Class: Host::Default

Inherits:
Object
  • Object
show all
Defined in:
lib/host/default.rb

Direct Known Subclasses

EC2

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host = 'unspecified', info = {}, opts = {}) ⇒ Default

Returns a new instance of Default.



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# File 'lib/host/default.rb', line 6

def initialize( host = 'unspecified', info = {}, opts = {} )
  @alias = host

  @host_name = info[ "HostName" ] || nil
  @user = info[ "User" ] || Etc.getlogin
  @ssh_pem = info[ "IdentityFile" ] || nil
  @ssh_port = info[ "Port" ] || nil
  @type = info[ "Type" ] || :default
  @tags = info[ "Tags" ] || {}
  @pem_dirs = opts[ "IdentityLocations" ] || nil
end

Instance Attribute Details

#alias ⇒ Object (readonly)

Returns the value of attribute alias.



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# File 'lib/host/default.rb', line 4

def alias
  @alias
end

#host_name ⇒ Object (readonly)

Returns the value of attribute host_name.



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# File 'lib/host/default.rb', line 4

def host_name
  @host_name
end

#ssh_pem ⇒ Object (readonly)

Returns the value of attribute ssh_pem.



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# File 'lib/host/default.rb', line 4

def ssh_pem
  @ssh_pem
end

#tags ⇒ Object

Returns the value of attribute tags.



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# File 'lib/host/default.rb', line 4

def tags
  @tags
end

#user ⇒ Object (readonly)

Returns the value of attribute user.



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# File 'lib/host/default.rb', line 4

def user
  @user
end

Instance Method Details

#matches?(tags) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/host/default.rb', line 27

def matches?( tags )
  tags.each do | tag, value |
    is_regex = value.match( /^\/(.*)\/$/ )

    if is_regex
      regex = Regexp.new( is_regex[ 1 ] )

      unless @tags.has_key?( tag ) && @tags[ tag ].match( regex )
        return false
      end
    else
      unless @tags.has_key?( tag ) && @tags[ tag ] == value
        return false
      end
    end
  end

  true
end

#shell!(opts = nil) ⇒ Object

Raises:

  • (IOError) 


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# File 'lib/host/default.rb', line 67

def shell!( opts = nil )
  ssh_cmd = [ "ssh" ]

  raise( IOError, "Error: HostName invalid." ) if @host_name.nil?

  ssh_cmd << [ "-l", @user ]
  ssh_cmd << @host_name

  pem = ssh_pem
  ssh_cmd << [ "-i", pem ] unless pem.nil?

  begin
    exec( ssh_cmd.join(" ") )
  rescue => e
    raise( IOError,  "Could not call ssh." )
  end
end

#shell_exec!(command, opts = {}) ⇒ Object 



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# File 'lib/host/default.rb', line 85

def shell_exec!( command, opts = {} )
  ssh_pem

  options = { :keys => ssh_pem }

  color = Color.random_color

  begin
    Net::SSH.start( host_name, user, options ) do | s |

      channel = s.open_channel do |ch|
        channel.request_pty do |ch, success|
          if success
            puts "pty successfully obtained"
          else
            puts "could not obtain pty"
          end
        end if opts.has_key? :pty

        ch.exec( command ) do | ch, success |
          raise( IOError,
            "#{ host_name } > could not execute command" ) unless
              success

          ch.on_data do | c, data |
            data.split("\n").each do | line |
              puts "#{ Color.print(
                self.alias, [ :bold, color ] ) } > #{ line }"
            end
          end

          ch.on_extended_data do |c, type, data|
            data.split("\n").each do | line |
              puts "#{ Color.print(
                self.alias, [ :bold, color ] ) } > #{ line }"
            end
          end

          ch.on_close do
            puts "#{ Color.print(
              self.alias, [ :bold, color ] ) } > COMMAND finished"
          end

        end
      end
    end
  rescue => e
    puts "Error: #{ self.alias } > #{ e.message }".error
  end
end

#type ⇒ Object 



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# File 'lib/host/default.rb', line 18

def type
  @type.to_sym
end