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# frozen_string_literal: true
module Gitlab
module Ci
class Config
module Interpolation
##
# Performs CI config file interpolation and either returns the interpolated result or interpolation errors.
#
class TextInterpolator
attr_reader :errors
def initialize(config, input_args, variables)
@config = config
@input_args = input_args.to_h
@variables = variables
@errors = []
@interpolated = false
end
def valid?
errors.none?
end
def to_result
@result
end
def error_message
# Interpolator can have multiple error messages, like: ["interpolation interrupted by errors", "unknown
# interpolation key: `abc`"] ?
#
# We are joining them together into a single one, because only one error can be surfaced when an external
# file gets included and is invalid. The limit to three error messages combined is more than required.
#
errors.first(3).join(', ')
end
def interpolate!
return errors.concat(config.errors) unless config.valid?
if inputs_without_header?
return errors.push(
_('Given inputs not defined in the `spec` section of the included configuration file'))
end
return @result ||= config.content unless config.header
return errors.concat(header.errors) unless header.valid?
return errors.concat(inputs.errors) unless inputs.valid?
return errors.concat(context.errors) unless context.valid?
return errors.concat(template.errors) unless template.valid?
@interpolated = true
@result ||= template.interpolated
end
def interpolated?
@interpolated
end
private
attr_reader :config, :input_args, :variables
def inputs_without_header?
input_args.any? && !config.header
end
def header
@header ||= Header::Root.new(config.header).tap do |header|
header.key = 'header'
header.compose!
end
end
def content
@content ||= config.content
end
def spec
@spec ||= header.inputs_value
end
def inputs
@inputs ||= Inputs.new(spec, input_args)
end
def context
@context ||= Context.new({ inputs: inputs.to_hash }, variables: variables)
end
def template
@template ||= TextTemplate.new(content, context)
end
end
end
end
end
end
|
