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"""
Deploy and configure Kafka for Teuthology
"""
import contextlib
import logging
import time
import os
from teuthology import misc as teuthology
from teuthology import contextutil
from teuthology.orchestra import run
log = logging.getLogger(__name__)
def get_kafka_version(config):
for client, client_config in config.items():
if 'kafka_version' in client_config:
kafka_version = client_config.get('kafka_version')
return kafka_version
kafka_prefix = 'kafka_2.13-'
def get_kafka_dir(ctx, config):
kafka_version = get_kafka_version(config)
current_version = kafka_prefix + kafka_version
return '{tdir}/{ver}'.format(tdir=teuthology.get_testdir(ctx),ver=current_version)
@contextlib.contextmanager
def install_kafka(ctx, config):
"""
Downloading the kafka tar file.
"""
assert isinstance(config, dict)
log.info('Installing Kafka...')
# programmatically find a nearby mirror so as not to hammer archive.apache.org
apache_mirror_cmd="curl 'https://www.apache.org/dyn/closer.cgi' 2>/dev/null | " \
"grep -o '<strong>[^<]*</strong>' | sed 's/<[^>]*>//g' | head -n 1"
log.info("determining apache mirror by running: " + apache_mirror_cmd)
apache_mirror_url_front = os.popen(apache_mirror_cmd).read().rstrip() # note: includes trailing slash (/)
log.info("chosen apache mirror is " + apache_mirror_url_front)
for (client, _) in config.items():
(remote,) = ctx.cluster.only(client).remotes.keys()
test_dir=teuthology.get_testdir(ctx)
current_version = get_kafka_version(config)
kafka_file = kafka_prefix + current_version + '.tgz'
link1 = '{apache_mirror_url_front}/kafka/'.format(apache_mirror_url_front=apache_mirror_url_front) + \
current_version + '/' + kafka_file
ctx.cluster.only(client).run(
args=['cd', '{tdir}'.format(tdir=test_dir), run.Raw('&&'), 'wget', link1],
)
ctx.cluster.only(client).run(
args=['cd', '{tdir}'.format(tdir=test_dir), run.Raw('&&'), 'tar', '-xvzf', kafka_file],
)
try:
yield
finally:
log.info('Removing packaged dependencies of Kafka...')
test_dir=get_kafka_dir(ctx, config)
current_version = get_kafka_version(config)
for (client,_) in config.items():
ctx.cluster.only(client).run(
args=['rm', '-rf', '{tdir}/logs'.format(tdir=test_dir)],
)
ctx.cluster.only(client).run(
args=['rm', '-rf', test_dir],
)
ctx.cluster.only(client).run(
args=['rm', '-rf', '{tdir}/{doc}'.format(tdir=teuthology.get_testdir(ctx),doc=kafka_file)],
)
@contextlib.contextmanager
def run_kafka(ctx,config):
"""
This includes two parts:
1. Starting Zookeeper service
2. Starting Kafka service
"""
assert isinstance(config, dict)
log.info('Bringing up Zookeeper and Kafka services...')
for (client,_) in config.items():
(remote,) = ctx.cluster.only(client).remotes.keys()
ctx.cluster.only(client).run(
args=['cd', '{tdir}/bin'.format(tdir=get_kafka_dir(ctx, config)), run.Raw('&&'),
'./zookeeper-server-start.sh',
'{tir}/config/zookeeper.properties'.format(tir=get_kafka_dir(ctx, config)),
run.Raw('&'), 'exit'
],
)
ctx.cluster.only(client).run(
args=['cd', '{tdir}/bin'.format(tdir=get_kafka_dir(ctx, config)), run.Raw('&&'),
'./kafka-server-start.sh',
'{tir}/config/server.properties'.format(tir=get_kafka_dir(ctx, config)),
run.Raw('&'), 'exit'
],
)
try:
yield
finally:
log.info('Stopping Zookeeper and Kafka Services...')
for (client, _) in config.items():
(remote,) = ctx.cluster.only(client).remotes.keys()
ctx.cluster.only(client).run(
args=['cd', '{tdir}/bin'.format(tdir=get_kafka_dir(ctx, config)), run.Raw('&&'),
'./kafka-server-stop.sh',
'{tir}/config/kafka.properties'.format(tir=get_kafka_dir(ctx, config)),
],
)
time.sleep(5)
ctx.cluster.only(client).run(
args=['cd', '{tdir}/bin'.format(tdir=get_kafka_dir(ctx, config)), run.Raw('&&'),
'./zookeeper-server-stop.sh',
'{tir}/config/zookeeper.properties'.format(tir=get_kafka_dir(ctx, config)),
],
)
time.sleep(5)
ctx.cluster.only(client).run(args=['killall', '-9', 'java'])
@contextlib.contextmanager
def run_admin_cmds(ctx,config):
"""
Running Kafka Admin commands in order to check the working of producer anf consumer and creation of topic.
"""
assert isinstance(config, dict)
log.info('Checking kafka server through producer/consumer commands...')
for (client,_) in config.items():
(remote,) = ctx.cluster.only(client).remotes.keys()
ctx.cluster.only(client).run(
args=[
'cd', '{tdir}/bin'.format(tdir=get_kafka_dir(ctx, config)), run.Raw('&&'),
'./kafka-topics.sh', '--create', '--topic', 'quickstart-events',
'--bootstrap-server', 'localhost:9092'
],
)
ctx.cluster.only(client).run(
args=[
'cd', '{tdir}/bin'.format(tdir=get_kafka_dir(ctx, config)), run.Raw('&&'),
'echo', "First", run.Raw('|'),
'./kafka-console-producer.sh', '--topic', 'quickstart-events',
'--bootstrap-server', 'localhost:9092'
],
)
ctx.cluster.only(client).run(
args=[
'cd', '{tdir}/bin'.format(tdir=get_kafka_dir(ctx, config)), run.Raw('&&'),
'./kafka-console-consumer.sh', '--topic', 'quickstart-events',
'--from-beginning',
'--bootstrap-server', 'localhost:9092',
run.Raw('&'), 'exit'
],
)
try:
yield
finally:
pass
@contextlib.contextmanager
def task(ctx,config):
"""
Following is the way how to run kafka::
tasks:
- kafka:
client.0:
kafka_version: 2.6.0
"""
assert config is None or isinstance(config, list) \
or isinstance(config, dict), \
"task kafka only supports a list or dictionary for configuration"
all_clients = ['client.{id}'.format(id=id_)
for id_ in teuthology.all_roles_of_type(ctx.cluster, 'client')]
if config is None:
config = all_clients
if isinstance(config, list):
config = dict.fromkeys(config)
log.debug('Kafka config is %s', config)
with contextutil.nested(
lambda: install_kafka(ctx=ctx, config=config),
lambda: run_kafka(ctx=ctx, config=config),
lambda: run_admin_cmds(ctx=ctx, config=config),
):
yield
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