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create-database: Treat "zulip" db without "zerver_messages" as empty. 

A user who somehow got an empty `zulip` database, but without a
`zerver_messages` table in it, would get stuck in the installer at:

```
++ su postgres -c 'cd / && psql -v ON_ERROR_STOP=1 -Atc '\''SELECT COUNT(*) FROM zulip.zerver_message;'\'' zulip'
ERROR:  relation "zulip.zerver_message" does not exist
LINE 1: SELECT COUNT(*) FROM zulip.zerver_message;
                             ^
+ records=
```

Treat a failure to select from `zerver_messages` as having 0 messages,
and continue with the `DROP DATABASE IF EXISTS` / `CREATE DATABASE`
that `create-db.sql` usually does.

Fixes: #29110.
This commit is contained in:
Alex Vandiver 2024-03-08 12:38:45 -05:00
parent 7e9212a1a0
commit ed70b62ea8
1 changed files with 1 additions and 1 deletions
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2
scripts/setup/create-database
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@ -15,7 +15,7 @@ DATABASE_NAME=$(crudini --get /etc/zulip/zulip.conf postgresql database_name 2>/
DATABASE_USER=$(crudini --get /etc/zulip/zulip.conf postgresql database_user 2>/dev/null || echo zulip)
if [ "$(su "$POSTGRES_USER" -c "cd / && psql -v ON_ERROR_STOP=1 -Atc \"SELECT 1 FROM pg_database WHERE datname='$DATABASE_NAME';\"")" = "1" ]; then
records="$(su "$POSTGRES_USER" -c "cd / && psql -v ON_ERROR_STOP=1 -Atc 'SELECT COUNT(*) FROM $DATABASE_NAME.zerver_message;' $DATABASE_USER")"
records="$(su "$POSTGRES_USER" -c "cd / && psql -v ON_ERROR_STOP=1 -Atc 'SELECT COUNT(*) FROM $DATABASE_NAME.zerver_message;' $DATABASE_USER" || echo 0)"
if [ "$records" -gt 200 ]; then
set +x
echo "WARNING: This will delete your Zulip database which currently contains $records messages."