Switch to using Azure blob storage for media uploads.

prs2/referral/models.py

@@ -1,11 +1,11 @@
+from azure.core.exceptions import ResourceNotFoundError
 from copy import copy
 from datetime import date
 from dateutil.parser import parse
 from django.conf import settings
 from django.contrib.auth.signals import user_logged_in
 from django.contrib.gis.db import models
 from django.contrib.gis.geos import GeometryCollection
-from django.core.exceptions import SuspiciousFileOperation
 from django.core.mail import EmailMultiAlternatives
 from django.core.validators import MaxLengthValidator
 from django.db.models import Q
@@ -1140,27 +1140,24 @@ def filename(self):
 
     @property
     def extension(self):
-        try:  # Account for SuspiciousFileOperation exceptions.
-            if self.uploaded_file and os.path.exists(self.uploaded_file.path):
-                ext = os.path.splitext(self.uploaded_file.name)[1]
-                return ext.replace(".", "").upper()
-            else:
-                return ""
-        except SuspiciousFileOperation:
+        if self.uploaded_file:
+            ext = os.path.splitext(self.uploaded_file.name)[1]
+            return ext.replace(".", "").upper()
+        else:
             return ""
 
     @property
     def filesize_str(self):
-        try:  # Account for SuspiciousFileOperation exceptions.
-            if self.uploaded_file and os.path.exists(self.uploaded_file.path):
+        try:
+            if self.uploaded_file:
                 num = self.uploaded_file.size
                 for x in ["b", "Kb", "Mb", "Gb"]:
                     if num < 1024.0:
                         return "{:3.1f}{}".format(num, x)
                     num /= 1024.0
             else:
                 return ""
-        except SuspiciousFileOperation:
+        except ResourceNotFoundError:
             return ""
 
     def as_row(self):

prs2/settings.py

@@ -28,17 +28,22 @@
 INTERNAL_IPS = ['127.0.0.1', '::1']
 ROOT_URLCONF = 'prs2.urls'
 WSGI_APPLICATION = 'prs2.wsgi.application'
-# Allow overriding the Django default for FILE_UPLOAD_PERMISSIONS (0o644).
-# Required for non-local Azure storage volumes in Kubernetes environment.
-FILE_UPLOAD_PERMISSIONS = env('FILE_UPLOAD_PERMISSIONS', None)
 
+# Use Azure blob storage for media uploads.
+DEFAULT_FILE_STORAGE = 'storages.backends.azure_storage.AzureStorage'
+AZURE_ACCOUNT_NAME = env('AZURE_ACCOUNT_NAME', 'name')
+AZURE_ACCOUNT_KEY = env('AZURE_ACCOUNT_KEY', 'key')
+AZURE_CONTAINER = env('AZURE_CONTAINER', 'container')
+
+# PRS may deploy its own instance of Geoserver.
 PRS_GEOSERVER_WMTS_URL = env('PRS_GEOSERVER_WMTS_URL', '')
 PRS_GEOSERVER_WFS_URL = env('PRS_GEOSERVER_WFS_URL', '')
 GEOSERVER_WMTS_URL = env('GEOSERVER_WMTS_URL', '')
 GEOSERVER_WFS_URL = env('GEOSERVER_WFS_URL', '')
 GEOSERVER_SSO_USER = env('GEOSERVER_SSO_USER', 'username')
 GEOSERVER_SSO_PASS = env('GEOSERVER_SSO_PASS', 'password')
 GEOCODER_URL = env('GEOCODER_URL', '')
+
 INSTALLED_APPS = (
     'whitenoise.runserver_nostatic',
     'django.contrib.admin',

pyproject.toml

@@ -37,6 +37,7 @@ django-celery-results = "2.4.0"
 pygeopkg = "0.1.3"
 whitenoise = {version = "6.5.0", extras = ["brotli"]}
 django-crum = "0.7.9"
+django-storages = {version = "1.13.2", extras = ["azure"]}
 
 [tool.poetry.group.dev.dependencies]
 ipython = "^8.10.0"