Python multi_image_tarball Examples

Example #1

File: join_layers.py Project: zenreach/rules_docker

def create_bundle(output, tag_to_config, tag_to_manifest, diffid_to_blobsum,
                  blobsum_to_unzipped, blobsum_to_zipped, blobsum_to_legacy):
  """Creates a Docker image from a list of layers.

  Args:
    output: the name of the docker image file to create.
    layers: the layers (tar files) to join to the image.
    tag_to_layer: a map from docker_name.Tag to the layer id it references.
    layer_to_tags: a map from the name of the layer tarball as it appears
            in our archives to the list of tags applied to it.
  """

  with tarfile.open(output, 'w') as tar:
    def add_file(filename, contents):
      info = tarfile.TarInfo(filename)
      info.size = len(contents)
      tar.addfile(tarinfo=info, fileobj=cStringIO.StringIO(contents))

    tag_to_image = {}
    for (tag, config) in six.iteritems(tag_to_config):
      manifest = None
      if tag in tag_to_manifest:
        manifest = tag_to_manifest[tag]
      tag_to_image[tag] = FromParts(
          config, manifest, diffid_to_blobsum,
          blobsum_to_unzipped, blobsum_to_zipped, blobsum_to_legacy)

    v2_2_save.multi_image_tarball(tag_to_image, tar)

Example #2

File: join_layers.py Project: gitu/rules_docker

def create_bundle(output, tag_to_config, diffid_to_blobsum,
                  blobsum_to_unzipped, blobsum_to_zipped, blobsum_to_legacy):
  """Creates a Docker image from a list of layers.

  Args:
    output: the name of the docker image file to create.
    layers: the layers (tar files) to join to the image.
    tag_to_layer: a map from docker_name.Tag to the layer id it references.
    layer_to_tags: a map from the name of the layer tarball as it appears
            in our archives to the list of tags applied to it.
  """

  with tarfile.open(output, 'w') as tar:
    def add_file(filename, contents):
      info = tarfile.TarInfo(filename)
      info.size = len(contents)
      tar.addfile(tarinfo=info, fileobj=cStringIO.StringIO(contents))

    tag_to_image = {}
    for (tag, config) in six.iteritems(tag_to_config):
      tag_to_image[tag] = FromParts(
          config, diffid_to_blobsum,
          blobsum_to_unzipped, blobsum_to_zipped, blobsum_to_legacy)

    v2_2_save.multi_image_tarball(tag_to_image, tar)

Example #3

File: join_layers.py Project: spxtr/rules_docker

def create_image(output, layers, tag_to_layer=None, layer_to_tags=None):
    """Creates a Docker image from a list of layers.

  Args:
    output: the name of the docker image file to create.
    layers: the layers (tar files) to join to the image.
    tag_to_layer: a map from docker_name.Tag to the layer id it references.
    layer_to_tags: a map from the name of the layer tarball as it appears
            in our archives to the list of tags applied to it.
  """
    layer_to_tarball = {}
    for layer in layers:
        with tarfile.open(layer, 'r') as tarball:
            for path in tarball.getnames():
                if os.path.basename(path) != 'layer.tar':
                    continue
                layer_id = os.path.basename(os.path.dirname(path))
                layer_to_tarball[layer_id] = layer

    with tarfile.open(output, 'w') as tar:

        def add_file(filename, contents):
            info = tarfile.TarInfo(filename)
            info.size = len(contents)
            tar.addfile(tarinfo=info, fileobj=cStringIO.StringIO(contents))

        tag_to_image = {}
        tag_to_v1_image = {}
        for (tag, top) in tag_to_layer.iteritems():
            v1_img = v1_image.FromShardedTarball(
                lambda layer_id: layer_to_tarball[layer_id], top)
            tag_to_v1_image[tag] = v1_img
            v2_2_img = ImageConfig(
                v2_compat.config_file([
                    json.loads(v1_img.json(layer_id))
                    for layer_id in reversed(v1_img.ancestry(v1_img.top()))
                ], [
                    'sha256:' + hashlib.sha256(
                        v1_img.uncompressed_layer(layer_id)).hexdigest()
                    for layer_id in reversed(v1_img.ancestry(v1_img.top()))
                ]))
            tag_to_image[tag] = v2_2_img

        v2_2_save.multi_image_tarball(tag_to_image, tar, tag_to_v1_image)

Example #4

File: join_layers.py Project: hegrec/rules_docker

def create_image(output, layers, tag_to_layer=None, layer_to_tags=None):
  """Creates a Docker image from a list of layers.

  Args:
    output: the name of the docker image file to create.
    layers: the layers (tar files) to join to the image.
    tag_to_layer: a map from docker_name.Tag to the layer id it references.
    layer_to_tags: a map from the name of the layer tarball as it appears
            in our archives to the list of tags applied to it.
  """
  layer_to_tarball = {}
  for layer in layers:
    with tarfile.open(layer, 'r') as tarball:
      for path in tarball.getnames():
        if os.path.basename(path) != 'layer.tar':
          continue
        layer_id = os.path.basename(os.path.dirname(path))
        layer_to_tarball[layer_id] = layer

  with tarfile.open(output, 'w') as tar:
    def add_file(filename, contents):
      info = tarfile.TarInfo(filename)
      info.size = len(contents)
      tar.addfile(tarinfo=info, fileobj=cStringIO.StringIO(contents))

    tag_to_image = {}
    tag_to_v1_image = {}
    for (tag, top) in tag_to_layer.iteritems():
      v1_img = v1_image.FromShardedTarball(
          lambda layer_id: layer_to_tarball[layer_id], top)
      tag_to_v1_image[tag] = v1_img
      v2_2_img = ImageConfig(v2_compat.config_file([
          json.loads(v1_img.json(layer_id))
          for layer_id in reversed(v1_img.ancestry(v1_img.top()))
      ], [
          'sha256:' + hashlib.sha256(
              v1_img.uncompressed_layer(layer_id)
          ).hexdigest()
          for layer_id in reversed(v1_img.ancestry(v1_img.top()))
      ]))
      tag_to_image[tag] = v2_2_img

    v2_2_save.multi_image_tarball(tag_to_image, tar, tag_to_v1_image)