X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Fpython%2FQemuUtils.py;h=d105dae89a756e34db7fdf722c7ed9071f4914a6;hp=7f741061773d5d27126aa2d82d8a7e5c5dcd2dda;hb=76798663ee3e71defd75bdf0d1e32d8242e38e33;hpb=43277be7e77afe0363f62c97c687bcfa506ee4b8

diff --git a/resources/libraries/python/QemuUtils.py b/resources/libraries/python/QemuUtils.py
index 7f74106177..d105dae89a 100644
--- a/resources/libraries/python/QemuUtils.py
+++ b/resources/libraries/python/QemuUtils.py
@@ -13,10 +13,12 @@
 
 """QEMU utilities library."""
 
+from time import time, sleep
 import json
 import re
-from time import time, sleep
+
 from robot.api import logger
+
 from resources.libraries.python.ssh import SSH
 from resources.libraries.python.constants import Constants
 from resources.libraries.python.topology import NodeType
@@ -122,7 +124,7 @@ class QemuUtils(object):
         """Set node to run QEMU on.
 
         :param node: Node to run QEMU on.
-        :param node: dict
+        :type node: dict
         """
         self._node = node
         self._ssh = SSH()
@@ -194,6 +196,21 @@ class QemuUtils(object):
                 self._node['host']))
         return json.loads(out_list[2])
 
+    def _qemu_qga_flush(self):
+        """Flush the QGA parser state
+        """
+        qga_cmd = 'printf "\xFF" | sudo -S nc ' \
+            '-q 1 -U ' + self.__QGA_SOCK
+        (ret_code, stdout, stderr) = self._ssh.exec_command(qga_cmd)
+        if 0 != int(ret_code):
+            logger.debug('QGA execute failed {0}'.format(stderr))
+            raise RuntimeError('QGA execute "{0}" failed on {1}'.format(cmd,
+                self._node['host']))
+        logger.trace(stdout)
+        if not stdout:
+            return {}
+        return json.loads(stdout.split('\n', 1)[0])
+
     def _qemu_qga_exec(self, cmd):
         """Execute QGA command.
 
@@ -212,7 +229,7 @@ class QemuUtils(object):
         logger.trace(stdout)
         if not stdout:
             return {}
-        return json.loads(stdout)
+        return json.loads(stdout.split('\n', 1)[0])
 
     def _wait_until_vm_boot(self, timeout=300):
         """Wait until QEMU VM is booted.
@@ -227,6 +244,7 @@ class QemuUtils(object):
             if time() - start > timeout:
                 raise RuntimeError('timeout, VM {0} not booted on {1}'.format(
                     self._qemu_opt['disk_image'], self._node['host']))
+            self._qemu_qga_flush()
             out = self._qemu_qga_exec('guest-ping')
             # Empty output - VM not booted yet
             if not out:
@@ -234,6 +252,9 @@ class QemuUtils(object):
             # Non-error return - VM booted
             elif out.get('return') is not None:
                 break
+            # Skip error and wait
+            elif out.get('error') is not None:
+                sleep(5)
             else:
                 raise RuntimeError('QGA guest-ping unexpected output {}'.format(
                     out))
@@ -303,7 +324,7 @@ class QemuUtils(object):
     def qemu_start(self):
         """Start QEMU and wait until VM boot.
 
-        :return: VM node info
+        :return: VM node info.
         :rtype: dict
         .. note:: First set at least node to run QEMU on.
         .. warning:: Starts only one VM on the node.