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# Redmine - project management software
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# Copyright (C) 2006-2013 Jean-Philippe Lang
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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module Foreman #:nodoc:
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class PluginNotFound < Foreman::Exception; end
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class PluginRequirementError < Foreman::Exception; end
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# Base class for Foreman plugins.
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# Plugins are registered using the <tt>register</tt> class method that acts as the public constructor.
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#
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# Foreman::Plugin.register :example do
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# name 'Example plugin'
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# author 'John Smith'
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# description 'This is an example plugin for Foreman'
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# version '0.0.1'
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# end
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#
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class Plugin
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@registered_plugins = {}
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class << self
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attr_reader :registered_plugins
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private :new
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def def_field(*names)
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class_eval do
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names.each do |name|
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define_method(name) do |*args|
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args.empty? ? instance_variable_get("@#{name}") : instance_variable_set("@#{name}", *args)
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end
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end
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end
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end
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# Plugin constructor
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def register(id, &block)
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plugin = new(id)
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if (gem = Gem.loaded_specs[id.to_s])
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plugin.name gem.name
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plugin.author gem.authors.join(',')
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plugin.description gem.description
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plugin.url gem.homepage
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plugin.version gem.version.to_s
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end
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plugin.instance_eval(&block)
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registered_plugins[id] = plugin
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end
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# Clears the registered plugins hash
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# It doesn't unload installed plugins
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def clear
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@registered_plugins = {}
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end
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# Returns an array of all registered plugins
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def all
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registered_plugins.values.sort
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end
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# Finds a plugin by its id
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def find(id)
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registered_plugins[id.to_sym]
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end
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# Checks if a plugin is installed
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#
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# @param [String] id name of the plugin
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def installed?(id)
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registered_plugins[id.to_sym].present?
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end
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end
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def_field :name, :description, :url, :author, :author_url, :version
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attr_reader :id
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def initialize(id)
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@id = id.to_sym
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end
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def <=>(plugin)
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self.id.to_s <=> plugin.id.to_s
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end
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def to_s
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"Foreman plugin: #{id}, #{version}, #{author}, #{description}"
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end
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# Sets a requirement on Foreman version
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# Raises a PluginRequirementError exception if the requirement is not met
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# matcher format is gem dependency format
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def requires_foreman(matcher)
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current = SETTINGS[:version].notag
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unless Gem::Dependency.new('', matcher).match?('', current)
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raise PluginRequirementError.new(N_("%{id} plugin requires Foreman %{matcher} but current is %{current}" % {:id=>id, :matcher => matcher, :current=>current}))
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end
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true
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end
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# Sets a requirement on a Foreman plugin version
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# Raises a PluginRequirementError exception if the requirement is not met
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# matcher format is gem dependency format
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def requires_foreman_plugin(plugin_name, matcher)
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plugin = Plugin.find(plugin_name)
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raise PluginNotFound.new(N_("%{id} plugin requires the %{plugin_name} plugin, not found") % {:id =>id, :plugin_name=>plugin_name}) unless plugin
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unless Gem::Dependency.new('', matcher).match?('', plugin.version)
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raise PluginRequirementError.new(N_("%{id} plugin requires the %{plugin_name} plugin %{matcher} but current is %{plugin_version}" % {:id=>id, :plugin_name=>plugin_name,:matcher=> matcher,:plugin_version=>plugin.version}))
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end
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true
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end
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# Adds an item to the given menu
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# The id parameter is automatically added to the url.
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# menu :menu_name, :plugin_example, 'menu text', { :controller => :example, :action => :index }
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#
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# name parameter can be: :top_menu or :admin_menu
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#
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def menu(menu, name, options={})
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options.merge!(:parent => @parent) if @parent
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Menu::Manager.map(menu).item(name, options)
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end
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alias :add_menu_item :menu
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def sub_menu(menu, name, options={}, &block)
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options.merge!(:parent => @parent) if @parent
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Menu::Manager.map(menu).sub_menu(name, options)
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current = @parent
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@parent = name
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self.instance_eval(&block) if block_given?
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@parent = current
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end
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def divider(menu, options = {})
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Menu::Manager.map(menu).divider(options)
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end
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# Removes item from the given menu
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def delete_menu_item(menu, item)
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Menu::Manager.map(menu).delete(item)
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end
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def security_block(name, &block)
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@security_block = name
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self.instance_eval(&block)
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@security_block = nil
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end
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# Defines a permission called name for the given controller=>actions
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# :options can contain :resource_type key which is the string of resource
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# class to which this permissions is related, rest of options is passed
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# to AccessControl
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def permission(name, hash, options={})
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resource_type = options.delete(:resource_type)
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Permission.first rescue return false
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Permission.find_or_create_by_name_and_resource_type(name, resource_type)
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options.merge!(:security_block => @security_block)
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Foreman::AccessControl.map do |map|
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map.permission name, hash, options
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end
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end
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# Add a new role if it doesn't exist
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def role(name, permissions)
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Role.transaction do
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role = Role.find_or_create_by_name(name)
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Permission.first rescue return false
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role.add_permissions!(permissions) if role.permissions.empty?
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end
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end
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end
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end
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