add deployment user to limit deployment

deployment/admin.py

@@ -1,6 +1,10 @@
 from django.contrib import admin
 
-from deployment.models import Deployment
+from deployment.models import Deployment, DeploymentUser
+
+
+class DeploymentUserAdmin(admin.ModelAdmin):
+    pass
 
 
 class DeploymentAdmin(admin.ModelAdmin):
@@ -8,3 +12,4 @@ class DeploymentAdmin(admin.ModelAdmin):
 
 
 admin.site.register(Deployment, DeploymentAdmin)
+admin.site.register(DeploymentUser, DeploymentUserAdmin)

deployment/channel.py

@@ -9,9 +9,9 @@ def parse_channel(channel: str) -> tuple[str] | None:
     parts = channel.lstrip("deployment_").split("_")
     if len_part := len(parts):
         if len_part == 1:
-            return (parts[0], "")
+            return (int(parts[0]), "")
         if len_part == 2:
-            return (parts[0], parts[1])
+            return (int(parts[0]), parts[1])
     return
 
 

deployment/migrations/0002_deploymentuser.py

@@ -0,0 +1,25 @@
+# Generated by Django 4.2.5 on 2023-09-23 14:21
+
+from django.conf import settings
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('deployment', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='DeploymentUser',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('credits', models.SmallIntegerField(default=1, help_text='number of deployment allowed (-1 infinite)', validators=[django.core.validators.MinValueValidator(-1, message='Value must be greater than or equal to -1')])),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

deployment/models.py

@@ -3,6 +3,7 @@ from typing import Any
 
 
 from django.contrib.auth.models import User
+from django.core.validators import MinValueValidator
 from django.db import models
 
 
@@ -28,6 +29,21 @@ class Status(Enum):
         return [(s.name, s.value) for s in cls]
 
 
+class DeploymentUser(models.Model):
+    user = models.OneToOneField(User, on_delete=models.CASCADE)
+    credits = models.SmallIntegerField(
+        null=False,
+        default=1,
+        help_text="number of deployment allowed (-1 infinite)",
+        validators=[
+            MinValueValidator(-1, message="Value must be greater than or equal to -1"),
+        ],
+    )
+
+    def __str__(self) -> str:
+        return f"{self.user.username} - {self.credits}"
+
+
 class Deployment(models.Model):
     id = models.UUIDField(primary_key=True)
     name = models.TextField(null=False, blank=False)

deployment/views.py

@@ -2,11 +2,14 @@ from uuid import uuid4
 
 from celery.result import AsyncResult
 from celery.contrib.abortable import AbortableAsyncResult
+from django.contrib.auth.models import User
+from django.core.exceptions import ObjectDoesNotExist
 from django.core.paginator import Paginator
 from django.http import (
     HttpResponseRedirect,
     HttpResponseServerError,
     HttpResponseBadRequest,
+    HttpResponseForbidden,
 )
 from django.shortcuts import render, get_object_or_404
 
@@ -16,6 +19,21 @@ from deployment.models import Deployment, Status
 from deployment.tasks import deploy as launch_deploy
 
 
+def check_user_credits(user: User) -> bool:
+    if not user.is_superuser:
+        try:
+            dep_user = user.deploymentuser
+        except (ObjectDoesNotExist, AttributeError):
+            return False
+        else:
+            if dep_user.credits < 0:
+                return True
+
+            deployments = Deployment.objects.filter(user=user)
+            return not len(deployments) >= dep_user.credits
+    return True
+
+
 def index(request):
     deployments = Deployment.objects.filter(user=request.user.id).order_by(
         "-created_at"
@@ -32,6 +50,7 @@ def index(request):
             "page_obj": page_obj,
             "range_pages": (i + 1 for i in range(page_obj.paginator.num_pages)),
             "url": f"events/{request.user.id}/",
+            "can_create": check_user_credits(request.user),
         },
     )
 
@@ -109,6 +128,11 @@ def details(request, deployment_id):
 
 def create(request):
     if request.method == "POST":
+        if not check_user_credits(request.user):
+            return HttpResponseForbidden(
+                "unable to launch deployment, contact administrator for support"
+            )
+
         form = DeploymentForm(request.POST)
         if form.is_valid():
             try:

pyproject.toml

@@ -8,7 +8,8 @@ exclude = [
     ".git",
     ".ruff_cache",
     "venv",
-    "settings.py"
+    "settings.py",
+    "deployment/migrations/*.py"
 ]
 
 line-length = 88

templates/deployment/board.html

@@ -58,9 +58,12 @@
                         {% endfor %}
                     </table>
                     {% include 'pagination.html' %}
-                    <button type="button" class="btn btn-success" data-bs-toggle="modal" data-bs-target="#create-deployment-modal">
+                    <button type="button" {% if can_create %} class="btn btn-success" data-bs-toggle="modal" data-bs-target="#create-deployment-modal" {% else %} class="btn btn-danger" disabled {% endif %}>
                         Create
-                    </button>                  
+                    </button>
+                    {% if not can_create %}
+                        <p style="font-style: italic;">You can't create new deployments, contact administrator for support.</p>
+                    {% endif %}
                 {% else %}
                     <h4 style="text-align: center;">Please log in !</h4>
                 {% endif %}
@@ -70,7 +73,9 @@
 {% endblock %}
 
 {% block modal %}
-    {% include 'deployment/create_modal.html' %}
+    {% if can_create %}
+        {% include 'deployment/create_modal.html' %}
+    {% endif %}
 {% endblock %}
 
 {% block script %}