better printing of DOMAIN var

when in settings, any command prints again DOMAIN which is boring and
inefficient

.env.example

@@ -1,5 +1,6 @@
 DOMAIN=localhost
-# note that DEBUG=true make snapshot parsing more verbose
+# note that with DEBUG=true, logs are more verbose (include tracebacks)
+DEBUG=true
 DEMO=true
 
 STATIC_ROOT=/tmp/static/

dhub/settings.py

@@ -34,8 +34,6 @@ DEBUG = config('DEBUG', default=False, cast=bool)
 
 DOMAIN = config("DOMAIN")
 assert DOMAIN not in [None, ''], "DOMAIN var is MANDATORY"
-# this var is very important, we print it
-print("DOMAIN: " + DOMAIN)
 
 ALLOWED_HOSTS = config('ALLOWED_HOSTS', default=DOMAIN, cast=Csv())
 assert DOMAIN in ALLOWED_HOSTS, f"DOMAIN {DOMAIN} is not in ALLOWED_HOSTS {ALLOWED_HOSTS}"

docker/devicehub-django.entrypoint.sh

@@ -18,6 +18,8 @@ deploy() {
 
         if [ "${DEBUG:-}" = 'true' ]; then
                 ./manage.py print_settings
+        else
+                echo "DOMAIN: ${DOMAIN}"
         fi
 
         # detect if existing deployment (TODO only works with sqlite)

evidence/management/commands/up_snapshots.py

@@ -58,8 +58,6 @@ class Command(BaseCommand):
                 self.devices.append(Build(s, self.user))
                 move_json(p, self.user.institution.name)
             except Exception as err:
-                if settings.DEBUG:
-                    logger.exception("%s", err)
                 snapshot_id = s.get("uuid", "")
-                txt = "It is not possible to parse snapshot: %s"
+                txt = "Could not parse snapshot: %s"
                 logger.error(txt, snapshot_id)

utils/logger.py

@@ -1,4 +1,5 @@
 import logging
+from django.conf import settings
 
 # Colors
 RED = "\033[91m"
@@ -24,6 +25,11 @@ class CustomFormatter(logging.Formatter):
             record.msg = self.highlight_args(record.msg, record.args, color)
             record.args = ()
             
+        # provide trace when DEBUG config
+        if settings.DEBUG:
+            import traceback
+            print(traceback.format_exc())
+
         return super().format(record)
 
     def highlight_args(self, message, args, color):