Class: Triglav::Agent::Base::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/triglav/agent/base/cli.rb

Overview

A base class for cli option parser

This base class usually should be enough for agent plugins, but you can override this class and configure with Configuration#cli_classe=

Instance Method Summary collapse

Instance Method Details

#default_opts ⇒ Object 



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# File 'lib/triglav/agent/base/cli.rb', line 23

def default_opts
  {
    config: 'config.yml',
    dotenv: false,
    debug: false,
  }
end

#option_parser(opts = {}) ⇒ Object 



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# File 'lib/triglav/agent/base/cli.rb', line 31

def option_parser(opts = {})
  op = OptionParser.new

  self.class.module_eval do
    define_method(:usage) do |msg = nil|
      puts op.to_s
      puts "error: #{msg}" if msg
      exit 1
    end
  end

  op.on('-c', '--config VALUE', "Config file (default: #{opts[:config]})") {|v|
    opts[:config] = v
  }
  op.on('-s', '--status VALUE', "Status stroage file (default: status.yml)") {|v|
    opts[:status] = v
  }
  op.on('-t', '--token VALUE', "Triglav access token storage file (default: token.yml)") {|v|
    opts[:token] = v
  }
  op.on('--dotenv', "Load environment variables from .env file (default: #{opts[:dotenv]})") {|v|
    opts[:dotenv] = v
  }
  op.on('--debug', "Debug mode (default: #{opts[:debug]})") {|v|
    opts[:debug] = v
  }
  op.on('-h', '--help', "help") {|v|
    opts[:help] = v
  }
  # serverengine options
  op.on('--log VALUE', "Log path (default: #{Setting::DEFAULT_LOG})") {|v|
    opts[:log] = v
  }
  op.on('--log-level VALUE', "Log level (default: #{Setting::DEFAULT_LOG_LEVEL})") {|v|
    opts[:log_level] = v
  }

  op.banner += ''

  op
end

#parse_options(argv = ARGV) ⇒ Object 



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# File 'lib/triglav/agent/base/cli.rb', line 73

def parse_options(argv = ARGV)
  opts = default_opts
  op = option_parser(opts)

  begin
    args = op.parse(argv)
  rescue OptionParser::InvalidOption => e
    usage e.message
  end

  if opts[:help]
    usage
  end

  if opts[:config].nil?
    usage "--config VALUE is required"
  end
  if !File.readable?(opts[:config])
    usage "Config file '#{opts[:config]}' does not exist or not readable"
  end

  [opts, args]
end

#run ⇒ Object 



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# File 'lib/triglav/agent/base/cli.rb', line 13

def run
  opts, _ = parse_options(ARGV)
  $setting = Configuration.setting_class.new(opts)
  $logger = $setting.logger
  se = ServerEngine.create(nil, Configuration.worker_module) do
    $setting.serverengine_options
  end
  se.run
end