foreman_column_view

A small plugin to showcase the awesome Deface library. It simply adds a column to the Hosts list or properties table. It also serves as a simple example of including a new Helper in the plugin.

Installation

Require the gem in Foreman (you may need extra dependencies such as libxml or libxslt to build the nokogiri dependency)

gem 'foreman_column_view'

Update Foreman with the new gems:

bundle update foreman_column_view

Configuration

By default the plugin will display the Domain associated by each host. This is not massively useful. To set your own choice of column, add this to Foreman's plugin config file foreman_column_view.yaml. For package based installs this should be in /etc/foreman/plugins/foreman_column_view.yaml. For source installs this should be in config/settings.plugins.d within your install directory.

:column_view:
  :name1:
    :title: Shortname1
    :after: last_report
    :content: shortname1
  :name2:
    :title: Shortname2
    :after: name1
    :content: facts_hash['shortname2']

title is an arbitrary string which is displayed as the column header. content is a method call to the Host object, using host.send. In these examples facts_hash and params are method calls to Host returning hash values.

:column_view:
  :architecture:
    :title: Architecture
    :after: last_report
    :content: facts_hash['architecture']
  :uptime:
    :title: Uptime
    :after: architecture
    :content: facts_hash['uptime']
  :color:
    :title: Color
    :after: last_report
    :content: params['favorite_color']

Additional rows can also be added to the Properties table on the host page by setting :view: :hosts_properties. The position is also controlled by :after using either a numeric index to represent the row or the name of the previous row (however this will not work well when the Foreman language is switched). An example configuration:

:column_view:
  :uptime:
    :title: Uptime
    :after: 6
    :content: facts_hash['uptime']
    :view: :hosts_properties

You can also control the width of the added column by giving a value to the :width attribute. If the width is not set, the default is set to 10%. Note that the original host list already has 100% width set, so adding more columns will cause other columns to resize, which may cause some of the table layout to break a bit. For example:

:column_view:
  :domain:
    :title: Domain
    :after: model
    :content: domain
    :width: 7%

If you need to add information not readily available in a host, you can add information that will be evaluated on runtime by adding :eval_content: true to your additional row. Also, some times you do not want to show the additional row if a certain condition is not met, in order to show that row conditionally, add :conditional: :condition_symbol to your configuration, and that conditional will be executed on your host.

As an example, the following yaml shows a link to a custom URL if the method host.bmc_available? is true.

  :console:
    :title: Console
    :after: 0
    :content: link_to(_("Console"), "https://#{host.interfaces.first.name}.domainname", { :class => "btn btn-info" } )
    :conditional: :bmc_available?
    :eval_content: true
    :view: :hosts_properties

If your conditional method needs arguments to work, the arguments should go after the method name separated by spaces, as in :custom_method arg1 arg2

You will need to restart Foreman for changes to take effect, as the settings.yaml is only read at startup.

TODO

• Add plugin settings to the Settings UI
• Make the column sortable
• Support adding data to other pages

Copyright

Copyright (c) 2013 Greg Sutcliffe

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.