debian-mirror-gitlab/app/graphql/resolvers/package_pipelines_resolver.rb

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# frozen_string_literal: true
module Resolvers
class PackagePipelinesResolver < BaseResolver
include Gitlab::Graphql::Authorize::AuthorizeResource
type Types::Ci::PipelineType.connection_type, null: true
extension Gitlab::Graphql::Extensions::ExternallyPaginatedArrayExtension
authorizes_object!
authorize :read_pipeline
alias_method :package, :object
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# this resolver can be called for 100 packages max and we want to limit the
# number of build infos returned for _each_ package when using the new finder.
MAX_PAGE_SIZE = 20
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# This returns a promise for a connection of promises for pipelines:
# Lazy[Connection[Lazy[Pipeline]]] structure
def resolve(first: nil, last: nil, after: nil, before: nil, lookahead:)
default_value = default_value_for(first: first, last: last, after: after, before: before)
BatchLoader::GraphQL.for(package.id)
.batch(default_value: default_value) do |package_ids, loader|
build_infos = ::Packages::BuildInfosFinder.new(
package_ids,
first: first,
last: last,
after: decode_cursor(after),
before: decode_cursor(before),
max_page_size: MAX_PAGE_SIZE,
support_next_page: lookahead.selects?(:page_info)
).execute
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build_infos.each do |build_info|
loader.call(build_info.package_id) do |connection|
connection.items << lazy_load_pipeline(build_info.pipeline_id)
connection
end
end
end
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end
# we manage the pagination manually, so opt out of the connection field extension
def self.field_options
super.merge(
connection: false,
extras: [:lookahead]
)
end
private
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def lazy_load_pipeline(id)
::Gitlab::Graphql::Loaders::BatchModelLoader.new(::Ci::Pipeline, id)
.find
end
def default_value_for(first:, last:, after:, before:)
Gitlab::Graphql::Pagination::ActiveRecordArrayConnection.new(
[],
first: first,
last: last,
after: after,
before: before,
max_page_size: MAX_PAGE_SIZE
)
end
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def decode_cursor(encoded)
return unless encoded
decoded = Gitlab::Json.parse(context.schema.cursor_encoder.decode(encoded, nonce: true))
id_from_cursor(decoded)
rescue JSON::ParserError
raise Gitlab::Graphql::Errors::ArgumentError, "Please provide a valid cursor"
end
def id_from_cursor(cursor)
cursor&.fetch('id')
rescue KeyError
raise Gitlab::Graphql::Errors::ArgumentError, "Please provide a valid cursor"
end
end
end