debian-mirror-gitlab/lib/container_registry/client.rb

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# frozen_string_literal: true
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module ContainerRegistry
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class Client < BaseClient
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include Gitlab::Utils::StrongMemoize
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attr_accessor :uri
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REGISTRY_VERSION_HEADER = 'gitlab-container-registry-version'
REGISTRY_FEATURES_HEADER = 'gitlab-container-registry-features'
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REGISTRY_TAG_DELETE_FEATURE = 'tag_delete'
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DEFAULT_TAGS_PAGE_SIZE = 10000
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ALLOWED_REDIRECT_SCHEMES = %w[http https].freeze
REDIRECT_OPTIONS = {
clear_authorization_header: true,
limit: 3,
cookies: [],
callback: -> (response_env, request_env) do
request_env.request_headers.delete(::FaradayMiddleware::FollowRedirects::AUTH_HEADER)
redirect_to = request_env.url
unless redirect_to.scheme.in?(ALLOWED_REDIRECT_SCHEMES)
raise ArgumentError, "Invalid scheme for #{redirect_to}"
end
end
}.freeze
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def self.supports_tag_delete?
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with_dummy_client(return_value_if_disabled: false) do |client|
client.supports_tag_delete?
end
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end
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def self.registry_info
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with_dummy_client do |client|
client.registry_info
end
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end
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def registry_info
response = faraday.get("/v2/")
return {} unless response&.success?
version = response.headers[REGISTRY_VERSION_HEADER]
features = response.headers.fetch(REGISTRY_FEATURES_HEADER, '')
{
version: version,
features: features.split(',').map(&:strip),
vendor: version ? 'gitlab' : 'other'
}
end
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def repository_tags(name, page_size: DEFAULT_TAGS_PAGE_SIZE)
response = faraday.get("/v2/#{name}/tags/list") do |req|
req.params['n'] = page_size
end
response_body(response)
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end
def repository_manifest(name, reference)
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response_body faraday.get("/v2/#{name}/manifests/#{reference}")
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end
def repository_tag_digest(name, reference)
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response = faraday.head("/v2/#{name}/manifests/#{reference}")
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response.headers[DependencyProxy::Manifest::DIGEST_HEADER] if response.success?
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end
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def delete_repository_tag_by_digest(name, reference)
delete_if_exists("/v2/#{name}/manifests/#{reference}")
end
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def delete_repository_tag_by_name(name, reference)
delete_if_exists("/v2/#{name}/tags/reference/#{reference}")
end
# Check if the registry supports tag deletion. This is only supported by the
# GitLab registry fork. The fastest and safest way to check this is to send
# an OPTIONS request to /v2/<name>/tags/reference/<tag>, using a random
# repository name and tag (the registry won't check if they exist).
# Registries that support tag deletion will reply with a 200 OK and include
# the DELETE method in the Allow header. Others reply with an 404 Not Found.
def supports_tag_delete?
strong_memoize(:supports_tag_delete) do
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registry_features = Gitlab::CurrentSettings.container_registry_features || []
next true if ::Gitlab.com? && registry_features.include?(REGISTRY_TAG_DELETE_FEATURE)
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response = faraday.run_request(:options, '/v2/name/tags/reference/tag', '', {})
response.success? && response.headers['allow']&.include?('DELETE')
end
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end
def upload_raw_blob(path, blob)
digest = "sha256:#{Digest::SHA256.hexdigest(blob)}"
if upload_blob(path, blob, digest).success?
[blob, digest]
end
end
def upload_blob(name, content, digest)
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upload = faraday(timeout_enabled: false).post("/v2/#{name}/blobs/uploads/")
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return upload unless upload.success?
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location = URI(upload.headers['location'])
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faraday(timeout_enabled: false).put("#{location.path}?#{location.query}") do |req|
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req.params['digest'] = digest
req.headers['Content-Type'] = 'application/octet-stream'
req.body = content
end
end
def generate_empty_manifest(path)
image = {
config: {}
}
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image, image_digest = upload_raw_blob(path, Gitlab::Json.pretty_generate(image))
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return unless image
{
schemaVersion: 2,
mediaType: DOCKER_DISTRIBUTION_MANIFEST_V2_TYPE,
config: {
mediaType: CONTAINER_IMAGE_V1_TYPE,
size: image.size,
digest: image_digest
}
}
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end
def blob(name, digest, type = nil)
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type ||= 'application/octet-stream'
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response_body faraday_blob.get("/v2/#{name}/blobs/#{digest}", nil, 'Accept' => type)
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end
def delete_blob(name, digest)
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delete_if_exists("/v2/#{name}/blobs/#{digest}")
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end
def put_tag(name, reference, manifest)
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response = faraday(timeout_enabled: false).put("/v2/#{name}/manifests/#{reference}") do |req|
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req.headers['Content-Type'] = DOCKER_DISTRIBUTION_MANIFEST_V2_TYPE
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req.body = Gitlab::Json.pretty_generate(manifest)
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end
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response.headers[DependencyProxy::Manifest::DIGEST_HEADER] if response.success?
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end
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private
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def faraday_blob
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@faraday_blob ||= faraday_base do |conn|
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initialize_connection(conn, @options)
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conn.use ::FaradayMiddleware::FollowRedirects, REDIRECT_OPTIONS
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end
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end
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end
end
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ContainerRegistry::Client.prepend_mod_with('ContainerRegistry::Client')