Class: Chef::Knife::HadoopHdfsUsage

Inherits:
Chef::Knife show all
Includes:
HadoopBase
Defined in:
lib/chef/knife/hadoop_hdfs_usage.rb

Instance Method Summary collapse

Methods included from HadoopBase

#db_connection, #hdfs_connection, included, #locate_config_value, #msg_pair

Instance Method Details

#run ⇒ Object 



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# File 'lib/chef/knife/hadoop_hdfs_usage.rb', line 60

def run
  $stdout.sync = true
  
  hdfs_usage_summary_list = [
    ui.color('Configured Capacity',           :bold),
    ui.color('Present Capacity',              :bold),
    ui.color('DFS Remaining',                 :bold),
    ui.color('DFS Used',                      :bold),
    ui.color('DFS Used%',                     :bold),
    ui.color('Under replicated blocks',       :bold),
    ui.color('Blocks with corrupt replicas',  :bold),
    ui.color('Missing blocks',                :bold),
    ui.color('Datanodes available',           :bold)
  ]

  hdfs_usage_node_list = [
    ui.color('Data Node',                     :bold),
    ui.color('Decommission Status',           :bold),
    ui.color('Configured Capacity',           :bold),
    ui.color('DFS Used',                      :bold),
    ui.color('Non DFS Used',                  :bold),
    ui.color('DFS Remaining',                 :bold),
    ui.color('DFS Used%',                     :bold),
    ui.color('DFS Remaining%',                :bold),
    ui.color('Last contact',                  :bold)
  ]        
  
  type = "#{Chef::Config[:knife][:type]}".downcase
  case type
  when 'summary'
    Net::SSH.start( "#{Chef::Config[:knife][:namenode_host]}", 
                    "#{Chef::Config[:knife][:ssh_user]}", :password => "#{Chef::Config[:knife][:ssh_password]}" ) do|ssh|
      result = ssh.exec!('hadoop dfsadmin -report')
      hdfs_usage_summary_list << result.match(/Configured Capacity: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_summary_list << result.match(/Present Capacity: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_summary_list << result.match(/DFS Remaining: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_summary_list << result.match(/DFS Used: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_summary_list << result.match(/DFS Used%: \d+(.*?).*/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_summary_list << result.match(/Under replicated blocks: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_summary_list << result.match(/Blocks with corrupt replicas: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_summary_list << result.match(/Missing blocks: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_summary_list << result.match(/Datanodes available: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
    end
    puts ui.list(hdfs_usage_summary_list, :uneven_columns_across, 9)
  when 'detail'
    Net::SSH.start( "#{Chef::Config[:knife][:namenode_host]}", 
                    "#{Chef::Config[:knife][:ssh_user]}", :password => "#{Chef::Config[:knife][:ssh_password]}" ) do|ssh|
      result = ssh.exec!('hadoop dfsadmin -report')
      hdfs_usage_node_list << result.match(/Name: \d+(.*?).*/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_node_list << result.match(/Decommission Status : \w+(.*?).*/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_node_list << result.match(/Configured Capacity: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_node_list << result.match(/DFS Used: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_node_list << result.match(/Non DFS Used: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_node_list << result.match(/DFS Remaining: \d+(.*?)/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_node_list << result.match(/DFS Used%: \d+(.*?).*/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_node_list << result.match(/DFS Remaining%: \d+(.*?).*/).to_s.split(':')[1].gsub(/\s+/, "")
      hdfs_usage_node_list << result.match(/Last contact: \w+(.*?) .*/).to_s.split(':')[1] 
    end
    puts ui.list(hdfs_usage_node_list, :uneven_columns_across, 9)
  when 'report'
    Net::SSH.start( "#{Chef::Config[:knife][:namenode_host]}", 
                    "#{Chef::Config[:knife][:ssh_user]}", :password => "#{Chef::Config[:knife][:ssh_password]}" ) do|ssh|
      result = ssh.exec!('hadoop dfsadmin -report')
      file = "hdfs_usage_report_created_on_#{Time.now}.txt"
      File.open("/tmp/#{file}", 'w') do |f|
        f.write(result)
        f.close
      end
      hdfs_connection.create("#{Chef::Config[:knife][:dir]}/#{file}", result)
    end
  end  
end