Add create instances

JIRA: DOCTOR-93

Change-Id: I7645c1cc0c76ff86b9fbcc01c19038469fc9b9b4
Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

1 files changed, 114 insertions, 0 deletions

diff --git a/tests/instance.py b/tests/instance.py
new file mode 100644
index 00000000..c6acbc3d
--- /dev/null
+++ b/tests/instance.py
@@ -0,0 +1,114 @@
+##############################################################################
+# 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
+##############################################################################
+import os
+import time
+
+from oslo_config import cfg
+
+from identity_auth import get_identity_auth
+from identity_auth import get_session
+from os_clients import neutron_client
+from os_clients import nova_client
+
+OPTS = [
+    cfg.StrOpt('flavor',
+               default='m1.tiny',
+               help='the name of flavor',
+               required=True),
+    cfg.IntOpt('instance_count',
+               default=os.environ.get('VM_COUNT', 1),
+               help='the count of instance',
+               required=True),
+    cfg.StrOpt('instance_basename',
+               default='doctor_vm',
+               help='the base name of instance',
+               required=True),
+]
+
+
+class Instance(object):
+
+    def __init__(self, conf, log):
+        self.conf = conf
+        self.log = log
+        self.auth = get_identity_auth(username=self.conf.doctor_user,
+                                      password=self.conf.doctor_passwd,
+                                      project=self.conf.doctor_project)
+        self.nova = \
+            nova_client(conf.nova_version,
+                        get_session(auth=self.auth))
+        self.neutron = neutron_client(get_session(auth=self.auth))
+        self.servers = {}
+        self.vm_names = []
+
+    def create(self):
+        self.log.info('instance create start......')
+
+        # get flavor, image and network for vm boot
+        flavors = {flavor.name: flavor for flavor in self.nova.flavors.list()}
+        flavor = flavors.get(self.conf.flavor)
+        image = self.nova.glance.find_image(self.conf.image_name)
+        network = self.neutron.list_networks(name=self.conf.net_name)['networks'][0]
+        nics = {'net-id': network['id']}
+
+        self.servers = \
+            {getattr(server, 'name'): server
+             for server in self.nova.servers.list()}
+        for i in range(0, self.conf.instance_count):
+            vm_name = "%s%d"%(self.conf.instance_basename, i)
+            self.vm_names.append(vm_name)
+            if vm_name not in self.servers:
+                server = self.nova.servers.create(vm_name, image,
+                                                  flavor, nics=[nics])
+                self.servers[vm_name] = server
+                time.sleep(0.1)
+
+        self.log.info('instance create end......')
+
+    def delete(self):
+        self.log.info('instance delete start.......')
+
+        for vm_name in self.vm_names:
+            if vm_name in self.servers:
+                self.nova.servers.delete(self.servers[vm_name])
+                time.sleep(0.1)
+
+        # check that all vms are deleted
+        while self.nova.servers.list():
+            time.sleep(0.1)
+        self.servers.clear()
+        del self.vm_names[:]
+
+        self.log.info('instance delete end.......')
+
+    def wait_for_vm_launch(self):
+        self.log.info('wait for vm launch start......')
+
+        wait_time = 60
+        count = 0
+        while count < wait_time:
+            active_count = 0
+            for vm_name in self.vm_names:
+                server = self.nova.servers.get(self.servers[vm_name])
+                server_status = getattr(server, 'status').lower()
+                if 'active' == server_status:
+                    active_count += 1
+                elif 'error' == server_status:
+                    raise Exception('vm launched with error state')
+                else:
+                    time.sleep(2)
+                    count += 1
+                    continue
+            if active_count == self.conf.instance_count:
+                self.log.info('wait for vm launch end......')
+                return
+            count += 1
+            time.sleep(2)
+        raise Exception('time out for vm launch')
+