Validate minimum RAM for snapshot source

On launch instance there was no check for
min RAM values when launching from snapshot.
Now when launching from snapshot it will check
the same requirements as the images.

Change-Id: I138476b839319f357022f9545c5104a17a382df3
Partial-Bug: #1401101
(cherry picked from commit ce8677e675)

horizon/static/horizon/js/horizon.instances.js

@@ -212,16 +212,18 @@ horizon.addInitFunction(horizon.instances.init = function () {
    Update the device size value to reflect minimum allowed
    for selected image and flavor
    */
-  function update_device_size() {
+  function update_device_size(source_type) {
     var volume_size = horizon.Quota.getSelectedFlavor().disk;
-    var image = horizon.Quota.getSelectedImage();
     var size_field = $("#id_volume_size");
 
-    if (image !== undefined && image.min_disk > volume_size) {
-      volume_size = image.min_disk;
-    }
-    if (image !== undefined && image.size > volume_size) {
-      volume_size = image.size;
+    if (source_type === 'image') {
+      var image = horizon.Quota.getSelectedImageOrSnapshot(source_type);
+      if (image !== undefined && image.min_disk > volume_size) {
+        volume_size = image.min_disk;
+      }
+      if (image !== undefined && image.size > volume_size) {
+        volume_size = image.size;
+      }
     }
 
     // If the user has manually changed the volume size, do not override
@@ -246,7 +248,7 @@ horizon.addInitFunction(horizon.instances.init = function () {
   });
 
   $document.on('change', '.workflow #id_image_id', function () {
-    update_device_size();
+    update_device_size('image');
   });
 
   $document.on('input', '.workflow #id_volume_size', function () {

horizon/static/horizon/js/horizon.quota.js

@@ -134,25 +134,25 @@ horizon.Quota = {
   },
 
   /*
-   Return an image Object based on which image ID is selected
+   Return an image/snapshot Object based on which image/snapshot ID is selected
    */
-  getSelectedImage: function() {
-    var selected = $('#id_image_id option:selected').val();
+  getSelectedImageOrSnapshot: function(source_type) {
+    var selected = $('#id_' + source_type + '_id option:selected').val();
     return horizon.Quota.findImageById(selected);
   },
 
   /*
-   Disable any flavors for a given image that do not meet
+   Disable any flavors for a given image/snapshot that do not meet
    its minimum RAM or disk requirements.
    */
-  disableFlavorsForImage: function(image) {
-    image = horizon.Quota.getSelectedImage();
+  disableFlavorsForImage: function(source_type) {
+    var source = horizon.Quota.getSelectedImageOrSnapshot(source_type);
     var to_disable = []; // an array of flavor names to disable
 
     horizon.Quota.resetFlavors(); // clear any previous messages
 
     $.each(horizon.Quota.flavors, function(i, flavor) {
-      if (!horizon.Quota.imageFitsFlavor(image, flavor)) {
+      if (!horizon.Quota.imageFitsFlavor(source, flavor)) {
         to_disable.push(flavor.name);
       }
     });
@@ -192,7 +192,7 @@ horizon.Quota = {
     this.disabledFlavorMessage = disabledMessage;
     this.allFlavorsDisabledMessage = allDisabledMessage;
     // Check if the image is pre-selected
-    horizon.Quota.disableFlavorsForImage();
+    horizon.Quota.disableFlavorsForImage('image');
   },
 
   /*
@@ -397,12 +397,17 @@ horizon.Quota = {
       };
 
       var imageChangeCallback = function() {
-        scope.disableFlavorsForImage();
+        scope.disableFlavorsForImage('image');
+      };
+
+      var snapshotChangeCallback = function() {
+        scope.disableFlavorsForImage('instance_snapshot');
       };
 
       $('#id_flavor').on('keyup change', eventCallback);
       $('#id_count').on('input', eventCallback);
       $('#id_image_id').on('change', imageChangeCallback);
+      $('#id_instance_snapshot_id').on('change', snapshotChangeCallback);
     }
 
     $(this.user_value_form_inputs).each(function(index, element) {

openstack_dashboard/dashboards/project/instances/templates/instances/_flavors_and_quotas.html

@@ -75,8 +75,8 @@
 
 
 <script type="text/javascript" charset="utf-8">
-  some_disabled_msg = '{{_("Some flavors not meeting minimum image requirements have been disabled.")|escapejs }}';
-  all_disabled_msg = '{{_("No flavors meet minimum criteria for selected image.")|escapejs }}';
+  some_disabled_msg = '{{_("Some flavors not meeting minimum boot source requirements have been disabled.")|escapejs }}';
+  all_disabled_msg = '{{_("No flavors meet minimum criteria for selected boot source.")|escapejs }}';
 
   if(typeof horizon.Quota !== 'undefined') {
     horizon.Quota.initWithFlavors({{ flavors|safe|default:"{}" }});