Class: Rubicante::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/rubicante/cli.rb

Overview

A command-line interface for Rubicante

Instance Method Summary collapse

Constructor Details

#initialize(debug = false) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/rubicante/cli.rb', line 8

def initialize(debug = false)
  # Set up the logger for this CLI session
  @log = Logging::Logger['rubicante']
  @log.add_appenders(Logging::Appender.stdout)
  @log.level = debug ? :debug : :info

  # Set up logger for Environment
  Logging::Appender['rubicante'] = Logging::Appender.stdout
  Logging::Logger['Rubicante::Environment'].add_appenders(Logging::Appender['rubicante'])
  Logging::Logger['Rubicante::Environment'].level = @log.level

  # Prepare Environment
  @env = Environment.new
end

Instance Method Details

#handle(cmd) ⇒ Object

Handles sending the command to the Environment and dealing with any return values that require output to the user



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# File 'lib/rubicante/cli.rb', line 69

def handle(cmd)
  exit if cmd == "exit"

  begin
    result = @env.eval_command(cmd)
  rescue NotImplementedError
    @log.error "Unrecognized command '#{cmd.split[0]}'."
  end

  # 'what' commands return Arrays
  if result.kind_of? Array
    result.each do |response|
      process(response)
    end
  end
end

#load(file) ⇒ Object

Load in a file, executing each line



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# File 'lib/rubicante/cli.rb', line 62

def load(file)
  cmds = File.new(file)
  cmds.each_line { |cmd| handle(cmd) }
end

#process(resp) ⇒ Object 



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# File 'lib/rubicante/cli.rb', line 23

def process(resp)
  if resp.kind_of? HostError
    process_host_error(resp)
  end
end

#process_host_error(resp) ⇒ Object 



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# File 'lib/rubicante/cli.rb', line 29

def process_host_error(resp)
  if not resp.ping
    puts_error(resp.hostname, "is unreachable.")
  else
    process_port_errors(resp)
    process_service_errors(resp)
    process_website_errors(resp)
  end
end

#process_port_errors(resp) ⇒ Object 



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# File 'lib/rubicante/cli.rb', line 39

def process_port_errors(resp)
  resp.bad_ports.each do |bad_port|
    puts_error(resp.hostname, "port #{bad_port} is closed.")
  end
end

#process_service_errors(resp) ⇒ Object 



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# File 'lib/rubicante/cli.rb', line 45

def process_service_errors(resp)
  resp.bad_services.each do |bad_service|
    puts_error(resp.hostname, "service #{bad_service} is stopped.")
  end
end

#process_website_errors(resp) ⇒ Object 



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# File 'lib/rubicante/cli.rb', line 51

def process_website_errors(resp)
  resp.website_errors.each do |website_error|
    puts_error(resp.hostname, "is returning code #{website_error.code} for website #{website_error.url}.")
  end
end

#puts_error(hostname, error) ⇒ Object 



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# File 'lib/rubicante/cli.rb', line 57

def puts_error(hostname, error)
  @log.info "[#{hostname}] #{error}"
end

#run ⇒ Object 



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# File 'lib/rubicante/cli.rb', line 86

def run
  while true do
    print 'rubicante> '

    cmd = gets.downcase.strip

    handle(cmd)
  end
end