Class: DockerImageCreator

Inherits:
Object
  • Object
show all
Defined in:
lib/support/docker_image_creator.rb

Direct Known Subclasses

DockerRailsAppCreator

Constant Summary collapse

REMOVE_INTERMEDIATE_FLAG = 
"--rm=true"
DAEMON_OPTIONS = 
" -d -t -P"
INTERACT_OPTIONS = 
" -a stdin -a stdout -i -t -P"
DOCKER_DIR = 
Dir.pwd + "/lib"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(definition) ⇒ DockerImageCreator

Returns a new instance of DockerImageCreator.



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# File 'lib/support/docker_image_creator.rb', line 15

def initialize(definition)
  raise "Definition is nil" if definition == nil
  @definition = definition
  @home = FileUtils.pwd
  @version = nil
  @docker_host = nil
  @docker_host_secure = nil
end

Instance Attribute Details

#definition ⇒ Object (readonly)

Returns the value of attribute definition.



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# File 'lib/support/docker_image_creator.rb', line 13

def definition
  @definition
end

#docker_host ⇒ Object

Returns the value of attribute docker_host.



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# File 'lib/support/docker_image_creator.rb', line 12

def docker_host
  @docker_host
end

#docker_host_secure ⇒ Object

Returns the value of attribute docker_host_secure.



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# File 'lib/support/docker_image_creator.rb', line 12

def docker_host_secure
  @docker_host_secure
end

#image_name_forced ⇒ Object

Returns the value of attribute image_name_forced.



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# File 'lib/support/docker_image_creator.rb', line 12

def image_name_forced
  @image_name_forced
end

#use_date_as_version ⇒ Object

Returns the value of attribute use_date_as_version.



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# File 'lib/support/docker_image_creator.rb', line 5

def use_date_as_version
  @use_date_as_version
end

#version_forced ⇒ Object

Returns the value of attribute version_forced.



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# File 'lib/support/docker_image_creator.rb', line 12

def version_forced
  @version_forced
end

Instance Method Details

#add_it(host, host_ssl, run_instance_count, registry) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 176

def add_it(host, host_ssl, run_instance_count, registry)
  @docker_host = host
  @docker_host_secure = host_ssl
  number_added = 0
  while (number_added < run_instance_count)
    run_def = @definition[:run]
    run_name = run_def[:name]
    extension = 1
    run_with_extension(:next, registry, false, true)
    number_added += 1
  end
end

#after_build(definition) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 225

def after_build(definition)
  delete_image_support_from_stage()
end

#api_image(registry, docker_connection) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 116

def api_image(registry, docker_connection)
  full_name = "#{registry}/#{image_name}"
  full_name += ":#{version()}" if (version() != nil)
  image = Docker::Image.get(full_name, {}, docker_connection)
  puts "Pushing Image: #{full_name} ..."
  return image
end

#before_build(definition) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 220

def before_build(definition)
  delete_image_support_from_stage()
  copy_image_support_to_stage()
end

#build_it ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 44

def build_it()
  docker_connection = docker_api.connection
  build_def = @definition[:build]
  if (build_def == nil)
    puts "Warning: build not defined for #{definition[:code]} - ignoring request"
  else
    begin
      before_build(@definition)
      remove_intermediate = REMOVE_INTERMEDIATE_FLAG
  
      volume_path = build_def[:volume_path]
      build_command = nil
    
      image_and_version = image_name()
      image_and_version += ":#{version()}" if (version() != nil)

      opts = build_def[:api_options] || {}
      opts[:t] = "#{image_and_version}"
      opts[:rm] = true

      Excon.defaults[:write_timeout] = 1000
      Excon.defaults[:read_timeout] = 1000
      puts "Building image.  Docker dir: #{docker_dir} ..."
      
      image = Docker::Image.build_from_dir(docker_dir, opts, docker_connection) do |v|
        begin
          if (log = JSON.parse(v)) && log.has_key?("stream")
            $stdout.puts log["stream"]
          end
        rescue Exception => ex
          puts "#{v}"
        end
      end
    rescue Exception => ex
      puts"Exception: #{ex.message}"
      puts ex.backtrace
      debugger
      raise "Exception building image.  #{ex.message}\nCheck connection to: #{docker_connection}"
    ensure
      after_build(@definition)
    end
  end
end

#copy_image_support_to_stage ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 237

def copy_image_support_to_stage
  raise "Definition nil" if @definition == nil
  raise "Build Definition nil" if @definition[:build] == nil
  image_support_dir = "#{FileUtils.pwd}/lib/support/image_support/"
  FileUtils.cp_r(image_support_dir, docker_dir())
end

#delete_image_support_from_stage ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 229

def delete_image_support_from_stage()
  FileUtils.remove_dir("#{docker_dir}image_support", true)
end

#do_push(registry) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 124

def do_push(registry)
  if (registry)
    Excon.defaults[:write_timeout] = 1000
    Excon.defaults[:read_timeout] = 1000
  
    docker_connection = docker_api.connection

    image = api_image(registry, docker_connection)

    credentials = nil
    result = image.push(credentials, {tag: version, repo: registry}) 
    puts "Done pushing Image: #{registry}/#{image_name}"
    the_registry = DockerRegistry.new(registry)
    
    if (the_registry.has_image_with_version?("#{image_name}", version) == false) 
      raise "After push, image doesn't appear in registry.  Image: #{image_name}:#{version}.  Push result: #{result}"
    end
  else
    puts "No registry specified for pushing"
  end
end

#do_tag(registry) ⇒ Object

def do_tag(image_name, version, registry)



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# File 'lib/support/docker_image_creator.rb', line 103

def do_tag(registry)
  docker_connection = docker_api.connection
  image = Docker::Image.get("#{image_name}:#{version}", {}, docker_connection)
  puts "Tagging image: #{image_name}"
  image.tag('repo' => "#{registry}/#{image_name()}", 'image' => 'unicorn', 'tag' => version(), force: true)
end

#docker_api ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 36

def docker_api
  @docker_host = @docker_host || ENV['DOCKER_HOST']
  @docker_host_secure = @docker_host_secure || (ENV['DOCKER_TLS_VERIFY'].to_s == '1')
  raise "Need to define DOCKER_HOST env variable" if (!@docker_host)
  raise "Need to define DOCKER_TLS_VERIFY env variable" if (@docker_host_secure == nil)
  docker_api = DockerApi.new(@docker_host, @docker_host_secure)
end

#docker_dir ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 233

def docker_dir
  return @definition[:build][:docker_directory] + "/"
end

#image_name ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 28

def image_name
  return (@image_name_forced) if (@image_name_forced)
  build_def = @definition[:build]
  name = @definition[:run][:image_name] if (@definition[:run])
  name = build_def[:name] if (build_def)
  return name
end

#kill_all(host, host_ssl) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 189

def kill_all(host, host_ssl)
  docker_runner = DockerRunner.new(self, nil)
  docker_runner.registry = nil
  docker_runner.use_extension = true
  docker_runner.interact =  false
  docker_runner.remote_address = host
  docker_runner.secure_docker_api = host_ssl

  run_def = @definition[:run]
  run_name = run_def[:name]
  docker_runner.kill_all(run_name)
end

#openlogic_home ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 215

def openlogic_home()
  @openlogic_home = @openlogic_home[0..(@openlogic_home.length - 2)] if (@openlogic_home.end_with? "/")
  return @openlogic_home
end

#push_it(registry) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 110

def push_it(registry)
  raise "DOCKER_REGISTRY environment variable not defined for push operation" if registry == nil
  build_def = @definition[:build]
  do_push(registry)
end

#run_it(host, host_ssl, interact, run_instance_count, registry = nil) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 146

def run_it(host, host_ssl, interact, run_instance_count, registry = nil)
  @docker_host = host
  @docker_host_secure = host_ssl
  puts "Warning:  registry not defined, assuming run is local" if registry == nil
  run_def = @definition[:run]
  build_def = @definition[:build]
  if (run_def == nil)
    puts "No run definition for: #{@definition[:code]}" 
  else
    (1..run_instance_count).each do |instance_index|
      use_extension = (run_instance_count > 1)
      run_with_extension(:next, registry, interact, use_extension)
    end
  end
end

#run_with_extension(instance_index, registry, interact, use_extension) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 162

def run_with_extension(instance_index, registry, interact, use_extension)
  @docker_api = DockerApi.new(@docker_host)
  docker_runner = DockerRunner.new(self, nil)
  docker_runner.registry = registry
  docker_runner.instance_index = instance_index
  docker_runner.use_extension = use_extension
  docker_runner.interact =  interact
  docker_runner.image_name = image_name
  docker_runner.code = @definition[:code]
  docker_runner.remote_address = @docker_host
  docker_runner.secure_docker_api = @docker_host_secure
  docker_runner.run_with_extension
end

#subtract(host, host_ssl, count) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 202

def subtract(host, host_ssl, count)
  docker_runner = DockerRunner.new(self, nil)
  docker_runner.registry = nil
  docker_runner.use_extension = true
  docker_runner.interact =  false
  docker_runner.remote_address = host
  docker_runner.secure_docker_api = host_ssl

  run_def = @definition[:run]
  run_name = run_def[:name]
  docker_runner.kill(run_name, count)
end

#tag_it(registry) ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 97

def tag_it(registry)
  raise "DOCKER_REGISTRY environment variable not defined for push operation" if registry == nil
  do_tag(registry)
end

#use_date_as_version? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/support/docker_image_creator.rb', line 24

def use_date_as_version?
  false
end

#version ⇒ Object 



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# File 'lib/support/docker_image_creator.rb', line 88

def version
  return (@version_forced) if (@version_forced)
  build_def = @definition[:build]
  raise "No build definition for: #{@definition[:code]}" if (!build_def)
  version = 'latest'
  version = build_def[:version] if (build_def[:version] != nil)
  return version
end