refactor failure inject

JIRA: DOCTOR-116

Change-Id: I14deda4ccb47414cff139a522a9196b68e92500e
Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

1 files changed, 71 insertions, 0 deletions

diff --git a/tests/scenario/network_failure.py b/tests/scenario/network_failure.py
new file mode 100644
index 00000000..1d9027a2
--- /dev/null
+++ b/tests/scenario/network_failure.py
@@ -0,0 +1,71 @@
+##############################################################################
+# Copyright (c) 2017 ZTE Corporation and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+from identity_auth import get_session
+from os_clients import nova_client
+from common.utils import SSHClient
+
+LINK_DOWN_SCRIPT = """
+#!/bin/bash -x
+dev=$(sudo ip a | awk '/ {compute_ip}\//{{print $NF}}')
+sleep 1
+sudo ip link set $dev down
+echo "doctor set link down at" $(date "+%s.%N")
+sleep 10
+sudo ip link set $dev up
+sleep 1
+"""
+
+
+class NetworkFault(object):
+
+    def __init__(self, conf, installer, log):
+        self.conf = conf
+        self.log = log
+        self.installer = installer
+        self.nova = nova_client(self.conf.nova_version, get_session())
+        self.host = None
+        self.GetLog = False
+
+    def start(self, host):
+        self.log.info('fault inject start......')
+        self._set_link_down(host.ip)
+        self.host = host
+        self.log.info('fault inject end......')
+
+    def cleanup(self):
+        self.log.info('fault inject cleanup......')
+        self.get_diable_network_log()
+
+    def get_diable_network_log(self):
+        if not self.GetLog:
+            self.log.info('Already get the disable_netork.log from down_host......')
+            return
+        if self.host is not None:
+            client = SSHClient(self.host.ip,
+                               self.installer.node_user_name,
+                               key_filename=self.installer.get_ssh_key_from_installer(),
+                               look_for_keys=True,
+                               log=self.log)
+            client.scp('disable_network.log', './disable_network.log', method='get')
+            self.log.info('Get the disable_netork.log from down_host(host_name:%s, host_ip:%s)'
+                          % (self.host.name, self.host.ip))
+        self.GetLog = True
+
+    def _set_link_down(self, compute_ip):
+        file_name = './disable_network.sh'
+        with open(file_name, 'w') as file:
+            file.write(LINK_DOWN_SCRIPT.format(compute_ip=compute_ip))
+        client = SSHClient(compute_ip,
+                           self.installer.node_user_name,
+                           key_filename=self.installer.get_ssh_key_from_installer(),
+                           look_for_keys=True,
+                           log=self.log)
+        client.scp('./disable_network.sh', 'disable_network.sh')
+        command = 'bash disable_network.sh > disable_network.log 2>&1 &'
+        client.ssh(command)