Implemented vm_boot_order handler

cloudcontrol/node/config.py

@@ -119,6 +119,8 @@ class NodeConfigParser(object):
         self.attach_script = config.get('node', 'attach_script', default_attach_script)
         default_detach_script = 'hkvm-detach'
         self.detach_script = config.get('node', 'detach_script', default_detach_script)
+        default_boot_order_script = 'hkvm-boot-order'
+        self.boot_order_script = config.get('node', 'boot_order_script', default_boot_order_script)
 
         # RPC handler ACLs
         acl_section_name = 'node_handler'

cloudcontrol/node/hypervisor/__init__.py

@@ -304,6 +304,20 @@ class Handler(HostHandler):
             logger.error(msg)
             raise UndefinedDomain(msg)
 
+    @libvirt_handler
+    def vm_boot_order(self, name, order):
+        logger.debug('VM boot order %s -> %s', name, order)
+        if name in self.hypervisor.domains:
+            args_order = ['%s:%s' % tuple(x) for x in order]
+            rcode, output = execute(self.main, [self.main.config.boot_order_script,
+                                                name] + args_order)
+            if rcode != 0:
+                raise RuntimeError(output.strip().split('\n')[-1].strip())
+        else:
+            msg = 'Cannot change boot order of VM %s because it is not defined' % name
+            logger.error(msg)
+            raise UndefinedDomain(msg)
+
     @libvirt_handler
     def vm_stop(self, name):
         logger.debug('VM stop %s', name)