feat: 支持 virtual app (#12199)

* feat: 支持 virtual app

* perf: 增加 virtual host

* perf: 新增 virtual app 上传接口

* perf: 更名为 app provider

* perf: 优化代码

---------

Co-authored-by: Eric <xplzv@126.com>

apps/terminal/models/__init__.py

@@ -1,3 +1,4 @@
 from .session import *
 from .component import *
 from .applet import *
+from .virtualapp import *

apps/terminal/models/virtualapp/__init__.py

@@ -0,0 +1,2 @@
+from .provider import *
+from .virtualapp import *

apps/terminal/models/virtualapp/provider.py

@@ -0,0 +1,28 @@
+from django.db import models
+from django.utils.translation import gettext_lazy as _
+
+from common.db.models import JMSBaseModel
+
+__all__ = ['AppProvider', ]
+
+
+class AppProvider(JMSBaseModel):
+    name = models.CharField(max_length=128, verbose_name=_('Name'), unique=True)
+    hostname = models.CharField(max_length=128, verbose_name=_('Hostname'))
+    terminal = models.OneToOneField(
+        'terminal.Terminal', on_delete=models.CASCADE, null=True, blank=True,
+        related_name='app_provider', verbose_name=_('Terminal')
+    )
+    apps = models.ManyToManyField(
+        'VirtualApp', verbose_name=_('VirtualApp'),
+        through='VirtualAppPublication', through_fields=('provider', 'app'),
+    )
+
+    class Meta:
+        ordering = ('-date_created',)
+
+    @property
+    def load(self):
+        if not self.terminal:
+            return 'offline'
+        return self.terminal.load

apps/terminal/models/virtualapp/virtualapp.py

@@ -0,0 +1,103 @@
+import os
+import shutil
+
+from django.conf import settings
+from django.core.files.storage import default_storage
+from django.db import models
+from django.utils._os import safe_join
+from django.utils.translation import gettext_lazy as _
+from rest_framework.serializers import ValidationError
+
+from common.db.models import JMSBaseModel
+from common.utils import lazyproperty
+from common.utils.yml import yaml_load_with_i18n
+
+__all__ = ['VirtualApp', 'VirtualAppPublication']
+
+
+class VirtualApp(JMSBaseModel):
+    name = models.SlugField(max_length=128, verbose_name=_('Name'), unique=True)
+    display_name = models.CharField(max_length=128, verbose_name=_('Display name'))
+    version = models.CharField(max_length=16, verbose_name=_('Version'))
+    author = models.CharField(max_length=128, verbose_name=_('Author'))
+    is_active = models.BooleanField(default=True, verbose_name=_('Is active'))
+    protocols = models.JSONField(default=list, verbose_name=_('Protocol'))
+    image_name = models.CharField(max_length=128, verbose_name=_('Image name'))
+    image_protocol = models.CharField(max_length=16, default='vnc', verbose_name=_('Image protocol'))
+    image_port = models.IntegerField(default=5900, verbose_name=_('Image port'))
+    comment = models.TextField(default='', blank=True, verbose_name=_('Comment'))
+    tags = models.JSONField(default=list, verbose_name=_('Tags'))
+    providers = models.ManyToManyField(
+        through_fields=('app', 'provider',), through='VirtualAppPublication',
+        to='AppProvider', verbose_name=_('Providers')
+    )
+
+    class Meta:
+        verbose_name = _('Virtual app')
+
+    def __str__(self):
+        return self.name
+
+    @property
+    def path(self):
+        return default_storage.path('virtual_apps/{}'.format(self.name))
+
+    @lazyproperty
+    def readme(self):
+        readme_file = os.path.join(self.path, 'README.md')
+        if os.path.isfile(readme_file):
+            with open(readme_file, 'r') as f:
+                return f.read()
+        return ''
+
+    @property
+    def icon(self):
+        path = os.path.join(self.path, 'icon.png')
+        if not os.path.exists(path):
+            return None
+        return os.path.join(settings.MEDIA_URL, 'virtual_apps', self.name, 'icon.png')
+
+    @staticmethod
+    def validate_pkg(d):
+        files = ['manifest.yml', 'icon.png', ]
+        for name in files:
+            path = safe_join(d, name)
+            if not os.path.exists(path):
+                raise ValidationError({'error': _('Applet pkg not valid, Missing file {}').format(name)})
+
+        with open(safe_join(d, 'manifest.yml'), encoding='utf8') as f:
+            manifest = yaml_load_with_i18n(f)
+
+        if not manifest.get('name', ''):
+            raise ValidationError({'error': 'Missing name in manifest.yml'})
+        return manifest
+
+    @classmethod
+    def install_from_dir(cls, path):
+        from terminal.serializers import VirtualAppSerializer
+        manifest = cls.validate_pkg(path)
+        name = manifest['name']
+        instance = cls.objects.filter(name=name).first()
+        serializer = VirtualAppSerializer(instance=instance, data=manifest)
+        serializer.is_valid(raise_exception=True)
+        instance = serializer.save()
+
+        pkg_path = default_storage.path('virtual_apps/{}'.format(name))
+        if os.path.exists(pkg_path):
+            shutil.rmtree(pkg_path)
+        shutil.copytree(path, pkg_path)
+        return instance, serializer
+
+
+class VirtualAppPublication(JMSBaseModel):
+    provider = models.ForeignKey(
+        'AppProvider', on_delete=models.CASCADE, related_name='publications', verbose_name=_('App Provider')
+    )
+    app = models.ForeignKey(
+        'VirtualApp', on_delete=models.CASCADE, related_name='publications', verbose_name=_('Virtual App')
+    )
+    status = models.CharField(max_length=16, default='pending', verbose_name=_('Status'))
+
+    class Meta:
+        verbose_name = _('Virtual app publication')
+        unique_together = ('provider', 'app')