Module: EndPointBlank::Commands::EndpointAuthorizeMethods::ClassMethods

Defined in:
lib/end_point_blank/commands/endpoint_authorize.rb

Instance Method Summary collapse

Instance Method Details

#authorize(request) ⇒ Object 



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# File 'lib/end_point_blank/commands/endpoint_authorize.rb', line 18

def authorize(request)
  client_auth = request.headers['Authorization'].to_s
  method      = request.request_method
  path        = request.route_uri_pattern.to_s.gsub(/\([^)]*\)/, '')
  app_name    = Configuration.instance.app_name
  # The version is part of the key because authorization is decided per
  # endpoint version, and so is the deprecation carried back with it.
  # Without it, two callers on different versions of the same route share
  # one entry: whichever authorizes first decides both, so a client on a
  # deprecated version can get no warning, or one on a current version
  # can be told it is retiring.
  version     = VersionFinder.new.find(request)
  cache_key   = "epb_auth:#{client_auth}:#{path}:#{method}:#{app_name}:#{version}"

  cache = AuthenticationCache.instance
  # The cached value is the authorize response body, not a truthy
  # marker.
  #
  # It has to be, for two reasons. Callers parse the body — a cache hit
  # returning '' made JSON.parse raise, so a cached authorization became
  # a 500 rather than a fast success. And the body is where the
  # deprecation block lives; without it the Deprecation and Sunset
  # headers would appear only on cache misses, which reads as a flaky
  # feature rather than a missing one.
  if (cached = cache.retrieve(cache_key))
    return CachedResponse.new(201, cached)
  end

  # Host header only, never the forwarded chain -- see
  # BaseUrl.hostname_from_rack_env. request.host would read
  # X-Forwarded-Host unconditionally.
  hostname = EndPointBlank::BaseUrl.hostname_from_rack_env(request.env)
  body = {
    path: path,
    http_method: method,
    client_auth: client_auth,
    target_hostname: hostname,
    application: app_name,
    endpoint_version: version,
    source_ip: request.remote_ip,
    uuid: request.uuid
  }

  # Basic, not Bearer. This call is to intake, which already holds
  # this service's credential -- minting a token to present it back
  # was a hop that bought nothing. With no Bearer there is no stale
  # token, so the 401 retry that used to live here is gone: a 401 now
  # means the credential is wrong, which is worth surfacing rather
  # than retrying.
  response = Http.post(configuration.authorize_url, Authorization.header, body)

  return nil if response.nil?
  EndPointBlank.logger.info "Authentication response: #{response.status} - #{response.body}"
  if response.status == 201
    cache.store(cache_key, response.body)
  elsif response.status > 299
    EndPointBlank.logger.error "Failed to authorize endpoint: #{response.status} - #{response.body}"
  end
  response
end

#configuration ⇒ Object 



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# File 'lib/end_point_blank/commands/endpoint_authorize.rb', line 14

def configuration
  EndPointBlank::Configuration.instance
end