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-rw-r--r--scripts/migration/0.8.2/migrate_couch_schema/__init__.py17
1 files changed, 13 insertions, 4 deletions
diff --git a/scripts/migration/0.8.2/migrate_couch_schema/__init__.py b/scripts/migration/0.8.2/migrate_couch_schema/__init__.py
index edf671ae..f0b456e4 100644
--- a/scripts/migration/0.8.2/migrate_couch_schema/__init__.py
+++ b/scripts/migration/0.8.2/migrate_couch_schema/__init__.py
@@ -32,9 +32,7 @@ def _get_couch_server(couch_url):
def _is_migrateable(db):
config_doc = db.get('u1db_config')
- if config_doc is None:
- return False
- return True
+ return bool(config_doc)
def _get_transaction_log(db):
@@ -126,6 +124,8 @@ def _migrate_config_doc(db, do_migrate):
logger.info("[%s] moving config doc: %s -> %s"
% (db.name, old_doc['_id'], new_doc['_id']))
if do_migrate:
+ # the config doc must not exist, otherwise we would have skipped this
+ # database.
db.save(new_doc)
db.delete(old_doc)
@@ -167,7 +167,16 @@ def _migrate_sync_docs(db, do_migrate):
logger.debug("[%s] moving sync doc: %s -> %s"
% (db.name, old_id, new_id))
if do_migrate:
- db.save(new_doc)
+ try:
+ db.save(new_doc)
+ except ResourceConflict:
+ # this sync document already exists. if documents are the same,
+ # continue with migration.
+ existing_doc = db.get(new_id)
+ for key in [GENERATION_KEY, TRANSACTION_ID_KEY,
+ REPLICA_UID_KEY]:
+ if existing_doc[key] != new_doc[key]:
+ raise
db.delete(old_doc)