bitbake: toaster: make django temp directory configurable

Modify the django settings to make cache, logs and databases save
to a configurable directory with TOASTER_DJANGO_TMPDIR instead of
the machine root level /tmp directory.

In addition, add this variable to the passthroughs for tox.

This change is made to facilitate cleaning test files for runs on
the autobuilder and avoid errors involving the persisted database.

(Bitbake rev: 887aaa91fd54ef24fc3cce42d584b381e37d3343)

Signed-off-by: Alexander Lussier-Cullen <alexander.lussier-cullen@savoirfairelinux.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/toastermain/settings.py

@@ -148,6 +148,8 @@ STATICFILES_FINDERS = (
 # Make this unique, and don't share it with anybody.
 SECRET_KEY = 'NOT_SUITABLE_FOR_HOSTED_DEPLOYMENT'
 
+TMPDIR = os.environ.get('TOASTER_DJANGO_TMPDIR', '/tmp')
+
 class InvalidString(str):
     def __mod__(self, other):
         from django.template.base import TemplateSyntaxError
@@ -214,7 +216,7 @@ CACHES = {
     #        },
            'default': {
                'BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',
-               'LOCATION': '/tmp/toaster_cache_%d' % os.getuid(),
+               'LOCATION': '%s/toaster_cache_%d' % (TMPDIR, os.getuid()),
                'TIMEOUT': 1,
             }
           }
@@ -312,7 +314,7 @@ for t in os.walk(os.path.dirname(currentdir)):
 LOGGING = LOGGING_SETTINGS
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
-BUILDDIR = os.environ.get("BUILDDIR", "/tmp")
+BUILDDIR = os.environ.get("BUILDDIR", TMPDIR)
 
 # LOG VIEWER
 # https://pypi.org/project/django-log-viewer/
@@ -325,7 +327,6 @@ LOG_VIEWER_PATTERNS = ['INFO', 'DEBUG', 'WARNING', 'ERROR', 'CRITICAL']
 # Optionally you can set the next variables in order to customize the admin:
 LOG_VIEWER_FILE_LIST_TITLE = "Logs list"
 
-
 if DEBUG and SQL_DEBUG:
     LOGGING['loggers']['django.db.backends'] = {
             'level': 'DEBUG',

bitbake/lib/toaster/toastermain/settings_test.py

@@ -19,10 +19,10 @@ TEMPLATE_DEBUG = DEBUG
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': '/tmp/toaster-test-db.sqlite',
+        'NAME': '%s/toaster-test-db.sqlite' % TMPDIR,
         'TEST': {
             'ENGINE': 'django.db.backends.sqlite3',
-            'NAME': '/tmp/toaster-test-db.sqlite',
+            'NAME': '%s/toaster-test-db.sqlite' % TMPDIR,
         }
     }
 }

bitbake/lib/toaster/tox.ini

@@ -8,6 +8,7 @@ passenv = *
 passenv =
     SSTATE_DIR
     DL_DIR
+    TOASTER_DJANGO_TMPDIR
 setenv =
     DJANGO_SETTINGS_MODULE=toastermain.settings_test
     TOASTER_BUILDSERVER=1