Class: Chef::Knife::Core::NodePresenter

Inherits:
GenericPresenter show all
Defined in:
lib/chef/knife/core/node_presenter.rb

Overview

==Chef::Knife::Core::NodePresenter A customized presenter for Chef::Node objects. Supports variable-length output formats for displaying node data

Instance Attribute Summary

Attributes inherited from GenericPresenter

#config, #ui

Instance Method Summary collapse

Methods inherited from GenericPresenter

#attribute_field_separator, #extract_nested_value, #format_cookbook_list_for_display, #format_data_subset_for_display, #format_for_display, #format_list_for_display, #formatting_subset_of_data?, #initialize, #interchange?, #name_or_id_for, #parse_format_option, #text_format

Constructor Details

This class inherits a constructor from Chef::Knife::Core::GenericPresenter

Instance Method Details

#format(data) ⇒ Object


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# File 'lib/chef/knife/core/node_presenter.rb', line 56

def format(data)
  if parse_format_option == :json
    summarize_json(data)
  else
    super
  end
end

#key(key_text) ⇒ Object


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# File 'lib/chef/knife/core/node_presenter.rb', line 152

def key(key_text)
  ui.color(key_text, :cyan)
end

#summarize(data) ⇒ Object

Converts a Chef::Node object to a string suitable for output to a terminal. If config[:medium_output] or config[:long_output] are set the volume of output is adjusted accordingly. Uses colors if enabled in the ui object.


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# File 'lib/chef/knife/core/node_presenter.rb', line 95

def summarize(data)
  if data.kind_of?(Chef::Node)
    node = data
    # special case ec2 with their split horizon whatsis.
    ip = (node[:ec2] && node[:ec2][:public_ipv4]) || node[:ipaddress]

    summarized = "\#{ui.color('Node Name:', :bold)}   \#{ui.color(node.name, :bold)}\n"
    show_policy = !(node.policy_name.nil? && node.policy_group.nil?)
    if show_policy
      summarized << "\#{key('Policy Name:')}  \#{node.policy_name}\n\#{key('Policy Group:')} \#{node.policy_group}\n"
    else
      summarized << "\#{key('Environment:')} \#{node.chef_environment}\n"
    end
    summarized << "\#{key('FQDN:')}        \#{node[:fqdn]}\n\#{key('IP:')}          \#{ip}\n\#{key('Run List:')}    \#{node.run_list}\n"
    unless show_policy
      summarized << "\#{key('Roles:')}       \#{Array(node[:roles]).join(', ')}\n"
    end
    summarized << "\#{key('Recipes:')}     \#{Array(node[:recipes]).join(', ')}\n\#{key('Platform:')}    \#{node[:platform]} \#{node[:platform_version]}\n\#{key('Tags:')}        \#{node.tags.join(', ')}\n"
    if config[:medium_output] || config[:long_output]
      summarized += "\#{key('Attributes:')}\n\#{text_format(node.normal_attrs)}\n"
    end
    if config[:long_output]
      summarized += "\#{key('Default Attributes:')}\n\#{text_format(node.default_attrs)}\n\#{key('Override Attributes:')}\n\#{text_format(node.override_attrs)}\n\#{key('Automatic Attributes (Ohai Data):')}\n\#{text_format(node.automatic_attrs)}\n"
    end
    summarized
  else
    super
  end
end

#summarize_json(data) ⇒ Object


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# File 'lib/chef/knife/core/node_presenter.rb', line 64

def summarize_json(data)
  if data.kind_of?(Chef::Node)
    node = data
    result = {}

    result["name"] = node.name
    if node.policy_name.nil? && node.policy_group.nil?
      result["chef_environment"] = node.chef_environment
    else
      result["policy_name"] = node.policy_name
      result["policy_group"] = node.policy_group
    end
    result["run_list"] = node.run_list
    result["normal"] = node.normal_attrs

    if config[:long_output]
      result["default"]   = node.default_attrs
      result["override"]  = node.override_attrs
      result["automatic"] = node.automatic_attrs
    end

    Chef::JSONCompat.to_json_pretty(result)
  else
    Chef::JSONCompat.to_json_pretty(data)
  end
end