c3cdce0a0d
* Remove some uses of six, to avoid circular imports. - Also edit fixutres.py directly for the same reason. - Switch to pyproject macros. - Less globs in %files. OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-kafka-python?expand=0&rev=28
673 lines
26 KiB
Python
673 lines
26 KiB
Python
from __future__ import absolute_import
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import atexit
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import logging
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import os
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import os.path
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import socket
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import subprocess
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import time
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import urllib
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import uuid
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import py
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from kafka import errors, KafkaAdminClient, KafkaClient, KafkaConsumer, KafkaProducer
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from kafka.errors import InvalidReplicationFactorError
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from kafka.protocol.admin import CreateTopicsRequest
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from kafka.protocol.metadata import MetadataRequest
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from test.testutil import env_kafka_version, random_string
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from test.service import ExternalService, SpawnedService
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log = logging.getLogger(__name__)
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def get_open_port():
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sock = socket.socket()
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sock.bind(("", 0))
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port = sock.getsockname()[1]
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sock.close()
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return port
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def gen_ssl_resources(directory):
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os.system("""
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cd {0}
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echo Generating SSL resources in {0}
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# Step 1
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keytool -keystore kafka.server.keystore.jks -alias localhost -validity 1 \
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-genkey -storepass foobar -keypass foobar \
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-dname "CN=localhost, OU=kafka-python, O=kafka-python, L=SF, ST=CA, C=US" \
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-ext SAN=dns:localhost
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# Step 2
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openssl genrsa -out ca-key 2048
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openssl req -new -x509 -key ca-key -out ca-cert -days 1 \
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-subj "/C=US/ST=CA/O=MyOrg, Inc./CN=mydomain.com"
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keytool -keystore kafka.server.truststore.jks -alias CARoot -import \
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-file ca-cert -storepass foobar -noprompt
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# Step 3
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keytool -keystore kafka.server.keystore.jks -alias localhost -certreq \
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-file cert-file -storepass foobar
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openssl x509 -req -CA ca-cert -CAkey ca-key -in cert-file -out cert-signed \
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-days 1 -CAcreateserial -passin pass:foobar
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keytool -keystore kafka.server.keystore.jks -alias CARoot -import \
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-file ca-cert -storepass foobar -noprompt
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keytool -keystore kafka.server.keystore.jks -alias localhost -import \
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-file cert-signed -storepass foobar -noprompt
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""".format(directory))
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class Fixture(object):
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kafka_version = os.environ.get('KAFKA_VERSION', '0.11.0.2')
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scala_version = os.environ.get("SCALA_VERSION", '2.8.0')
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project_root = os.environ.get('PROJECT_ROOT',
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os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
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kafka_root = os.environ.get("KAFKA_ROOT",
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os.path.join(project_root, 'servers', kafka_version, "kafka-bin"))
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def __init__(self):
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self.child = None
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@classmethod
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def download_official_distribution(cls,
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kafka_version=None,
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scala_version=None,
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output_dir=None):
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if not kafka_version:
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kafka_version = cls.kafka_version
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if not scala_version:
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scala_version = cls.scala_version
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if not output_dir:
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output_dir = os.path.join(cls.project_root, 'servers', 'dist')
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distfile = 'kafka_%s-%s' % (scala_version, kafka_version,)
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url_base = 'https://archive.apache.org/dist/kafka/%s/' % (kafka_version,)
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output_file = os.path.join(output_dir, distfile + '.tgz')
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if os.path.isfile(output_file):
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log.info("Found file already on disk: %s", output_file)
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return output_file
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# New tarballs are .tgz, older ones are sometimes .tar.gz
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try:
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url = url_base + distfile + '.tgz'
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log.info("Attempting to download %s", url)
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response = urllib.request.urlopen(url)
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except urllib.error.HTTPError:
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log.exception("HTTP Error")
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url = url_base + distfile + '.tar.gz'
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log.info("Attempting to download %s", url)
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response = urllib.request.urlopen(url)
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log.info("Saving distribution file to %s", output_file)
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with open(output_file, 'w') as output_file_fd:
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output_file_fd.write(response.read())
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return output_file
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@classmethod
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def test_resource(cls, filename):
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return os.path.join(cls.project_root, "servers", cls.kafka_version, "resources", filename)
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@classmethod
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def kafka_run_class_args(cls, *args):
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result = [os.path.join(cls.kafka_root, 'bin', 'kafka-run-class.sh')]
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result.extend([str(arg) for arg in args])
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return result
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def kafka_run_class_env(self):
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env = os.environ.copy()
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env['KAFKA_LOG4J_OPTS'] = "-Dlog4j.configuration=file:%s" % \
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(self.test_resource("log4j.properties"),)
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return env
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@classmethod
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def render_template(cls, source_file, target_file, binding):
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log.info('Rendering %s from template %s', target_file.strpath, source_file)
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with open(source_file, "r") as handle:
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template = handle.read()
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assert len(template) > 0, 'Empty template %s' % (source_file,)
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with open(target_file.strpath, "w") as handle:
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handle.write(template.format(**binding))
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handle.flush()
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os.fsync(handle)
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# fsync directory for durability
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# https://blog.gocept.com/2013/07/15/reliable-file-updates-with-python/
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dirfd = os.open(os.path.dirname(target_file.strpath), os.O_DIRECTORY)
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os.fsync(dirfd)
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os.close(dirfd)
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log.debug("Template string:")
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for line in template.splitlines():
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log.debug(' ' + line.strip())
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log.debug("Rendered template:")
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with open(target_file.strpath, 'r') as o:
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for line in o:
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log.debug(' ' + line.strip())
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log.debug("binding:")
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for key, value in binding.items():
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log.debug(" {key}={value}".format(key=key, value=value))
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def dump_logs(self):
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self.child.dump_logs()
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class ZookeeperFixture(Fixture):
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@classmethod
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def instance(cls):
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if "ZOOKEEPER_URI" in os.environ:
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parse = urllib.parse.urlparse(os.environ["ZOOKEEPER_URI"])
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(host, port) = (parse.hostname, parse.port)
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fixture = ExternalService(host, port)
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else:
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(host, port) = ("127.0.0.1", None)
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fixture = cls(host, port)
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fixture.open()
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return fixture
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def __init__(self, host, port, tmp_dir=None):
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super(ZookeeperFixture, self).__init__()
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self.host = host
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self.port = port
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self.tmp_dir = tmp_dir
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def kafka_run_class_env(self):
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env = super(ZookeeperFixture, self).kafka_run_class_env()
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env['LOG_DIR'] = self.tmp_dir.join('logs').strpath
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return env
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def out(self, message):
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log.info("*** Zookeeper [%s:%s]: %s", self.host, self.port or '(auto)', message)
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def open(self):
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if self.tmp_dir is None:
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self.tmp_dir = py.path.local.mkdtemp() #pylint: disable=no-member
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self.tmp_dir.ensure(dir=True)
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self.out("Running local instance...")
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log.info(" host = %s", self.host)
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log.info(" port = %s", self.port or '(auto)')
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log.info(" tmp_dir = %s", self.tmp_dir.strpath)
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# Configure Zookeeper child process
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template = self.test_resource("zookeeper.properties")
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properties = self.tmp_dir.join("zookeeper.properties")
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args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain",
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properties.strpath)
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env = self.kafka_run_class_env()
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# Party!
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timeout = 5
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max_timeout = 120
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backoff = 1
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end_at = time.time() + max_timeout
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tries = 1
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auto_port = (self.port is None)
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while time.time() < end_at:
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if auto_port:
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self.port = get_open_port()
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self.out('Attempting to start on port %d (try #%d)' % (self.port, tries))
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self.render_template(template, properties, vars(self))
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self.child = SpawnedService(args, env)
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self.child.start()
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timeout = min(timeout, max(end_at - time.time(), 0))
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if self.child.wait_for(r"binding to port", timeout=timeout):
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break
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self.child.dump_logs()
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self.child.stop()
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timeout *= 2
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time.sleep(backoff)
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tries += 1
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backoff += 1
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else:
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raise RuntimeError('Failed to start Zookeeper before max_timeout')
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self.out("Done!")
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atexit.register(self.close)
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def close(self):
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if self.child is None:
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return
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self.out("Stopping...")
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self.child.stop()
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self.child = None
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self.out("Done!")
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self.tmp_dir.remove()
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def __del__(self):
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self.close()
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class KafkaFixture(Fixture):
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broker_user = 'alice'
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broker_password = 'alice-secret'
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@classmethod
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def instance(cls, broker_id, zookeeper, zk_chroot=None,
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host=None, port=None,
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transport='PLAINTEXT', replicas=1, partitions=2,
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sasl_mechanism=None, auto_create_topic=True, tmp_dir=None):
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if zk_chroot is None:
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zk_chroot = "kafka-python_" + str(uuid.uuid4()).replace("-", "_")
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if "KAFKA_URI" in os.environ:
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parse = urllib.parse.urlparse(os.environ["KAFKA_URI"])
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(host, port) = (parse.hostname, parse.port)
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fixture = ExternalService(host, port)
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else:
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if host is None:
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host = "localhost"
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fixture = KafkaFixture(host, port, broker_id,
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zookeeper, zk_chroot,
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transport=transport,
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replicas=replicas, partitions=partitions,
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sasl_mechanism=sasl_mechanism,
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auto_create_topic=auto_create_topic,
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tmp_dir=tmp_dir)
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fixture.open()
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return fixture
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def __init__(self, host, port, broker_id, zookeeper, zk_chroot,
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replicas=1, partitions=2, transport='PLAINTEXT',
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sasl_mechanism=None, auto_create_topic=True,
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tmp_dir=None):
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super(KafkaFixture, self).__init__()
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self.host = host
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self.port = port
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self.broker_id = broker_id
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self.auto_create_topic = auto_create_topic
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self.transport = transport.upper()
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if sasl_mechanism is not None:
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self.sasl_mechanism = sasl_mechanism.upper()
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else:
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self.sasl_mechanism = None
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self.ssl_dir = self.test_resource('ssl')
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# TODO: checking for port connection would be better than scanning logs
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# until then, we need the pattern to work across all supported broker versions
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# The logging format changed slightly in 1.0.0
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self.start_pattern = r"\[Kafka ?Server (id=)?%d\],? started" % (broker_id,)
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# Need to wait until the broker has fetched user configs from zookeeper in case we use scram as sasl mechanism
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self.scram_pattern = r"Removing Produce quota for user %s" % (self.broker_user)
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self.zookeeper = zookeeper
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self.zk_chroot = zk_chroot
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# Add the attributes below for the template binding
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self.zk_host = self.zookeeper.host
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self.zk_port = self.zookeeper.port
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self.replicas = replicas
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self.partitions = partitions
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self.tmp_dir = tmp_dir
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self.running = False
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self._client = None
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self.sasl_config = ''
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self.jaas_config = ''
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def _sasl_config(self):
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if not self.sasl_enabled:
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return ''
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sasl_config = (
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'sasl.enabled.mechanisms={mechanism}\n'
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'sasl.mechanism.inter.broker.protocol={mechanism}\n'
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)
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return sasl_config.format(mechanism=self.sasl_mechanism)
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def _jaas_config(self):
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if not self.sasl_enabled:
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return ''
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elif self.sasl_mechanism == 'PLAIN':
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jaas_config = (
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'org.apache.kafka.common.security.plain.PlainLoginModule required\n'
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' username="{user}" password="{password}" user_{user}="{password}";\n'
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)
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elif self.sasl_mechanism in ("SCRAM-SHA-256", "SCRAM-SHA-512"):
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jaas_config = (
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'org.apache.kafka.common.security.scram.ScramLoginModule required\n'
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' username="{user}" password="{password}";\n'
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)
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else:
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raise ValueError("SASL mechanism {} currently not supported".format(self.sasl_mechanism))
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return jaas_config.format(user=self.broker_user, password=self.broker_password)
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def _add_scram_user(self):
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self.out("Adding SCRAM credentials for user {} to zookeeper.".format(self.broker_user))
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args = self.kafka_run_class_args(
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"kafka.admin.ConfigCommand",
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"--zookeeper",
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"%s:%d/%s" % (self.zookeeper.host,
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self.zookeeper.port,
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self.zk_chroot),
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"--alter",
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"--entity-type", "users",
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"--entity-name", self.broker_user,
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"--add-config",
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"{}=[password={}]".format(self.sasl_mechanism, self.broker_password),
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)
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env = self.kafka_run_class_env()
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proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = proc.communicate()
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if proc.returncode != 0:
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self.out("Failed to save credentials to zookeeper!")
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self.out(stdout)
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self.out(stderr)
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raise RuntimeError("Failed to save credentials to zookeeper!")
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self.out("User created.")
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@property
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def sasl_enabled(self):
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return self.sasl_mechanism is not None
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def bootstrap_server(self):
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return '%s:%d' % (self.host, self.port)
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def kafka_run_class_env(self):
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env = super(KafkaFixture, self).kafka_run_class_env()
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env['LOG_DIR'] = self.tmp_dir.join('logs').strpath
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return env
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def out(self, message):
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log.info("*** Kafka [%s:%s]: %s", self.host, self.port or '(auto)', message)
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def _create_zk_chroot(self):
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self.out("Creating Zookeeper chroot node...")
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args = self.kafka_run_class_args("org.apache.zookeeper.ZooKeeperMain",
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"-server",
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"%s:%d" % (self.zookeeper.host,
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self.zookeeper.port),
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"create",
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"/%s" % (self.zk_chroot,),
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"kafka-python")
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env = self.kafka_run_class_env()
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proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = proc.communicate()
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if proc.returncode != 0:
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self.out("Failed to create Zookeeper chroot node")
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self.out(stdout)
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self.out(stderr)
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raise RuntimeError("Failed to create Zookeeper chroot node")
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self.out("Kafka chroot created in Zookeeper!")
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def start(self):
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# Configure Kafka child process
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properties = self.tmp_dir.join("kafka.properties")
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jaas_conf = self.tmp_dir.join("kafka_server_jaas.conf")
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properties_template = self.test_resource("kafka.properties")
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jaas_conf_template = self.test_resource("kafka_server_jaas.conf")
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args = self.kafka_run_class_args("kafka.Kafka", properties.strpath)
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env = self.kafka_run_class_env()
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if self.sasl_enabled:
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opts = env.get('KAFKA_OPTS', '').strip()
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opts += ' -Djava.security.auth.login.config={}'.format(jaas_conf.strpath)
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env['KAFKA_OPTS'] = opts
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self.render_template(jaas_conf_template, jaas_conf, vars(self))
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timeout = 5
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max_timeout = 120
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backoff = 1
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end_at = time.time() + max_timeout
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tries = 1
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auto_port = (self.port is None)
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while time.time() < end_at:
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# We have had problems with port conflicts on travis
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# so we will try a different port on each retry
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# unless the fixture was passed a specific port
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if auto_port:
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self.port = get_open_port()
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self.out('Attempting to start on port %d (try #%d)' % (self.port, tries))
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self.render_template(properties_template, properties, vars(self))
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self.child = SpawnedService(args, env)
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self.child.start()
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timeout = min(timeout, max(end_at - time.time(), 0))
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if self._broker_ready(timeout) and self._scram_user_present(timeout):
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break
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self.child.dump_logs()
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self.child.stop()
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timeout *= 2
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time.sleep(backoff)
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tries += 1
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backoff += 1
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else:
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raise RuntimeError('Failed to start KafkaInstance before max_timeout')
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(self._client,) = self.get_clients(1, client_id='_internal_client')
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self.out("Done!")
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self.running = True
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def _broker_ready(self, timeout):
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return self.child.wait_for(self.start_pattern, timeout=timeout)
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def _scram_user_present(self, timeout):
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# no need to wait for scram user if scram is not used
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if not self.sasl_enabled or not self.sasl_mechanism.startswith('SCRAM-SHA-'):
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return True
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return self.child.wait_for(self.scram_pattern, timeout=timeout)
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def open(self):
|
|
if self.running:
|
|
self.out("Instance already running")
|
|
return
|
|
|
|
# Create directories
|
|
if self.tmp_dir is None:
|
|
self.tmp_dir = py.path.local.mkdtemp() #pylint: disable=no-member
|
|
self.tmp_dir.ensure(dir=True)
|
|
self.tmp_dir.ensure('logs', dir=True)
|
|
self.tmp_dir.ensure('data', dir=True)
|
|
|
|
self.out("Running local instance...")
|
|
log.info(" host = %s", self.host)
|
|
log.info(" port = %s", self.port or '(auto)')
|
|
log.info(" transport = %s", self.transport)
|
|
log.info(" sasl_mechanism = %s", self.sasl_mechanism)
|
|
log.info(" broker_id = %s", self.broker_id)
|
|
log.info(" zk_host = %s", self.zookeeper.host)
|
|
log.info(" zk_port = %s", self.zookeeper.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.strpath)
|
|
|
|
self._create_zk_chroot()
|
|
self.sasl_config = self._sasl_config()
|
|
self.jaas_config = self._jaas_config()
|
|
# add user to zookeeper for the first server
|
|
if self.sasl_enabled and self.sasl_mechanism.startswith("SCRAM-SHA") and self.broker_id == 0:
|
|
self._add_scram_user()
|
|
self.start()
|
|
|
|
atexit.register(self.close)
|
|
|
|
def __del__(self):
|
|
self.close()
|
|
|
|
def stop(self):
|
|
if not self.running:
|
|
self.out("Instance already stopped")
|
|
return
|
|
|
|
self.out("Stopping...")
|
|
self.child.stop()
|
|
self.child = None
|
|
self.running = False
|
|
self.out("Stopped!")
|
|
|
|
def close(self):
|
|
self.stop()
|
|
if self.tmp_dir is not None:
|
|
self.tmp_dir.remove()
|
|
self.tmp_dir = None
|
|
self.out("Done!")
|
|
|
|
def dump_logs(self):
|
|
super(KafkaFixture, self).dump_logs()
|
|
self.zookeeper.dump_logs()
|
|
|
|
def _send_request(self, request, timeout=None):
|
|
def _failure(error):
|
|
raise error
|
|
retries = 10
|
|
while True:
|
|
node_id = self._client.least_loaded_node()
|
|
for connect_retry in range(40):
|
|
self._client.maybe_connect(node_id)
|
|
if self._client.connected(node_id):
|
|
break
|
|
self._client.poll(timeout_ms=100)
|
|
else:
|
|
raise RuntimeError('Could not connect to broker with node id %d' % (node_id,))
|
|
|
|
try:
|
|
future = self._client.send(node_id, request)
|
|
future.error_on_callbacks = True
|
|
future.add_errback(_failure)
|
|
self._client.poll(future=future, timeout_ms=timeout)
|
|
return future.value
|
|
except Exception as exc:
|
|
time.sleep(1)
|
|
retries -= 1
|
|
if retries == 0:
|
|
raise exc
|
|
else:
|
|
pass # retry
|
|
|
|
def _create_topic(self, topic_name, num_partitions=None, replication_factor=None, timeout_ms=10000):
|
|
if num_partitions is None:
|
|
num_partitions = self.partitions
|
|
if replication_factor is None:
|
|
replication_factor = self.replicas
|
|
|
|
# Try different methods to create a topic, from the fastest to the slowest
|
|
if self.auto_create_topic and num_partitions == self.partitions and replication_factor == self.replicas:
|
|
self._create_topic_via_metadata(topic_name, timeout_ms)
|
|
elif env_kafka_version() >= (0, 10, 1, 0):
|
|
try:
|
|
self._create_topic_via_admin_api(topic_name, num_partitions, replication_factor, timeout_ms)
|
|
except InvalidReplicationFactorError:
|
|
# wait and try again
|
|
# on travis the brokers sometimes take a while to find themselves
|
|
time.sleep(0.5)
|
|
self._create_topic_via_admin_api(topic_name, num_partitions, replication_factor, timeout_ms)
|
|
else:
|
|
self._create_topic_via_cli(topic_name, num_partitions, replication_factor)
|
|
|
|
def _create_topic_via_metadata(self, topic_name, timeout_ms=10000):
|
|
self._send_request(MetadataRequest[0]([topic_name]), timeout_ms)
|
|
|
|
def _create_topic_via_admin_api(self, topic_name, num_partitions, replication_factor, timeout_ms=10000):
|
|
request = CreateTopicsRequest[0]([(topic_name, num_partitions,
|
|
replication_factor, [], [])], timeout_ms)
|
|
response = self._send_request(request, timeout=timeout_ms)
|
|
for topic_result in response.topic_errors:
|
|
error_code = topic_result[1]
|
|
if error_code != 0:
|
|
raise errors.for_code(error_code)
|
|
|
|
def _create_topic_via_cli(self, topic_name, num_partitions, replication_factor):
|
|
args = self.kafka_run_class_args('kafka.admin.TopicCommand',
|
|
'--zookeeper', '%s:%s/%s' % (self.zookeeper.host,
|
|
self.zookeeper.port,
|
|
self.zk_chroot),
|
|
'--create',
|
|
'--topic', topic_name,
|
|
'--partitions', self.partitions \
|
|
if num_partitions is None else num_partitions,
|
|
'--replication-factor', self.replicas \
|
|
if replication_factor is None \
|
|
else replication_factor)
|
|
if env_kafka_version() >= (0, 10):
|
|
args.append('--if-not-exists')
|
|
env = self.kafka_run_class_env()
|
|
proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
stdout, stderr = proc.communicate()
|
|
if proc.returncode != 0:
|
|
if 'kafka.common.TopicExistsException' not in stdout:
|
|
self.out("Failed to create topic %s" % (topic_name,))
|
|
self.out(stdout)
|
|
self.out(stderr)
|
|
raise RuntimeError("Failed to create topic %s" % (topic_name,))
|
|
|
|
def get_topic_names(self):
|
|
args = self.kafka_run_class_args('kafka.admin.TopicCommand',
|
|
'--zookeeper', '%s:%s/%s' % (self.zookeeper.host,
|
|
self.zookeeper.port,
|
|
self.zk_chroot),
|
|
'--list'
|
|
)
|
|
env = self.kafka_run_class_env()
|
|
env.pop('KAFKA_LOG4J_OPTS')
|
|
proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
stdout, stderr = proc.communicate()
|
|
if proc.returncode != 0:
|
|
self.out("Failed to list topics!")
|
|
self.out(stdout)
|
|
self.out(stderr)
|
|
raise RuntimeError("Failed to list topics!")
|
|
return stdout.decode().splitlines(False)
|
|
|
|
def create_topics(self, topic_names, num_partitions=None, replication_factor=None):
|
|
for topic_name in topic_names:
|
|
self._create_topic(topic_name, num_partitions, replication_factor)
|
|
|
|
def _enrich_client_params(self, params, **defaults):
|
|
params = params.copy()
|
|
for key, value in defaults.items():
|
|
params.setdefault(key, value)
|
|
params.setdefault('bootstrap_servers', self.bootstrap_server())
|
|
if self.sasl_enabled:
|
|
params.setdefault('sasl_mechanism', self.sasl_mechanism)
|
|
params.setdefault('security_protocol', self.transport)
|
|
if self.sasl_mechanism in ('PLAIN', 'SCRAM-SHA-256', 'SCRAM-SHA-512'):
|
|
params.setdefault('sasl_plain_username', self.broker_user)
|
|
params.setdefault('sasl_plain_password', self.broker_password)
|
|
return params
|
|
|
|
@staticmethod
|
|
def _create_many_clients(cnt, cls, *args, **params):
|
|
client_id = params['client_id']
|
|
for _ in range(cnt):
|
|
params['client_id'] = '%s_%s' % (client_id, random_string(4))
|
|
yield cls(*args, **params)
|
|
|
|
def get_clients(self, cnt=1, **params):
|
|
params = self._enrich_client_params(params, client_id='client')
|
|
for client in self._create_many_clients(cnt, KafkaClient, **params):
|
|
yield client
|
|
|
|
def get_admin_clients(self, cnt, **params):
|
|
params = self._enrich_client_params(params, client_id='admin_client')
|
|
for client in self._create_many_clients(cnt, KafkaAdminClient, **params):
|
|
yield client
|
|
|
|
def get_consumers(self, cnt, topics, **params):
|
|
params = self._enrich_client_params(
|
|
params, client_id='consumer', heartbeat_interval_ms=500, auto_offset_reset='earliest'
|
|
)
|
|
for client in self._create_many_clients(cnt, KafkaConsumer, *topics, **params):
|
|
yield client
|
|
|
|
def get_producers(self, cnt, **params):
|
|
params = self._enrich_client_params(params, client_id='producer')
|
|
for client in self._create_many_clients(cnt, KafkaProducer, **params):
|
|
yield client
|