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init.pp
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	# Class: zookeeper
	#
	# This module manages zookeeper
	#
	# Parameters:
	# id
	# user
	# group
	# log_dir
	#
	# Sample Usage:
	#
	# class { 'zookeeper': }
	#
	class zookeeper(
	$id = '1',
	$datastore = '/var/lib/zookeeper',
	# datalogstore used to put transaction logs in separate location than snapshots
	$datalogstore = undef,
	$initialize_datastore = false,
	# fact from which we get public ip address
	$client_ip = undef, # use e.g. $::ipaddress if you want to bind to single interface
	$client_port = 2181,
	$election_port = 2888,
	$leader_port = 3888,
	$log_dir = '/var/log/zookeeper',
	$cfg_dir = '/etc/zookeeper/conf',
	$zoo_dir = '/usr/lib/zookeeper',
	$user = 'zookeeper',
	$group = 'zookeeper',
	$ensure_account = present,
	$java_bin = '/usr/bin/java',
	$java_opts = '',
	$pid_dir = '/var/run',
	$pid_file = undef,
	$zoo_main = 'org.apache.zookeeper.server.quorum.QuorumPeerMain',
	$log4j_prop = 'INFO,ROLLINGFILE',
	$cleanup_sh = '/usr/share/zookeeper/bin/zkCleanup.sh',
	$servers = [],
	$observers = [],
	$ensure = present,
	$snap_count = 10000,
	# since zookeeper 3.4, for earlier version cron task might be used
	$snap_retain_count = 3,
	# interval in hours, purging enabled when >= 1
	$purge_interval = 0,
	# log4j properties
	$rollingfile_threshold = 'ERROR',
	$tracefile_threshold = 'TRACE',
	$max_allowed_connections = undef,
	$peer_type = 'UNSET',
	$start_with = undef,
	$ensure_cron = true,
	$service_package = undef,
	$service_name = $::zookeeper::params::service_name,
	$service_provider = $::zookeeper::params::service_provider,
	$manage_service = true,
	$manage_service_file = false,
	$packages = $::zookeeper::params::packages,
	$cdhver = undef,
	$install_java = false,
	$java_package = undef,
	$min_session_timeout = undef,
	$max_session_timeout = undef,
	$manage_systemd = undef,
	$repo = undef,
	# systemd_unit_want and _after can be overridden to
	# donate the matching directives in the [Unit] section
	$systemd_unit_want = undef,
	$systemd_unit_after = 'network.target',
	) inherits ::zookeeper::params {

	validate_array($packages)
	validate_bool($ensure_cron)
	validate_bool($manage_service)
	validate_bool($install_java)
	validate_bool($initialize_datastore)

	if($service_package) {
	warning('Parameter `service_package` is deprecated, use `packages` array instead.')
	}

	if ($start_with) {
	warning('Parameter `start_with` is deprecated, use `service_provider` instead. `start_with` will be removed in next major release.')
	$_service_provider = $start_with
	} else {
	$_service_provider = $service_provider
	}

	if ($manage_systemd) {
	warning('Parameter `manage_systemd` is deprecated, use `manage_service_file` instead. `manage_systemd` will be removed in next major release.')
	$_manage_service_file = $manage_systemd
	} else {
	$_manage_service_file = $manage_service_file
	}

	anchor { 'zookeeper::start': }->
	class { 'zookeeper::install':
	ensure => $ensure,
	snap_retain_count => $snap_retain_count,
	datastore => $datastore,
	user => $user,
	group => $group,
	ensure_account => $ensure_account,
	cleanup_sh => $cleanup_sh,
	service_provider => $_service_provider,
	ensure_cron => $ensure_cron,
	service_package => $service_package,
	packages => $packages,
	repo => $repo,
	cdhver => $cdhver,
	install_java => $install_java,
	java_package => $java_package,
	}->
	class { 'zookeeper::config':
	id => $id,
	datastore => $datastore,
	datalogstore => $datalogstore,
	initialize_datastore => $initialize_datastore,
	client_ip => $client_ip,
	client_port => $client_port,
	election_port => $election_port,
	leader_port => $leader_port,
	log_dir => $log_dir,
	cfg_dir => $cfg_dir,
	user => $user,
	group => $group,
	java_bin => $java_bin,
	java_opts => $java_opts,
	pid_dir => $pid_dir,
	pid_file => $pid_file,
	zoo_main => $zoo_main,
	log4j_prop => $log4j_prop,
	servers => $servers,
	observers => $observers,
	snap_count => $snap_count,
	snap_retain_count => $snap_retain_count,
	purge_interval => $purge_interval,
	rollingfile_threshold => $rollingfile_threshold,
	tracefile_threshold => $tracefile_threshold,
	max_allowed_connections => $max_allowed_connections,
	peer_type => $peer_type,
	min_session_timeout => $min_session_timeout,
	max_session_timeout => $max_session_timeout,
	systemd_unit_want => $systemd_unit_want,
	systemd_unit_after => $systemd_unit_after,
	}

	if ($manage_service) {
	class { 'zookeeper::service':
	cfg_dir => $cfg_dir,
	zoo_dir => $zoo_dir,
	service_name => $service_name,
	service_provider => $_service_provider,
	manage_service_file => $_manage_service_file,
	require => Class['zookeeper::config'],
	before => Anchor['zookeeper::end'],
	user => $user,
	group => $group,
	pid_file => $pid_file,
	zoo_main => $zoo_main,
	log_dir => $log_dir,
	log4j_prop => $log4j_prop
	}
	}
	anchor { 'zookeeper::end': }

	}

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