Class: Central::Cli::Apps::CentralYmlGenerator

Inherits:
Object
  • Object
show all
Includes:
Common
Defined in:
lib/central/cli/apps/central_yml_generator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Common

#app_json, #current_dir, #extend_env_vars, #extend_options, #extend_secrets, #load_services, #normalize_env_vars, #parse_services, #prefixed_name, #require_config_file, #service_exists?, #token, #valid_addons

Methods included from Services::ServicesHelper

#create_service, #delete_service, #deploy_service, #get_service, #int_to_filesize, #parse_image, #parse_links, #parse_log_opts, #parse_memory, #parse_ports, #parse_relative_time, #parse_secrets, #parse_service_id, #restart_service, #scale_service, #show_service, #start_service, #stop_service, #update_service, #wait_for_deploy_to_finish

Methods included from Common

#access_token=, #add_master, #api_url, #api_url=, #clear_current_stack, #client, #current_master, #current_master=, #current_master_index, #current_stack, #current_stack=, #ensure_custom_ssl_ca, #require_api_url, #require_current_stack, #require_token, #reset_client, #save_settings, #settings, #settings_filename

Constructor Details

#initialize(image_name, service_prefix) ⇒ CentralYmlGenerator

Returns a new instance of CentralYmlGenerator.



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# File 'lib/central/cli/apps/central_yml_generator.rb', line 10

def initialize(image_name, service_prefix)
  @image_name = image_name
  @service_prefix = service_prefix
end

Instance Attribute Details

#image_name ⇒ Object (readonly)

Returns the value of attribute image_name.



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# File 'lib/central/cli/apps/central_yml_generator.rb', line 8

def image_name
  @image_name
end

#service_prefix ⇒ Object (readonly)

Returns the value of attribute service_prefix.



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# File 'lib/central/cli/apps/central_yml_generator.rb', line 8

def service_prefix
  @service_prefix
end

Instance Method Details

#create_yml(services, filename) ⇒ Object 



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# File 'lib/central/cli/apps/central_yml_generator.rb', line 76

def create_yml(services, filename)
  if File.exist?(filename)
    central_services = YAML.load(File.read(filename))
    services.each do |name, _options|
      if central_services[name]
        services[name].merge!(central_services[name])
      end
    end
  end
  super(services, filename)
end

#generate(procfile, addons, env_file) ⇒ Object 



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# File 'lib/central/cli/apps/central_yml_generator.rb', line 44

def generate(procfile, addons, env_file)
  image = image_name || "registry.central.local/#{File.basename(Dir.getwd)}:latest"
  if procfile.keys.size > 0
    # generate services found in Procfile
    services = {}
    procfile.keys.each do |name|
      services[name] = { 'image' => image }
      services[name]['environment'] = ['PORT=5000'] if app_json && name == 'web' # Heroku generates PORT env variable so should we do too
      services[name]['command'] = "/start #{name}" if name != 'web'
      services[name]['env_file'] = env_file if env_file

      # generate addon services
      addons.each do |addon|
        addon_service = addon.split(':')[0]
        addon_service.slice!('heroku-')
        next unless valid_addons.key?(addon_service)
        services[name]['links'] ||= []
        services[name]['links'] << "#{addon_service}:#{addon_service}"
        services[name]['environment'] ||= []
        services[name]['environment'] += valid_addons(service_prefix)[addon_service]['environment']
        services[addon_service] = { 'image' => valid_addons[addon_service]['image'], 'stateful' => true }
      end
    end
  else
    # no Procfile found, create dummy web service
    services = { 'web' => { 'image' => image } }
    services['web']['env_file'] = env_file if env_file
  end
  # create central.yml file
  create_yml(services, 'central.yml')
end

#generate_from_compose_file(docker_compose_file) ⇒ Object 



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# File 'lib/central/cli/apps/central_yml_generator.rb', line 15

def generate_from_compose_file(docker_compose_file)
  services = {}
  # extend services from docker-compose.yml
  file = File.read(docker_compose_file)
  compose_services = YAML.load(file)
  compose_services.each do |name, options|
    services[name] = { 'extends' => { 'file' => 'docker-compose.yml', 'service' => name } }
    if options.key?('build')
      image = image_name || "registry.central.local/#{File.basename(Dir.getwd)}:latest"
      services[name]['image'] = image
    end

    # set Heroku addon service as stateful by default
    services[name]['stateful'] = true if valid_addons.key?(name)

    # we have to generate Central urls to env vars for Heroku addons
    # redis://openredis:6379 -> redis://project-name-openredis:6379
    next unless options['links']
    options['links'].each do |link|
      service_link = link.split(':').first
      if valid_addons.key?(service_link)
        services[name]['environment'] ||= []
        services[name]['environment'] += valid_addons(service_prefix)[service_link]['environment']
      end
    end
  end
  create_yml(services, 'central.yml')
end