Class: KnifePlugins::RackspaceLoadBalancerDeleteNode

Inherits:
Chef::Knife
  • Object
show all
Includes:
Chef::Knife::RackspaceBase, Chef::Knife::RackspaceLoadBalancerBase, Chef::Knife::RackspaceLoadBalancerNodes
Defined in:
lib/chef/knife/rackspace_load_balancer_delete_node.rb

Instance Method Summary collapse

Methods included from Chef::Knife::RackspaceLoadBalancerNodes

#nodes_by_search, #resolve_node_ips_from_config

Methods included from Chef::Knife::RackspaceLoadBalancerBase

included, #lb_connection, #rackspace_api_credentials

Instance Method Details

#run ⇒ Object 



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# File 'lib/chef/knife/rackspace_load_balancer_delete_node.rb', line 43

def run
  unless [:all, :except, :only].any? {|target| not config[target].nil?}
    ui.fatal("Must provide a target set of load balancers with --all, --except, or --only")
    show_usage
    exit 1
  end

  unless [:by_name, :by_private_ip, :by_search].any? {|addition| not config[addition].nil?}
    ui.fatal("Must provide a set of nodes to remove with --by-name, --by-private-ip, or --by-search")
    show_usage
    exit 2
  end

  node_ips = resolve_node_ips_from_config({
    :by_search     => config[:by_search],
    :by_name       => config[:by_name],
    :by_private_ip => config[:by_private_ip]
  })

  nodes = node_ips.map do |ip|
    { :address => ip }
  end

  if nodes.empty?
    ui.fatal("Node resolution did not provide a set of nodes for removal")
    exit 3
  end

  target_load_balancers = lb_connection.list_load_balancers

  if config[:only]
    only = config[:only].split(",").map(&:to_s)
    target_load_balancers = target_load_balancers.select {|lb| only.include? lb[:id].to_s}
  end

  if config[:except]
    except = config[:except].split(",").map(&:to_s)
    target_load_balancers = target_load_balancers.reject {|lb| except.include? lb[:id].to_s}
  end

  if target_load_balancers.empty?
    ui.fatal("Load balancer resolution did not provide a set of target load balancers")
    exit 4
  end

  ui.output(format_for_display({
    :targets => target_load_balancers.map {|lb| lb[:name]},
    :nodes => nodes
  }))

  unless config[:force]
    ui.confirm("Do you really want to remove these nodes")
  end

  target_load_balancers.each do |lb|
    begin
      ui.output("Opening #{lb[:name]}")
      balancer = lb_connection.get_load_balancer(lb[:id])

      lb_nodes = balancer.list_nodes
      lb_nodes.each do |lb_node_hash|
        if node_ips.include? lb_node_hash[:address].to_s
          lb_node = balancer.get_node(lb_node_hash[:id])
          ui.output("Removing node #{lb_node.address}")
          if lb_node.destroy!
            ui.output(ui.color("Success", :green))
          end
        end
      end

    rescue CloudLB::Exception::Other => e
      ui.error("Failed on #{lb[:name]}: CloudLB::Exception [#{e.class.name}] - #{e.message}")
    end
  end

  ui.output(ui.color("Complete", :green))
end