[Feature] 添加功能：数据库应用 (#3551)

* [Update] 添加数据库应用Model

* [Update] 添加数据库应用ViewSet

* [Update] 添加数据库应用HTML

* [Update] 更新数据库应用迁移文件

* [Update] 添加数据库应用授权Model

* [Update] 添加数据库应用授权ViewSet（待续）

* [Update] 添加数据库应用授权ViewSet（完结）

* [Update] 添加数据库应用授权View（待续）

* [Update] 添加数据库应用授权View（待续2）

* [Update] 修改远程应用授权View（小问题）

* [Update] 添加数据库应用授权View（待续3）

* [Update] 添加数据库应用授权View（完结）

* [Update] 添加数据库应用授权相关API

* [Update] 添加数据库应用View（用户页面）

* [Update] 修改数据库应用授权Model/View/API（系统用户）

* [Update] 修改系统用户Model/View（添加mysql协议）

* [Update] 修改用户页面（我的应用）

* [Update] 添加迁移文件

* [Update] 添加迁移文件2

* [Update] 续添加迁移文件2（Model更改）

* [Update] 修改系统用户序列类（mysql协议自动生成密码问题）

* [Update] 修改数据库应用/资产等授权序列类

* [Update] 修改命令列表/会话详情命令溢出

* [Update] 修改授权详情中添加系统用户的过滤

* [Update] 修改列表动作的宽度

apps/perms/views/database_app_permission.py

@@ -0,0 +1,152 @@
+# coding: utf-8
+#
+
+from django.utils.translation import ugettext as _
+
+from django.views.generic import (
+    TemplateView, CreateView, UpdateView, DetailView, ListView
+)
+from django.views.generic.edit import SingleObjectMixin
+from django.conf import settings
+
+from common.permissions import PermissionsMixin, IsOrgAdmin
+from users.models import UserGroup
+from applications.models import DatabaseApp
+from assets.models import SystemUser
+
+from .. import models, forms
+
+
+__all__ = [
+    'DatabaseAppPermissionListView', 'DatabaseAppPermissionCreateView',
+    'DatabaseAppPermissionUpdateView', 'DatabaseAppPermissionDetailView',
+    'DatabaseAppPermissionUserView', 'DatabaseAppPermissionDatabaseAppView',
+]
+
+
+class DatabaseAppPermissionListView(PermissionsMixin, TemplateView):
+    template_name = 'perms/database_app_permission_list.html'
+    permission_classes = [IsOrgAdmin]
+
+    def get_context_data(self, **kwargs):
+        context = {
+            'app': _('Perms'),
+            'action': _('DatabaseApp permission list')
+        }
+        kwargs.update(context)
+        return super().get_context_data(**kwargs)
+
+
+class DatabaseAppPermissionCreateView(PermissionsMixin, CreateView):
+    template_name = 'perms/database_app_permission_create_update.html'
+    model = models.DatabaseAppPermission
+    form_class = forms.DatabaseAppPermissionCreateUpdateForm
+    permission_classes = [IsOrgAdmin]
+
+    def get_context_data(self, **kwargs):
+        context = {
+            'app': _('Perms'),
+            'action': _('Create DatabaseApp permission'),
+            'api_action': 'create',
+        }
+        kwargs.update(context)
+        return super().get_context_data(**kwargs)
+
+
+class DatabaseAppPermissionUpdateView(PermissionsMixin, UpdateView):
+    template_name = 'perms/database_app_permission_create_update.html'
+    model = models.DatabaseAppPermission
+    form_class = forms.DatabaseAppPermissionCreateUpdateForm
+    permission_classes = [IsOrgAdmin]
+
+    def get_context_data(self, **kwargs):
+        context = {
+            'app': _('Perms'),
+            'action': _('Update DatabaseApp permission'),
+            'api_action': 'update'
+        }
+        kwargs.update(context)
+        return super().get_context_data(**kwargs)
+
+
+class DatabaseAppPermissionDetailView(PermissionsMixin, DetailView):
+    template_name = 'perms/database_app_permission_detail.html'
+    model = models.DatabaseAppPermission
+    permission_classes = [IsOrgAdmin]
+
+    def get_context_data(self, **kwargs):
+        context = {
+            'app': _('Perms'),
+            'action': _('DatabaseApp permission detail')
+        }
+        kwargs.update(context)
+        return super().get_context_data(**kwargs)
+
+
+class DatabaseAppPermissionUserView(PermissionsMixin,
+                                    SingleObjectMixin,
+                                    ListView):
+    template_name = 'perms/database_app_permission_user.html'
+    context_object_name = 'database_app_permission'
+    paginate_by = settings.DISPLAY_PER_PAGE
+    object = None
+    permission_classes = [IsOrgAdmin]
+
+    def get(self, request, *args, **kwargs):
+        self.object = self.get_object(queryset=models.DatabaseAppPermission.objects.all())
+        return super().get(request, *args, **kwargs)
+
+    def get_queryset(self):
+        queryset = list(self.object.get_all_users())
+        return queryset
+
+    def get_context_data(self, **kwargs):
+        users = [str(i) for i in self.object.users.all().values_list('id', flat=True)]
+        user_groups_remain = UserGroup.objects.exclude(
+            databaseapppermission=self.object)
+        context = {
+            'app': _('Perms'),
+            'action': _('DatabaseApp permission user list'),
+            'users': users,
+            'user_groups_remain': user_groups_remain,
+        }
+        kwargs.update(context)
+        return super().get_context_data(**kwargs)
+
+
+class DatabaseAppPermissionDatabaseAppView(PermissionsMixin,
+                                           SingleObjectMixin,
+                                           ListView):
+    template_name = 'perms/database_app_permission_database_app.html'
+    context_object_name = 'database_app_permission'
+    paginate_by = settings.DISPLAY_PER_PAGE
+    object = None
+    permission_classes = [IsOrgAdmin]
+
+    def get(self, request, *args, **kwargs):
+        self.object = self.get_object(
+            queryset=models.DatabaseAppPermission.objects.all()
+        )
+        return super().get(request, *args, **kwargs)
+
+    def get_queryset(self):
+        queryset = list(self.object.get_all_database_apps())
+        return queryset
+
+    def get_context_data(self, **kwargs):
+        database_apps = self.object.get_all_database_apps().values_list('id', flat=True)
+        database_apps = [str(i) for i in database_apps]
+        system_users_remain = SystemUser.objects\
+            .exclude(granted_by_database_app_permissions=self.object)\
+            .filter(protocol=SystemUser.PROTOCOL_MYSQL)
+        context = {
+            'app': _('Perms'),
+            'database_apps': database_apps,
+            'database_apps_remain': DatabaseApp.objects.exclude(
+                granted_by_permissions=self.object
+            ),
+            'system_users_remain': system_users_remain,
+            'action': _('DatabaseApp permission DatabaseApp list'),
+        }
+        kwargs.update(context)
+        return super().get_context_data(**kwargs)