google-auth-library-ruby/lib/googleauth/signet.rb

122 lines
4.0 KiB
Ruby

# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
require "signet/oauth_2/client"
module Signet
# OAuth2 supports OAuth2 authentication.
module OAuth2
AUTH_METADATA_KEY = :authorization
# Signet::OAuth2::Client creates an OAuth2 client
#
# This reopens Client to add #apply and #apply! methods which update a
# hash with the fetched authentication token.
class Client
def configure_connection options
@connection_info =
options[:connection_builder] || options[:default_connection]
self
end
# Updates a_hash updated with the authentication token
def apply! a_hash, opts = {}
# fetch the access token there is currently not one, or if the client
# has expired
fetch_access_token! opts if access_token.nil? || expires_within?(60)
a_hash[AUTH_METADATA_KEY] = "Bearer #{access_token}"
end
# Returns a clone of a_hash updated with the authentication token
def apply a_hash, opts = {}
a_copy = a_hash.clone
apply! a_copy, opts
a_copy
end
# Returns a reference to the #apply method, suitable for passing as
# a closure
def updater_proc
lambda(&method(:apply))
end
def on_refresh &block
@refresh_listeners ||= []
@refresh_listeners << block
end
alias orig_fetch_access_token! fetch_access_token!
def fetch_access_token! options = {}
unless options[:connection]
connection = build_default_connection
options = options.merge connection: connection if connection
end
info = orig_fetch_access_token! options
notify_refresh_listeners
info
end
def notify_refresh_listeners
listeners = @refresh_listeners || []
listeners.each do |block|
block.call self
end
end
def build_default_connection
if !defined?(@connection_info)
nil
elsif @connection_info.respond_to? :call
@connection_info.call
else
@connection_info
end
end
def retry_with_error max_retry_count = 5
retry_count = 0
begin
yield
rescue StandardError => e
raise e if e.is_a?(Signet::AuthorizationError) || e.is_a?(Signet::ParseError)
if retry_count < max_retry_count
retry_count += 1
sleep retry_count * 0.3
retry
else
msg = "Unexpected error: #{e.inspect}"
raise Signet::AuthorizationError, msg
end
end
end
end
end
end