added the new algorithm to SCHEDULER_METHODs

circle/circle/settings/base.py

@@ -574,6 +574,9 @@ SESSION_COOKIE_NAME = "csessid%x" % (((getnode() // 139) ^
                                       (getnode() % 983)) & 0xffff)
 
 MAX_NODE_RAM = get_env_variable("MAX_NODE_RAM", 1024)
+MAX_NODE_CPU_CORE = get_env_variable("MAX_NODE_CPU_CORE", 10)
+
+SCHEDULER_METHOD = get_env_variable("SCHEDULER_METHOD", 'random')
 
 # Url to download the client: (e.g. http://circlecloud.org/client/download/)
 CLIENT_DOWNLOAD_URL = get_env_variable('CLIENT_DOWNLOAD_URL', 'http://circlecloud.org/client/download/')

circle/dashboard/forms.py

@@ -59,7 +59,7 @@ from storage.models import DataStore, Disk
 from django.contrib.admin.widgets import FilteredSelectMultiple
 from django.contrib.auth.models import Permission
 from .models import Profile, GroupProfile, Message
-from circle.settings.base import LANGUAGES, MAX_NODE_RAM
+from circle.settings.base import LANGUAGES, MAX_NODE_RAM, MAX_NODE_CPU_CORE
 from django.utils.translation import string_concat
 
 from .validators import domain_validator
@@ -118,10 +118,10 @@ class VmCustomizeForm(forms.Form):
     cpu_count = forms.IntegerField(widget=forms.NumberInput(attrs={
         'class': "form-control input-tags cpu-count-input",
         'min': 1,
-        'max': 10,
+        'max': MAX_NODE_CPU_CORE,
         'required': "",
     }),
-        min_value=1, max_value=10,
+        min_value=1, max_value=MAX_NODE_CPU_CORE,
     )
 
     ram_size = forms.IntegerField(widget=forms.TextInput(attrs={
@@ -466,10 +466,10 @@ class TemplateForm(forms.ModelForm):
     num_cores = forms.IntegerField(widget=forms.NumberInput(attrs={
         'class': "form-control input-tags cpu-count-input",
         'min': 1,
-        'max': 10,
+        'max': MAX_NODE_CPU_CORE,
         'required': "",
     }),
-        min_value=1, max_value=10,
+        min_value=1, max_value=MAX_NODE_CPU_CORE,
     )
 
     ram_size = forms.IntegerField(widget=forms.NumberInput(attrs={
@@ -1508,10 +1508,10 @@ class VmResourcesForm(forms.ModelForm):
     num_cores = forms.IntegerField(widget=forms.NumberInput(attrs={
         'class': "form-control input-tags cpu-count-input",
         'min': 1,
-        'max': 10,
+        'max': MAX_NODE_CPU_CORE,
         'required': "",
     }),
-        min_value=1, max_value=10,
+        min_value=1, max_value=MAX_NODE_CPU_CORE,
     )
 
     ram_size = forms.IntegerField(widget=forms.NumberInput(attrs={

circle/dashboard/templates/dashboard/_resources-sliders.html

@@ -46,7 +46,7 @@
     <i class="fa fa-ticket"></i> {% trans "RAM amount" %}
   </div>
   <div class="col-sm-6">
-    <input type="text" class="vm-slider ram-slider" 
+    <input type="text" class="vm-slider ram-slider"
      disabled placeholder="{% trans "Enable JS for fancy sliders" %}"
      data-slider="true" data-slider-highlight="true" data-slider-range="0, 8192"
      data-slider-step="128" data-slider-snap="true"/>

circle/dashboard/templates/dashboard/vm-detail/network.html

@@ -73,7 +73,9 @@
                   {% if l.ipv4 %}
                     <tr>
                       <td>
-                        {% display_portforward4 l %}
+                        {% autoescape off %}
+                          {% display_portforward4 l %}
+                        {% endautoescape %}
                       </td>
                       <td><i class="fa fa-long-arrow-right"></i></td>
                       <td>

circle/manager/scheduler.py

@@ -23,6 +23,10 @@ from django.conf import settings
 
 from common.models import HumanReadableException
 
+from circle.settings.base import SCHEDULER_METHOD
+
+import random
+
 logger = getLogger(__name__)
 
 
@@ -52,9 +56,7 @@ class TraitsUnsatisfiableException(SchedulerError):
         "new virtual machine currently.")
 
 
-def select_node(instance, nodes):
-    ''' Select a node for hosting an instance based on its requirements.
-    '''
+def common_select(instance, nodes):
     # check required traits
     nodes = [n for n in nodes
              if n.schedule_enabled and n.online and
@@ -71,9 +73,40 @@ def select_node(instance, nodes):
 
     # sort nodes first by sorting_key, then priority
     nodes.sort(key=lambda n: n.priority, reverse=True)
+    return nodes
+
+
+def common_evenly(instance, nodes):
+    nodes = common_select(instance, nodes)
+    nodes.sort(key=free_cpu_time, reverse=True)
+    result = nodes[0]
+    return result
+
+
+def common_random(instance, nodes):
+    nodes = common_select(instance, nodes)
+    result = random.choice(nodes)
+    return result
+
+def advanced_with_time_stamp(instance, nodes):
+    nodes = common_select(instance, nodes)
     nodes.sort(key=sorting_key, reverse=True)
     result = nodes[0]
+    return result
 
+def select_node(instance, nodes):
+    ''' Select a node for hosting an instance based on its requirements.
+    '''
+    if SCHEDULER_METHOD == 'evenly':
+        result = common_evenly(instance, nodes)
+    elif SCHEDULER_METHOD == 'random':
+        result = common_random(instance, nodes)
+    elif SCHEDULER_METHOD == 'advanced':
+        result = advanced_with_time_stamp(instance, nodes)
+    else:  # Default method is the random
+        result = common_random(instance, nodes)
+
+    logger.info('Scheduler method: %s selected', unicode(SCHEDULER_METHOD))
     logger.info('select_node: %s for %s', unicode(result), unicode(instance))
 
     result.time_stamp = timezone.now()