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Create the column nullable

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There's no real point in ever making the column non-nullable, and doing so
breaks the sytests.
This commit is contained in:
Richard van der Hoff 2018-07-26 14:54:04 +01:00
parent 5c1d301fd9
commit 51d7df1915
2 changed files with 13 additions and 9 deletions
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15
synapse/storage/schema/delta/50/make_event_content_nullable.py
View file

@ -60,6 +60,10 @@ logger = logging.getLogger(__name__)
def run_create(cur, database_engine, *args, **kwargs):
pass
def run_upgrade(cur, database_engine, *args, **kwargs):
if isinstance(database_engine, PostgresEngine):
cur.execute("""
ALTER TABLE events ALTER COLUMN content DROP NOT NULL;
@ -67,27 +71,22 @@ def run_create(cur, database_engine, *args, **kwargs):
return
# sqlite is an arse about this. ref: https://www.sqlite.org/lang_altertable.html
cur.execute("PRAGMA schema_version")
(oldver,) = cur.fetchone()
cur.execute("SELECT sql FROM sqlite_master WHERE tbl_name='events' AND type='table'")
(oldsql,) = cur.fetchone()
sql = oldsql.replace("content TEXT NOT NULL", "content TEXT")
if sql == oldsql:
raise Exception("Couldn't find null constraint to drop in %s" % oldsql)
logger.info("Replacing definition of 'events' with: %s", sql)
cur.execute("PRAGMA schema_version")
(oldver,) = cur.fetchone()
cur.execute("PRAGMA writable_schema=ON")
cur.execute(
"UPDATE sqlite_master SET sql=? WHERE tbl_name='events' AND type='table'",
(sql, ),
)
cur.execute("PRAGMA schema_version=%i" % (oldver+1,))
cur.execute("PRAGMA writable_schema=OFF")
def run_upgrade(*args, **kwargs):
pass

7
synapse/storage/schema/full_schemas/16/im.sql
View file

@ -19,7 +19,12 @@ CREATE TABLE IF NOT EXISTS events(
event_id TEXT NOT NULL,
type TEXT NOT NULL,
room_id TEXT NOT NULL,
content TEXT NOT NULL,
-- 'content' used to be created NULLable, but as of delta 50 we drop that constraint.
-- the hack we use to drop the constraint doesn't work for an in-memory sqlite
-- database, which breaks the sytests. Hence, we no longer make it nullable.
content TEXT,
unrecognized_keys TEXT,
processed BOOL NOT NULL,
outlier BOOL NOT NULL,