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# Copyright (c) 2010-2012 OpenStack, LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import re
import sys
import uuid
import time
import random
import signal
import socket
import logging
from contextlib import contextmanager
from optparse import Values
import eventlet
import eventlet.pools
from eventlet.green.httplib import CannotSendRequest
from swift.common.utils import config_true_value, LogAdapter
import swiftclient as client
from swift.common import direct_client
from swift.common.http import HTTP_CONFLICT
try:
import simplejson as json
except ImportError:
import json
def _func_on_containers(logger, conf, concurrency_key, func):
"""Run a function on each container with concurrency."""
bench = Bench(logger, conf, [])
pool = eventlet.GreenPool(int(getattr(conf, concurrency_key)))
for container in conf.containers:
pool.spawn_n(func, bench.url, bench.token, container)
pool.waitall()
def delete_containers(logger, conf):
"""Utility function to delete benchmark containers."""
def _deleter(url, token, container):
try:
client.delete_container(url, token, container)
except client.ClientException, e:
if e.http_status != HTTP_CONFLICT:
logger.warn("Unable to delete container '%s'. "
"Got http status '%d'."
% (container, e.http_status))
_func_on_containers(logger, conf, 'del_concurrency', _deleter)
def create_containers(logger, conf):
"""Utility function to create benchmark containers."""
_func_on_containers(logger, conf, 'put_concurrency', client.put_container)
class SourceFile(object):
"""
Iterable, file-like object to lazily emit a bunch of zeros in
reasonable-size chunks.
swift.common.direct_client wants iterables, but swiftclient wants
file-like objects where hasattr(thing, 'read') is true. Therefore,
this class can do both.
"""
def __init__(self, size, chunk_size=1024 * 64):
self.pos = 0
self.size = size
self.chunk_size = chunk_size
def __iter__(self):
return self
def __len__(self):
return self.size
def next(self):
if self.pos >= self.size:
raise StopIteration
chunk_size = min(self.size - self.pos, self.chunk_size)
yield '0' * chunk_size
self.pos += chunk_size
def read(self, desired_size):
chunk_size = min(self.size - self.pos, desired_size)
self.pos += chunk_size
return '0' * chunk_size
class ConnectionPool(eventlet.pools.Pool):
def __init__(self, url, size):
self.url = url
eventlet.pools.Pool.__init__(self, size, size)
def create(self):
return client.http_connection(self.url)
class BenchServer(object):
"""
A BenchServer binds to an IP/port and listens for bench jobs. A bench
job consists of the normal conf "dict" encoded in JSON, terminated with an
EOF. The log level is at least INFO, but DEBUG may also be specified in
the conf dict.
The server will wait forever for jobs, running them one at a time.
"""
def __init__(self, logger, bind_ip, bind_port):
self.logger = logger
self.bind_ip = bind_ip
self.bind_port = int(bind_port)
def run(self):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.logger.info('Binding to %s:%s', self.bind_ip, self.bind_port)
s.bind((self.bind_ip, self.bind_port))
s.listen(20)
while True:
client, address = s.accept()
self.logger.debug('Accepting connection from %s:%s', *address)
client_file = client.makefile('rb+', 1)
json_data = client_file.read()
conf = Values(json.loads(json_data))
self.logger.info(
'Starting run for %s:%s [put/get/del_concurrency: %s/%s/%s, '
'num_objects: %s, num_gets: %s]', address[0], address[1],
conf.put_concurrency, conf.get_concurrency,
conf.del_concurrency, conf.num_objects, conf.num_gets)
logger = logging.getLogger('bench-server')
level = logging.DEBUG if conf.log_level.lower() == 'debug' \
else logging.INFO
logger.setLevel(level)
loghandler = logging.StreamHandler(client_file)
logformat = logging.Formatter(
'%(server)s %(asctime)s %(levelname)s %(message)s')
loghandler.setFormatter(logformat)
logger.addHandler(loghandler)
logger = LogAdapter(logger, 'swift-bench-server')
controller = BenchController(logger, conf)
try:
controller.run()
except socket.error:
logger.warning('Socket error', exc_info=1)
logger.logger.removeHandler(loghandler)
client_file.close()
client.close()
self.logger.info('...bench run completed; waiting for next run.')
class Bench(object):
def __init__(self, logger, conf, names):
self.logger = logger
self.aborted = False
self.user = conf.user
self.key = conf.key
self.auth_url = conf.auth
self.use_proxy = config_true_value(conf.use_proxy)
self.auth_version = conf.auth_version
self.logger.info("Auth version: %s" % self.auth_version)
if self.use_proxy:
url, token = client.get_auth(self.auth_url, self.user, self.key,
auth_version=self.auth_version)
self.token = token
self.account = url.split('/')[-1]
if conf.url == '':
self.url = url
else:
self.url = conf.url
else:
self.token = 'SlapChop!'
self.account = conf.account
self.url = conf.url
self.ip, self.port = self.url.split('/')[2].split(':')
self.object_size = int(conf.object_size)
self.object_sources = conf.object_sources
self.lower_object_size = int(conf.lower_object_size)
self.upper_object_size = int(conf.upper_object_size)
self.files = []
if self.object_sources:
self.object_sources = self.object_sources.split()
self.files = [file(f, 'rb').read() for f in self.object_sources]
self.put_concurrency = int(conf.put_concurrency)
self.get_concurrency = int(conf.get_concurrency)
self.del_concurrency = int(conf.del_concurrency)
self.total_objects = int(conf.num_objects)
self.total_gets = int(conf.num_gets)
self.timeout = int(conf.timeout)
self.devices = conf.devices.split()
self.names = names
self.conn_pool = ConnectionPool(self.url,
max(self.put_concurrency,
self.get_concurrency,
self.del_concurrency))
def _log_status(self, title):
total = time.time() - self.beginbeat
self.logger.info(_('%(complete)s %(title)s [%(fail)s failures], '
'%(rate).01f/s'),
{'title': title, 'complete': self.complete,
'fail': self.failures,
'rate': (float(self.complete) / total)})
@contextmanager
def connection(self):
try:
hc = self.conn_pool.get()
try:
yield hc
except CannotSendRequest:
self.logger.info(_("CannotSendRequest. Skipping..."))
try:
hc.close()
except Exception:
pass
self.failures += 1
hc = self.conn_pool.create()
finally:
self.conn_pool.put(hc)
def run(self):
pool = eventlet.GreenPool(self.concurrency)
self.beginbeat = self.heartbeat = time.time()
self.heartbeat -= 13 # just to get the first report quicker
self.failures = 0
self.complete = 0
for i in xrange(self.total):
if self.aborted:
break
pool.spawn_n(self._run, i)
pool.waitall()
self._log_status(self.msg + ' **FINAL**')
def _run(self, thread):
return
class DistributedBenchController(object):
"""
This class manages a distributed swift-bench run. For this Controller
class to make sense, the conf.bench_clients list must contain at least one
entry.
The idea is to split the configured load between one or more
swift-bench-client processes, each of which use eventlet for concurrency.
We deliberately take a simple, naive approach with these limitations:
1) Concurrency, num_objects, and num_gets are spread evenly between the
swift-bench-client processes. With a low concurrency to
swift-bench-client count ratio, rounding may result in a greater
than desired aggregate concurrency.
2) Each swift-bench-client process runs independently so some may
finish up before others, i.e. the target aggregate concurrency is
not necessarily present the whole time. This may bias aggregate
reported rates lower than a more efficient architecture.
3) Because of #2, some swift-bench-client processes may be running GETs
while others are still runinng their PUTs. Because of this
potential skew, distributed runs will not isolate one operation at a
time like a single swift-bench run will.
3) Reported aggregate rates are simply the sum of each
swift-bench-client process reported FINAL number. That's probably
inaccurate somehow.
"""
def __init__(self, logger, conf):
self.logger = logger
# ... INFO 1000 PUTS **FINAL** [0 failures], 34.9/s
self.final_re = re.compile(
'INFO (\d+) (.*) \*\*FINAL\*\* \[(\d+) failures\], (\d+\.\d+)/s')
self.clients = conf.bench_clients
del conf.bench_clients
for k in ['put_concurrency', 'get_concurrency', 'del_concurrency',
'num_objects', 'num_gets']:
setattr(conf, k, max(1, int(getattr(conf, k)) / len(self.clients)))
self.conf = conf
def run(self):
eventlet.patcher.monkey_patch(socket=True)
pool = eventlet.GreenPool(size=len(self.clients))
pile = eventlet.GreenPile(pool)
for client in self.clients:
pile.spawn(self.do_run, client)
results = {
'PUTS': dict(count=0, failures=0, rate=0.0),
'GETS': dict(count=0, failures=0, rate=0.0),
'DEL': dict(count=0, failures=0, rate=0.0),
}
for result in pile:
for k, v in result.iteritems():
target = results[k]
target['count'] += int(v['count'])
target['failures'] += int(v['failures'])
target['rate'] += float(v['rate'])
for k in ['PUTS', 'GETS', 'DEL']:
v = results[k]
self.logger.info('%d %s **FINAL** [%d failures], %.1f/s' % (
v['count'], k, v['failures'], v['rate']))
def do_run(self, client):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
ip, port = client.split(':')
s.connect((ip, int(port)))
s.sendall(json.dumps(self.conf.__dict__))
s.shutdown(socket.SHUT_WR)
s_file = s.makefile('rb', 1)
result = {}
for line in s_file:
match = self.final_re.search(line)
if match:
g = match.groups()
result[g[1]] = {
'count': g[0],
'failures': g[2],
'rate': g[3],
}
else:
sys.stderr.write('%s %s' % (client, line))
return result
class BenchController(object):
def __init__(self, logger, conf):
self.logger = logger
self.conf = conf
self.names = []
self.delete = config_true_value(conf.delete)
self.gets = int(conf.num_gets)
self.aborted = False
def sigint1(self, signum, frame):
if self.delete:
print >>sys.stderr, (
'SIGINT received; finishing up and running DELETE.\n'
'Send one more SIGINT to exit *immediately*.')
self.aborted = True
if self.running and not isinstance(self.running, BenchDELETE):
self.running.aborted = True
signal.signal(signal.SIGINT, self.sigint2)
else:
self.sigint2(signum, frame)
def sigint2(self, signum, frame):
sys.exit('Final SIGINT received.')
def run(self):
signal.signal(signal.SIGINT, self.sigint1)
puts = BenchPUT(self.logger, self.conf, self.names)
self.running = puts
puts.run()
if self.gets and not self.aborted:
gets = BenchGET(self.logger, self.conf, self.names)
self.running = gets
gets.run()
if self.delete:
dels = BenchDELETE(self.logger, self.conf, self.names)
self.running = dels
dels.run()
class BenchDELETE(Bench):
def __init__(self, logger, conf, names):
Bench.__init__(self, logger, conf, names)
self.concurrency = self.del_concurrency
self.total = len(names)
self.msg = 'DEL'
def _run(self, thread):
if time.time() - self.heartbeat >= 15:
self.heartbeat = time.time()
self._log_status('DEL')
device, partition, name, container_name = self.names.pop()
with self.connection() as conn:
try:
if self.use_proxy:
client.delete_object(self.url, self.token,
container_name, name, http_conn=conn)
else:
node = {'ip': self.ip, 'port': self.port, 'device': device}
direct_client.direct_delete_object(node, partition,
self.account,
container_name, name)
except client.ClientException, e:
self.logger.debug(str(e))
self.failures += 1
self.complete += 1
class BenchGET(Bench):
def __init__(self, logger, conf, names):
Bench.__init__(self, logger, conf, names)
self.concurrency = self.get_concurrency
self.total = self.total_gets
self.msg = 'GETS'
def _run(self, thread):
if time.time() - self.heartbeat >= 15:
self.heartbeat = time.time()
self._log_status('GETS')
device, partition, name, container_name = random.choice(self.names)
with self.connection() as conn:
try:
if self.use_proxy:
client.get_object(self.url, self.token,
container_name, name, http_conn=conn)
else:
node = {'ip': self.ip, 'port': self.port, 'device': device}
direct_client.direct_get_object(node, partition,
self.account,
container_name, name)
except client.ClientException, e:
self.logger.debug(str(e))
self.failures += 1
self.complete += 1
class BenchPUT(Bench):
def __init__(self, logger, conf, names):
Bench.__init__(self, logger, conf, names)
self.concurrency = self.put_concurrency
self.total = self.total_objects
self.msg = 'PUTS'
self.containers = conf.containers
def _run(self, thread):
if time.time() - self.heartbeat >= 15:
self.heartbeat = time.time()
self._log_status('PUTS')
name = uuid.uuid4().hex
if self.object_sources:
source = random.choice(self.files)
elif self.upper_object_size > self.lower_object_size:
source = SourceFile(random.randint(self.lower_object_size,
self.upper_object_size))
else:
source = SourceFile(self.object_size)
device = random.choice(self.devices)
partition = str(random.randint(1, 3000))
container_name = random.choice(self.containers)
with self.connection() as conn:
try:
if self.use_proxy:
client.put_object(self.url, self.token,
container_name, name, source,
content_length=len(source),
http_conn=conn)
else:
node = {'ip': self.ip, 'port': self.port, 'device': device}
direct_client.direct_put_object(node, partition,
self.account,
container_name, name,
source,
content_length=len(source))
except client.ClientException, e:
self.logger.debug(str(e))
self.failures += 1
else:
self.names.append((device, partition, name, container_name))
self.complete += 1
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