Class: GrafanaReporter::Application::Application

Inherits:
Object
  • Object
show all
Defined in:
lib/grafana_reporter/application/application.rb

Overview

This class contains the main application to run the grafana reporter.

It can be run to test the grafana connection, render a single template or run as a service.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Application

Returns a new instance of Application.


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# File 'lib/grafana_reporter/application/application.rb', line 22

def initialize
  @config = Configuration.new
  @webservice = Webservice.new
end

Instance Attribute Details

#config ⇒ Object

Contains the Configuration object of the application.


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# File 'lib/grafana_reporter/application/application.rb', line 17

def config
  @config
end

#webservice ⇒ Object (readonly)

Stores the Webservice object of the application


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# File 'lib/grafana_reporter/application/application.rb', line 20

def webservice
  @webservice
end

Instance Method Details

#configure_and_run(params = []) ⇒ Integer

This is the main method, which is called, if the application is run in standalone mode.

Parameters:

  • params (Array<String>) (defaults to: []) —

    command line parameters, mainly ARGV can be used.

Returns:

  • (Integer) —

    0 if everything is fine, -1 if execution aborted.


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# File 'lib/grafana_reporter/application/application.rb', line 31

def configure_and_run(params = [])
  config_file = Configuration::DEFAULT_CONFIG_FILE_NAME
  tmp_config = Configuration.new
  action_wizard = false

  parser = OptionParser.new do |opts|
    opts.banner = if ENV['OCRA_EXECUTABLE']
                    "Usage: #{ENV['OCRA_EXECUTABLE'].gsub("#{Dir.pwd}/".gsub('/', '\\'), '')} [options]"
                  else
                    "Usage: #{Gem.ruby} #{$PROGRAM_NAME} [options]"
                  end

    opts.on('-c', '--config CONFIG_FILE_NAME', 'Specify custom configuration file,'\
            " instead of #{Configuration::DEFAULT_CONFIG_FILE_NAME}.") do |file_name|
      config_file = file_name
    end

    opts.on('-r', '--register FILE', 'Register a custom plugin, e.g. your own Datasource implementation') do |plugin|
      require plugin
    end

    opts.on('-d', '--debug LEVEL', 'Specify detail level: FATAL, ERROR, WARN, INFO, DEBUG.') do |level|
      tmp_config.set_param('grafana-reporter:debug-level', level)
    end

    opts.on('-o', '--output FILE', 'Output filename if only a single file is rendered') do |file|
      tmp_config.set_param('to_file', file)
    end

    opts.on('-s', '--set VARIABLE,VALUE', Array, 'Set a variable value, which will be passed to the '\
            'rendering') do |list|
      raise ParameterValueError, list.length unless list.length == 2

      tmp_config.set_param("default-document-attributes:#{list[0]}", list[1])
    end

    opts.on('--ssl-cert FILE', 'Manually specify a SSL cert file for HTTPS connection to grafana. Only '\
            'needed if not working properly otherwise.') do |file|
      if File.file?(file)
        tmp_config.set_param('grafana-reporter:ssl-cert', file)
      else
        config.logger.warn("SSL certificate file #{file} does not exist. Setting will be ignored.")
      end
    end

    opts.on('--test GRAFANA_INSTANCE', 'test current configuration against given GRAFANA_INSTANCE') do |instance|
      tmp_config.set_param('grafana-reporter:run-mode', 'test')
      tmp_config.set_param('grafana-reporter:test-instance', instance)
    end

    opts.on('-t', '--template TEMPLATE', 'Render a single ASCIIDOC template to PDF and exit') do |template|
      tmp_config.set_param('grafana-reporter:run-mode', 'single-render')
      tmp_config.set_param('default-document-attributes:var-template', template)
    end

    opts.on('-w', '--wizard', 'Configuration wizard to prepare environment for the reporter.') do
      action_wizard = true
    end

    opts.on('-v', '--version', 'Version information') do
      puts GRAFANA_REPORTER_VERSION.join('.')
      return -1
    end

    opts.on('-h', '--help', 'Show this message') do
      puts opts
      return -1
    end
  end

  begin
    parser.parse!(params)
    return ConsoleConfigurationWizard.new.start_wizard(config_file, tmp_config) if action_wizard
  rescue ApplicationError => e
    puts e.message
    return -1
  end

  # abort if config file does not exist
  unless File.file?(config_file)
    puts "Config file '#{config_file}' does not exist. Consider calling the configuration wizard"\
         ' with option \'-w\' or use \'-h\' to see help message. Aborting.'
    return -1
  end

  # merge command line configuration with read config file
  @config.load_config_from_file(config_file)
  @config.merge!(tmp_config)

  run
end

#run ⇒ Integer

Runs the application with the current set Configuration object.

Returns:

  • (Integer) —

    value smaller than 0, if error. 0 if successfull


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# File 'lib/grafana_reporter/application/application.rb', line 125

def run
  begin
    config.validate
  rescue ConfigurationError => e
    puts e.message
    return -2
  end

  case config.mode
  when Configuration::MODE_CONNECTION_TEST
    res = Grafana::Grafana.new(config.grafana_host(config.test_instance),
                               config.grafana_api_key(config.test_instance),
                               logger: config.logger).test_connection
    puts res

  when Configuration::MODE_SINGLE_RENDER
    begin
      template_ext = config.report_class.default_template_extension
      report_ext = config.report_class.default_result_extension
      default_to_file = File.basename(config.template.to_s.gsub(/(?:\.#{template_ext})?$/, ".#{report_ext}"))

      to_file = config.to_file
      to_file = "#{config.reports_folder}#{default_to_file}" if to_file == true
      config.report_class.new(config).create_report(config.template, to_file)
    rescue StandardError => e
      puts "#{e.message}\n#{e.backtrace.join("\n")}"
    end

  when Configuration::MODE_SERVICE
    @webservice.run(config)
  end

  0
end