Class: InitializeProject

Inherits:
Object
  • Object
show all
Defined in:
lib/support/initialize_project.rb

Instance Method Summary collapse

Instance Method Details

#app_docker_path ⇒ Object 



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# File 'lib/support/initialize_project.rb', line 4

def app_docker_path
  project_dir = FileUtils.pwd
  docker_dir = "#{project_dir}/docker"
  FileUtils.mkdir_p("#{docker_dir}/files")
  return docker_dir
end

#create_configuration ⇒ Object 



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# File 'lib/support/initialize_project.rb', line 26

def create_configuration
  #Use directory name as default for image name.
  default_image_name = FileUtils.pwd.split('/').last
  default_image_name = default_image_name.split('_').join("-")
  default_image_name = default_image_name.split(' ').join("-")
  
  puts "Creating configurations."
  puts "Enter image name of rails app (#{default_image_name}):"
  image_name = STDIN.gets.chomp
  if (image_name.length == 0)
    image_name = default_image_name
  end
  
  db_run_time_name = image_name + "-db"
  
  docker_dir = app_docker_path()
  FileUtils.mkdir_p("#{docker_dir}/files")
  
  this_dir = File.dirname(__FILE__)
  docker_file_path = "#{docker_dir}/Dockerfile"
  copy_docker_file = true
  if (File.exist?(docker_file_path))
    puts "Dockerfile already exists in #{docker_dir}.  Overwrite? (y/n)"
    overwrite = STDIN.gets.chomp
    if (overwrite.downcase == "n")
      copy_docker_file = false
    end
  end
  
  if (copy_docker_file)
    FileUtils.cp("#{this_dir}/image_files/DockerfileSelf", docker_file_path)
    fill_in_file_param(docker_file_path, 'SQL_HOST', db_run_time_name)
    puts "Copied standard Dockerfile to: #{docker_dir}"
  end
  
  
  copy_entry_file = true
  entry_file_path = "#{docker_dir}/entrypoint.sh"
  if (File.exist?(entry_file_path))
    puts "Entrypoint.sh already exists in #{docker_dir}.  Overwrite? (y/n)"
    overwrite = STDIN.gets.chomp
    if (overwrite.downcase == "n")
      copy_entry_file = false
    end
  end
  
  if (copy_entry_file)
    FileUtils.cp("#{this_dir}/image_files/entrypoint.sh", "#{docker_dir}/entrypoint.sh")
    puts "Copied entry point file to: #{docker_dir}"
  end

  FileUtils.cp("#{this_dir}/image_files/wait_for_port.sh", "#{docker_dir}/wait_for_port.sh")
  
  
  main_configuration = {
    registry: "https://my.registry.com:5000",
    build: {
      name: image_name
    },
    run: {
      name: image_name,
      options: {
        "Env" => [
          "IS_DOCKER=true"
        ],
        "HostConfig" => {
          "Links" => ["#{db_run_time_name}:#{db_run_time_name}"],
          "PortBindings" => {
            "3000/tcp" => [
                    {"HostIp" => "", "HostPort" => "3000"}
            ]
          }
        }
      }
    }
  }
  
  sql_configuration = {
    run: {
      name: db_run_time_name,
      image_name: "percona:5.6",
      options: {
        "Env" => [
          "MYSQL_ROOT_PASSWORD=password"
        ],
        "HostConfig" => {
          "PortBindings" => {
            "3306/tcp" => []
          }
        }
      }
    }
  }
  
  
  configs = [{sql: sql_configuration}, {rails_app: main_configuration}]
  
  output = JSON.pretty_generate(configs)
  config_file_path = "#{app_docker_path}/docker-rails.json"
  File.open(config_file_path, "w") do |f|
    f.write(output)
  end
  
end

#fill_in_file_param(file_path, param_name, param_value) ⇒ Object 



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# File 'lib/support/initialize_project.rb', line 11

def fill_in_file_param(file_path, param_name, param_value)
  new_content = nil
  File.open(file_path, "r") do |file|
    content = file.read
    search_str = "<<#{param_name}>>"
    index = content.index(search_str)
    content_start = content[0..(index - 1)]
    content_end = content[(index + search_str.length), content.length]
    new_content = content_start + param_value + content_end
  end
  File.open(file_path, "w") do |file|
    file.write(new_content)
  end
end