Class: KnifeTopo::TopoDelete

Inherits:
Chef::Knife
  • Object
show all
Includes:
CommandHelper, Loader
Defined in:
lib/chef/knife/topo_delete.rb

Overview

knife topo delete

Instance Attribute Summary

Attributes included from Loader

#loader, #ui

Instance Method Summary collapse

Methods included from Loader

#auto_detect_format, #check_file, #create_topo_bag, #get_local_topo_path, #list_topo_bag, #load_local_topo_or_exit, #load_node_data, #load_topo_from_file_or_exit, #load_topo_from_server, #load_topo_from_server_or_exit, #priority_attrs, #topo_bag_name, #topologies_path

Methods included from CommandHelper

#check_chef_env, #initialize_cmd_args, #most_common, #resource_exists?, #run_cmd

Instance Method Details

#confirm_and_delete_nodes ⇒ Object 



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# File 'lib/chef/knife/topo_delete.rb', line 67

def confirm_and_delete_nodes
  confirm("Do you want to delete topology #{@topo_name} - " \
    'this does not delete nodes')
  @topo['nodes'].each do |node|
    remove_node_from_topology(node['name'])
  end if @topo['nodes']
end

#delete_topo ⇒ Object 



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# File 'lib/chef/knife/topo_delete.rb', line 75

def delete_topo
  @topo.destroy(topo_bag_name, @topo_name)
  ui.info "Deleted topology #{@topo_name}"
end

#remove_node_from_topology(node_name) ⇒ Object

Remove the topo name attribute from all nodes, so topo search knows they are not in the topology



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# File 'lib/chef/knife/topo_delete.rb', line 82

def remove_node_from_topology(node_name)
  # load then update and save the node
  node = Chef::Node.load(node_name)

  if node['topo'] && node['topo']['name'] == @topo_name
    node.rm('topo', 'name')
    ui.info "Removing node #{node.name} from topology"
    node.save
  end
  node

rescue Net::HTTPServerException => e
  raise unless e.to_s =~ /^404/
  # Node has not been created
end

#run ⇒ Object 



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# File 'lib/chef/knife/topo_delete.rb', line 42

def run
  validate_args
  config[:disable_editing] = true

  # remove each node
  @topo = load_topo_from_server(@topo_name)
  unless @topo
    ui.info "Topology #{topo_bag_name}/#{@topo_name} does not " \
      'exist on server'
    exit(0)
  end

  confirm_and_delete_nodes
  delete_topo
end

#validate_args ⇒ Object 



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# File 'lib/chef/knife/topo_delete.rb', line 58

def validate_args
  unless @name_args[0]
    show_usage
    ui.fatal('You must specify the name of a topology')
    exit 1
  end
  @topo_name = @name_args[0]
end