crowbar/crowbar-client

#
# Copyright 2015, SUSE Linux GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

module Crowbar
  module Client
    module Command
      module Node
        #
        # Implementation for the node list command
        #
        class List < Base
          include Mixin::Format
          include Mixin::Filter

          def request
            @request ||= Request::Node::List.new(
              args
            )
          end

          def execute
            request.process do |request|
              case request.code
              when 200
                formatter = Formatter::Hash.new(
                  format: provide_format,
                  headings: headings,
                  values: Filter::Hash.new(
                    filter: provide_filter,
                    values: content_from(request)
                  ).result
                )

                if formatter.empty?
                  err "No nodes"
                else
                  say formatter.result
                end
              else
                err request.parsed_response["error"]
              end
            end
          end

          protected

          def headings
            if options["meta"]
              [
                "Name",
                "Alias",
                "Group",
                "Status"
              ]
            else
              [
                "Name"
              ]
            end
          end

          def content_from(request)
            result = [].tap do |row|
              request.parsed_response["nodes"].each do |child|
                if options["meta"]
                  row.push(
                    child.slice(
                      "name",
                      "alias",
                      "group",
                      "status"
                    )
                  )
                else
                  row.push(
                    child.slice(
                      "name"
                    )
                  )
                end
              end
            end

            result.sort do |x, y|
              [
                x["name"],
                x["alias"]
              ] <=> [
                y["name"],
                y["alias"]
              ]
            end
          end
        end
      end
    end
  end
end