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init.pp
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init.pp
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# == Class kafka
# Installs Kafka package and sets up defaults configs for clients (producer & consumer).
#
# == Parameters:
# $hosts - Hash of zookeeper hosts config keyed by
# fqdn of each kafka broker host. This Hash
# should be of the form:
# { 'hostA' => { 'id' => 1, 'port' => 12345 }, 'hostB' => { 'id' => 2 }, ... }
# 'port' is optional, and will default to 9092.
# This Hash is used to configure both kafka
# clients and broker servers.
#
# $zookeeper_hosts - Array of zookeeper hostname/IP(:port)s.
# Default: ['localhost:2181]
#
# $zookeeper_connection_timeout_ms - Timeout in ms for connecting to zookeeper.
# Default: 1000000
#
# $zookeeper_chroot - Path in zookeeper in which to keep Kafka data.
# Default: undef (the root znode). Note that if you set
# this paramater, the znode will not be created for you.
# You must do so manually yourself. See the README
# for instructions on how to do so.
#
# $kafka_log_file - File in which to store Kafka logs
# (not event data). Default: /var/log/kafka/kafka.log
#
# $producer_type - Specifies whether the messages are
# (by default) sent asynchronously (async)
# or synchronously (sync). Default: async
#
# $producer_batch_num_messages - The number of messages batched at the
# producer. Default: 200.
#
# $consumer_group_id - The consumer group.id set in consumer.properties.
# Default: test-consumer-group
#
# $version - Kafka package version number. Set this
# if you need to override the default
# package version. If you override this,
# the version must be >= 0.8. Default: installed.
class kafka(
$hosts = $kafka::defaults::hosts,
$zookeeper_hosts = $kafka::defaults::zookeeper_hosts,
$zookeeper_connection_timeout_ms = $kafka::defaults::zookeeper_connection_timeout_ms,
$zookeeper_chroot = $kafka::defaults::zookeeper_chroot,
$kafka_log_file = $kafka::defaults::kafka_log_file,
$producer_type = $kafka::defaults::producer_type,
$producer_batch_num_messages = $kafka::defaults::producer_batch_num_messages,
$consumer_group_id = $kafka::defaults::consumer_group_id,
$version = $kafka::defaults::version,
$producer_properties_template = $kafka::defaults::producer_properties_template,
$consumer_properties_template = $kafka::defaults::consumer_properties_template,
$log4j_properties_template = $kafka::defaults::log4j_properties_template
) inherits kafka::defaults
{
package { 'kafka':
ensure => $version,
}
file { '/etc/kafka/producer.properties':
content => template($producer_properties_template),
require => Package['kafka'],
}
file { '/etc/kafka/consumer.properties':
content => template($consumer_properties_template),
require => Package['kafka'],
}
file { '/etc/kafka/log4j.properties':
content => template($log4j_properties_template),
require => Package['kafka'],
}
}

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