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Contents
# Shamelessly copied from ActionDispatch::RequestId
require 'securerandom'
require 'active_support/core_ext/string/access'
require 'active_support/core_ext/object/blank'
# rubocop:disable Lint/AssignmentInCondition, Metrics/LineLength, Style/GuardClause
module Loga
module Rack
# Makes a unique request id available to the action_dispatch.request_id env variable (which is then accessible through
# ActionDispatch::Request#uuid) and sends the same id to the client via the X-Request-Id header.
#
# The unique request id is either based on the X-Request-Id header in the request, which would typically be generated
# by a firewall, load balancer, or the web server, or, if this header is not available, a random uuid. If the
# header is accepted from the outside world, we sanitize it to a max of 255 chars and alphanumeric and dashes only.
#
# The unique request id can be used to trace a request end-to-end and would typically end up being part of log files
# from multiple pieces of the stack.
class RequestId
def initialize(app)
@app = app
end
def call(env)
env['action_dispatch.request_id'] = external_request_id(env) || internal_request_id
@app.call(env).tap do |_status, headers, _body|
headers['X-Request-Id'] = env['action_dispatch.request_id']
end
end
private
def external_request_id(env)
if request_id = env['HTTP_X_REQUEST_ID'].presence
request_id.gsub(/[^\w\-]/, '').first(255)
end
end
def internal_request_id
SecureRandom.uuid
end
end
end
end
# rubocop:enable Lint/AssignmentInCondition, Metrics/LineLength, Style/GuardClause
Version data entries
14 entries across 14 versions & 1 rubygems