# File lib/fog/aws/requests/ecs/describe_clusters.rb, line 29
        def describe_clusters(params={})
          response = Excon::Response.new
          response.status = 200

          members = params.delete('clusters')
          members = 'default' unless members
          clusters = []
          failures = []

          [*members].each do |c|
            if match = c.match(/^arn:aws:ecs:.+:\d{1,12}:cluster\/(.+)$/)
              result = self.data[:clusters].select { |cl| cl['clusterArn'].eql?(c) }
            else
              result = self.data[:clusters].select { |cl| cl['clusterName'].eql?(c) }
            end
            if result.empty?
              cluster_name = match[1] if match
              cluster_name = c        unless match
              failures << { 'name' => cluster_name }
            else
              clusters << result.first
            end
          end

          owner_id = Fog::AWS::Mock.owner_id

          failures.map! do |f|
            {
              'arn' => Fog::AWS::Mock.arn('ecs', owner_id, "cluster/#{f['name']}", region),
              'reason' => 'MISSING'
            }
          end
          clusters.map! do |c|
            {
              'clusterName' => c['clusterName'],
              'clusterArn'  => c['clusterArn'],
              'status'      => c['status']
            }
          end

          response.body = {
            'DescribeClustersResult' => {
              'failures' => failures,
              'clusters' => clusters
            },
            'ResponseMetadata' => {
              'RequestId' => Fog::AWS::Mock.request_id
            }
          }
          response
        end