Update the elasticsearch cookbook

cookbooks/elasticsearch/resources/plugin.rb

@@ -0,0 +1,84 @@
+unified_mode true
+
+include ElasticsearchCookbook::Helpers
+
+property :plugin_name,
+         String,
+         name_property: true
+
+property :url,
+         String
+
+property :options,
+         String,
+         default: ''
+
+# this is what helps the various resources find each other
+property :instance_name,
+        String
+
+action :install do
+  execute "Install plugin #{new_resource.plugin_name}" do
+    command "#{es_conf.path_bin}/elasticsearch-plugin install #{new_resource.options} #{config[:plugin_name]}".chomp(' ')
+    not_if { plugin_exists? }
+    environment env
+    user config[:user] unless config[:install_type] == 'package' || config[:install_type] == 'repository'
+    group config[:group] unless config[:install_type] == 'package' || config[:install_type] == 'repository'
+  end
+end
+
+action :remove do
+  execute "Remove plugin #{new_resource.plugin_name}" do
+    command "#{es_conf.path_bin}/elasticsearch-plugin remove #{new_resource.options} #{config[:plugin_name]}".chomp(' ')
+    only_if { plugin_exists? }
+    environment env
+    user config[:user] unless config[:install_type] == 'package' || config[:install_type] == 'repository'
+    group config[:group] unless config[:install_type] == 'package' || config[:install_type] == 'repository'
+  end
+end
+
+action_class do
+  def es_user
+    find_es_resource(Chef.run_context, :elasticsearch_user, new_resource)
+  end
+
+  def es_install
+    find_es_resource(Chef.run_context, :elasticsearch_install, new_resource)
+  end
+
+  def es_conf
+    find_es_resource(Chef.run_context, :elasticsearch_configure, new_resource)
+  end
+
+  def env
+    include_file_resource = find_exact_resource(Chef.run_context, :template, "elasticsearch.in.sh-#{config[:name]}")
+    { 'ES_INCLUDE' => include_file_resource.path }
+  end
+
+  def config
+    {
+      name: new_resource.instance_name || es_conf.instance_name || 'elasticsearch',
+      plugin_name: new_resource.url || new_resource.plugin_name,
+      install_type: es_install.type,
+      user: es_user.username,
+      group: es_user.groupname,
+      path_conf: es_conf.path_conf,
+      path_plugins: es_conf.path_plugins,
+      path_bin: es_conf.path_bin,
+    }
+  end
+
+  def plugin_exists?
+    # This is quicker than shelling out to the plugin list command
+    # The plugin install command checks for the existsance of the plugin directory anyway
+    es_conf = find_es_resource(Chef.run_context, :elasticsearch_configure, new_resource)
+    path = es_conf.path_plugins
+
+    Dir.entries(path).any? do |plugin|
+      next if plugin =~ /^\./
+      config[:plugin_name] == plugin
+    end
+  rescue
+    false
+  end
+end