Add Gemfile and puppet 4 checks

In anticipation of puppet 4, start trying to deal with puppet 4 things
that can be helpfully predicted by puppet lint plugins. Also fix lint
errors caught by the puppet-lint-absolute_classname-check and
puppet-lint-empty_string-check gems.

This patch changes a scope.lookupvar function call to ruby instance
variable in the jenkins-log-client.default.erb template. This is safe
to do because the template is called in the log_processor::client class
and the variable in question is within that scope.

Change-Id: Ia7d6af8bc76a65e37f5dfd184e37855fe3b97046

.gitignore

@@ -0,0 +1,2 @@
+Gemfile.lock
+.bundled_gems/

Gemfile

@@ -0,0 +1,30 @@
+source 'https://rubygems.org'
+
+group :development, :test do
+  gem 'puppetlabs_spec_helper', :require => false
+
+  gem 'metadata-json-lint'
+  # This is nice and all, but let's not worry about it until we've actually
+  # got puppet 4.x sorted
+  # gem 'puppet-lint-param-docs'
+  gem 'puppet-lint-absolute_classname-check'
+  gem 'puppet-lint-absolute_template_path'
+  gem 'puppet-lint-trailing_newline-check'
+
+  # Puppet 4.x related lint checks
+  gem 'puppet-lint-unquoted_string-check'
+  gem 'puppet-lint-empty_string-check'
+  gem 'puppet-lint-leading_zero-check'
+  gem 'puppet-lint-variable_contains_upcase'
+  gem 'puppet-lint-spaceship_operator_without_tag-check'
+  gem 'puppet-lint-undef_in_function-check'
+
+  if puppetversion = ENV['PUPPET_GEM_VERSION']
+    gem 'puppet', puppetversion, :require => false
+  else
+    gem 'puppet', '~> 3.0', :require => false
+  end
+
+end
+
+# vim:ft=ruby

manifests/client.pp

@@ -17,7 +17,7 @@
 #
 class log_processor::client (
   $config_file,
-  $statsd_host = '',
+  $statsd_host = undef,
 ) {
 
   file { '/etc/logstash/jenkins-log-client.yaml':
@@ -57,7 +57,7 @@ class log_processor::client (
     require    => File['/etc/init.d/jenkins-log-client'],
   }
 
-  include logrotate
+  include ::logrotate
   logrotate::file { 'log-client-debug.log':
     log     => '/var/log/logstash/log-client-debug.log',
     options => [

manifests/init.pp

@@ -33,7 +33,7 @@ class log_processor (
     ensure => present,
   }
 
-  include pip
+  include ::pip
   package { 'gear':
     ensure   => latest,
     provider => 'pip',

manifests/worker.pp

@@ -51,7 +51,7 @@ define log_processor::worker (
     ],
   }
 
-  include logrotate
+  include ::logrotate
   logrotate::file { "log-worker${suffix}-debug.log":
     log     => "/var/log/logstash/log-worker${suffix}-debug.log",
     options => [

templates/jenkins-log-client.default.erb

@@ -1,5 +1,5 @@
-<% if scope.lookupvar("log_processor::client::statsd_host") != "" %>
-export STATSD_HOST=<%= scope.lookupvar("log_processor::client::statsd_host") %>
+<% if @statsd_host != nil %>
+export STATSD_HOST=<%= @statsd_host %>
 export STATSD_PORT=8125
 export STATSD_PREFIX="logstash.geard"
 <% end %>