+            d.addBoth(lambda _: indexer.insert_doc(mbox_uuid, index_docid))
+            self._processing_deferreds.append(d)
+
+    def _process_queued_docs(self):
+        assert(self._has_configured_account())
+        pending = self._pending_docs
+        log.msg("Mail post-sync hook: processing queued docs")
+
+        def remove_pending_docs(res):
+            self._pending_docs = []
+            return res
+
+        d = self.process_received_docs(pending)
+        d.addCallback(remove_pending_docs)
+        return d
+
+
+_mbox_uuid_regex = regex_compile(constants.METAMSGID_MBOX_RE)
+_mdoc_chash_regex = regex_compile(constants.METAMSGID_CHASH_RE)
+
+
+def _get_mbox_uuid(doc_id):
+    matches = _mbox_uuid_regex.findall(doc_id)
+    if matches:
+        return matches[0].replace('_', '-')
+
+
+def _get_chash_from_mdoc(doc_id):
+    matches = _mdoc_chash_regex.findall(doc_id)
+    if matches:
+        return matches[0]