Class: SmartMachine::Apps::Container

Inherits:
Base
  • Object
show all
Defined in:
lib/smart_machine/apps/container.rb

Instance Method Summary collapse

Methods inherited from Base

#machine_has_engine_installed?, #platform_on_machine?, #user_bash

Methods included from Logger

configure_logger_for, included, #logger, logger_for

Constructor Details

#initialize(name:, appname:, appversion:) ⇒ Container

Returns a new instance of Container.



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# File 'lib/smart_machine/apps/container.rb', line 4

def initialize(name:, appname:, appversion:)
  @name = name
  @appname = appname
  @appversion = appversion
  @appimage = "smartmachine/apps/#{@appname}:#{@appversion}"

  @home_dir = File.expand_path('~')
end

Instance Method Details

#commit_app_image! ⇒ Object 



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# File 'lib/smart_machine/apps/container.rb', line 98

def commit_app_image!
  if create!(using_command: "smartmachine buildpacker packer rails", using_buildpacker: true)
    logger.debug "-----> Starting attached container #{@name} ... "
    if system("docker start --attach #{@name}")
      logger.debug "-----> Committing container #{@name} to image... "
      if system("docker commit #{@name} #{@appimage}", out: File::NULL)
        stop!
        return true
      else
        stop!
        raise "Error: Could not commit #{@name} container to image."
      end
    else
      stop!
      raise "Error: Could not start attached #{@name} container"
    end
  else
    raise "Error: Could not create #{@name} container"
  end

  return false
end

#connect_to_network!(network_name:) ⇒ Object 



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# File 'lib/smart_machine/apps/container.rb', line 83

def connect_to_network!(network_name:)
  unless `docker network ls -q --filter name=^#{network_name}$`.chomp.empty?
    if system("docker network connect #{network_name} #{@name}", out: File::NULL)
      logger.debug "Connected to network #{network_name}."
      return true
    else
      raise "Error: Could not connect to #{network_name} network."
    end
  else
    raise "Error: The network with name #{network_name} was not found."
  end

  return false
end

#create!(using_command:, using_buildpacker: false) ⇒ Object 



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# File 'lib/smart_machine/apps/container.rb', line 13

def create!(using_command:, using_buildpacker: false)
  unless using_buildpacker
    unless system("docker image inspect #{@appimage}", [:out, :err] => File::NULL)
      raise "Error: App Image with name #{@appimage} not found. Could not create #{@name} container."
    end
  end

  logger.debug "-----> Creating container #{@name} ... "
  command = [
    "docker create",
    "--name='#{@name}'",
    "--env-file='#{@home_dir}/machine/apps/containers/#{@appname}/env'",
    "--user `id -u`:`id -g`",
    "--workdir /app",
    "--expose='3000'",
    "--volume='#{@home_dir}/smartmachine/config/environment.rb:#{@home_dir}/machine/config/environment.rb'",
    "--volume='#{@home_dir}/smartmachine/apps/containers/#{@appname}/asdf:#{@home_dir}/.asdf'",
    "--volume='#{@home_dir}/smartmachine/apps/containers/#{@appname}/releases/#{@appversion}:/app'",
    "--volume='#{@home_dir}/smartmachine/apps/containers/#{@appname}/app/vendor/bundle:/app/vendor/bundle'",
    "--volume='#{@home_dir}/smartmachine/apps/containers/#{@appname}/app/public/assets:/app/public/assets'",
    "--volume='#{@home_dir}/smartmachine/apps/containers/#{@appname}/app/public/packs:/app/public/packs'",
    "--volume='#{@home_dir}/smartmachine/apps/containers/#{@appname}/app/node_modules:/app/node_modules'",
    "--volume='#{@home_dir}/smartmachine/apps/containers/#{@appname}/app/storage:/app/storage'",
    (using_buildpacker ? "--cpus=1 --memory=512m --memory-swap=1024m" : nil),
    "--restart='always'",
    "--init",
    # "--network='nginx-network'",
    (using_buildpacker ? "smartmachine/buildpackers/rails:#{SmartMachine.version}" : @appimage)
  ]
  command.push(using_command) if using_command.present?

  if system(command.compact.join(" "), out: File::NULL)
    logger.debug "done"
    return true
  else
    raise "Error: Could not create #{@name} container"
  end

  return false
end

#start! ⇒ Object 



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# File 'lib/smart_machine/apps/container.rb', line 54

def start!
  logger.debug "-----> Starting container #{@name} ... "
  if system("docker start #{@name}", out: File::NULL)
    logger.debug "done"
    return true
  else
    raise "Error: Could not start #{@name} container"
  end

  return false
end

#stop! ⇒ Object 



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# File 'lib/smart_machine/apps/container.rb', line 66

def stop!
  container_id = `docker ps -a -q --filter='name=^#{@name}$'`.chomp
  unless container_id.empty?
    logger.debug "Stopping & Removing container #{@name} ..."
    if system("docker stop #{@name} && docker rm #{@name}", out: File::NULL)
      logger.debug "Stopped & Removed container #{@name} ..."
      return true
    else
      raise "Error: Container '#{@name}' could not be stopped and removed."
    end
  else
    raise "Error: Container '#{@name}' does not exist to stop."
  end

  return false
end