Class: Tailer::CommandLine

Inherits:
Object
  • Object
show all
Defined in:
lib/tailer/command_line.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CommandLine

Returns a new instance of CommandLine.



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# File 'lib/tailer/command_line.rb', line 28

def initialize
  @options = {}
  begin
    @optparse = OptionParser.new do |opts|
      opts.banner = "Usage: #{$0} options"
      
     
      @options[:output] = STDOUT
      opts.on( '--output FILE', 'Send all recieved data to FILE (defaults to STDOUT)') do |file|
        @options[:output] = File.new(file, 'a+')
      end
     
      @options[:hosts] = []
      opts.on( '--host HOST', 'Host to connect to via SSH' ) do |host|
        @options[:hosts] << host
      end

      @options[:files] = []
      opts.on( '--file FILE', 'File to tail' ) do |file|
        @options[:files] << file
      end

      @options[:log_level] = Logger::INFO
      opts.on( '--log-level LEVEL', 'Logging level' ) do|level|
        @options[:log_level] = Logger.const_get level.upcase
      end

      opts.on( '-V', '--version', 'Display version information' ) do
        puts "Tailer #{Tailer::VERSION}"
        puts "Copyright (C) 2012 Erik Osterman <[email protected]>"
        puts "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>"
        puts "This is free software: you are free to change and redistribute it."
        puts "There is NO WARRANTY, to the extent permitted by law."
        exit
      end

      opts.on( '-h', '--help', 'Display this screen' ) do
        puts opts
        exit
      end
    end

    @optparse.parse!

    raise MissingArgumentException.new("Missing --host argument") if @options[:hosts].length == 0
    raise MissingArgumentException.new("Missing --file argument") if @options[:files].length == 0

    @listener = Listener.new(@options)
  rescue MissingArgumentException => e
    puts e.message
    puts @optparse
    exit (1)
  end
end

Instance Attribute Details

#downloader ⇒ Object

Returns the value of attribute downloader.



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# File 'lib/tailer/command_line.rb', line 27

def downloader
  @downloader
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/tailer/command_line.rb', line 83

def execute
  @listener.execute
end