Class: Sensu::CLI

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

Class Method Summary collapse

Class Method Details

.read(arguments = ARGV) ⇒ Hash

Parse CLI arguments using Ruby stdlib ‘optparse`. This method provides Sensu with process options (eg. log file), and can provide users with information, such as the Sensu version.



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# File 'lib/sensu/cli.rb', line 12

def self.read(arguments=ARGV)
  options = {}
  if File.exist?("/etc/sensu/config.json")
    options[:config_file] = "/etc/sensu/config.json"
  end
  if Dir.exist?("/etc/sensu/conf.d")
    options[:config_dirs] = ["/etc/sensu/conf.d"]
  end
  optparse = OptionParser.new do |opts|
    opts.on("-h", "--help", "Display this message") do
      puts opts
      exit
    end
    opts.on("-V", "--version", "Display version") do
      puts VERSION
      exit
    end
    opts.on("-c", "--config FILE", "Sensu JSON config FILE. Default: /etc/sensu/config.json (if exists)") do |file|
      options[:config_file] = file
    end
    opts.on("-d", "--config_dir DIR[,DIR]", "DIR or comma-delimited DIR list for Sensu JSON config files. Default: /etc/sensu/conf.d (if exists)") do |dir|
      options[:config_dirs] = dir.split(",")
    end
    opts.on("--validate_config", "Validate the compiled configuration and exit") do
      options[:validate_config] = true
    end
    opts.on("-P", "--print_config", "Print the compiled configuration and exit") do
      options[:print_config] = true
    end
    opts.on("-e", "--extension_dir DIR", "DIR for Sensu extensions") do |dir|
      options[:extension_dir] = dir
    end
    opts.on("-l", "--log FILE", "Log to a given FILE. Default: STDOUT") do |file|
      options[:log_file] = file
    end
    opts.on("-L", "--log_level LEVEL", "Log severity LEVEL") do |level|
      log_level = level.to_s.downcase.to_sym
      unless Logger::LEVELS.include?(log_level)
        puts "Unknown log level: #{level}"
        exit 1
      end
      options[:log_level] = log_level
    end
    opts.on("-v", "--verbose", "Enable verbose logging") do
      options[:log_level] = :debug
    end
    opts.on("-b", "--background", "Fork into the background") do
      options[:daemonize] = true
    end
    opts.on("-p", "--pid_file FILE", "Write the PID to a given FILE") do |file|
      options[:pid_file] = file
    end
  end
  optparse.parse!(arguments)
  options
end