A initial HA test case

1)stop an openstack service
2)then monitor the corresponding api and check the availability of it
3)recovery the openstack service

JIRA: YARDSTICK-149

Change-Id: Id7b77d2f5c71844729c04f37442c8cfaa270ab12
Signed-off-by: wym_libra <yimin.wang@huawei.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/yardstick/benchmark/scenarios/availability/monitor.py b/yardstick/benchmark/scenarios/availability/monitor.py
new file mode 100755
index 000000000..3193d3304
--- /dev/null
+++ b/yardstick/benchmark/scenarios/availability/monitor.py
@@ -0,0 +1,114 @@
+##############################################################################
+# Copyright (c) 2015 Huawei Technologies Co.,Ltd. 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
+##############################################################################
+import logging
+import multiprocessing
+import subprocess
+import traceback
+import time
+
+LOG = logging.getLogger(__name__)
+
+
+def _execute_shell_command(command):
+    '''execute shell script with error handling'''
+    exitcode = 0
+    output = []
+    try:
+        output = subprocess.check_output(command, shell=True)
+    except Exception:
+        exitcode = -1
+        output = traceback.format_exc()
+        LOG.error("exec command '%s' error:\n " % command)
+        LOG.error(traceback.format_exc())
+
+    return exitcode, output
+
+
+def _monitor_process(config, queue, event):
+
+    total_time = 0
+    outage_time = 0
+    total_count = 0
+    outage_count = 0
+    first_outage = 0
+    last_outage = 0
+
+    wait_time = config.get("duration", 0)
+    cmd = config.get("monitor_cmd", None)
+    if cmd is None:
+        LOG.error("There are no monitor cmd!")
+        return
+
+    queue.put("started")
+
+    begin_time = time.time()
+    while True:
+
+        total_count = total_count + 1
+
+        one_check_begin_time = time.time()
+        exit_status, stdout = _execute_shell_command(cmd)
+        one_check_end_time = time.time()
+
+        LOG.info("the exit_status:%s stdout:%s" % (exit_status, stdout))
+        if exit_status:
+            outage_count = outage_count + 1
+
+            outage_time = outage_time + (
+                one_check_end_time - one_check_begin_time)
+
+            if not first_outage:
+                first_outage = one_check_begin_time
+
+            last_outage = one_check_end_time
+
+        if event.is_set():
+            LOG.debug("the monitor process stop")
+            break
+
+        if wait_time > 0:
+            time.sleep(wait_time)
+
+    end_time = time.time()
+    total_time = end_time - begin_time
+
+    queue.put({"total_time": total_time,
+               "outage_time": last_outage-first_outage,
+               "total_count": total_count,
+               "outage_count": outage_count})
+
+
+class Monitor:
+
+    def __init__(self):
+        self._result = []
+        self._monitor_process = []
+
+    def setup(self, config):
+        self._config = config
+
+    def start(self):
+        self._queue = multiprocessing.Queue()
+        self._event = multiprocessing.Event()
+        self._monitor_process = multiprocessing.Process(
+            target=_monitor_process, name="Monitor",
+            args=(self._config, self._queue, self._event))
+
+        self._monitor_process.start()
+        ret = self._queue.get()
+        if ret == "started":
+            LOG.debug("monitor process started!")
+
+    def stop(self):
+        self._event.set()
+        self._result = self._queue.get()
+        LOG.debug("stop the monitor process. the result:%s" % self._result)
+
+    def get_result(self):
+        return self._result