Separate geting flavors and filtering into separe tasks

Also minimalize numbers of calls to nova API

Signed-off-by: Dawid Deja <dawid.deja@intel.com>

host-evacuate.yaml

@@ -2,27 +2,33 @@
 version: '2.0'
 
 host-evacuate:
-    description: Evacuate VMs from given host
-    type: direct
+  description: Evacuate VMs from given host
+  type: direct
+  input:
+    - search_opts
+    - on_shared_storage
+    - flavor_extra_specs
 
-    input:
-        - search_opts
-        - on_shared_storage
+  tasks:
+    list_vms:
+      action: nova.servers_list search_opts=<% $.search_opts %>
+      publish:
+        vms: <% $.list_vms %>
+      on-success: filter_vms
 
-    tasks:
-        list_vms:
-            action: nova.servers_list search_opts=<% $.search_opts %>
-            publish:
-                vms: <% $.list_vms %>
-            on-success: filter_vms
+    list_flavors:
+      action: custom.find_flavors extra_specs=<% $.flavor_extra_specs %>
+      publish:
+        flavors: <% $.list_flavors %>
+      on-success: filter_vms
 
-        filter_vms:
-            with-items: vm in <% $.vms %>
-            action: custom.filter flavor=<% $.vm.flavor.id %> metadata=<% $.vm.metadata %> uuid=<% $.vm.id %>
-            publish:
-                filtered_vms: <% $.filter_vms %>
-            on-success: evacuate_vms
+    filter_vms:
+      join: all
+      action: custom.filter flavors=<% $.flavors %> vms=<% $.vms %>
+      publish:
+        filtered_vms: <% $.filter_vms %>
+      on-success: evacuate_vms
 
-        evacuate_vms:
-            with-items: vm in <% $.filtered_vms %>
-            action: custom.evacuate uuid=<% $.vm.uuid %> evacuate=<% $.vm.evacuate %> on_shared_storage=<% $.on_shared_storage %>
+    evacuate_vms:
+      with-items: vm in <% $.filtered_vms %>
+      action: nova.servers_evacuate server=<% $.vm %> on_shared_storage=<% $.on_shared_storage %>