Fix #3328 adiciona script supervisor/gunicorn (#3329)

* Fix #3328 adiciona script supervisor/gunicorn

* refatora codigo com mudanças sugeridas

* Update gunicorn_start.sh

Co-authored-by: Leandro Roberto Silva <leandroroberto.br@gmail.com>

scripts/gunicorn_start.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+
+# SCRIPT DE INICIALIZAÇÃO VIA SOKEFILE
+
+# As seen in http://tutos.readthedocs.org/en/latest/source/ndg.html
+
+
+SAPL_DIR="/var/interlegis/sapl"
+
+# Seta um novo diretório foi passado como raiz para o SAPL
+# caso esse tenha sido passado como parâmetro
+if [ "$1" ]
+then
+    SAPL_DIR="$1"
+fi
+
+NAME="SAPL"                                     # Name of the application (*)
+DJANGODIR=$SAPL_DIR/                            # Django project directory (*)
+SOCKFILE=$SAPL_DIR/run/gunicorn.sock            # we will communicate using this unix socket (*)
+USER=`whoami`                                   # the user to run as (*)
+GROUP=`whoami`                                  # the group to run as (*)
+NUM_WORKERS=3                                   # how many worker processes should Gunicorn spawn (*)
+                                                # NUM_WORKERS = 2 * CPUS + 1
+TIMEOUT=60
+MAX_REQUESTS=100                                # number of requests before restarting worker
+DJANGO_SETTINGS_MODULE=sapl.settings            # which settings file should Django use (*)
+DJANGO_WSGI_MODULE=sapl.wsgi                    # WSGI module name (*)
+
+echo "Starting $NAME as `whoami` on base dir $SAPL_DIR"
+
+# Ativa ambiente virtual
+cd $DJANGODIR
+source $SAPL_DIR/../.virtualenvs/sapl/bin/activate
+
+export DJANGO_SETTINGS_MODULE=$DJANGO_SETTINGS_MODULE
+export PYTHONPATH=$DJANGODIR:$PYTHONPATH
+
+# Create the run directory if it doesn't exist
+RUNDIR=$(dirname $SOCKFILE)
+test -d $RUNDIR || mkdir -p $RUNDIR
+
+# Start your Django Unicorn
+# Programs meant to be run under supervisor should not daemonize themselves (do not use --daemon)
+exec gunicorn ${DJANGO_WSGI_MODULE}:application \
+  --name $NAME \
+  --log-level debug \
+  --timeout $TIMEOUT \
+  --workers $NUM_WORKERS \
+  --max-requests $MAX_REQUESTS \
+  --user $USER \
+  --access-logfile /var/log/sapl/access.log \
+  --error-logfile /var/log/sapl/error.log \
+  --bind=unix:$SOCKFILE
+