2021-01-07 21:10:18 +00:00
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# frozen_string_literal: true
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require 'find'
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module Gitlab
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module Graphql
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module Queries
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IMPORT_RE = /^#\s*import "(?<path>[^"]+)"$/m.freeze
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EE_ELSE_CE = /^ee_else_ce/.freeze
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HOME_RE = /^~/.freeze
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HOME_EE = %r{^ee/}.freeze
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DOTS_RE = %r{^(\.\./)+}.freeze
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DOT_RE = %r{^\./}.freeze
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IMPLICIT_ROOT = %r{^app/}.freeze
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CONN_DIRECTIVE = /@connection\(key: "\w+"\)/.freeze
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class WrappedError
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delegate :message, to: :@error
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def initialize(error)
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@error = error
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end
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def path
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[]
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end
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end
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class FileNotFound
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def initialize(file)
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@file = file
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end
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def message
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"File not found: #{@file}"
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end
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def path
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[]
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end
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end
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# We need to re-write queries to remove all @client fields. Ideally we
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# would do that as a source-to-source transformation of the AST, but doing it using a
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# printer is much simpler.
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class ClientFieldRedactor < GraphQL::Language::Printer
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attr_reader :fields_printed, :skipped_arguments, :printed_arguments, :used_fragments
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def initialize(skips = true)
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@skips = skips
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@fields_printed = 0
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@in_operation = false
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@skipped_arguments = [].to_set
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@printed_arguments = [].to_set
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@used_fragments = [].to_set
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@skipped_fragments = [].to_set
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@used_fragments = [].to_set
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end
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def print_variable_identifier(variable_identifier)
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@printed_arguments << variable_identifier.name
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super
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end
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def print_fragment_spread(fragment_spread, indent: "")
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@used_fragments << fragment_spread.name
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super
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end
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def print_operation_definition(op, indent: "")
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@in_operation = true
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out = +"#{indent}#{op.operation_type}"
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out << " #{op.name}" if op.name
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# Do these first, so that we detect any skipped arguments
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dirs = print_directives(op.directives)
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sels = print_selections(op.selections, indent: indent)
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# remove variable definitions only used in skipped (client) fields
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vars = op.variables.reject do |v|
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@skipped_arguments.include?(v.name) && !@printed_arguments.include?(v.name)
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end
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if vars.any?
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out << "(#{vars.map { |v| print_variable_definition(v) }.join(", ")})"
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end
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out + dirs + sels
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ensure
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@in_operation = false
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end
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def print_field(field, indent: '')
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if skips? && field.directives.any? { |d| d.name == 'client' }
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skipped = self.class.new(false)
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skipped.print_node(field)
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@skipped_fragments |= skipped.used_fragments
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@skipped_arguments |= skipped.printed_arguments
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return ''
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end
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ret = super
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@fields_printed += 1 if @in_operation && ret != ''
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ret
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end
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def print_fragment_definition(fragment_def, indent: "")
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if skips? && @skipped_fragments.include?(fragment_def.name) && !@used_fragments.include?(fragment_def.name)
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return ''
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end
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super
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end
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def skips?
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@skips
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end
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end
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class Definition
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attr_reader :file, :imports
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def initialize(path, fragments)
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@file = path
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@fragments = fragments
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@imports = []
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@errors = []
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@ee_else_ce = []
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end
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def text(mode: :ce)
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qs = [query] + all_imports(mode: mode).uniq.sort.map { |p| fragment(p).query }
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t = qs.join("\n\n").gsub(/\n\n+/, "\n\n")
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return t unless /@client/.match?(t)
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doc = ::GraphQL.parse(t)
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printer = ClientFieldRedactor.new
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redacted = doc.dup.to_query_string(printer: printer)
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return redacted if printer.fields_printed > 0
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end
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2021-02-05 15:09:28 +00:00
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def complexity(schema)
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# See BaseResolver::resolver_complexity
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# we want to see the max possible complexity.
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fake_args = Struct
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.new(:if, :keyword_arguments)
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.new(nil, { sort: true, search: true })
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query = GraphQL::Query.new(schema, text)
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# We have no arguments, so fake them.
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query.define_singleton_method(:arguments_for) { |_x, _y| fake_args }
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GraphQL::Analysis::AST.analyze_query(query, [GraphQL::Analysis::AST::QueryComplexity]).first
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end
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2021-01-07 21:10:18 +00:00
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def query
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return @query if defined?(@query)
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# CONN_DIRECTIVEs are purely client-side constructs
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@query = File.read(file).gsub(CONN_DIRECTIVE, '').gsub(IMPORT_RE) do
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path = $~[:path]
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if EE_ELSE_CE.match?(path)
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@ee_else_ce << path.gsub(EE_ELSE_CE, '')
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else
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@imports << fragment_path(path)
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end
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''
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end
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rescue Errno::ENOENT
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@errors << FileNotFound.new(file)
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@query = nil
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end
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def all_imports(mode: :ce)
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return [] if query.nil?
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home = mode == :ee ? @fragments.home_ee : @fragments.home
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eithers = @ee_else_ce.map { |p| home + p }
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(imports + eithers).flat_map { |p| [p] + @fragments.get(p).all_imports(mode: mode) }
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end
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def all_errors
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return @errors.to_set if query.nil?
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paths = imports + @ee_else_ce.flat_map { |p| [@fragments.home + p, @fragments.home_ee + p] }
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paths.map { |p| fragment(p).all_errors }.reduce(@errors.to_set) { |a, b| a | b }
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end
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def validate(schema)
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return [:client_query, []] if query.present? && text.nil?
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errs = all_errors.presence || schema.validate(text)
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if @ee_else_ce.present?
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errs += schema.validate(text(mode: :ee))
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end
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[:validated, errs]
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rescue ::GraphQL::ParseError => e
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[:validated, [WrappedError.new(e)]]
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end
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private
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def fragment(path)
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@fragments.get(path)
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end
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def fragment_path(import_path)
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frag_path = import_path.gsub(HOME_RE, @fragments.home)
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frag_path = frag_path.gsub(HOME_EE, @fragments.home_ee + '/')
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frag_path = frag_path.gsub(DOT_RE) do
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Pathname.new(file).parent.to_s + '/'
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end
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frag_path = frag_path.gsub(DOTS_RE) do |dots|
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rel_dir(dots.split('/').count)
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end
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2021-04-19 15:09:08 +00:00
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frag_path.gsub(IMPLICIT_ROOT) do
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2021-01-07 21:10:18 +00:00
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(Rails.root / 'app').to_s + '/'
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end
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end
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def rel_dir(n_steps_up)
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path = Pathname.new(file).parent
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while n_steps_up > 0
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path = path.parent
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n_steps_up -= 1
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end
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path.to_s + '/'
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end
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end
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class Fragments
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def initialize(root, dir = 'app/assets/javascripts')
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@root = root
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@store = {}
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@dir = dir
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end
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def home
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@home ||= (@root / @dir).to_s
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end
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def home_ee
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@home_ee ||= (@root / 'ee' / @dir).to_s
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end
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def get(frag_path)
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@store[frag_path] ||= Definition.new(frag_path, self)
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end
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end
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def self.find(root)
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definitions = []
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::Find.find(root.to_s) do |path|
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2021-04-22 15:09:56 +00:00
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definitions << Definition.new(path, fragments) if query_for_gitlab_schema?(path)
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2021-01-07 21:10:18 +00:00
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end
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definitions
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rescue Errno::ENOENT
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[] # root does not exist
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end
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def self.fragments
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@fragments ||= Fragments.new(Rails.root)
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end
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def self.all
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['.', 'ee'].flat_map do |prefix|
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find(Rails.root / prefix / 'app/assets/javascripts')
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end
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end
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def self.known_failure?(path)
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@known_failures ||= YAML.safe_load(File.read(Rails.root.join('config', 'known_invalid_graphql_queries.yml')))
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@known_failures.fetch('filenames', []).any? { |known_failure| path.to_s.ends_with?(known_failure) }
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end
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2021-04-22 15:09:56 +00:00
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def self.query_for_gitlab_schema?(path)
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2021-01-07 21:10:18 +00:00
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path.ends_with?('.graphql') &&
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!path.ends_with?('.fragment.graphql') &&
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2021-04-22 15:09:56 +00:00
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!path.ends_with?('typedefs.graphql') &&
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!/.*\.customer\.(query|mutation)\.graphql$/.match?(path)
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2021-01-07 21:10:18 +00:00
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end
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end
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end
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end
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