88 lines
2.8 KiB
Ruby
88 lines
2.8 KiB
Ruby
# Copyright 2013 Google Inc.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
require 'json'
|
|
require 'signet/oauth_2/client'
|
|
|
|
module Google
|
|
class APIClient
|
|
##
|
|
# Represents cached OAuth 2 tokens stored on local disk in a
|
|
# JSON serialized file. Meant to resemble the serialized format
|
|
# http://google-api-python-client.googlecode.com/hg/docs/epy/oauth2client.file.Storage-class.html
|
|
#
|
|
class FileStorage
|
|
# @return [String] Path to the credentials file.
|
|
attr_accessor :path
|
|
|
|
# @return [Signet::OAuth2::Client] Path to the credentials file.
|
|
attr_reader :authorization
|
|
|
|
##
|
|
# Initializes the FileStorage object.
|
|
#
|
|
# @param [String] path
|
|
# Path to the credentials file.
|
|
def initialize(path)
|
|
@path = path
|
|
self.load_credentials
|
|
end
|
|
|
|
##
|
|
# Attempt to read in credentials from the specified file.
|
|
def load_credentials
|
|
if File.exists? self.path
|
|
File.open(self.path, 'r') do |file|
|
|
cached_credentials = JSON.load(file)
|
|
@authorization = Signet::OAuth2::Client.new(cached_credentials)
|
|
@authorization.issued_at = Time.at(cached_credentials['issued_at'])
|
|
if @authorization.expired?
|
|
@authorization.fetch_access_token!
|
|
self.write_credentials
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
##
|
|
# Write the credentials to the specified file.
|
|
#
|
|
# @param [Signet::OAuth2::Client] authorization
|
|
# Optional authorization instance. If not provided, the authorization
|
|
# already associated with this instance will be written.
|
|
def write_credentials(authorization=nil)
|
|
@authorization = authorization unless authorization.nil?
|
|
|
|
unless @authorization.refresh_token.nil?
|
|
hash = {}
|
|
%w'access_token
|
|
authorization_uri
|
|
client_id
|
|
client_secret
|
|
expires_in
|
|
refresh_token
|
|
token_credential_uri'.each do |var|
|
|
hash[var] = @authorization.instance_variable_get("@#{var}")
|
|
end
|
|
hash['issued_at'] = @authorization.issued_at.to_i
|
|
|
|
File.open(self.path, 'w', 0600) do |file|
|
|
file.write(hash.to_json)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|