Class: Minke::Docker::DockerRunner

Inherits:
Object
  • Object
show all
Defined in:
lib/minke/docker/docker_runner.rb

Instance Method Summary collapse

Instance Method Details

#build_image(dockerfile_dir, name) ⇒ Object

build_image creates a new image from the given Dockerfile and name



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# File 'lib/minke/docker/docker_runner.rb', line 100

def build_image dockerfile_dir, name
  ::Docker.options = {:read_timeout => 6200}
  begin
    ::Docker::Image.build_from_dir(dockerfile_dir, {:t => name}) do |v|
      data = /{"stream.*:"(.*)".*/.match(v)
      data = data[1].encode(Encoding.find('UTF-8'), {invalid: :replace, undef: :replace, replace: ''}) unless data == nil || data.length < 1
      $stdout.puts data unless data == nil
    end
  rescue => e
    message = /.*{"message":"(.*?)"}/.match(e.to_s)
    puts "Error: #{message[1]}" unless message == nil || message.length < 1
  end
end

#create_and_run_container(image, volumes, environment, working_directory, cmd) ⇒ Object

create_and_run_container starts a conatainer of the given image name and executes a command

Returns:

  • Docker::Container

  • sucess (true if command succeded without error)



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# File 'lib/minke/docker/docker_runner.rb', line 61

def create_and_run_container image, volumes, environment, working_directory, cmd
	# update the timeout for the Excon Http Client
	# set the chunk size to enable streaming of log files
  #puts working_directory
  puts volumes
  #puts environment

  ::Docker.options = {:chunk_size => 1, :read_timeout => 3600}
  container = ::Docker::Container.create(
		'Image' => image,
		'Cmd' => cmd,
		"Binds" => volumes,
		"Env" => environment,
		'WorkingDir' => working_directory)

  success = true

  thread = Thread.new do
    container.attach(:stream => true, :stdin => nil, :stdout => true, :stderr => true, :logs => false, :tty => false) do
       |stream, chunk|
        stream.to_s == 'stdout' ? color = :green : color  = :red
        puts "#{chunk.strip}".colorize(color)

        if stream.to_s == "stderr"
          success = false
        else
          success = true
        end
    end
  end

  container.start
  thread.join

	return container, success
end

#delete_container(container) ⇒ Object 



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# File 'lib/minke/docker/docker_runner.rb', line 114

def delete_container container
  if container != nil
    begin
      container.delete()
    rescue => e
      puts "Error: Unable to delete container"
    end
  end
end

#docker_version ⇒ Object 



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# File 'lib/minke/docker/docker_runner.rb', line 144

def docker_version
  ::Docker.version['Version']
end

#find_image(image_name) ⇒ Object

find_image finds a docker image in the local registry Returns

Docker::Image



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# File 'lib/minke/docker/docker_runner.rb', line 29

def find_image image_name
	found = nil
	::Docker::Image.all.each do | image |
		found = image if image.info["RepoTags"].include? image_name
	end

	return found
end

#get_docker_ip_address ⇒ Object

returns the ip address that docker is running on



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# File 'lib/minke/docker/docker_runner.rb', line 6

def get_docker_ip_address
  # first try to get the ip from docker-ip env
  if !ENV['DOCKER_IP'].to_s.empty?
    return ENV['DOCKER_IP']
  end

  if !ENV['DOCKER_HOST'].to_s.empty?
		# dockerhost set
		host = ENV['DOCKER_HOST'].dup
		host.gsub!(/tcp:\/\//, '')
		host.gsub!(/:\d+/,'')

		return host
  else
    return '127.0.0.1'
	end
end

#login_registry(url, user, password, email) ⇒ Object 



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# File 'lib/minke/docker/docker_runner.rb', line 124

def  url, user, password, email
  if docker_version.start_with? '1.11'
    # email is removed for login in docker 1.11
    system("docker login -u #{user} -p #{password} #{url}")
  else
    system("docker login -u #{user} -p #{password} -e #{email} #{url}")
  end
  $?.exitstatus
end

#pull_image(image_name) ⇒ Object

pull_image pulls a new copy of the given image from the registry



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# File 'lib/minke/docker/docker_runner.rb', line 40

def pull_image image_name
	puts "Pulling Image: #{image_name}"
  ::Docker::Image.create('fromImage' => image_name)
end

#push_image(image_name) ⇒ Object 



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# File 'lib/minke/docker/docker_runner.rb', line 139

def push_image image_name
	system("docker push #{image_name}:latest")
  $?.exitstatus ==  0
end

#running_containers ⇒ Object

running_images returns a list of running containers Returns

Array of Docker::Image



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# File 'lib/minke/docker/docker_runner.rb', line 50

def running_containers
  containers = ::Docker::Container.all(all: true, filters: { status: ["running"] }.to_json)
  return containers
end

#tag_image(image_name, tag) ⇒ Object 



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# File 'lib/minke/docker/docker_runner.rb', line 134

def tag_image image_name, tag
  image =  self.find_image "#{image_name}:latest"
	image.tag('repo' => tag, 'force' => true) unless image.info["RepoTags"].include? "#{tag}:latest"
end