Class: TemplateConfigurator::Service

Inherits:
Object
  • Object
show all
Defined in:
lib/template_configurator/service.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Service 



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# File 'lib/template_configurator/service.rb', line 36

def initialize options
  @options = options
end

Instance Attribute Details

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/template_configurator/service.rb', line 35

def options
  @options
end

Instance Method Details

#command(action) ⇒ Object 



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# File 'lib/template_configurator/service.rb', line 40

def command action
  args = []
  args << @options[:command]
  args << @options[:name]
  args << action
  TemplateConfigurator.log.debug("command args: #{args.inspect}")
  Shellwords.join(args)
end

#conditional_reload ⇒ Object 



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# File 'lib/template_configurator/service.rb', line 81

def conditional_reload
  # Attempt to reload service if it's running, otherwise start it.
  @options[:retries].times do 
    begin
      status_output = self.status
      TemplateConfigurator.log.debug("#{@options[:name]} is running")
      # If the configuration has changed, reload config
      begin 
        reload_output = self.reload
        TemplateConfigurator.log.debug("Reload command succeeded")
        return reload_output
      rescue ServiceException => e
        TemplateConfigurator.log.error(e.message)
        TemplateConfigurator.log.error(e.output) unless e.output.nil?
      end
    rescue ServiceException => e
      # service is not running
      TemplateConfigurator.log.error(e.message)
      TemplateConfigurator.log.error(e.output) unless e.output.nil?
      begin
        start_output = self.start
        TemplateConfigurator.log.debug("Start command succeeded")
        return start_output
      rescue ServiceException => e
        TemplateConfigurator.log.error(e.message)
        TemplateConfigurator.log.error(e.output) unless e.output.nil?
      end
    end
    sleep(@options[:retry_delay])
  end
  # Everything else failed. Try a restart
  return self.restart
end

#execute(command) ⇒ Object 



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# File 'lib/template_configurator/service.rb', line 49

def execute command
  TemplateConfigurator.log.debug("command: #{command}")
  begin
    output = %x{#{command}}
    exit_code = $?.exitstatus
    raise ServiceException.new("execution failed; #{command} exited with status #{exit_code}", exit_code, output) unless exit_code == 0
  rescue Errno::ENOENT => e
    raise ServiceException.new(e.message, 1)
  end
  return output
end

#reload ⇒ Object 



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# File 'lib/template_configurator/service.rb', line 69

def reload
  execute command(@options[:reload])
end

#restart ⇒ Object 



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# File 'lib/template_configurator/service.rb', line 65

def restart
  execute command(@options[:restart])
end

#start ⇒ Object 



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# File 'lib/template_configurator/service.rb', line 73

def start
  execute command(@options[:start])
end

#status ⇒ Object 



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# File 'lib/template_configurator/service.rb', line 61

def status
  execute command(@options[:status])
end

#stop ⇒ Object 



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# File 'lib/template_configurator/service.rb', line 77

def stop
  execute command(@options[:stop])
end