Module: Kubes::Docker::Strategy::ImageName

Extended by:
Memoist
Included in:
Kubes::Docker, Utils
Defined in:
lib/kubes/docker/strategy/image_name.rb

Constant Summary collapse

@@image_name = 
nil
@@timestamp = 
Time.now.strftime('%Y-%m-%dT%H-%M-%S')

Instance Method Summary collapse

Instance Method Details

#args ⇒ Object 



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# File 'lib/kubes/docker/strategy/image_name.rb', line 69

def args
  # base at end in case of redirection. IE: command > /path
  custom.args + default.args
end

#custom ⇒ Object 



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# File 'lib/kubes/docker/strategy/image_name.rb', line 74

def custom
  custom = Kubes::Args::Custom.new(@name, "#{Kubes.root}/.kubes/config/args/docker.rb")
  custom.build
  custom
end

#default ⇒ Object 



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# File 'lib/kubes/docker/strategy/image_name.rb', line 81

def default
  Kubes::Docker::Args::Default.new(@name, image_name, @options)
end

#generate_name ⇒ Object 



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# File 'lib/kubes/docker/strategy/image_name.rb', line 50

def generate_name
  # IE: tongueroo/demo:kubes-
  tag = ENV['KUBES_IMAGE_TAG'] || Kubes.config.image_tag || ["kubes-#{@@timestamp}", git_sha].compact.join('-')
  "#{repo}:#{tag}"
end

#git_sha ⇒ Object 



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# File 'lib/kubes/docker/strategy/image_name.rb', line 60

def git_sha
  return @git_sha if @git_sha
  # always call this and dont use the execute method because of the noop option
  git_installed = system("type git > /dev/null 2>&1")
  return unless git_installed && File.exist?("#{Kubes.root}/.git")
  @git_sha = `cd #{Kubes.root} && git rev-parse --short HEAD`
  @git_sha.strip!
end

#image_name ⇒ Object

full_image - Includes the tag. Examples:

123456789.dkr.ecr.us-west-2.amazonaws.com/myapp:kubes-2018-04-20T09-29-08-b7d51df
tongueroo/demo-kubes:kubes-2018-04-20T09-29-08-b7d51df



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# File 'lib/kubes/docker/strategy/image_name.rb', line 36

def image_name
  return generate_name if @options[:generate]
  return @@image_name if @@image_name
  return "tongueroo/demo-kubes:kubes-12345678" if ENV['TEST']

  unless File.exist?(image_state_path)
    logger.error "ERROR: Unable to find #{image_state_path} which contains the last docker image name built with kubes build.  Please run `kubes docker build` first."
    exit 1
  end
  data = JSON.load(IO.read(image_state_path))
  data['image']
end

#image_state_path ⇒ Object

output can get entirely wiped so dont use that folder



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# File 'lib/kubes/docker/strategy/image_name.rb', line 29

def image_state_path
  Kubes.config.state.path
end

#read_image_name ⇒ Object 



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# File 'lib/kubes/docker/strategy/image_name.rb', line 22

def read_image_name
  return unless File.exist?(image_state_path)
  data = IO.read(image_state_path).strip
  JSON.load(data)['image']
end

#repo ⇒ Object 



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# File 'lib/kubes/docker/strategy/image_name.rb', line 56

def repo
  Kubes.config.repo
end

#reserve_image_name ⇒ Object 



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# File 'lib/kubes/docker/strategy/image_name.rb', line 8

def reserve_image_name
  @@image_name = generate_name
end

#store_image_name ⇒ Object

Store this in a file because this name gets reference in other tasks later and we want the image name to stay the same when the commands are run separate in different processes. So we store the state in a file. Only when a new docker build command gets run will the image name state be updated.



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# File 'lib/kubes/docker/strategy/image_name.rb', line 16

def store_image_name
  FileUtils.mkdir_p(File.dirname(image_state_path))
  text = JSON.pretty_generate(image: @@image_name)
  IO.write(image_state_path, text)
end