Caches é SQL optimisations

Scripts/small_pictures_gen.py

@@ -0,0 +1,25 @@
+"""A generator of small picture to test very larges galeries"""
+
+from PIL import Image
+from PIL import ImageDraw
+import argparse
+
+
+parser = argparse.ArgumentParser(
+    description="A generator of small picture to test very larges galeries"
+)
+
+parser.add_argument("count", help="Numbers of photo to generate", type=int)
+parser.add_argument(
+    "-outputfolder", help="The outputfolders by default : ./photos/", default="photos/"
+)
+
+args = parser.parse_args()
+
+for i in range(args.count):
+    if (100//5 * (i + 1)) % args.count == 0: # affichage tout les 5%
+        print(f"Image {i+1} : {(i+1)/args.count:.0%}")
+
+    img = Image.new(mode="RGB",size=(100,100),color=(0,0,0))
+    ImageDraw.Draw(img).text((0,0),str(i+1),(255,255,255))
+    img.save(args.outputfolder+f"img_{i+1}.jpg",)

photo21/settings.py

@@ -28,7 +28,7 @@ BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 SECRET_KEY = "CHANGE ME"
 
 # SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = False
+DEBUG = True
 
 ALLOWED_HOSTS = [
     "127.0.0.1",
@@ -37,6 +37,11 @@ ALLOWED_HOSTS = [
     "photos-dev.crans.org",
 ]
 
+INTERNAL_IPS = [
+    "127.0.0.1",
+    "localhost",
+]
+
 # Admins receive server errors, this is useful to be notified of potential bugs
 ADMINS = [
     ("admin", "photos-admin@lists.crans.org"),
@@ -68,9 +73,12 @@ INSTALLED_APPS = [
     "allauth_note_kfet",
     "crispy_forms",
     "photologue",
-    "photo21"
+    "photo21",
 ]
 
+if DEBUG:
+    INSTALLED_APPS += ["debug_toolbar",]  # For debug and optimisations
+
 MIDDLEWARE = [
     "django.middleware.security.SecurityMiddleware",
     "django.contrib.sessions.middleware.SessionMiddleware",
@@ -81,8 +89,10 @@ MIDDLEWARE = [
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
     "django.middleware.locale.LocaleMiddleware",
     "django.contrib.sites.middleware.CurrentSiteMiddleware",
-    "allauth.account.middleware.AccountMiddleware",
+    "allauth.account.middleware.AccountMiddleware",  # For the django =< 5.0
 ]
+if DEBUG :
+    MIDDLEWARE += ["debug_toolbar.middleware.DebugToolbarMiddleware",]
 
 ROOT_URLCONF = "photo21.urls"
 

photo21/urls.py

@@ -12,6 +12,7 @@ from django.conf import settings
 from django.conf.urls.static import static
 from django.contrib import admin
 from django.urls import include, path, re_path
+from debug_toolbar.toolbar import debug_toolbar_urls
 
 from .views import IndexView, MediaAccess
 
@@ -27,6 +28,7 @@ urlpatterns = [
 # In production media are served through NGINX with X-Accel-Redirect
 if settings.DEBUG:
     urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
+    urlpatterns += debug_toolbar_urls()
 else:
     urlpatterns.append(
         re_path("^media/(?P<path>.*)", MediaAccess.as_view(), name="media")

photologue/models.py

@@ -3,7 +3,6 @@
 
 import logging
 import os
-import random
 import unicodedata
 from datetime import datetime
 from functools import partial
@@ -16,6 +15,7 @@ from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.core.files.base import ContentFile
 from django.core.validators import RegexValidator
+from django.core.cache import caches
 from django.db import models
 from django.template.defaultfilters import slugify
 from django.urls import reverse
@@ -25,6 +25,8 @@ from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _
 from PIL import Image, ImageFile, ImageFilter
 
+
+
 logger = logging.getLogger("photologue.models")
 
 # Default limit for gallery.latest
@@ -184,13 +186,15 @@ class Gallery(models.Model):
     def sample(self, public=True):
         """Return a sample of photos, ordered at random."""
         count = 1
-        if count > self.photo_count():
+        nb = self.photo_count(public) #Optimisation don't do twice the SQL requests
-            count = self.photo_count()
+        if nb < count:
+            count = nb
+        
         if public:
             photo_set = self.photos.filter(is_public=True)
         else:
             photo_set = self.photos
-        return random.sample(list(photo_set), count)
+        return photo_set.order_by("?")[:count] # Use native SQL random
 
     def photo_count(self, public=True):
         """Return a count of all the photos in this gallery."""
@@ -721,10 +725,16 @@ class PhotoSizeCache:
 
     def __init__(self):
         self.__dict__ = self.__state
+
+        cached = caches.get("PhotoSizeCache",None)
+        if cached is None :
             if not len(self.sizes):
                 sizes = PhotoSize.objects.all()
                 for size in sizes:
                     self.sizes[size.name] = size
+            caches.set("PhotoSizeCache",self)
+        else :
+            self = cached
 
     def reset(self):
         global size_method_map

photologue/views.py

@@ -20,10 +20,16 @@ from django.views.generic.dates import ArchiveIndexView, YearArchiveView
 from django.views.generic.detail import DetailView
 from django.views.generic.edit import DeleteView, FormView
 from PIL import Image
+from django.contrib.auth import get_user_model
+
+
 
 from .forms import UploadForm
 from .models import Gallery, Photo, Tag
 
+# Cette ligne renvoie le modèle d'utilisateur actif (le natif ou le vôtre)
+User = get_user_model()
+
 
 class GalleryDateView(LoginRequiredMixin):
     model = Gallery
@@ -135,11 +141,11 @@ class GalleryDetailView(LoginRequiredMixin, DetailView):
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
 
-        # Non-staff members only see public photos
+        # Non-staff members only see public photos + prefetch all owners informations (Optimisation)
         if self.request.user.is_staff:
-            context["photos"] = self.object.photos.all()
+            context["photos"] = self.object.photos.all().select_related('owner')
         else:
-            context["photos"] = self.object.photos.filter(is_public=True)
+            context["photos"] = self.object.photos.filter(is_public=True).select_related('onwer')
 
         # List owners
         context["owners"] = []
@@ -147,6 +153,8 @@ class GalleryDetailView(LoginRequiredMixin, DetailView):
             if photo.owner not in context["owners"]:
                 context["owners"].append(photo.owner)
 
+
+
         # Filter on owner
         if "owner" in self.kwargs:
             context["photos"] = context["photos"].filter(owner__id=self.kwargs["owner"])