Class: Indocker::DeployContext

Inherits:
Object
  • Object
show all
Defined in:
lib/indocker/deploy_context.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(logger:, configuration:) ⇒ DeployContext

Returns a new instance of DeployContext.



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# File 'lib/indocker/deploy_context.rb', line 7

def initialize(logger:, configuration:)
  @logger = logger
  @configuration = configuration
  @restart_policy = Indocker::Containers::RestartPolicy.new(configuration, logger)
end

Instance Attribute Details

#configuration ⇒ Object (readonly)

Returns the value of attribute configuration.



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# File 'lib/indocker/deploy_context.rb', line 5

def configuration
  @configuration
end

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/indocker/deploy_context.rb', line 5

def logger
  @logger
end

Instance Method Details

#deploy(container, force_restart) ⇒ Object 



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# File 'lib/indocker/deploy_context.rb', line 13

def deploy(container, force_restart)
  @logger.info("Deploying container: #{container.name.to_s.green}")
  @logger.debug("Deploy dir: #{Indocker.deploy_dir}")

  Indocker::Docker.pull(container.image.registry_url) if !container.image.registry.is_local?

  container.networks.each do |network|
    Indocker::Docker.create_network(
      Indocker::Networks::NetworkHelper.name(@configuration.name, network)
    )
  end

  container.volumes.each do |volume|
    if volume.is_a?(Indocker::Volumes::External)
      Indocker::Docker.create_volume(
        Indocker::Volumes::VolumeHelper.name(@configuration.name, volume)
      )
    end
  end

  container.get_start_option(:scale).times do |number|
    arg_list = Indocker::DockerRunArgs
      .get(container, @configuration, number)
      .join(' ')

    hostname = Indocker::ContainerHelper.hostname(@configuration.name, container, number)

    # timestamp generation
    run_cmd = Indocker::Docker.run_command(container.image.registry_url, arg_list, container.start_command, container.get_start_option(:service_args))

    env_files = container.get_start_option(:env_files, default: [])
      .map { |env_file|
        env_file = @configuration.env_files.fetch(env_file)
        File.read(Indocker::EnvFileHelper.path(env_file))
      }
      .join

    image_id = Indocker::Docker.image_id(container.image.registry_url)
    timestamp = Digest::MD5.hexdigest(run_cmd + image_id.to_s + env_files)

    binary_path = File.join(File.expand_path(Indocker.deploy_dir), 'bin')
    FileUtils.mkdir_p(binary_path)

    binary_path = File.join(binary_path, hostname)

    File.open(binary_path, 'w') { |f|
      f.write("#!/bin/bash\n\n")
      f.write(run_cmd)
    }

    FileUtils.chmod('+x', binary_path)

    container_id = Indocker::Docker.container_id_by_name(hostname)

    if !container_id || @restart_policy.restart?(container, timestamp) || force_restart
      if container.before_start_proc
        container.before_start_proc.call(container, number)
      end

      if container_id
        Indocker::Docker.stop(hostname, skip_errors: true)
      else
        Indocker::Docker.rm(hostname, skip_errors: true)
      end

      Indocker::Docker.run(container.image.registry_url, arg_list, container.start_command, container.get_start_option(:service_args))

      if container.after_start_proc
        container.after_start_proc.call(container, number)
      end

      @restart_policy.update(container, timestamp)
    else
      @logger.info("Skipping restart for container #{container.name.to_s.green} as no changes were found")

      if !container_id
        @restart_policy.update(container, timestamp)
      end
    end

    if container.after_deploy_proc
      container.after_deploy_proc.call(container, number)
    end
  end

  nil
end