Class: OsCtl::Image::Operations::Image::Build

Inherits:
Base
  • Object
show all
Includes:
Lib::Utils::Log, Lib::Utils::System
Defined in:
lib/osctl/image/operations/image/build.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Base

run

Constructor Details

#initialize(base_dir, image, opts) ⇒ Build

Returns a new instance of Build.

Parameters:

  • base_dir (String)
  • image (Image)
  • opts (Hash)

Options Hash (opts):

  • :build_dataset (String)
  • :output_dir (String)
  • :vendor (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 49

def initialize(base_dir, image, opts)
  super()
  @base_dir = base_dir

  @image = image
  image.load_config

  @builder = Builder.new(base_dir, image.builder)
  builder.load_config

  @build_id = SecureRandom.hex(4)
  @build_dataset = File.join(opts[:build_dataset], build_id)
  @output_dataset = File.join(build_dataset, 'output')
  @work_dataset = File.join(build_dataset, 'work')
  @output_dir = opts[:output_dir]

  name = [
    image.distribution,
    image.version,
    image.arch,
    opts[:vendor] || image.vendor,
    image.variant
  ].join('-')

  @output_tar = File.join(output_dir, "#{name}-archive.tar")
  @output_stream = File.join(output_dir, "#{name}-stream.tar")

  @client = OsCtldClient.new
end

Instance Attribute Details

#base_dir ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 11

def base_dir
  @base_dir
end

#build_dataset ⇒ Object (readonly, protected)

Returns the value of attribute build_dataset.



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# File 'lib/osctl/image/operations/image/build.rb', line 108

def build_dataset
  @build_dataset
end

#build_id ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 35

def build_id
  @build_id
end

#builder ⇒ Builder (readonly)

Returns:



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# File 'lib/osctl/image/operations/image/build.rb', line 17

def builder
  @builder
end

#client ⇒ Object (readonly, protected)

Returns the value of attribute client.



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# File 'lib/osctl/image/operations/image/build.rb', line 108

def client
  @client
end

#config_file ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 32

def config_file
  @config_file
end

#image ⇒ Image (readonly)

Returns:



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# File 'lib/osctl/image/operations/image/build.rb', line 14

def image
  @image
end

#install_dir ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 29

def install_dir
  @install_dir
end

#output_dataset ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 20

def output_dataset
  @output_dataset
end

#output_dir ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 26

def output_dir
  @output_dir
end

#output_stream ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 41

def output_stream
  @output_stream
end

#output_tar ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 38

def output_tar
  @output_tar
end

#work_dataset ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/osctl/image/operations/image/build.rb', line 23

def work_dataset
  @work_dataset
end

#work_dir ⇒ Object (readonly, protected)

Returns the value of attribute work_dir.



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# File 'lib/osctl/image/operations/image/build.rb', line 108

def work_dir
  @work_dir
end

Instance Method Details

#build ⇒ Object (protected) 



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# File 'lib/osctl/image/operations/image/build.rb', line 110

def build
  Operations::Builder::UseOrCreate.run(builder, base_dir)

  root_uid, root_gid = Operations::Builder::GetRootUgid.run(builder)

  zfs(
    :create,
    "-p -o uidmap=0:#{root_uid}:65536 -o gidmap=0:#{root_gid}:65536",
    work_dataset
  )
  zfs(
    :create,
    "-p -o uidmap=0:#{root_uid}:65536 -o gidmap=0:#{root_gid}:65536",
    output_dataset
  )

  @work_dir = zfs(:get, '-H -o value mountpoint', work_dataset).output.strip
  @output_dir = zfs(:get, '-H -o value mountpoint', output_dataset).output.strip
  @install_dir = File.join(output_dir, 'private')
  @config_file = File.join(install_dir, 'container.yml')

  Dir.mkdir(install_dir)

  client.batch do
    client.bind_mount(builder.ctid, base_dir, builder_base_dir)
    client.bind_mount(builder.ctid, work_dir, builder_work_dir)
    client.bind_mount(builder.ctid, install_dir, builder_install_dir)

    client.activate_mount(builder.ctid, builder_base_dir)
    client.activate_mount(builder.ctid, builder_work_dir)
    client.activate_mount(builder.ctid, builder_install_dir)
  end

  rc = Operations::Builder::ControlledExec.run(
    builder,
    [
      File.join(builder_base_dir, 'bin', 'runner'),
      'image',
      'build',
      build_id,
      builder_work_dir,
      builder_install_dir,
      image.name
    ],
    id: build_id,
    client:
  )

  if rc != 0
    raise OperationError,
          "build of #{image.name} on #{builder.name} failed with " \
          "exit status #{rc}"
  end

  sys = OsCtl::Lib::Sys.new
  sys.syncfs(install_dir)

  zfs(:unmount, nil, output_dataset)
  zfs(:set, 'uidmap=none gidmap=none', output_dataset)
  zfs(:mount, nil, output_dataset)

  Operations::Image::FixFileCapabilities.run(image, install_dir)
  Operations::Image::Export.run(self)
end

#builder_base_dir ⇒ Object (protected) 



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# File 'lib/osctl/image/operations/image/build.rb', line 204

def builder_base_dir
  "/build/basedir.#{build_id}"
end

#builder_install_dir ⇒ Object (protected) 



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# File 'lib/osctl/image/operations/image/build.rb', line 212

def builder_install_dir
  "/build/installdir.#{build_id}"
end

#builder_work_dir ⇒ Object (protected) 



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# File 'lib/osctl/image/operations/image/build.rb', line 208

def builder_work_dir
  "/build/workdir.#{build_id}"
end

#cached? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/osctl/image/operations/image/build.rb', line 98

def cached?
  File.exist?(output_tar) || File.exist?(output_stream)
end

#cleanup ⇒ Object (protected) 



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# File 'lib/osctl/image/operations/image/build.rb', line 175

def cleanup
  client.batch do
    client.ignore_error { client.unmount(builder.ctid, builder_work_dir) }
    client.ignore_error { client.unmount(builder.ctid, builder_install_dir) }
    client.ignore_error { client.unmount(builder.ctid, builder_base_dir) }
  end

  if builder.attrs
    [builder_base_dir, builder_work_dir, builder_install_dir].each do |dir|
      Dir.rmdir(File.join(builder.attrs[:rootfs], dir))
    rescue Errno::ENOENT
      # ignore
    end
  end

  zfs(:destroy, nil, work_dataset, valid_rcs: :all)

  list = zfs(:list, '-H -o name -t snapshot', output_dataset, valid_rcs: :all)

  if list.success?
    list.output.split("\n").each do |s|
      zfs(:destroy, nil, s.strip)
    end
  end

  zfs(:destroy, nil, output_dataset, valid_rcs: :all)
  zfs(:destroy, nil, build_dataset, valid_rcs: :all)
end

#execute ⇒ Operations::Image::Build

Returns:



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# File 'lib/osctl/image/operations/image/build.rb', line 80

def execute
  log(:info, "Using builder #{builder.name}")
  build
  self
ensure
  cleanup
end

#has_config_file? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/osctl/image/operations/image/build.rb', line 88

def has_config_file?
  File.exist?(config_file)
end

#log_type ⇒ Object 



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# File 'lib/osctl/image/operations/image/build.rb', line 102

def log_type
  "build #{image.name}@#{builder.name}"
end

#read_config_file ⇒ Object 



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# File 'lib/osctl/image/operations/image/build.rb', line 92

def read_config_file
  ret = OsCtl::Lib::ConfigFile.load_yaml_file(config_file)
  File.unlink(config_file)
  ret
end