added admin and api views for listing all plugins, and refactored urls import

netbox/extras/plugins/views.py

@@ -0,0 +1,95 @@
+from collections import OrderedDict
+
+from django.apps import apps
+from django.conf import settings
+from django.contrib import admin
+from django.contrib.admin.views.decorators import staff_member_required
+from django.urls.exceptions import NoReverseMatch
+from django.utils.module_loading import import_string
+from django.shortcuts import render
+from django.views.generic import View
+from rest_framework import authentication, permissions, routers
+from rest_framework.response import Response
+from rest_framework.reverse import reverse
+from rest_framework.views import APIView
+
+
+@staff_member_required
+def installed_plugins_admin_view(request):
+    """
+    Admin view for listing all installed plugins
+    """
+    context_data = {
+        'plugins': [apps.get_app_config(plugin) for plugin in settings.PLUGINS]
+    }
+    return render(request, 'extras/admin/plugins_list.html', context_data)
+
+
+class InstalledPluginsAPIView(APIView):
+    """
+    API view for listing all installed plugins
+    """
+    permission_classes = [permissions.IsAdminUser]
+    _ignore_model_permissions = True
+    exclude_from_schema = True
+    swagger_schema = None
+
+    def get_view_name(self):
+        return "Installed Plugins"
+
+    @staticmethod
+    def _get_plugin_data(plugin_app_config):
+        return {
+            'name': plugin_app_config.verbose_name,
+            'package': plugin_app_config.name,
+            'author': plugin_app_config.author,
+            'author_email': plugin_app_config.author_email,
+            'description': plugin_app_config.description,
+            'verison': plugin_app_config.version
+        }
+
+    def get(self, request, format=None):
+        return Response([self._get_plugin_data(apps.get_app_config(plugin)) for plugin in settings.PLUGINS])
+
+
+class PluginsAPIRootView(APIView):
+    _ignore_model_permissions = True
+    exclude_from_schema = True
+    swagger_schema = None
+
+    def get_view_name(self):
+        return "Plugins"
+
+    @staticmethod
+    def _get_plugin_entry(plugin, app_config, request, format):
+        try:
+            api_app_name = import_string(f"{plugin}.api.urls.app_name")
+        except (ImportError, ModuleNotFoundError):
+            # Plugin does not expose an API
+            return None
+
+        try:
+            entry = (getattr(app_config, 'url_slug', app_config.label), reverse(
+                f"plugins-api:{api_app_name}:api-root",
+                request=request,
+                format=format
+            ))
+        except NoReverseMatch:
+            # The plugin does not include an api-root
+            entry = None
+
+        return entry
+
+    def get(self, request, format=None):
+
+        entries = []
+        for plugin in settings.PLUGINS:
+            app_config = apps.get_app_config(plugin)
+            entry = self._get_plugin_entry(plugin, app_config, request, format)
+            if entry is not None:
+                entries.append(entry)
+
+        return Response(OrderedDict((
+            ('installed-plugins', reverse('plugins-api:plugins-list', request=request, format=format)),
+            *entries
+        )))