Fix repeated superuser creations after rename/removal (#263)

* Avoid creating superuser if variables are removed

Enables the removal of `TA_USERNAME` and/or `TA_PASSWORD` as a way of
preventing an additional superuser being created when another exists.

In the old code, `ELASTIC_USER` would never error due to the default, so
this replaces the loop with one requirement on `ELASTIC_PASSWORD`.

* Use .superuser_created to prevent re-creation

Creates an empty `.superuser_created` file after successful creation,
and uses this to skip the command on future runs. If the file doesn't
exist, then `TA_USERNAME` and `TA_PASSWORD` will also be required.

* The superuser password can't be empty

...well—it *can*—but the password input of the login form requires a
value so even though the account is created, you can't actually login.

* Parse createsuperuser output for 'exists' error

If a user already exists with the same name as the superuser being
created, the command fails with "Error: That name is already taken".

It's probably safe to assume that user is the one we expect. This parses
the output, treating it as successful so it can be skipped next time.

If it hits the catch-all, something probably failed so we exit.

* Use the cache for persistence

Updates the .superuser_created file to be placed in /cache so that it
gets persisted in a volume between config tweaks and container rebuilds.

Also makes `TA_PASSWORD` required always, because it seems to be needed
by tubearchivist/config/ to generate a secret key.

* Let it work outside Docker

If /cache doesn't exist (i.e. when it's not running in Docker), this
falls back to a `cache` dir in the current working directory instead.

Also renames the file to 'initsu.lock' rather than having it hidden.

* Use flexible fallback path for `celery` command
This commit is contained in:
Dave Shoreman 2022-06-22 12:29:46 +01:00 committed by GitHub
parent 49d33a2765
commit e9619c1242
No known key found for this signature in database
1 changed files with 26 additions and 10 deletions

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@ -5,13 +5,14 @@ if [[ -z "$ELASTIC_USER" ]]; then
export ELASTIC_USER=elastic
for each in "${ENV_VARS[@]}"; do
if ! [[ -v $each ]]; then
echo "missing environment variable $each"
exit 1
[[ -d $cachedir ]] || cachedir=.
required="Missing required environment variable"
[[ -f $lockfile ]] || : "${TA_USERNAME:?$required}"
: "${TA_PASSWORD:?$required}"
: "${ELASTIC_PASSWORD:?$required}"
# ugly nginx and uwsgi port overwrite with env vars
if [[ -n "$TA_PORT" ]]; then
@ -39,12 +40,27 @@ done
# start python application
python makemigrations
python migrate
python createsuperuser --noinput --name "$TA_USERNAME"
if [[ -f $lockfile ]]; then
echo -e "\e[33;1m[WARNING]\e[0m This is not the first run! Skipping" \
"superuser creation.\nTo force it, remove $lockfile"
output="$(python createsuperuser --noinput --name "$TA_USERNAME" 2>&1)"
case "$output" in
*"Superuser created successfully"*)
echo "$output" && touch $lockfile ;;
*"That name is already taken."*)
echo "Superuser already exists. Creation will be skipped on next start."
touch $lockfile ;;
*) echo "$output" && exit 1
python collectstatic --noinput -c
nginx &
celery -A home.tasks worker --loglevel=INFO &
celery -A home beat --loglevel=INFO \
-s "${BEAT_SCHEDULE_PATH:-/cache/celerybeat-schedule}" &
-s "${BEAT_SCHEDULE_PATH:-${cachedir}/celerybeat-schedule}" &
uwsgi --ini uwsgi.ini