Merge "Update QoS scenario test"

This commit is contained in:
Zuul 2018-10-23 02:24:55 +00:00 committed by Gerrit Code Review
commit 4a7b6dc8cc
1 changed files with 110 additions and 21 deletions

View File

@ -79,6 +79,7 @@ class QoSTestMixin(object):
FILE_PATH = "/tmp/img"
NC_PORT = 1234
FILE_DOWNLOAD_TIMEOUT = 120
def _create_file_for_bw_tests(self, ssh_client):
cmd = ("(dd if=/dev/zero bs=%(bs)d count=%(count)d of=%(file_path)s) "
@ -91,7 +92,7 @@ class QoSTestMixin(object):
raise sc_exceptions.FileCreationFailedException(
file=QoSTestMixin.FILE_PATH)
def _check_bw(self, ssh_client, host, port):
def _check_bw(self, ssh_client, host, port, expected_bw=LIMIT_BYTES_SEC):
cmd = "killall -q nc"
try:
ssh_client.exec_command(cmd)
@ -101,14 +102,15 @@ class QoSTestMixin(object):
'port': port, 'file_path': QoSTestMixin.FILE_PATH})
ssh_client.exec_command(cmd)
# Open TCP socket to remote VM and download big file
start_time = time.time()
client_socket = _connect_socket(host, port)
total_bytes_read = 0
while total_bytes_read < QoSTestMixin.FILE_SIZE:
data = client_socket.recv(QoSTestMixin.BUFFER_SIZE)
total_bytes_read += len(data)
# Calculate and return actual BW + logging result
time_elapsed = time.time() - start_time
bytes_per_second = total_bytes_read / time_elapsed
@ -118,8 +120,7 @@ class QoSTestMixin(object):
{'time_elapsed': time_elapsed,
'total_bytes_read': total_bytes_read,
'bytes_per_second': bytes_per_second})
return bytes_per_second <= QoSTestMixin.LIMIT_BYTES_SEC
return bytes_per_second <= expected_bw
def _create_ssh_client(self):
return ssh.Client(self.fip['floating_ip_address'],
@ -154,30 +155,118 @@ class QoSTest(QoSTestMixin, base.BaseTempestTestCase):
def resource_setup(cls):
super(QoSTest, cls).resource_setup()
@decorators.idempotent_id('1f7ed39b-428f-410a-bd2b-db9f465680df')
def test_qos(self):
"""This is a basic test that check that a QoS policy with
@decorators.idempotent_id('00682a0c-b72e-11e8-b81e-8c16450ea513')
def test_qos_basic_and_update(self):
"""This test covers both:
a bandwidth limit rule is applied correctly by sending
a file from the instance to the test node.
Then calculating the bandwidth every ~1 sec by the number of bits
received / elapsed time.
1) Basic QoS functionality
This is a basic test that check that a QoS policy with
a bandwidth limit rule is applied correctly by sending
a file from the instance to the test node.
Then calculating the bandwidth every ~1 sec by the number of bits
received / elapsed time.
2) Update QoS policy
Administrator has the ability to update existing QoS policy,
this test is planned to verify that:
- actual BW is affected as expected after updating QoS policy.
Test scenario:
1) Associating QoS Policy with "Original_bandwidth"
to the test node
2) BW validation - by downloading file on test node.
("Original_bandwidth" is expected)
3) Updating existing QoS Policy to a new BW value
"Updated_bandwidth"
4) BW validation - by downloading file on test node.
("Updated_bandwidth" is expected)
Note:
There are two options to associate QoS policy to VM:
"Neutron Port" or "Network", in this test
both options are covered.
"""
# Setup resources
self._test_basic_resources()
policy_id = self._create_qos_policy()
ssh_client = self._create_ssh_client()
self.os_admin.network_client.create_bandwidth_limit_rule(
policy_id, max_kbps=constants.LIMIT_KILO_BITS_PER_SECOND,
max_burst_kbps=constants.LIMIT_KILO_BITS_PER_SECOND)
port = self.client.list_ports(network_id=self.network['id'],
device_id=self.server[
'server']['id'])['ports'][0]
self.os_admin.network_client.update_port(port['id'],
qos_policy_id=policy_id)
# Create QoS policy
bw_limit_policy_id = self._create_qos_policy()
# As admin user create QoS rule
rule_id = self.os_admin.network_client.create_bandwidth_limit_rule(
policy_id=bw_limit_policy_id,
max_kbps=constants.LIMIT_KILO_BITS_PER_SECOND,
max_burst_kbps=constants.LIMIT_KILO_BITS_PER_SECOND)[
'bandwidth_limit_rule']['id']
# Associate QoS to the network
self.os_admin.network_client.update_network(
self.network['id'], qos_policy_id=bw_limit_policy_id)
# Create file on VM
self._create_file_for_bw_tests(ssh_client)
# Basic test, Check that actual BW while downloading file
# is as expected (Original BW)
utils.wait_until_true(lambda: self._check_bw(
ssh_client,
self.fip['floating_ip_address'],
port=self.NC_PORT),
timeout=120,
timeout=self.FILE_DOWNLOAD_TIMEOUT,
sleep=1)
# As admin user update QoS rule
self.os_admin.network_client.update_bandwidth_limit_rule(
bw_limit_policy_id,
rule_id,
max_kbps=constants.LIMIT_KILO_BITS_PER_SECOND * 2,
max_burst_kbps=constants.LIMIT_KILO_BITS_PER_SECOND * 2)
# Check that actual BW while downloading file
# is as expected (Update BW)
utils.wait_until_true(lambda: self._check_bw(
ssh_client,
self.fip['floating_ip_address'],
port=self.NC_PORT,
expected_bw=QoSTest.LIMIT_BYTES_SEC * 2),
timeout=self.FILE_DOWNLOAD_TIMEOUT,
sleep=1)
# Create a new QoS policy
bw_limit_policy_id_new = self._create_qos_policy()
# As admin user create a new QoS rule
rule_id_new = self.os_admin.network_client.create_bandwidth_limit_rule(
policy_id=bw_limit_policy_id_new,
max_kbps=constants.LIMIT_KILO_BITS_PER_SECOND,
max_burst_kbps=constants.LIMIT_KILO_BITS_PER_SECOND)[
'bandwidth_limit_rule']['id']
# Associate a new QoS policy to Neutron port
self.os_admin.network_client.update_port(
self.port['id'], qos_policy_id=bw_limit_policy_id_new)
# Check that actual BW while downloading file
# is as expected (Original BW)
utils.wait_until_true(lambda: self._check_bw(
ssh_client,
self.fip['floating_ip_address'],
port=self.NC_PORT),
timeout=self.FILE_DOWNLOAD_TIMEOUT,
sleep=1)
# As admin user update QoS rule
self.os_admin.network_client.update_bandwidth_limit_rule(
bw_limit_policy_id_new,
rule_id_new,
max_kbps=constants.LIMIT_KILO_BITS_PER_SECOND * 3,
max_burst_kbps=constants.LIMIT_KILO_BITS_PER_SECOND * 3)
# Check that actual BW while downloading file
# is as expected (Update BW)
utils.wait_until_true(lambda: self._check_bw(
ssh_client,
self.fip['floating_ip_address'],
port=self.NC_PORT, expected_bw=QoSTest.LIMIT_BYTES_SEC * 3),
timeout=self.FILE_DOWNLOAD_TIMEOUT,
sleep=1)