Merge pull request #418 from pcoder/task/3615/decouple_landing_page_from_opennebula

Task/3615/decouple landing page from opennebula

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)))

datacenterlight/models.py

@@ -15,6 +15,7 @@ class BetaAccessVMType(models.Model):
 class BetaAccess(models.Model):
     email = models.CharField(max_length=250)
     name = models.CharField(max_length=250)
+
     # vm = models.ForeignKey(BetaAccessVM)
 
     def __str__(self):
@@ -48,3 +49,13 @@ class BetaAccessVM(models.Model):
                                                   amount=vm[VM_AMOUNT], type=vm_type))
 
         return created_vms
+
+
+class VMTemplate(models.Model):
+    name = models.CharField(max_length=50)
+    opennebula_vm_template_id = models.IntegerField()
+
+    @classmethod
+    def create(cls, name, opennebula_vm_template_id):
+        vm_template = cls(name=name, opennebula_vm_template_id=opennebula_vm_template_id)
+        return vm_template

datacenterlight/templates/datacenterlight/calculator_form.html

@@ -18,7 +18,8 @@
         <div class="form-group">
             <div class="description input">
                 <i class="fa fa-minus-circle left" data-minus="cpu" aria-hidden="true"></i>
-            <input class="input-price select-number" type="number"  min="1" max="48" id="coreValue" name="cpu" data-error="{% trans 'Please enter a value in range 1 - 48.' %}" required>
+                <input class="input-price select-number" type="number" min="1" max="48" id="coreValue" name="cpu"
+                       data-error="{% trans 'Please enter a value in range 1 - 48.' %}" required>
                 <span> Core</span>
                 <i class="fa fa-plus-circle right" data-plus="cpu" aria-hidden="true"></i>
             </div>
@@ -35,7 +36,8 @@
         <div class="form-group">
             <div class="description input">
                 <i class="fa fa-minus-circle left" data-minus="ram" aria-hidden="true"></i>
-            <input id="ramValue" class="input-price select-number" type="number"  min="2" max="200"  name="ram" data-error="{% trans 'Please enter a value in range 2 - 200.' %}" required>
+                <input id="ramValue" class="input-price select-number" type="number" min="2" max="200" name="ram"
+                       data-error="{% trans 'Please enter a value in range 2 - 200.' %}" required>
                 <span> GB RAM</span>
                 <i class="fa fa-plus-circle right" data-plus="ram" aria-hidden="true"></i>
             </div>
@@ -52,7 +54,8 @@
         <div class="form-group">
             <div class="description input">
                 <i class="fa fa-minus-circle left" data-minus="storage" aria-hidden="true"></i>
-            <input id="storageValue" class="input-price select-number" type="number"  min="10" max="2000" step="10" name="storage" data-error="{% trans 'Please enter a value in range 10 - 2000.' %}" required>
+                <input id="storageValue" class="input-price select-number" type="number" min="10" max="2000" step="10"
+                       name="storage" data-error="{% trans 'Please enter a value in range 10 - 2000.' %}" required>
                 <span>{% trans "GB Storage (SSD)" %}</span>
                 <i class="fa fa-plus-circle right" data-plus="storage" aria-hidden="true"></i>
             </div>
@@ -70,7 +73,7 @@
             <label for="config">OS</label>
             <select name="config" id="">
                 {% for template in templates %}
-                    <option value="{{template.id}}">{{template.name}} </option>
+                <option value="{{template.opennebula_vm_template_id}}">{{template.name}}</option>
                 {% endfor %}
             </select>
         </div>
@@ -81,14 +84,17 @@
         <div class="form-group">
             <div class="description input justify-center">
                 <label for="name" class="control-label">{% trans "Name"%}</label>
-            <input type="text" name="name" class="form-control" placeholder="{% trans 'Your Name'%}" data-minlength="3" data-error="{% trans 'Please enter your name.' %}" required>
+                <input type="text" name="name" class="form-control" placeholder="{% trans 'Your Name'%}"
+                       data-minlength="3" data-error="{% trans 'Please enter your name.' %}" required>
             </div>
             <div class="help-block with-errors">
                 {% for message in messages %}
                 {% if 'name' in message.tags %}
-                    <ul class="list-unstyled"><li>
+                <ul class="list-unstyled">
+                    <li>
                         {{ message|safe }}
-                    </li></ul>
+                    </li>
+                </ul>
                 {% endif %}
                 {% endfor %}
             </div>
@@ -96,14 +102,18 @@
         <div class="form-group">
             <div class="description input justify-center">
                 <label for="email" class="control-label">{% trans "Email"%}</label>
-            <input name="email" type="email" pattern="^[^@\s]+@([^@\s]+\.)+[^@\s]+$" class="form-control" placeholder="{% trans 'Your Email' %}" data-error="{% trans 'Please enter a valid email address.' %}" required>
+                <input name="email" type="email" pattern="^[^@\s]+@([^@\s]+\.)+[^@\s]+$" class="form-control"
+                       placeholder="{% trans 'Your Email' %}"
+                       data-error="{% trans 'Please enter a valid email address.' %}" required>
             </div>
             <div class="help-block with-errors">
                 {% for message in messages %}
                 {% if 'email' in message.tags %}
-                     <ul class="list-unstyled"><li>
+                <ul class="list-unstyled">
+                    <li>
                         {{ message|safe }}
-                    </li></ul>
+                    </li>
+                </ul>
                 {% endif %}
                 {% endfor %}
             </div>

datacenterlight/views.py

@@ -1,7 +1,7 @@
 from django.views.generic import FormView, CreateView, TemplateView, DetailView
 from django.http import HttpResponseRedirect
 from .forms import BetaAccessForm
-from .models import BetaAccess, BetaAccessVMType, BetaAccessVM
+from .models import BetaAccess, BetaAccessVMType, BetaAccessVM, VMTemplate
 from django.contrib import messages
 from django.core.urlresolvers import reverse
 from django.core.mail import EmailMessage
@@ -21,7 +21,7 @@ from datetime import datetime
 from membership.models import CustomUser, StripeCustomer
 
 from opennebula_api.models import OpenNebulaManager
-from opennebula_api.serializers import VirtualMachineTemplateSerializer, VirtualMachineSerializer
+from opennebula_api.serializers import VirtualMachineTemplateSerializer, VirtualMachineSerializer, VMTemplateSerializer
 
 
 class LandingProgramView(TemplateView):
@@ -211,19 +211,10 @@ class IndexView(CreateView):
         for session_var in ['specs', 'user', 'billing_address_data']:
             if session_var in request.session:
                 del request.session[session_var]
-        try:
-            manager = OpenNebulaManager()
-            templates = manager.get_templates()
+
+        vm_templates = VMTemplate.objects.all()
         context = {
-                'templates': VirtualMachineTemplateSerializer(templates, many=True).data
-            }
-        except:
-            messages.error(request,
-                           'We have a temporary problem to connect to our backend. \
-                           Please try again in a few minutes'
-                           )
-            context = {
-                'error': 'connection'
+            'templates': vm_templates
         }
         return render(request, self.template_name, context)
 
@@ -236,9 +227,8 @@ class IndexView(CreateView):
         storage_field = forms.IntegerField(validators=[self.validate_storage])
         price = request.POST.get('total')
         template_id = int(request.POST.get('config'))
-        manager = OpenNebulaManager()
-        template = manager.get_template(template_id)
-        template_data = VirtualMachineTemplateSerializer(template).data
+        template = VMTemplate.objects.filter(opennebula_vm_template_id=template_id).first()
+        template_data = VMTemplateSerializer(template).data
 
         name = request.POST.get('name')
         email = request.POST.get('email')
@@ -350,25 +340,6 @@ class WhyDataCenterLightView(IndexView):
     template_name = "datacenterlight/whydatacenterlight.html"
     model = BetaAccess
 
-    @cache_control(no_cache=True, must_revalidate=True, no_store=True)
-    def get(self, request, *args, **kwargs):
-        try:
-            manager = OpenNebulaManager()
-            templates = manager.get_templates()
-            context = {
-                'templates': VirtualMachineTemplateSerializer(templates, many=True).data,
-            }
-        except:
-            messages.error(
-                request,
-                'We have a temporary problem to connect to our backend. \
-                Please try again in a few minutes'
-            )
-            context = {
-                'error': 'connection'
-                    }
-        return render(request, self.template_name, context)
-
 
 class PaymentOrderView(FormView):
     template_name = 'hosting/payment.html'

opennebula_api/models.py

@@ -325,7 +325,7 @@ class OpenNebulaManager():
             public_templates = [
                 template
                 for template in self._get_template_pool()
-                if 'public-' in template.name
+                if template.name.startswith('public-')
             ]
             return public_templates
         except ConnectionRefusedError:

opennebula_api/serializers.py

@@ -129,6 +129,12 @@ class VirtualMachineSerializer(serializers.Serializer):
         return obj.name.strip('public-')
 
 
+class VMTemplateSerializer(serializers.Serializer):
+    """Serializer to map the VMTemplate instance into JSON format."""
+    id = serializers.IntegerField(read_only=True, source='opennebula_vm_template_id')
+    name = serializers.CharField(read_only=True)
+
+
 def hexstr2int(string):
     return int(string.replace(':', ''), 16)