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Store SQL DDL deltas as well; attempt to upgrade the database on startup if it's too old

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This commit is contained in:
Paul "LeoNerd" Evans 2014-09-03 14:14:04 +01:00
parent 4777c1cd5b
commit 756e171ad0
4 changed files with 183 additions and 22 deletions
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22
synapse/app/homeserver.py
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@ -93,20 +93,28 @@ class SynapseHomeServer(HomeServer):
if row and row[0]:
user_version = row[0]
if user_version < SCHEMA_VERSION:
# TODO(paul): add some kind of intelligent fixup here
raise ValueError("Cannot use this database as the " +
"schema version (%d) does not match (%d)" %
(user_version, SCHEMA_VERSION)
if user_version > SCHEMA_VERSION:
raise ValueError("Cannot use this database as it is too " +
"new for the server to understand"
)
elif user_version < SCHEMA_VERSION:
logging.info("Upgrading database from version %d",
user_version
)
# Run every version since after the current version.
for v in range(user_version + 1, SCHEMA_VERSION + 1):
sql_script = read_schema("delta/v%d" % (v))
c.executescript(sql_script)
db_conn.commit()
else:
for sql_loc in SCHEMAS:
sql_script = read_schema(sql_loc)
c.executescript(sql_script)
db_conn.commit()
db_conn.commit()
c.execute("PRAGMA user_version = %d" % SCHEMA_VERSION)
c.close()