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module ContainerRegistry
class Tag
attr_reader :repository, :name
def initialize(repository, name)
@repository, @name = repository, name
end
def valid?
manifest.present?
end
def manifest
return @manifest if defined?(@manifest)
@manifest = client.repository_manifest(repository.name, name)
end
def [](key)
return unless manifest
manifest[key]
end
def digest
return @digest if defined?(@digest)
@digest = client.repository_tag_digest(repository.name, name)
end
def config_blob
return @config_blob if defined?(@config_blob)
return unless manifest && manifest['config']
@config_blob = ContainerRegistry::Blob.new(repository, manifest['config'])
end
def config
return unless config_blob
@config ||= ContainerRegistry::Config.new(self, config_blob)
end
def created_at
return unless config
@created_at ||= DateTime.rfc3339(config['created'])
end
def layers
return @layers if defined?(@layers)
return unless manifest
@layers = manifest['layers'].map do |layer|
ContainerRegistry::Blob.new(repository, layer)
end
end
def total_size
return unless layers
layers.map(&:size).sum
end
def delete
return unless digest
client.delete_repository_tag(repository.name, digest)
end
def copy_to(repository)
return unless manifest
layers.each do |blob|
repository.mount_blob(blob)
end
repository.mount_blob(config_blob)
repository.mount_manifest(name, manifest.to_json)
end
def client
@client ||= repository.client
end
end
end
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