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# frozen_string_literal: true
require_relative 'utils/override'
module Gitlab
class ExceptionsApp < ActionDispatch::PublicExceptions
extend ::Gitlab::Utils::Override
REQUEST_ID_PLACEHOLDER = '<!-- REQUEST_ID -->'
REQUEST_ID_PARAGRAPH = '<p>Request ID: <code>%s</code></p>'
override :call
def call(env)
status, headers, body = super
if html_rendered? && body.first&.include?(REQUEST_ID_PLACEHOLDER)
body = [insert_request_id(env, body.first)]
headers['X-GitLab-Custom-Error'] = '1'
end
[status, headers, body]
end
private
override :render_html
def render_html(status)
@html_rendered = true
super
end
def html_rendered?
!!@html_rendered
end
def insert_request_id(env, body)
request_id = ERB::Util.html_escape(ActionDispatch::Request.new(env).request_id)
body.gsub(REQUEST_ID_PLACEHOLDER, REQUEST_ID_PARAGRAPH % [request_id])
end
end
end
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