Module: Chef::Knife::HadoopBase

Included in:
HadoopHdfsCreate, HadoopHdfsList, HadoopHdfsSnapshot, HadoopHdfsUpdate, HadoopMapredJobKill, HadoopMapredJobList, HadoopSetup
Defined in:
lib/chef/knife/hadoop_base.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(includer) ⇒ Object 



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# File 'lib/chef/knife/hadoop_base.rb', line 29

def self.included(includer)
  includer.class_eval do

    deps do
      require 'readline'
      require 'chef/json_compat'
    end

    option :namenode_username,
      :short => "-U USERNAME",
      :long => "--namenode-username USERNAME",
      :description => "NameNode Username",
      :proc => Proc.new { |key| Chef::Config[:knife][:namenode_username] = key }

    option :namenode_password,
      :short => "-P PASSWORD",
      :long => "--namenode-password PASSWORD",
      :description => "NameNode password",
      :proc => Proc.new { |key| Chef::Config[:knife][:namenode_password] = key }

    option :namenode_host,
      :short => "-H HOST",
      :long => "--namenode-host HOST",
      :description => "NameNode FQDN or IP address",
      :proc => Proc.new { |endpoint| Chef::Config[:knife][:namenode_host] = endpoint }

    option :namenode_port,
      :short => "-A PORT",
      :long => "--namenode-port PORT",
      :description => "NameNode port",
      :proc => Proc.new { |key| Chef::Config[:knife][:namenode_port] = key }

    option :db_type,
      :short => "-T DATABASETYPE",
      :long => "--database-type DATABASETYPE",
      :description => "PostgreSQL or Sqlite Database to use for Hadoop Management Data",
      :proc => Proc.new { |key| Chef::Config[:knife][:db] = key }

    option :db,
      :short => "-D DATABASE",
      :long => "--database DATABASE",
      :description => "PostgreSQL Database to use for Hadoop Management Data",
      :proc => Proc.new { |key| Chef::Config[:knife][:db] = key }

    option :db_username,
      :short => "-B DBUSERNAME",
      :long => "--db-username DBUSERNAME",
      :description => "PostgreSQL DB Username",
      :proc => Proc.new { |key| Chef::Config[:knife][:db_username] = key }

    option :db_password,
      :short => "-C DBPASSWORD",
      :long => "--db-password DBPASSWORD",
      :description => "PostgreSQL DB Password",
      :proc => Proc.new { |key| Chef::Config[:knife][:db_password] = key }

    option :db_host,
      :short => "-I DBHOST",
      :long => "--db-host DBHOST",
      :description => "PostgreSQL DB Host",
      :proc => Proc.new { |key| Chef::Config[:knife][:db_host] = key }
    
  end
end

Instance Method Details

#db_connection ⇒ Object 



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# File 'lib/chef/knife/hadoop_base.rb', line 106

def db_connection
  Chef::Log.debug("db_type: #{Chef::Config[:knife][:db_type]}")
  Chef::Log.debug("db: #{Chef::Config[:knife][:db]}")
  Chef::Log.debug("db_username: #{Chef::Config[:knife][:db_username]}")
  Chef::Log.debug("db_password: #{Chef::Config[:knife][:db_password]}")
  Chef::Log.debug("db_host: #{Chef::Config[:knife][:db_host]}")
  db_type = "#{Chef::Config[:knife][:db_type]}".downcase
  case db_type
  when 'postgres'
    @db_connection ||= begin
      db_connection = Sequel.connect("postgres://#{Chef::Config[:knife][:db_username]}"+':'+
                                     "#{Chef::Config[:knife][:db_password]}"+'@'+
                                     "#{Chef::Config[:knife][:db_host]}"+'/'+ 
                                     "#{Chef::Config[:knife][:db]}")
    end
  when 'sqlite'
    @db_connection ||= begin
      db_dir = Dir.mkdir(File.expand_path "~/.db/")
      db_connection = Sequel.sqlite("#{db_dir}/" + "#{Chef::Config[:knife][:db]}")
    end
  end
end

#hdfs_connection ⇒ Object 



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# File 'lib/chef/knife/hadoop_base.rb', line 94

def hdfs_connection
  Chef::Log.debug("username: #{Chef::Config[:knife][:namenode_username]}")
  Chef::Log.debug("password: #{Chef::Config[:knife][:namenode_password]}")
  Chef::Log.debug("host:     #{Chef::Config[:knife][:namenode_host]}")
  Chef::Log.debug("port:     #{Chef::Config[:knife][:namenode_port]}")
  @hdfs_connection ||= begin
    hdfs_connection = WebHDFS::Client.new("#{Chef::Config[:knife][:namenode_host]}", 
                                     "#{Chef::Config[:knife][:namenode_port]}",
                                     "#{Chef::Config[:knife][:namenode_username]}")
  end
end

#locate_config_value(key) ⇒ Object 



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# File 'lib/chef/knife/hadoop_base.rb', line 130

def locate_config_value(key)
  key = key.to_sym
  Chef::Config[:knife][key] || config[key]
end

#msg_pair(label, value, color = :cyan) ⇒ Object 



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# File 'lib/chef/knife/hadoop_base.rb', line 135

def msg_pair(label, value, color=:cyan)
  if value && !value.to_s.empty?
    puts "#{ui.color(label, color)}: #{value}"
  end
end