Apache Kafka aligned with Confluent Platform 5.5.0

.gitignore

+*.rpm
+*.rpm.dependencies
+*.rpm.sha256sum
+pip-20.2.2-py2.py3-none-any.whl
+Python-3.6.12.tgz
+archive.key

Dockerfile

+#
+# Copyright 2020 Confluent Inc.
+#
+# 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.
+
+ARG BASE_REGISTRY=registry1.dsop.io
+ARG BASE_IMAGE=redhat/ubi/ubi8
+ARG BASE_TAG=8.2
+
+
+
+FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
+
+# This affects how strings in Java class files are interpreted.  We want UTF-8 and this is the only locale in the
+# base image that supports it
+ENV LANG="C.UTF-8"
+
+USER root
+
+########################################
+## Install Python
+## Copied from: https://repo1.dsop.io/dsop/opensource/python/python36/-/blob/development/Dockerfile
+
+COPY Python-3.6.12.tgz pip-20.2.2-py2.py3-none-any.whl /opt/
+
+ENV PATH=/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/Python-3.6.12
+
+RUN dnf upgrade -y && \
+    dnf install -y make gcc openssl-devel bzip2-devel libffi-devel && \
+    cd /opt && \
+    tar -xzvf Python-3.6.12.tgz && \
+    rm -f Python-3.6.12.tgz && \
+    cd Python-3.6.12 && \
+    ./configure --enable-optimizations && \
+    make altinstall && \
+    python -m pip install --no-index --upgrade /opt/pip-20.2.2-py2.py3-none-any.whl && \
+    ln -s /opt/Python-3.6.12/python /usr/bin/python3 && \
+    rm -f pip-20.2.2-py2.py3-none-any.whl && \
+    dnf -y remove gcc make openssl-devel bzip2-devel libffi-devel && \
+    find /opt/Python-3.6.12 -name "*.pem" -o -name "*.key" | xargs rm -f && \
+    find /usr/local/lib/python3.6/test -name "*.pem" -o -name "*.key" | xargs rm -f && \
+    dnf clean all && \
+    rm -rf /var/cache/dnf
+
+## Python Installed
+########################################
+
+########################################
+## Install Java
+## Copied from: https://repo1.dsop.io/dsop/redhat/openjdk/openjdk8/-/blob/master/Dockerfile
+
+RUN dnf update -y && \
+    dnf install -y java-1.8.0-openjdk-headless && \
+    dnf clean all && \
+    rm -rf /var/cache/dnf
+
+## Java Installed
+########################################
+
+
+RUN mkdir -p /etc/confluent/docker /usr/logs \
+    && useradd --no-log-init --create-home --shell /bin/bash appuser \
+    && chown appuser:appuser -R /etc/confluent/ /usr/logs
+
+ADD --chown=appuser:appuser target/cp-base-new-5.5.0-package/share/doc/* /usr/share/doc/cp-base-new/
+ADD --chown=appuser:appuser target/cp-base-new-5.5.0-package/share/java/cp-base-new/* /usr/share/java/cp-base-new/
+
+COPY --chown=appuser:appuser include/etc/confluent/docker /etc/confluent/docker
+
+RUN mkdir /licenses
+COPY license.txt /licenses
+
+
+############ ^^^^^ Base Container Details ^^^^^ ############
+############################################################
+############ vvvvv  This Container Below  vvvvv ############
+
+ARG PROJECT_VERSION=5.5.0
+ARG ARTIFACT_ID=cp-kafka
+
+LABEL maintainer="confluentfed@confluent.io"
+LABEL vendor="Confluent"
+LABEL version=$PROJECT_VERSION
+LABEL release=$PROJECT_VERSION
+LABEL name=$ARTIFACT_ID
+LABEL summary="Confluent platform Kafka."
+LABEL io.confluent.docker=true
+ARG BUILD_NUMBER=-1
+LABEL io.confluent.docker.build.number=$BUILD_NUMBER
+LABEL io.confluent.docker.git.repo="confluentinc/kafka-images"
+
+ARG CONFLUENT_VERSION=5.5.0-1
+ARG CONFLUENT_PACKAGES_REPO
+ARG CONFLUENT_PLATFORM_LABEL
+ARG SCALA_VERSION=2.12
+
+# allow arg override of required env params
+ARG KAFKA_ZOOKEEPER_CONNECT
+ENV KAFKA_ZOOKEEPER_CONNECT=${KAFKA_ZOOKEEPER_CONNECT}
+ARG KAFKA_ADVERTISED_LISTENERS
+ENV KAFKA_ADVERTISED_LISTENERS=${KAFKA_ADVERTISED_LISTENERS}
+
+ENV COMPONENT=kafka
+
+# Copy in the RPMs we want to install
+COPY ./confluent-kafka-${SCALA_VERSION}-${CONFLUENT_VERSION}.rpm /tmp/confluent-kafka-${SCALA_VERSION}-${CONFLUENT_VERSION}.rpm
+
+USER root
+
+RUN echo "===> Installing ${COMPONENT}..." \
+    && dnf install --nogpgcheck -y /tmp/confluent-kafka-${SCALA_VERSION}-${CONFLUENT_VERSION}.rpm \
+    && echo "===> clean up ..."  \
+    && dnf clean all \
+    && rm -rf /tmp/* \
+    && echo "===> Setting up ${COMPONENT} dirs" \
+    && mkdir -p /var/lib/${COMPONENT}/data /etc/${COMPONENT}/secrets \
+    && chown appuser:appuser -R /var/lib/${COMPONENT} /etc/${COMPONENT} \
+    && chmod -R ag+w /etc/kafka /var/lib/${COMPONENT}/data /etc/${COMPONENT}/secrets
+
+VOLUME ["/var/lib/${COMPONENT}/data", "/etc/${COMPONENT}/secrets"]
+
+COPY --chown=appuser:appuser include/etc/confluent/docker /etc/confluent/docker
+
+# primary
+EXPOSE 9092
+
+USER appuser
+
+CMD ["/etc/confluent/docker/run"]
+
+# Polling period  : 5 seconds
+# Timeout period  :10 seconds (if the polling does not return within this time, treat as a failed poll)
+# Start-up period : 2 minutes (during which failures are not counted as failures)
+# Retry period    : 8 minutes (after which container is deemed unhealthy)
+# All settings can be overriden at run-time in Docker/Docker Compose. 
+HEALTHCHECK --start-period=120s --interval=5s --timeout=10s --retries=96 \ 
+    CMD /usr/bin/kafka-topics --version
\ No newline at end of file

Jenkinsfile

+@Library('DCCSCR@master') _
+dccscrPipeline( version: "5.5.0" )
+

LICENSE

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+

README.md

 # cp-kafka
 
+This container serves as the Apache Kafka container and depends on the cp-base-new container.
+
+Zookeeper is a required component of the Apache Kafka ecosystem, and must be network accessible from the Apache Kafka containers.
+
+
+
+
+
+Architecture: https://www.confluent.io/resources/apache-kafka-confluent-enterprise-reference-architecture/
+
+For questions on this container please contact: confluentfed@confluent.io
+
+Github: https://github.com/confluentinc/kafka-images/tree/5.5.x
\ No newline at end of file

download.yaml

+resources:
+  - url: "https://www.python.org/ftp/python/3.6.12/Python-3.6.12.tgz"
+    filename: "Python-3.6.12.tgz"
+    validation:
+      type: "sha256"
+      value: "12dddbe52385a0f702fb8071e12dcc6b3cb2dde07cd8db3ed60e90d90ab78693"
+  - url: "https://files.pythonhosted.org/packages/5a/4a/39400ff9b36e719bdf8f31c99fe1fa7842a42fa77432e584f707a5080063/pip-20.2.2-py2.py3-none-any.whl"
+    filename: "pip-20.2.2-py2.py3-none-any.whl"
+    validation:
+      type: "sha256"
+      value: "5244e51494f5d1dfbb89da492d4250cb07f9246644736d10ed6c45deb1a48500"
+  - url: "https://packages.confluent.io/rpm/5.5/confluent-kafka-2.11-5.5.0-1.noarch.rpm"
+    filename: "confluent-kafka-2.11-5.5.0-1.noarch.rpm"
+    validation:
+      type: "sha256"
+      value: "8184e548185a9633c29a7b30da2b1fe24ffa78351746221ae8c72315e770e98c"
+  - url: "https://packages.confluent.io/rpm/5.5/confluent-kafka-2.12-5.5.0-1.noarch.rpm"
+    filename: "confluent-kafka-2.12-5.5.0-1.noarch.rpm"
+    validation:
+      type: "sha256"
+      value: "1a2f04ee8c34feab45cd8212ba55415048ed0b83e0a977c8efcde14993000bf8"

include/etc/confluent/docker/configure

+#!/usr/bin/env bash
+#
+# Copyright 2016 Confluent Inc.
+#
+# 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.
+
+. /etc/confluent/docker/bash-config
+
+dub ensure KAFKA_ZOOKEEPER_CONNECT
+dub ensure KAFKA_ADVERTISED_LISTENERS
+
+# By default, LISTENERS is derived from ADVERTISED_LISTENERS by replacing
+# hosts with 0.0.0.0. This is good default as it ensures that the broker
+# process listens on all ports.
+if [[ -z "${KAFKA_LISTENERS-}" ]]
+then
+  export KAFKA_LISTENERS
+  KAFKA_LISTENERS=$(cub listeners "$KAFKA_ADVERTISED_LISTENERS")
+fi
+
+dub path /etc/kafka/ writable
+
+if [[ -z "${KAFKA_LOG_DIRS-}" ]]
+then
+  export KAFKA_LOG_DIRS
+  KAFKA_LOG_DIRS="/var/lib/kafka/data"
+fi
+
+# advertised.host, advertised.port, host and port are deprecated. Exit if these properties are set.
+if [[ -n "${KAFKA_ADVERTISED_PORT-}" ]]
+then
+  echo "advertised.port is deprecated. Please use KAFKA_ADVERTISED_LISTENERS instead."
+  exit 1
+fi
+
+if [[ -n "${KAFKA_ADVERTISED_HOST-}" ]]
+then
+  echo "advertised.host is deprecated. Please use KAFKA_ADVERTISED_LISTENERS instead."
+  exit 1
+fi
+
+if [[ -n "${KAFKA_HOST-}" ]]
+then
+  echo "host is deprecated. Please use KAFKA_ADVERTISED_LISTENERS instead."
+  exit 1
+fi
+
+if [[ -n "${KAFKA_PORT-}" ]]
+then
+  echo "port is deprecated. Please use KAFKA_ADVERTISED_LISTENERS instead."
+  exit 1
+fi
+
+# Set if ADVERTISED_LISTENERS has SSL:// or SASL_SSL:// endpoints.
+if [[ $KAFKA_ADVERTISED_LISTENERS == *"SSL://"* ]]
+then
+  echo "SSL is enabled."
+
+  dub ensure KAFKA_SSL_KEYSTORE_FILENAME
+  export KAFKA_SSL_KEYSTORE_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_KEYSTORE_FILENAME"
+  dub path "$KAFKA_SSL_KEYSTORE_LOCATION" exists
+
+  dub ensure KAFKA_SSL_KEY_CREDENTIALS
+  KAFKA_SSL_KEY_CREDENTIALS_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_KEY_CREDENTIALS"
+  dub path "$KAFKA_SSL_KEY_CREDENTIALS_LOCATION" exists
+  export KAFKA_SSL_KEY_PASSWORD
+  KAFKA_SSL_KEY_PASSWORD=$(cat "$KAFKA_SSL_KEY_CREDENTIALS_LOCATION")
+
+  dub ensure KAFKA_SSL_KEYSTORE_CREDENTIALS
+  KAFKA_SSL_KEYSTORE_CREDENTIALS_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_KEYSTORE_CREDENTIALS"
+  dub path "$KAFKA_SSL_KEYSTORE_CREDENTIALS_LOCATION" exists
+  export KAFKA_SSL_KEYSTORE_PASSWORD
+  KAFKA_SSL_KEYSTORE_PASSWORD=$(cat "$KAFKA_SSL_KEYSTORE_CREDENTIALS_LOCATION")
+
+  if [[ -n "${KAFKA_SSL_CLIENT_AUTH-}" ]] && ( [[ $KAFKA_SSL_CLIENT_AUTH == *"required"* ]] || [[ $KAFKA_SSL_CLIENT_AUTH == *"requested"* ]] )
+  then
+      dub ensure KAFKA_SSL_TRUSTSTORE_FILENAME
+      export KAFKA_SSL_TRUSTSTORE_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_TRUSTSTORE_FILENAME"
+      dub path "$KAFKA_SSL_TRUSTSTORE_LOCATION" exists
+
+      dub ensure KAFKA_SSL_TRUSTSTORE_CREDENTIALS
+      KAFKA_SSL_TRUSTSTORE_CREDENTIALS_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_TRUSTSTORE_CREDENTIALS"
+      dub path "$KAFKA_SSL_TRUSTSTORE_CREDENTIALS_LOCATION" exists
+      export KAFKA_SSL_TRUSTSTORE_PASSWORD
+      KAFKA_SSL_TRUSTSTORE_PASSWORD=$(cat "$KAFKA_SSL_TRUSTSTORE_CREDENTIALS_LOCATION")
+  fi
+  
+fi
+
+# Set if KAFKA_ADVERTISED_LISTENERS has SASL_PLAINTEXT:// or SASL_SSL:// endpoints.
+if [[ $KAFKA_ADVERTISED_LISTENERS =~ .*SASL_.*://.* ]]
+then
+  echo "SASL" is enabled.
+
+  dub ensure KAFKA_OPTS
+
+  if [[ ! $KAFKA_OPTS == *"java.security.auth.login.config"*  ]]
+  then
+    echo "KAFKA_OPTS should contain 'java.security.auth.login.config' property."
+  fi
+fi
+
+if [[ -n "${KAFKA_JMX_OPTS-}" ]]
+then
+  if [[ ! $KAFKA_JMX_OPTS == *"com.sun.management.jmxremote.rmi.port"*  ]]
+  then
+    echo "KAFKA_OPTS should contain 'com.sun.management.jmxremote.rmi.port' property. It is required for accessing the JMX metrics externally."
+  fi
+fi
+
+dub template "/etc/confluent/docker/${COMPONENT}.properties.template" "/etc/${COMPONENT}/${COMPONENT}.properties"
+dub template "/etc/confluent/docker/log4j.properties.template" "/etc/${COMPONENT}/log4j.properties"
+dub template "/etc/confluent/docker/tools-log4j.properties.template" "/etc/${COMPONENT}/tools-log4j.properties"

include/etc/confluent/docker/ensure

+#!/usr/bin/env bash
+#
+# Copyright 2020 Confluent Inc.
+#
+# 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.
+
+. /etc/confluent/docker/bash-config
+
+export KAFKA_DATA_DIRS=${KAFKA_DATA_DIRS:-"/var/lib/kafka/data"}
+echo "===> Check if $KAFKA_DATA_DIRS is writable ..."
+dub path "$KAFKA_DATA_DIRS" writable
+
+if [[ -n "${KAFKA_ZOOKEEPER_SSL_CLIENT_ENABLE-}" ]] && [[ $KAFKA_ZOOKEEPER_SSL_CLIENT_ENABLE == "true" ]]
+then
+    echo "===> Skipping Zookeeper health check for SSL connections..."
+else
+    echo "===> Check if Zookeeper is healthy ..."
+    cub zk-ready "$KAFKA_ZOOKEEPER_CONNECT" "${KAFKA_CUB_ZK_TIMEOUT:-40}"
+fi

include/etc/confluent/docker/kafka.properties.template

+{% set excluded_props = ['KAFKA_VERSION',
+                         'KAFKA_HEAP_OPTS'
+                         'KAFKA_LOG4J_OPTS',
+                         'KAFKA_OPTS',
+                         'KAFKA_JMX_OPTS',
+                         'KAFKA_JVM_PERFORMANCE_OPTS',
+                         'KAFKA_GC_LOG_OPTS',
+                         'KAFKA_LOG4J_ROOT_LOGLEVEL',
+                         'KAFKA_LOG4J_LOGGERS',
+                         'KAFKA_TOOLS_LOG4J_LOGLEVEL',
+                         'KAFKA_ZOOKEEPER_CLIENT_CNXN_SOCKET']
+-%}
+
+{# properties that don't fit the standard format #}
+{% set other_props = {
+  'KAFKA_ZOOKEEPER_CLIENT_CNXN_SOCKET' : 'zookeeper.clientCnxnSocket'
+ } -%}
+
+{% set kafka_props = env_to_props('KAFKA_', '', exclude=excluded_props) -%}
+{% for name, value in kafka_props.items() -%}
+{{name}}={{value}}
+{% endfor -%}
+
+{% for k, property in other_props.items() -%}
+{% if env.get(k) != None -%}
+{{property}}={{env[k]}}
+{% endif -%}
+{% endfor -%}
+
+{% set confluent_support_props = env_to_props('CONFLUENT_SUPPORT_', 'confluent.support.') -%}
+{% for name, value in confluent_support_props.items() -%}
+{{name}}={{value}}
+{% endfor -%}

include/etc/confluent/docker/launch

+#!/usr/bin/env bash
+#
+# Copyright 2016 Confluent Inc.
+#
+# 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.
+
+# Override this section from the script to include the com.sun.management.jmxremote.rmi.port property.
+if [ -z "$KAFKA_JMX_OPTS" ]; then
+  export KAFKA_JMX_OPTS="-Dcom.sun.management.jmxremote=true -Dcom.sun.management.jmxremote.authenticate=false  -Dcom.sun.management.jmxremote.ssl=false "
+fi
+
+# The JMX client needs to be able to connect to java.rmi.server.hostname.
+# The default for bridged n/w is the bridged IP so you will only be able to connect from another docker container.
+# For host n/w, this is the IP that the hostname on the host resolves to.
+
+# If you have more that one n/w configured, hostname -i gives you all the IPs,
+# the default is to pick the first IP (or network).
+export KAFKA_JMX_HOSTNAME=${KAFKA_JMX_HOSTNAME:-$(hostname -i | cut -d" " -f1)}
+
+if [ "$KAFKA_JMX_PORT" ]; then
+  # This ensures that the "if" section for JMX_PORT in kafka launch script does not trigger.
+  export JMX_PORT=$KAFKA_JMX_PORT
+  export KAFKA_JMX_OPTS="$KAFKA_JMX_OPTS -Djava.rmi.server.hostname=$KAFKA_JMX_HOSTNAME -Dcom.sun.management.jmxremote.local.only=false -Dcom.sun.management.jmxremote.rmi.port=$JMX_PORT -Dcom.sun.management.jmxremote.port=$JMX_PORT"
+fi
+
+echo "===> Launching ${COMPONENT} ... "
+exec "${COMPONENT}"-server-start /etc/"${COMPONENT}"/"${COMPONENT}".properties

include/etc/confluent/docker/log4j.properties.template

+
+log4j.rootLogger={{ env["KAFKA_LOG4J_ROOT_LOGLEVEL"] | default('INFO') }}, stdout
+
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+{% set loggers = {
+  'kafka': 'INFO',
+  'kafka.network.RequestChannel$': 'WARN',
+  'kafka.producer.async.DefaultEventHandler': 'DEBUG',
+  'kafka.request.logger': 'WARN',
+  'kafka.controller': 'TRACE',
+  'kafka.log.LogCleaner': 'INFO',
+  'state.change.logger': 'TRACE',
+  'kafka.authorizer.logger': 'WARN'
+  } -%}
+
+
+{% if env['KAFKA_LOG4J_LOGGERS'] %}
+{% set loggers = parse_log4j_loggers(env['KAFKA_LOG4J_LOGGERS'], loggers) %}
+{% endif %}
+
+{% for logger,loglevel in loggers.items() %}
+log4j.logger.{{logger}}={{loglevel}}
+{% endfor %}

include/etc/confluent/docker/run

+#!/usr/bin/env bash
+#
+# Copyright 2016 Confluent Inc.
+#
+# 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.
+
+. /etc/confluent/docker/bash-config
+
+# Set environment values if they exist as arguments
+if [ $# -ne 0 ]; then
+  echo "===> Overriding env params with args ..."
+  for var in "$@"
+  do
+    export "$var"
+  done
+fi
+
+echo "===> ENV Variables ..."
+show_env
+
+echo "===> User"
+id
+
+echo "===> Configuring ..."
+/etc/confluent/docker/configure
+
+echo "===> Running preflight checks ... "
+/etc/confluent/docker/ensure
+
+echo "===> Launching ... "
+exec /etc/confluent/docker/launch

include/etc/confluent/docker/tools-log4j.properties.template

+
+log4j.rootLogger={{ env["KAFKA_TOOLS_LOG4J_LOGLEVEL"] | default('WARN') }}, stderr
+
+log4j.appender.stderr=org.apache.log4j.ConsoleAppender
+log4j.appender.stderr.layout=org.apache.log4j.PatternLayout
+log4j.appender.stderr.layout.ConversionPattern=[%d] %p %m (%c)%n
+log4j.appender.stderr.Target=System.err

license.txt

+Copyright 2020 Confluent, Inc.
\ No newline at end of file

target/checkstyle-checker.xml

+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+        "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
+        "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
+
+<!--
+ // Copyright 2015 Confluent Inc.
+ //
+ // 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.
+
+    Checkstyle configuration that checks the Google coding conventions from Google Java Style
+    that can be found at https://google.github.io/styleguide/javaguide.html. Based on google_checks.xml
+
+    NOTE: Plus some additional code-quality checks
+ -->
+
+<module name = "Checker">
+    <property name="localeLanguage" value="en"/>
+
+    <property name="fileExtensions" value="java, properties, xml"/>
+
+    <!-- Checks for whitespace                               -->
+    <!-- See http://checkstyle.sf.net/config_whitespace.html -->
+    <module name="FileTabCharacter">
+        <property name="eachLine" value="true"/>
+    </module>
+
+    <!-- header -->
+    <module name="RegexpHeader">
+        <property name="header" value="/\*\nCopyright .* Confluent Inc."/>
+    </module>
+
+    <module name="SuppressWarningsFilter" />
+
+    <module name="TreeWalker">
+        <!-- Generic 'turn all checkstyle off' comment filter -->
+        <module name="SuppressionCommentFilter">
+            <property name="offCommentFormat" value="CHECKSTYLE:OFF"/>
+            <property name="onCommentFormat" value="CHECKSTYLE:ON"/>
+        </module>
+
+        <!-- Specific 'turn list of checkstyle rules off' comment filter -->
+        <module name="SuppressionCommentFilter">
+            <property name="offCommentFormat" value="CHECKSTYLE_RULES.OFF:\s+([\w\|]+)"/>
+            <property name="onCommentFormat" value="CHECKSTYLE_RULES.ON:\s+([\w\|]+)"/>
+            <property name="checkFormat" value="$1"/>
+        </module>
+
+        <module name="SuppressWarningsHolder" />
+
+        <module name="OuterTypeFilename"/>
+        <module name="IllegalTokenText">
+            <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
+            <property name="format" value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
+            <property name="message" value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>
+        </module>
+        <module name="AvoidEscapedUnicodeCharacters">
+            <property name="allowEscapesForControlCharacters" value="true"/>
+            <property name="allowByTailComment" value="true"/>
+            <property name="allowNonPrintableEscapes" value="true"/>
+        </module>
+        <module name="LineLength">
+            <property name="max" value="100"/>
+            <property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
+        </module>
+        <module name="AvoidStarImport"/>
+        <module name="UnusedImports"/>
+        <module name="OneTopLevelClass"/>
+        <module name="NoLineWrap"/>
+        <module name="EmptyBlock">
+            <property name="option" value="TEXT"/>
+            <property name="tokens" value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
+        </module>
+        <module name="NeedBraces"/>
+        <module name="LeftCurly"/>
+        <module name="RightCurly">
+            <property name="id" value="RightCurlySame"/>
+            <property name="tokens" value="LITERAL_TRY, LITERAL_CATCH, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE"/>
+        </module>
+        <module name="RightCurly">
+            <property name="id" value="RightCurlyAlone"/>
+            <property name="option" value="alone"/>
+            <property name="tokens" value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, STATIC_INIT, INSTANCE_INIT"/>
+        </module>
+        <module name="WhitespaceAround">
+            <property name="allowEmptyConstructors" value="true"/>
+            <property name="allowEmptyMethods" value="true"/>
+            <property name="allowEmptyTypes" value="true"/>
+            <property name="allowEmptyLoops" value="true"/>
+            <message key="ws.notFollowed"
+                     value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks may only be represented as '{}' when not part of a multi-block statement (4.1.3)"/>
+            <message key="ws.notPreceded"
+                     value="WhitespaceAround: ''{0}'' is not preceded with whitespace."/>
+        </module>
+        <module name="OneStatementPerLine"/>
+        <module name="MultipleVariableDeclarations"/>
+        <module name="ArrayTypeStyle"/>
+        <module name="MissingSwitchDefault"/>
+        <module name="FallThrough"/>
+        <module name="UpperEll"/>
+        <module name="ModifierOrder"/>
+        <module name="EmptyLineSeparator">
+            <property name="allowNoEmptyLineBetweenFields" value="true"/>
+        </module>
+        <module name="SeparatorWrap">
+            <property name="id" value="SeparatorWrapDot"/>
+            <property name="tokens" value="DOT"/>
+            <property name="option" value="nl"/>
+        </module>
+        <module name="SeparatorWrap">
+            <property name="id" value="SeparatorWrapComma"/>
+            <property name="tokens" value="COMMA"/>
+            <property name="option" value="EOL"/>
+        </module>
+        <module name="PackageName">
+            <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>
+            <message key="name.invalidPattern"
+                     value="Package name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="TypeName">
+            <message key="name.invalidPattern"
+                     value="Type name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="MemberName">
+            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
+            <message key="name.invalidPattern"
+                     value="Member name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="ParameterName">
+            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+            <message key="name.invalidPattern"
+                     value="Parameter name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="CatchParameterName">
+            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+            <message key="name.invalidPattern"
+                     value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="LocalVariableName">
+            <property name="tokens" value="VARIABLE_DEF"/>
+            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+            <message key="name.invalidPattern"
+                     value="Local variable name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="ClassTypeParameterName">
+            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+            <message key="name.invalidPattern"
+                     value="Class type name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="MethodTypeParameterName">
+            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+            <message key="name.invalidPattern"
+                     value="Method type name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="InterfaceTypeParameterName">
+            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+            <message key="name.invalidPattern"
+                     value="Interface type name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="NoFinalizer"/>
+        <module name="GenericWhitespace">
+            <message key="ws.followed"
+                     value="GenericWhitespace ''{0}'' is followed by whitespace."/>
+            <message key="ws.preceded"
+                     value="GenericWhitespace ''{0}'' is preceded with whitespace."/>
+            <message key="ws.illegalFollow"
+                     value="GenericWhitespace ''{0}'' should followed by whitespace."/>
+            <message key="ws.notPreceded"
+                     value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>
+        </module>
+        <module name="Indentation">
+            <property name="basicOffset" value="2"/>
+            <property name="braceAdjustment" value="0"/>
+            <property name="caseIndent" value="2"/>
+            <property name="throwsIndent" value="4"/>
+            <property name="lineWrappingIndentation" value="4"/>
+            <property name="arrayInitIndent" value="2"/>
+        </module>
+        <module name="AbbreviationAsWordInName">
+            <property name="ignoreFinal" value="false"/>
+            <property name="allowedAbbreviationLength" value="2"/>
+        </module>
+        <module name="OverloadMethodsDeclarationOrder"/>
+        <module name="VariableDeclarationUsageDistance"/>
+        <module name="CustomImportOrder">
+            <property name="sortImportsInGroupAlphabetically" value="true"/>
+            <property name="separateLineBetweenGroups" value="true"/>
+            <property name="specialImportsRegExp"
+                      value="${checkstyle.customimportorder.specialimportsregexp}"
+                      default=""/>
+            <property name="customImportOrderRules"
+                      value="${checkstyle.customimportorder.customimportorderrules}"
+                      default="STATIC###THIRD_PARTY_PACKAGE"/>
+            <property name="severity"
+                      value="${checkstyle.customimportorder.severity}"
+                      default="ignore"/>
+        </module>
+        <module name="MethodParamPad"/>
+        <module name="ParenPad"/>
+        <module name="OperatorWrap">
+            <property name="option" value="NL"/>
+            <property name="tokens" value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR, LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR"/>
+        </module>
+        <module name="AnnotationLocation">
+            <property name="id" value="AnnotationLocationMostCases"/>
+            <property name="tokens" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF"/>
+        </module>
+        <module name="AnnotationLocation">
+            <property name="id" value="AnnotationLocationVariables"/>
+            <property name="tokens" value="VARIABLE_DEF"/>
+            <property name="allowSamelineMultipleAnnotations" value="true"/>
+        </module>
+        <module name="NonEmptyAtclauseDescription"/>
+        <module name="JavadocTagContinuationIndentation"/>
+        <module name="JavadocParagraph"/>
+        <module name="AtclauseOrder">
+            <property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
+            <property name="target" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
+        </module>
+        <module name="MethodName">
+            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$"/>
+            <message key="name.invalidPattern"
+                     value="Method name ''{0}'' must match pattern ''{1}''."/>
+        </module>
+        <module name="SingleLineJavadoc">
+            <property name="ignoreInlineTags" value="false"/>
+        </module>
+        <module name="EmptyCatchBlock">
+            <property name="exceptionVariableName" value="expected"/>
+        </module>
+        <module name="CommentsIndentation"/>
+
+        <!-- code quality -->
+        <module name="MethodLength"/>
+        <module name="ParameterNumber">
+            <property name="max" value="10"/>
+        </module>
+        <module name="ClassDataAbstractionCoupling">
+            <property name="excludeClassesRegexps"
+                      value="${checkstyle.classdataabstractioncoupling.excludeclassesregexps}"
+                      default="^.*Exception$"/>
+        </module>
+        <module name="BooleanExpressionComplexity"/>
+        <module name="CyclomaticComplexity"/>
+        <module name="JavaNCSS" />
+        <module name="NPathComplexity"/>
+
+        <module name="FinalParameters">
+            <property name="severity"
+                      value="${checkstyle.finalparameters.severity}"
+                      default="ignore"/>
+        </module>
+
+        <module name="FinalLocalVariable">
+            <property name="severity"
+                      value="${checkstyle.finallocalvariable.severity}"
+                      default="ignore"/>
+        </module>
+
+        <module name="FinalClass">
+            <property name="severity"
+                      value="${checkstyle.finalclass.severity}"
+                      default="ignore"/>
+        </module>
+
+        <module name="TodoComment">
+            <property name="format"
+                      value="${checkstyle.todocomment.format}"
+                      default="(TODO)|(FIXME)"/>
+            <property name="severity"
+                      value="${checkstyle.todocomment.severity}"
+                      default="ignore"/>
+        </module>
+
+        <module name="HideUtilityClassConstructor">
+            <property name="severity"
+                      value="${checkstyle.hideutilityclassconstructor.severity}"
+                      default="ignore"/>
+        </module>
+
+        <module name="RedundantModifier">
+            <property name="severity"
+                      value="${checkstyle.redundantmodifier.severity}"
+                      default="ignore"/>
+        </module>
+
+        <module name="RedundantImport">
+            <property name="severity"
+                      value="${checkstyle.redundantimport.severity}"
+                      default="error"/>
+        </module>
+    </module>
+</module>

target/checkstyle-result.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<checkstyle version="8.18">
+</checkstyle>

target/checkstyle-suppressions.xml

+<?xml version="1.0"?>
+
+<!DOCTYPE suppressions PUBLIC
+        "-//Puppy Crawl//DTD Suppressions 1.1//EN"
+        "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+
+<suppressions>
+
+    <!-- these are c/p from ak :( -->
+    <!-- TODO: reuse these from AK -->
+    <suppress
+            checks="."
+            files="(Configurable|CopyOnWriteMap|MockTime|SystemTime|Time|Utils|ZkUtils).java"
+    />
+
+    <!-- these are c/p from ak :( -->
+    <!-- TODO: reuse these from AK -->
+    <suppress
+            checks="."
+            files="io[\\/]confluent[\\/]common[\\/](metrics|config)[\\/].*"
+    />
+
+</suppressions>

target/cp-base-new-5.5.0-package/share/doc/cp-base-new/licenses.html

+<HTML><HEAD><style>
+table {
+    border-collapse: collapse;
+    width: 100%;
+    font-family: sans-serif;
+}
+h1 {
+    font-family: sans-serif;
+}
+
+th, td {
+    text-align: left;
+    padding: 8px;
+}
+thead td {
+    background-color: #333;
+    color: #fff;
+    font-weight: bold;
+}
+
+tr:nth-child(even){background-color: #f2f2f2}
+
+th {
+    background-color: #000000;
+    color: white;
+}
+</style></HEAD><BODY>
+<H1>License Report</H1><br>
+<TABLE border="1">
+<THEAD>
+<TR>
+<TD>Artifact</TD><TD>Type</TD><TD>Version</TD><TD>License(s)</TD></TR>
+</THEAD>
+<TBODY>
+<TR>
+<TD><A HREF="http://github.com/FasterXML/jackson">jackson-annotations-2.10.2</A></TD><TD>jar</TD><TD>2.10.2</TD><TD><A HREF="http://www.apache.org/licenses/LICENSE-2.0.txt">Apache 2.0</A><br></TD></TR>
+<TR>
+<TD><A HREF="https://github.com/FasterXML/jackson-core">jackson-core-2.10.2</A></TD><TD>jar</TD><TD>2.10.2</TD><TD><A HREF="http://www.apache.org/licenses/LICENSE-2.0.txt">Apache 2.0</A><br></TD></TR>
+<TR>
+<TD><A HREF="http://github.com/FasterXML/jackson">jackson-databind-2.10.2</A></TD><TD>jar</TD><TD>2.10.2</TD><TD><A HREF="http://www.apache.org/licenses/LICENSE-2.0.txt">Apache 2.0</A><br></TD></TR>
+<TR>
+<TD><A HREF="https://github.com/FasterXML/jackson-dataformats-text">jackson-dataformat-csv-2.10.2</A></TD><TD>jar</TD><TD>2.10.2</TD><TD><A HREF="http://www.apache.org/licenses/LICENSE-2.0.txt">Apache 2.0</A><br></TD></TR>
+<TR>
+<TD><A HREF="https://github.com/FasterXML/jackson-dataformats-text">jackson-dataformat-yaml-2.10.2</A></TD><TD>jar</TD><TD>2.10.2</TD><TD><A HREF="http://www.apache.org/licenses/LICENSE-2.0.txt">Apache 2.0</A><br></TD></TR>
+<TR>
+<TD>jackson-datatype-jdk8-2.10.2</TD><TD>jar</TD><TD>2.10.2</TD><TD><A HREF="http://www.apache.org/licenses/LICENSE-2.0.txt">Apache 2.0</A><br></TD></TR>
+<TR>
+<TD><A HREF="https://github.com/FasterXML/jackson-modules-base">jackson-module-paranamer-2.10.2</A></TD><TD>jar</TD><TD>2.10.2</TD><TD><A HREF="http://www.apache.org/licenses/LICENSE-2.0.txt">Apache 2.0</A><br></TD></TR>
+<TR>
+<TD>gson-2.8.5</TD><TD>jar</TD><TD>2.8.5</TD><TD></TD></TR>
+<TR>
+<TD>paranamer-2.8</TD><TD>jar</TD><TD>2.8</TD><TD>LICENSE.txt<br></TD></TR>
+<TR>
+<TD>metrics-core-2.2.0</TD><TD>jar</TD><TD>2.2.0</TD><TD></TD></TR>
+<TR>
+<TD><A HREF="http://commons.apache.org/proper/commons-cli/">commons-cli-1.4</A></TD><TD>jar</TD><TD>1.4</TD><TD><A HREF="https://www.apache.org/licenses/LICENSE-2.0.txt">link from artifact (included file)</A><br></TD></TR>
+<TR>
+<TD>common-utils-5.5.0</TD><TD>jar</TD><TD>5.5.0</TD><TD></TD></TR>
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+<TR>
+<TD><A HREF="http://argparse4j.github.io">argparse4j-0.7.0</A></TD><TD>jar</TD><TD>0.7.0</TD><TD><A HREF="https://raw.github.com/tatsuhiro-t/argparse4j/master/LICENSE.txt">MIT</A><br></TD></TR>
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+<TD><A HREF="https://api.bintray.com/maven/jctools/jctools/jctools-core/;publish=1">netty-common-4.1.45.Final</A></TD><TD>jar</TD><TD>2.1.1</TD><TD><A HREF="http://www.apache.org/licenses/LICENSE-2.0.txt">Apache 2.0</A><br><A HREF="http://www.apache.org/licenses/LICENSE-2.0">Apache 2.0</A><br></TD></TR>
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+<TD><A HREF="http://www.slf4j.org">slf4j-simple-1.7.26</A></TD><TD>jar</TD><TD>1.7.26</TD><TD></TD></TR>
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+</TBODY>
+</TABLE>
+</BODY><HTML>

target/cp-base-new-5.5.0-package/share/doc/cp-base-new/licenses/LICENSE-argparse4j-0.7.0.txt

+/*
+ * Copyright (C) 2011-2017 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */