Class: Minke::Tasks::Task

Inherits:
Object
  • Object
show all
Defined in:
lib/minke/tasks/task.rb

Overview

Task is a base implementation of a rake task such as fetch, build, etc

Direct Known Subclasses

Build, BuildImage, Cucumber, Fetch, Push, Run, Shell, Test

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Task

Returns a new instance of Task.



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# File 'lib/minke/tasks/task.rb', line 7

def initialize args
  @config                 = args[:config]
  @task_name              = args[:task_name]
  @docker_runner          = args[:docker_runner]
  @task_runner            = args[:task_runner]
  @shell_helper           = args[:shell_helper]
  @logger                 = args[:logger_helper]
  @generator_config       = args[:generator_config]
  @docker_compose_factory = args[:docker_compose_factory]
  @consul                 = args[:consul]
  @docker_network         = args[:docker_network]
  @health_check           = args[:health_check]
  @service_discovery      = args[:service_discovery]
  @task_settings          = @config.send(@task_name)
end

Instance Method Details

#create_container_image ⇒ Object

Pulls the build image for the container from the registry if one is supplied, if a build file is specified an image is built.



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# File 'lib/minke/tasks/task.rb', line 112

def create_container_image
  build_image = @generator_config.build_settings.docker_settings.image
  build_image = @config.build_image_for(@task_name) unless @config.build_image_for(@task_name) == nil

  build_file = @config.build_docker_file_for(@task_name)

  if build_file != nil
    build_image = "#{@config.application_name}-buildimage"
    
    @logger.debug "Building image: #{build_image} from file #{build_file}"
    @docker_runner.build_image build_file, build_image
  else
    if (@docker_runner.find_image build_image) == nil
      @logger.debug "Pulling image: #{build_image}"
      @docker_runner.pull_image build_image         
    end
  end

  build_image
end

#create_working_directory ⇒ Object 



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# File 'lib/minke/tasks/task.rb', line 133

def create_working_directory
  base_path = @generator_config.build_settings.docker_settings.working_directory
  override_path = @task_settings.docker.working_directory unless @task_settings.docker == nil

  if override_path != nil
    path = Pathname.new(base_path)
    return (path + override_path).to_s
  else 
    return base_path
  end
end

#run_command_in_container(command, blocking = false, links = nil, ports = nil) ⇒ Object

runs the given command in a docker container



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# File 'lib/minke/tasks/task.rb', line 66

def run_command_in_container(command, blocking = false, links = nil, ports = nil)
  begin
    @logger.info "Running command: #{command}"
    settings          = @generator_config.build_settings.docker_settings
    volumes           = settings.binds.clone unless settings.binds == nil
    environment       = settings.env.clone unless settings.env == nil
    build_image       = create_container_image
    working_directory = create_working_directory

    if ENV['AGENT_SOCK'] != nil
      volumes.push "#{ENV['AGENT_SOCK']}:/ssh-agent"
      environment.push "SSH_AUTH_SOCK=/ssh-agent"
      environment.push "GIT_SSH_COMMAND=ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"
    end

    if @task_settings.consul_loader != nil && links != nil
      links.push "consul"
    end


    args = {
      :image             => build_image,
      :command           => command,
      :volumes           => volumes,
      :environment       => environment,
      :working_directory => working_directory,
      :links             => links,
      :ports             => ports,
    }

    if blocking == false
      container, success = @docker_runner.create_and_run_container args
    else 
      container, success = @docker_runner.create_and_run_blocking_container args
    end

    # throw exception if failed
    raise "Unable to run command #{command}" unless success
  ensure
    @docker_runner.delete_container container
  end
end

#run_with_block ⇒ Object

run_with_config executes the task steps for the given

  • block containing custom actions



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# File 'lib/minke/tasks/task.rb', line 26

def run_with_block
  success = true

  begin
    @docker_network.create
    @consul.start_and_load_data @task_settings.consul_loader unless @task_settings.consul_loader == nil
    
    pre_func = -> {
      @task_runner.run_steps(@task_settings.pre) unless @task_settings == nil || @task_settings.pre == nil
    }

    post_func = -> {
      @task_runner.run_steps(@task_settings.post) unless @task_settings == nil || @task_settings.post == nil
    } 
    
    if block_given?
      yield(pre_func, post_func)
    else
      pre_func.call
      post_func.call
    end
  rescue Exception => e
    @logger.error e.message
    success = false
  ensure
    @consul.stop unless @task_settings.consul_loader == nil
    begin
      @docker_network.remove
    rescue Exception => e
      # Trap removing a network as minke may have been called with an existing network and containers
      # may still be attached.
      @logger.error e.message
    end
  end

  abort unless success
end