Added fetchvmtemplates management command in datacenterlight

datacenterlight/management/commands/fetchvmtemplates.py

@@ -0,0 +1,29 @@
+from django.core.management.base import BaseCommand
+from opennebula_api.models import OpenNebulaManager
+from datacenterlight.models import VMTemplate
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class Command(BaseCommand):
+    help = 'Fetches the VM templates from OpenNebula and populates the dcl VMTemplate model'
+
+    def handle(self, *args, **options):
+        try:
+            manager = OpenNebulaManager()
+            templates = manager.get_templates()
+            dcl_vm_templates = []
+            for template in templates:
+                template_name = template.name.strip('public-')
+                template_id = template.id
+                dcl_vm_template = VMTemplate.create(template_name, template_id)
+                dcl_vm_templates.append(dcl_vm_template)
+
+            old_vm_templates = VMTemplate.objects.all()
+            old_vm_templates.delete()
+
+            for dcl_vm_template in dcl_vm_templates:
+                dcl_vm_template.save()
+        except Exception as e:
+            logger.error('Error connecting to OpenNebula. Error Details: {err}'.format(err=str(e)))