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import logging
import os
import os.path
import shutil
import subprocess
import tempfile
import time
from six.moves import urllib
import uuid
from six.moves.urllib.parse import urlparse # pylint: disable-msg=E0611,F0401
from test.service import ExternalService, SpawnedService
from test.testutil import get_open_port
log = logging.getLogger(__name__)
class Fixture(object):
kafka_version = os.environ.get('KAFKA_VERSION', '0.8.0')
scala_version = os.environ.get("SCALA_VERSION", '2.8.0')
project_root = os.environ.get('PROJECT_ROOT', os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
kafka_root = os.environ.get("KAFKA_ROOT", os.path.join(project_root, 'servers', kafka_version, "kafka-bin"))
ivy_root = os.environ.get('IVY_ROOT', os.path.expanduser("~/.ivy2/cache"))
@classmethod
def download_official_distribution(cls,
kafka_version=None,
scala_version=None,
output_dir=None):
if not kafka_version:
kafka_version = cls.kafka_version
if not scala_version:
scala_version = cls.scala_version
if not output_dir:
output_dir = os.path.join(cls.project_root, 'servers', 'dist')
distfile = 'kafka_%s-%s' % (scala_version, kafka_version,)
url_base = 'https://archive.apache.org/dist/kafka/%s/' % (kafka_version,)
output_file = os.path.join(output_dir, distfile + '.tgz')
if os.path.isfile(output_file):
log.info("Found file already on disk: %s", output_file)
return output_file
# New tarballs are .tgz, older ones are sometimes .tar.gz
try:
url = url_base + distfile + '.tgz'
log.info("Attempting to download %s", url)
response = urllib.request.urlopen(url)
except urllib.error.HTTPError:
log.exception("HTTP Error")
url = url_base + distfile + '.tar.gz'
log.info("Attempting to download %s", url)
response = urllib.request.urlopen(url)
log.info("Saving distribution file to %s", output_file)
with open(output_file, 'w') as output_file_fd:
output_file_fd.write(response.read())
return output_file
@classmethod
def test_resource(cls, filename):
return os.path.join(cls.project_root, "servers", cls.kafka_version, "resources", filename)
@classmethod
def kafka_run_class_args(cls, *args):
result = [os.path.join(cls.kafka_root, 'bin', 'kafka-run-class.sh')]
result.extend(args)
return result
@classmethod
def kafka_run_class_env(cls):
env = os.environ.copy()
env['KAFKA_LOG4J_OPTS'] = "-Dlog4j.configuration=file:%s" % cls.test_resource("log4j.properties")
return env
@classmethod
def render_template(cls, source_file, target_file, binding):
with open(source_file, "r") as handle:
template = handle.read()
with open(target_file, "w") as handle:
handle.write(template.format(**binding))
class ZookeeperFixture(Fixture):
@classmethod
def instance(cls):
if "ZOOKEEPER_URI" in os.environ:
parse = urlparse(os.environ["ZOOKEEPER_URI"])
(host, port) = (parse.hostname, parse.port)
fixture = ExternalService(host, port)
else:
(host, port) = ("127.0.0.1", get_open_port())
fixture = cls(host, port)
fixture.open()
return fixture
def __init__(self, host, port):
self.host = host
self.port = port
self.tmp_dir = None
self.child = None
def out(self, message):
log.info("*** Zookeeper [%s:%d]: %s", self.host, self.port, message)
def open(self):
self.tmp_dir = tempfile.mkdtemp()
self.out("Running local instance...")
log.info(" host = %s", self.host)
log.info(" port = %s", self.port)
log.info(" tmp_dir = %s", self.tmp_dir)
# Generate configs
template = self.test_resource("zookeeper.properties")
properties = os.path.join(self.tmp_dir, "zookeeper.properties")
self.render_template(template, properties, vars(self))
# Configure Zookeeper child process
args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain", properties)
env = self.kafka_run_class_env()
# Party!
self.out("Starting...")
timeout = 5
max_timeout = 30
backoff = 1
while True:
self.child = SpawnedService(args, env)
self.child.start()
timeout = min(timeout, max_timeout)
if self.child.wait_for(r"binding to port", timeout=timeout):
break
self.child.stop()
timeout *= 2
time.sleep(backoff)
self.out("Done!")
def close(self):
self.out("Stopping...")
self.child.stop()
self.child = None
self.out("Done!")
shutil.rmtree(self.tmp_dir)
class KafkaFixture(Fixture):
@classmethod
def instance(cls, broker_id, zk_host, zk_port, zk_chroot=None, replicas=1, partitions=2):
if zk_chroot is None:
zk_chroot = "kafka-python_" + str(uuid.uuid4()).replace("-", "_")
if "KAFKA_URI" in os.environ:
parse = urlparse(os.environ["KAFKA_URI"])
(host, port) = (parse.hostname, parse.port)
fixture = ExternalService(host, port)
else:
(host, port) = ("127.0.0.1", get_open_port())
fixture = KafkaFixture(host, port, broker_id, zk_host, zk_port, zk_chroot, replicas, partitions)
fixture.open()
return fixture
def __init__(self, host, port, broker_id, zk_host, zk_port, zk_chroot, replicas=1, partitions=2):
self.host = host
self.port = port
self.broker_id = broker_id
self.zk_host = zk_host
self.zk_port = zk_port
self.zk_chroot = zk_chroot
self.replicas = replicas
self.partitions = partitions
self.tmp_dir = None
self.child = None
self.running = False
def out(self, message):
log.info("*** Kafka [%s:%d]: %s", self.host, self.port, message)
def open(self):
if self.running:
self.out("Instance already running")
return
self.tmp_dir = tempfile.mkdtemp()
self.out("Running local instance...")
log.info(" host = %s", self.host)
log.info(" port = %s", self.port)
log.info(" broker_id = %s", self.broker_id)
log.info(" zk_host = %s", self.zk_host)
log.info(" zk_port = %s", self.zk_port)
log.info(" zk_chroot = %s", self.zk_chroot)
log.info(" replicas = %s", self.replicas)
log.info(" partitions = %s", self.partitions)
log.info(" tmp_dir = %s", self.tmp_dir)
# Create directories
os.mkdir(os.path.join(self.tmp_dir, "logs"))
os.mkdir(os.path.join(self.tmp_dir, "data"))
# Generate configs
template = self.test_resource("kafka.properties")
properties = os.path.join(self.tmp_dir, "kafka.properties")
self.render_template(template, properties, vars(self))
# Party!
self.out("Creating Zookeeper chroot node...")
args = self.kafka_run_class_args("org.apache.zookeeper.ZooKeeperMain",
"-server", "%s:%d" % (self.zk_host, self.zk_port),
"create",
"/%s" % self.zk_chroot,
"kafka-python")
env = self.kafka_run_class_env()
proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
if proc.wait() != 0:
self.out("Failed to create Zookeeper chroot node")
self.out(proc.stdout.read())
self.out(proc.stderr.read())
raise RuntimeError("Failed to create Zookeeper chroot node")
self.out("Done!")
self.out("Starting...")
# Configure Kafka child process
args = self.kafka_run_class_args("kafka.Kafka", properties)
env = self.kafka_run_class_env()
timeout = 5
max_timeout = 30
backoff = 1
while True:
self.child = SpawnedService(args, env)
self.child.start()
timeout = min(timeout, max_timeout)
if self.child.wait_for(r"\[Kafka Server %d\], Started" %
self.broker_id, timeout=timeout):
break
self.child.stop()
timeout *= 2
time.sleep(backoff)
self.out("Done!")
self.running = True
def close(self):
if not self.running:
self.out("Instance already stopped")
return
self.out("Stopping...")
self.child.stop()
self.child = None
self.out("Done!")
shutil.rmtree(self.tmp_dir)
self.running = False
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