web: Unify entrypoint with others

Refs. sysadm-environment#5560

apps/swh-web/entrypoint.sh

@@ -3,7 +3,7 @@
 set -e
 
 case "$1" in
-    "shell")
+    'shell')
         shift
         if (( $# == 0)); then
             exec bash -i
@@ -11,19 +11,19 @@ case "$1" in
             "$@"
         fi
         ;;
-    "refresh")
-        echo "Start periodic save code now refresh statuses routine (in background)"
+    'refresh')
+        echo 'Start periodic save code now refresh statuses routine (in background)'
         exec sh -c 'date && django-admin refresh_savecodenow_statuses \
                       --settings=${DJANGO_SETTINGS_MODULE} 2>&1'
         ;;
-    "sync-mailmaps")
+    'sync-mailmaps')
         echo Deprecated use django-admin instead
         shift
-        echo "django-admin sync-mailmaps routine"
+        echo 'django-admin sync-mailmaps routine'
         date
         exec sh -c "django-admin sync_mailmaps --perform '$@'"
         ;;
-    "django-admin")
+    'django-admin')
         shift
         COMMAND=$1
         shift
@@ -33,23 +33,28 @@ case "$1" in
         exec sh -c "django-admin ${COMMAND} $*"
         ;;
     *)
-        EXTRA_CLI_FLAGS=""
-        if [ ! -z "${SWH_LOG_CONFIG_JSON}" ]; then
-            EXTRA_CLI_FLAGS+="--log-config-json ${SWH_LOG_CONFIG_JSON} "
+        # run gunicorn workers with production configuration
+        EXTRA_CLI_FLAGS=()
+        if [ -n "${SWH_LOG_CONFIG_JSON}" ]; then
+            EXTRA_CLI_FLAGS+=('--log-config-json' "${SWH_LOG_CONFIG_JSON}")
         fi
-        if [ ! -z "${SWH_DEV_MODE}" ]; then
-            EXTRA_CLI_FLAGS+="--reload "
+        if [ -n "${STATSD_HOST}" -a -n "${STATSD_PORT}" ]; then
+            EXTRA_CLI_FLAGS+=('--statsd-host' "${STATSD_HOST}:${STATSD_PORT}")
         fi
-        echo "Starting the swh-web server"
-        # run gunicorn workers as in production otherwise
-        exec gunicorn --bind 0.0.0.0:${PORT} \
-             --log-level ${SWH_LOG_LEVEL:-INFO} \
-             ${EXTRA_CLI_FLAGS} \
-             --threads ${THREADS} \
-             --workers ${WORKERS} \
-             --timeout ${TIMEOUT} \
-             --statsd-host=${STATSD_HOST}:${STATSD_PORT} \
-             --statsd-prefix=${STATSD_SERVICE_TYPE} \
+        if [ -n "${STATSD_SERVICE_TYPE}" ]; then
+            EXTRA_CLI_FLAGS+=('--statsd-prefix' "${STATSD_SERVICE_TYPE}")
+        fi
+        if [ -n "${SWH_DEV_MODE}" ]; then
+            EXTRA_CLI_FLAGS+=("--reload")
+        fi
+
+        echo 'Starting swh web server'
+        exec gunicorn --bind "0.0.0.0:${PORT}" \
+             --log-level "${SWH_LOG_LEVEL:-INFO}" \
+             "${EXTRA_CLI_FLAGS[@]}" \
+             --threads "${THREADS}" \
+             --workers "${WORKERS}" \
+             --timeout "${TIMEOUT}" \
              --access-logfile '-' \
              --env DJANGO_SETTINGS_MODULE=${DJANGO_SETTINGS_MODULE} \
              --config 'python:swh.web.gunicorn_config' \