Files @ 11cae16e5a5d
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Location: kallithea/init.d/kallithea-daemon-debian - annotation

mads
setup: use old importlib_metadata version to fix kombu failing on python < 3.8

Many libraries use the importlib_metadata library as fallback when running on
Python versions older than 3.8 . For example setuptools when easy_install is
used for install the Kallithea console_scripts entrypoints in the bin folder.
The dependencies on importlib_metadata were indirect and without constrains on
version number.

The problem is that Celery uses Kombu, which (on Python < 3.8) uses
importlib_metadata in a way that is incompatible with importlib_metadata > 5.

Most obvious, building docs failed as:
Running Sphinx v5.1.1

Configuration error:
There is a programmable error in your configuration file:

Traceback (most recent call last):
File ".../kallithea/venv/lib64/python3.7/site-packages/sphinx/config.py", line 347, in eval_config_file
exec(code, namespace)
File ".../kallithea/docs/conf.py", line 17, in <module>
import kallithea
File ".../kallithea/kallithea/__init__.py", line 45, in <module>
CELERY_APP = celery.Celery() # needed at import time but is lazy and can be configured later
File ".../kallithea/venv/lib64/python3.7/site-packages/celery/local.py", line 492, in __getattr__
[name])
File ".../kallithea/venv/lib64/python3.7/site-packages/celery/app/__init__.py", line 2, in <module>
from celery import _state
File ".../kallithea/venv/lib64/python3.7/site-packages/celery/_state.py", line 15, in <module>
from celery.utils.threads import LocalStack
File ".../kallithea/venv/lib64/python3.7/site-packages/celery/utils/__init__.py", line 16, in <module>
from .nodenames import nodename, nodesplit, worker_direct
File ".../kallithea/venv/lib64/python3.7/site-packages/celery/utils/nodenames.py", line 6, in <module>
from kombu.entity import Exchange, Queue
File ".../kallithea/venv/lib64/python3.7/site-packages/kombu/entity.py", line 7, in <module>
from .serialization import prepare_accept_content
File ".../kallithea/venv/lib64/python3.7/site-packages/kombu/serialization.py", line 440, in <module>
for ep, args in entrypoints('kombu.serializers'): # pragma: no cover
File ".../kallithea/venv/lib64/python3.7/site-packages/kombu/utils/compat.py", line 82, in entrypoints
for ep in importlib_metadata.entry_points().get(namespace, [])
AttributeError: 'EntryPoints' object has no attribute 'get'

That made readthedocs builds fail, when it in the default web configuration
used Python 3.7 .

Fixed by introducing an explicit dependency on importlib_metadata < 5.
#!/bin/sh -e
########################################
#### THIS IS A DEBIAN INIT.D SCRIPT ####
########################################

### BEGIN INIT INFO
# Provides:          kallithea
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts instance of kallithea
# Description:       starts instance of kallithea using start-stop-daemon
### END INIT INFO

APP_NAME="kallithea"
APP_HOMEDIR="opt"
APP_PATH="/$APP_HOMEDIR/$APP_NAME"

CONF_NAME="production.ini"

PID_PATH="$APP_PATH/$APP_NAME.pid"
LOG_PATH="$APP_PATH/$APP_NAME.log"

PYTHON_PATH="/$APP_HOMEDIR/$APP_NAME-venv"

RUN_AS="root"

DAEMON="$PYTHON_PATH/bin/gearbox"

DAEMON_OPTS="serve --daemon \
 --user=$RUN_AS \
 --group=$RUN_AS \
 --pid-file=$PID_PATH \
 --log-file=$LOG_PATH -c $APP_PATH/$CONF_NAME"


start() {
  echo "Starting $APP_NAME"
  start-stop-daemon -d $APP_PATH \
      --start --quiet \
      --pidfile $PID_PATH \
      --user $RUN_AS \
      --exec $DAEMON -- $DAEMON_OPTS
}

stop() {
  echo "Stopping $APP_NAME"
  start-stop-daemon -d $APP_PATH \
      --stop --quiet \
      --pidfile $PID_PATH || echo "$APP_NAME - Not running!"

  if [ -f $PID_PATH ]; then
    rm $PID_PATH
  fi
}

status() {
  echo -n "Checking status of $APP_NAME ... "
  pid=`cat $PID_PATH`
  status=`ps ax | grep $pid | grep -ve grep`
  if [ "$?" -eq 0 ]; then
    echo "running"
  else
    echo "NOT running"
  fi
}

case "$1" in
  status)
   status
    ;;
  start)
    start
    ;;
  stop)
    stop
    ;;
  restart)
    echo "Restarting $APP_NAME"
    ### stop ###
    stop
    wait
    ### start ###
    start
    ;;
  *)
    echo "Usage: $0 {start|stop|restart}"
    exit 1
esac