ceph/qa/tasks/cbt.py
Kefu Chai d7258ea7fd qa/tasks: use next(iter(..)) for accessing first element in a view
in python2, dict.values() and dict.keys() return lists. but in python3,
they return views, which cannot be indexed directly using an integer index.

there are three use cases when we access these views in python3:

1. get the first element
2. get all the elements and then *might* want to access them by index
3. get the first element assuming there is only a single element in
   the view
4. iterate thru the view

in the 1st case, we cannot assume the number of elements, so to be
python3 compatible, we should use `next(iter(a_dict))` instead.

in the 2nd case, in this change, the view is materialized using
`list(a_dict)`.

in the 3rd case, we can just continue using the short hand of
```py
(first_element,) = a_dict.keys()
```
to unpack the view. this works in both python2 and python3.

in the 4th case, the existing code works in both python2 and python3, as
both list and view can be iterated using `iter`, and `len` works as
well.

Signed-off-by: Kefu Chai <kchai@redhat.com>
2020-04-07 20:33:47 +08:00

293 lines
11 KiB
Python

import logging
import os
import yaml
from teuthology import misc
from teuthology.orchestra import run
from teuthology.task import Task
log = logging.getLogger(__name__)
class CBT(Task):
"""
Passes through a CBT configuration yaml fragment.
"""
def __init__(self, ctx, config):
super(CBT, self).__init__(ctx, config)
self.log = log
def hosts_of_type(self, type_):
return [r.name for r in self.ctx.cluster.only(misc.is_type(type_)).remotes.keys()]
def generate_cbt_config(self):
mon_hosts = self.hosts_of_type('mon')
osd_hosts = self.hosts_of_type('osd')
client_hosts = self.hosts_of_type('client')
rgw_client = {}
rgw_client[client_hosts[0]] = None
rgw_hosts = self.config.get('cluster', {}).get('rgws', rgw_client)
cluster_config = dict(
user=self.config.get('cluster', {}).get('user', 'ubuntu'),
head=mon_hosts[0],
osds=osd_hosts,
mons=mon_hosts,
clients=client_hosts,
rgws=rgw_hosts,
osds_per_node=self.config.get('cluster', {}).get('osds_per_node', 1),
rebuild_every_test=False,
use_existing=True,
is_teuthology=self.config.get('cluster', {}).get('is_teuthology', True),
iterations=self.config.get('cluster', {}).get('iterations', 1),
tmp_dir='/tmp/cbt',
pool_profiles=self.config.get('cluster', {}).get('pool_profiles'),
)
benchmark_config = self.config.get('benchmarks')
benchmark_type = next(iter(benchmark_config.keys()))
if benchmark_type in ['librbdfio', 'fio']:
testdir = misc.get_testdir(self.ctx)
benchmark_config[benchmark_type]['cmd_path'] = os.path.join(testdir, 'fio/fio')
if benchmark_type == 'cosbench':
# create cosbench_dir and cosbench_xml_dir
testdir = misc.get_testdir(self.ctx)
benchmark_config['cosbench']['cosbench_dir'] = os.path.join(testdir, 'cos')
benchmark_config['cosbench']['cosbench_xml_dir'] = os.path.join(testdir, 'xml')
self.ctx.cluster.run(args=['mkdir', '-p', '-m0755', '--', benchmark_config['cosbench']['cosbench_xml_dir']])
benchmark_config['cosbench']['controller'] = osd_hosts[0]
# set auth details
remotes_and_roles = self.ctx.cluster.remotes.items()
ips = [host for (host, port) in
(remote.ssh.get_transport().getpeername() for (remote, role_list) in remotes_and_roles)]
benchmark_config['cosbench']['auth'] = "username=cosbench:operator;password=intel2012;url=http://%s:80/auth/v1.0;retry=9" %(ips[0])
client_endpoints_config = self.config.get('client_endpoints', None)
return dict(
cluster=cluster_config,
benchmarks=benchmark_config,
client_endpoints = client_endpoints_config,
)
def install_dependencies(self):
system_type = misc.get_system_type(self.first_mon)
if system_type == 'rpm':
install_cmd = ['sudo', 'yum', '-y', 'install']
cbt_depends = ['python3-yaml', 'python3-lxml', 'librbd-devel', 'pdsh', 'collectl']
else:
install_cmd = ['sudo', 'apt-get', '-y', '--force-yes', 'install']
cbt_depends = ['python3-yaml', 'python3-lxml', 'librbd-dev', 'collectl']
self.first_mon.run(args=install_cmd + cbt_depends)
benchmark_type = next(iter(self.cbt_config.get('benchmarks').keys()))
self.log.info('benchmark: %s', benchmark_type)
if benchmark_type in ['librbdfio', 'fio']:
# install fio
testdir = misc.get_testdir(self.ctx)
self.first_mon.run(
args=[
'git', 'clone', '-b', 'master',
'https://github.com/axboe/fio.git',
'{tdir}/fio'.format(tdir=testdir)
]
)
self.first_mon.run(
args=[
'cd', os.path.join(testdir, 'fio'), run.Raw('&&'),
'./configure', run.Raw('&&'),
'make'
]
)
if benchmark_type == 'cosbench':
# install cosbench
self.log.info('install dependencies for cosbench')
if system_type == 'rpm':
cosbench_depends = ['wget', 'unzip', 'java-1.7.0-openjdk', 'curl']
else:
cosbench_depends = ['wget', 'unzip', 'openjdk-8-jre', 'curl']
self.first_mon.run(args=install_cmd + cosbench_depends)
testdir = misc.get_testdir(self.ctx)
cosbench_version = '0.4.2.c3'
cosbench_location = 'https://github.com/intel-cloud/cosbench/releases/download/v0.4.2.c3/0.4.2.c3.zip'
os_version = misc.get_system_type(self.first_mon, False, True)
# additional requirements for bionic
if os_version == '18.04':
self.first_mon.run(
args=['sudo', 'apt-get', '-y', 'purge', 'openjdk-11*'])
# use our own version of cosbench
cosbench_version = 'cosbench-0.4.2.c3.1'
# contains additional parameter "-N" to nc
cosbench_location = 'http://drop.ceph.com/qa/cosbench-0.4.2.c3.1.zip'
cosbench_dir = os.path.join(testdir, cosbench_version)
self.ctx.cluster.run(args=['mkdir', '-p', '-m0755', '--', cosbench_dir])
self.first_mon.run(
args=[
'cd', testdir, run.Raw('&&'),
'wget',
cosbench_location, run.Raw('&&'),
'unzip', '{name}.zip'.format(name=cosbench_version), '-d', cosbench_version
]
)
else:
self.first_mon.run(
args=[
'cd', testdir, run.Raw('&&'),
'wget',
cosbench_location, run.Raw('&&'),
'unzip', '{name}.zip'.format(name=cosbench_version)
]
)
self.first_mon.run(
args=[
'cd', testdir, run.Raw('&&'),
'ln', '-s', cosbench_version, 'cos',
]
)
self.first_mon.run(
args=[
'cd', os.path.join(testdir, 'cos'), run.Raw('&&'),
'chmod', '+x', run.Raw('*.sh'),
]
)
# start cosbench and check info
self.log.info('start cosbench')
self.first_mon.run(
args=[
'cd', testdir, run.Raw('&&'),
'cd', 'cos', run.Raw('&&'),
'sh', 'start-all.sh'
]
)
self.log.info('check cosbench info')
self.first_mon.run(
args=[
'cd', testdir, run.Raw('&&'),
'cd', 'cos', run.Raw('&&'),
'sh', 'cli.sh', 'info'
]
)
def checkout_cbt(self):
testdir = misc.get_testdir(self.ctx)
repo = self.config.get('repo', 'https://github.com/ceph/cbt.git')
branch = self.config.get('branch', 'master')
branch = self.config.get('force-branch', branch)
sha1 = self.config.get('sha1')
if sha1 is None:
self.first_mon.run(
args=[
'git', 'clone', '--depth', '1', '-b', branch, repo,
'{tdir}/cbt'.format(tdir=testdir)
]
)
else:
self.first_mon.run(
args=[
'git', 'clone', '-b', branch, repo,
'{tdir}/cbt'.format(tdir=testdir)
]
)
self.first_mon.run(
args=[
'cd', os.path.join(testdir, 'cbt'), run.Raw('&&'),
'git', 'reset', '--hard', sha1,
]
)
def setup(self):
super(CBT, self).setup()
self.first_mon = next(iter(self.ctx.cluster.only(misc.get_first_mon(self.ctx, self.config)).remotes.keys()))
self.cbt_config = self.generate_cbt_config()
self.log.info('cbt configuration is %s', self.cbt_config)
self.cbt_dir = os.path.join(misc.get_archive_dir(self.ctx), 'cbt')
self.ctx.cluster.run(args=['mkdir', '-p', '-m0755', '--', self.cbt_dir])
misc.write_file(self.first_mon, os.path.join(self.cbt_dir, 'cbt_config.yaml'),
yaml.safe_dump(self.cbt_config, default_flow_style=False))
self.checkout_cbt()
self.install_dependencies()
def begin(self):
super(CBT, self).begin()
testdir = misc.get_testdir(self.ctx)
self.first_mon.run(
args=[
'{tdir}/cbt/cbt.py'.format(tdir=testdir),
'-a', self.cbt_dir,
'{cbtdir}/cbt_config.yaml'.format(cbtdir=self.cbt_dir),
],
)
preserve_file = os.path.join(self.ctx.archive, '.preserve')
open(preserve_file, 'a').close()
def end(self):
super(CBT, self).end()
testdir = misc.get_testdir(self.ctx)
self.first_mon.run(
args=[
'rm', '--one-file-system', '-rf', '--',
'{tdir}/cbt'.format(tdir=testdir),
]
)
benchmark_type = next(iter(self.cbt_config.get('benchmarks').keys()))
if benchmark_type in ['librbdfio', 'fio']:
self.first_mon.run(
args=[
'rm', '--one-file-system', '-rf', '--',
'{tdir}/fio'.format(tdir=testdir),
]
)
if benchmark_type == 'cosbench':
os_version = misc.get_system_type(self.first_mon, False, True)
if os_version == '18.04':
cosbench_version = 'cosbench-0.4.2.c3.1'
else:
cosbench_version = '0.4.2.c3'
# note: stop-all requires 'nc'
self.first_mon.run(
args=[
'cd', testdir, run.Raw('&&'),
'cd', 'cos', run.Raw('&&'),
'sh', 'stop-all.sh',
run.Raw('||'), 'true'
]
)
self.first_mon.run(
args=[
'sudo', 'killall', '-9', 'java',
run.Raw('||'), 'true'
]
)
self.first_mon.run(
args=[
'rm', '--one-file-system', '-rf', '--',
'{tdir}/cos'.format(tdir=testdir),
]
)
self.first_mon.run(
args=[
'rm', '--one-file-system', '-rf', '--',
'{tdir}/{version}'.format(tdir=testdir, version=cosbench_version),
]
)
self.first_mon.run(
args=[
'rm', '--one-file-system', '-rf', '--',
'{tdir}/{version}.zip'.format(tdir=testdir, version=cosbench_version),
]
)
self.first_mon.run(
args=[
'rm', '--one-file-system', '-rf', '--',
'{tdir}/xml'.format(tdir=testdir),
]
)
task = CBT