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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import itertools
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import os
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from ducktape.services.background_thread import BackgroundThreadService
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from ducktape.cluster.remoteaccount import RemoteCommandError
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from kafkatest.directory_layout.kafka_path import KafkaPathResolverMixin
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from kafkatest.services.monitor.jmx import JmxMixin
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from kafkatest.version import DEV_BRANCH, LATEST_0_8_2, LATEST_0_9, LATEST_0_10_0, V_0_10_0_0, V_0_11_0_0
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"""
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0.8.2.1 ConsoleConsumer options
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The console consumer is a tool that reads data from Kafka and outputs it to standard output.
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Option Description
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------ -----------
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--blacklist <blacklist> Blacklist of topics to exclude from
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consumption.
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--consumer.config <config file> Consumer config properties file.
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--csv-reporter-enabled If set, the CSV metrics reporter will
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be enabled
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--delete-consumer-offsets If specified, the consumer path in
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zookeeper is deleted when starting up
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--formatter <class> The name of a class to use for
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formatting kafka messages for
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display. (default: kafka.tools.
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DefaultMessageFormatter)
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--from-beginning If the consumer does not already have
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an established offset to consume
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from, start with the earliest
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message present in the log rather
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than the latest message.
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--max-messages <Integer: num_messages> The maximum number of messages to
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consume before exiting. If not set,
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consumption is continual.
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--metrics-dir <metrics dictory> If csv-reporter-enable is set, and
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this parameter isset, the csv
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metrics will be outputed here
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--property <prop>
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--skip-message-on-error If there is an error when processing a
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message, skip it instead of halt.
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--topic <topic> The topic id to consume on.
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--whitelist <whitelist> Whitelist of topics to include for
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consumption.
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--zookeeper <urls> REQUIRED: The connection string for
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the zookeeper connection in the form
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host:port. Multiple URLS can be
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given to allow fail-over.
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"""
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class ConsoleConsumer(KafkaPathResolverMixin, JmxMixin, BackgroundThreadService):
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# Root directory for persistent output
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PERSISTENT_ROOT = "/mnt/console_consumer"
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STDOUT_CAPTURE = os.path.join(PERSISTENT_ROOT, "console_consumer.stdout")
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STDERR_CAPTURE = os.path.join(PERSISTENT_ROOT, "console_consumer.stderr")
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LOG_DIR = os.path.join(PERSISTENT_ROOT, "logs")
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LOG_FILE = os.path.join(LOG_DIR, "console_consumer.log")
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LOG4J_CONFIG = os.path.join(PERSISTENT_ROOT, "tools-log4j.properties")
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CONFIG_FILE = os.path.join(PERSISTENT_ROOT, "console_consumer.properties")
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JMX_TOOL_LOG = "/mnt/jmx_tool.log"
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JMX_TOOL_ERROR_LOG = "/mnt/jmx_tool.err.log"
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logs = {
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"consumer_stdout": {
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"path": STDOUT_CAPTURE,
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"collect_default": False},
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"consumer_stderr": {
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"path": STDERR_CAPTURE,
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"collect_default": False},
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"consumer_log": {
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"path": LOG_FILE,
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"collect_default": True},
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"jmx_log": {
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"path" : JMX_TOOL_LOG,
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"collect_default": False},
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"jmx_err_log": {
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"path": JMX_TOOL_ERROR_LOG,
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"collect_default": False}
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}
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def __init__(self, context, num_nodes, kafka, topic, group_id="test-consumer-group", new_consumer=True,
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message_validator=None, from_beginning=True, consumer_timeout_ms=None, version=DEV_BRANCH,
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client_id="console-consumer", print_key=False, jmx_object_names=None, jmx_attributes=None,
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enable_systest_events=False, stop_timeout_sec=15, print_timestamp=False,
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isolation_level="read_uncommitted"):
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"""
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Args:
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context: standard context
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num_nodes: number of nodes to use (this should be 1)
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kafka: kafka service
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topic: consume from this topic
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new_consumer: use new Kafka consumer if True
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message_validator: function which returns message or None
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from_beginning: consume from beginning if True, else from the end
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consumer_timeout_ms: corresponds to consumer.timeout.ms. consumer process ends if time between
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successively consumed messages exceeds this timeout. Setting this and
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waiting for the consumer to stop is a pretty good way to consume all messages
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in a topic.
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print_key if True, print each message's key as well
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enable_systest_events if True, console consumer will print additional lifecycle-related information
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only available in 0.10.0 and later.
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stop_timeout_sec After stopping a node, wait up to stop_timeout_sec for the node to stop,
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and the corresponding background thread to finish successfully.
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print_timestamp if True, print each message's timestamp as well
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isolation_level How to handle transactional messages.
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"""
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JmxMixin.__init__(self, num_nodes, jmx_object_names, jmx_attributes or [])
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BackgroundThreadService.__init__(self, context, num_nodes)
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self.kafka = kafka
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self.new_consumer = new_consumer
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self.group_id = group_id
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self.args = {
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'topic': topic,
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}
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self.consumer_timeout_ms = consumer_timeout_ms
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for node in self.nodes:
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node.version = version
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self.from_beginning = from_beginning
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self.message_validator = message_validator
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self.messages_consumed = {idx: [] for idx in range(1, num_nodes + 1)}
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self.clean_shutdown_nodes = set()
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self.client_id = client_id
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self.print_key = print_key
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self.log_level = "TRACE"
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self.stop_timeout_sec = stop_timeout_sec
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self.isolation_level = isolation_level
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self.enable_systest_events = enable_systest_events
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if self.enable_systest_events:
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# Only available in 0.10.0 and up
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assert version >= V_0_10_0_0
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self.print_timestamp = print_timestamp
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def prop_file(self, node):
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"""Return a string which can be used to create a configuration file appropriate for the given node."""
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# Process client configuration
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prop_file = self.render('console_consumer.properties')
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if hasattr(node, "version") and node.version <= LATEST_0_8_2:
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# in 0.8.2.X and earlier, console consumer does not have --timeout-ms option
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# instead, we have to pass it through the config file
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prop_file += "\nconsumer.timeout.ms=%s\n" % str(self.consumer_timeout_ms)
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# Add security properties to the config. If security protocol is not specified,
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# use the default in the template properties.
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self.security_config = self.kafka.security_config.client_config(prop_file, node)
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self.security_config.setup_node(node)
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prop_file += str(self.security_config)
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return prop_file
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def start_cmd(self, node):
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"""Return the start command appropriate for the given node."""
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args = self.args.copy()
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args['zk_connect'] = self.kafka.zk.connect_setting()
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args['stdout'] = ConsoleConsumer.STDOUT_CAPTURE
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args['stderr'] = ConsoleConsumer.STDERR_CAPTURE
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args['log_dir'] = ConsoleConsumer.LOG_DIR
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args['log4j_config'] = ConsoleConsumer.LOG4J_CONFIG
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args['config_file'] = ConsoleConsumer.CONFIG_FILE
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args['stdout'] = ConsoleConsumer.STDOUT_CAPTURE
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args['jmx_port'] = self.jmx_port
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args['console_consumer'] = self.path.script("kafka-console-consumer.sh", node)
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args['broker_list'] = self.kafka.bootstrap_servers(self.security_config.security_protocol)
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args['kafka_opts'] = self.security_config.kafka_opts
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cmd = "export JMX_PORT=%(jmx_port)s; " \
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"export LOG_DIR=%(log_dir)s; " \
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"export KAFKA_LOG4J_OPTS=\"-Dlog4j.configuration=file:%(log4j_config)s\"; " \
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"export KAFKA_OPTS=%(kafka_opts)s; " \
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"%(console_consumer)s " \
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"--topic %(topic)s --consumer.config %(config_file)s" % args
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if self.new_consumer:
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if node.version <= LATEST_0_10_0:
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cmd += " --new-consumer"
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cmd += " --bootstrap-server %(broker_list)s" % args
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if node.version >= V_0_11_0_0:
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cmd += " --isolation-level %s" % self.isolation_level
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else:
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cmd += " --zookeeper %(zk_connect)s" % args
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if self.from_beginning:
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cmd += " --from-beginning"
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if self.consumer_timeout_ms is not None:
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# version 0.8.X and below do not support --timeout-ms option
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# This will be added in the properties file instead
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if node.version > LATEST_0_8_2:
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cmd += " --timeout-ms %s" % self.consumer_timeout_ms
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if self.print_key:
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cmd += " --property print.key=true"
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if self.print_timestamp:
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cmd += " --property print.timestamp=true"
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# LoggingMessageFormatter was introduced after 0.9
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if node.version > LATEST_0_9:
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cmd += " --formatter kafka.tools.LoggingMessageFormatter"
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if self.enable_systest_events:
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# enable systest events is only available in 0.10.0 and later
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# check the assertion here as well, in case node.version has been modified
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assert node.version >= V_0_10_0_0
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cmd += " --enable-systest-events"
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cmd += " 2>> %(stderr)s | tee -a %(stdout)s &" % args
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return cmd
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def pids(self, node):
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try:
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cmd = "ps ax | grep -i console_consumer | grep java | grep -v grep | awk '{print $1}'"
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pid_arr = [pid for pid in node.account.ssh_capture(cmd, allow_fail=True, callback=int)]
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return pid_arr
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except (RemoteCommandError, ValueError) as e:
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return []
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def alive(self, node):
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return len(self.pids(node)) > 0
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def _worker(self, idx, node):
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node.account.ssh("mkdir -p %s" % ConsoleConsumer.PERSISTENT_ROOT, allow_fail=False)
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# Create and upload config file
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self.logger.info("console_consumer.properties:")
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prop_file = self.prop_file(node)
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self.logger.info(prop_file)
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node.account.create_file(ConsoleConsumer.CONFIG_FILE, prop_file)
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# Create and upload log properties
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log_config = self.render('tools_log4j.properties', log_file=ConsoleConsumer.LOG_FILE)
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node.account.create_file(ConsoleConsumer.LOG4J_CONFIG, log_config)
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# Run and capture output
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cmd = self.start_cmd(node)
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self.logger.debug("Console consumer %d command: %s", idx, cmd)
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consumer_output = node.account.ssh_capture(cmd, allow_fail=False)
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first_line = next(consumer_output, None)
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if first_line is not None:
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self.logger.debug("collecting following jmx objects: %s", self.jmx_object_names)
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self.init_jmx_attributes()
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self.start_jmx_tool(idx, node)
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for line in itertools.chain([first_line], consumer_output):
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msg = line.strip()
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if msg == "shutdown_complete":
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# Note that we can only rely on shutdown_complete message if running 0.10.0 or greater
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if node in self.clean_shutdown_nodes:
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raise Exception("Unexpected shutdown event from consumer, already shutdown. Consumer index: %d" % idx)
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self.clean_shutdown_nodes.add(node)
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else:
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if self.message_validator is not None:
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msg = self.message_validator(msg)
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if msg is not None:
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self.messages_consumed[idx].append(msg)
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self.read_jmx_output(idx, node)
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def start_node(self, node):
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BackgroundThreadService.start_node(self, node)
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def stop_node(self, node):
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node.account.kill_process("console_consumer", allow_fail=True)
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stopped = self.wait_node(node, timeout_sec=self.stop_timeout_sec)
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assert stopped, "Node %s: did not stop within the specified timeout of %s seconds" % \
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(str(node.account), str(self.stop_timeout_sec))
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def clean_node(self, node):
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if self.alive(node):
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self.logger.warn("%s %s was still alive at cleanup time. Killing forcefully..." %
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(self.__class__.__name__, node.account))
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JmxMixin.clean_node(self, node)
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node.account.kill_process("java", clean_shutdown=False, allow_fail=True)
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node.account.ssh("rm -rf %s" % ConsoleConsumer.PERSISTENT_ROOT, allow_fail=False)
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self.security_config.clean_node(node)
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def has_partitions_assigned(self, node):
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if self.new_consumer is False:
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return False
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idx = self.idx(node)
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self.init_jmx_attributes()
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self.start_jmx_tool(idx, node)
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self.read_jmx_output(idx, node)
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if not self.assigned_partitions_jmx_attr in self.maximum_jmx_value:
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return False
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self.logger.debug("Number of partitions assigned %f" % self.maximum_jmx_value[self.assigned_partitions_jmx_attr])
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return self.maximum_jmx_value[self.assigned_partitions_jmx_attr] > 0.0
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def init_jmx_attributes(self):
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if self.new_consumer is True:
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if self.jmx_object_names is None:
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self.jmx_object_names = []
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self.jmx_object_names += ["kafka.consumer:type=consumer-coordinator-metrics,client-id=%s" % self.client_id]
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self.jmx_attributes += ["assigned-partitions"]
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self.assigned_partitions_jmx_attr = "kafka.consumer:type=consumer-coordinator-metrics,client-id=%s:assigned-partitions" % self.client_id
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