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session.rb
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# Author: Hiroshi Ichikawa <http://gimite.net/>
# The license of this source is "New BSD Licence"
require 'cgi'
require 'stringio'
require 'rubygems'
require 'nokogiri'
require 'googleauth'
require 'google_drive/util'
require 'google_drive/api_client_fetcher'
require 'google_drive/error'
require 'google_drive/authentication_error'
require 'google_drive/response_code_error'
require 'google_drive/spreadsheet'
require 'google_drive/worksheet'
require 'google_drive/collection'
require 'google_drive/file'
require 'google_drive/config'
require 'google_drive/access_token_credentials'
module GoogleDrive
# A session for Google Drive operations.
#
# Use from_credentials, from_access_token, from_service_account_key or
# from_config class method to construct a GoogleDrive::Session object.
class Session
include(Util)
extend(Util)
DEFAULT_SCOPE = [
'https://www.googleapis.com/auth/drive',
'https://spreadsheets.google.com/feeds/'
].freeze
# Equivalent of either from_credentials or from_access_token.
def self.login_with_oauth(credentials_or_access_token, proxy = nil)
Session.new(credentials_or_access_token, proxy)
end
# Creates a dummy GoogleDrive::Session object for testing.
def self.new_dummy
Session.new(nil)
end
# Constructs a GoogleDrive::Session object from OAuth2 credentials such as
# Google::Auth::UserRefreshCredentials.
#
# See
# https://github.com/gimite/google-drive-ruby/blob/master/doc/authorization.md
# for a usage example.
#
# See from_config documentation for an explanation of client_options and
# request_options.
def self.from_credentials(credentials, client_options = nil, request_options = nil)
Session.new(credentials, nil, client_options, request_options)
end
# Constructs a GoogleDrive::Session object from OAuth2 access token string.
#
# See from_config documentation for an explanation of client_options and
# request_options.
def self.from_access_token(access_token, client_options = nil, request_options = nil)
Session.new(access_token, nil, client_options, request_options)
end
# Constructs a GoogleDrive::Session object from a service account key JSON.
#
# You can pass either the path to a JSON file, or an IO-like object with the
# JSON.
#
# See
# https://github.com/gimite/google-drive-ruby/blob/master/doc/authorization.md
# for a usage example.
#
# As with from_config, you can configure Google API client behavior with
# +client_options+ and +request_options+. Unlike in from_config, these
# are passed as positional arguments.
def self.from_service_account_key(
json_key_path_or_io, scope = DEFAULT_SCOPE, client_options = nil,
request_options = nil
)
if json_key_path_or_io.is_a?(String)
open(json_key_path_or_io) do |f|
from_service_account_key(f, scope, client_options, request_options)
end
else
credentials = Google::Auth::ServiceAccountCredentials.make_creds(
json_key_io: json_key_path_or_io, scope: scope
)
Session.new(credentials, nil, client_options, request_options)
end
end
# Returns GoogleDrive::Session constructed from a config JSON file at
# +config+, potenially modified with +options+.
#
# +config+ is the path to the config file.
#
# This will prompt the credential via command line for the first time and
# save it to +config+ for later usages.
#
# See
# https://github.com/gimite/google-drive-ruby/blob/master/doc/authorization.md
# for a usage example.
#
# You can also provide a config object that must respond to:
# client_id
# client_secret
# refesh_token
# refresh_token=
# scope
# scope=
# save
#
# +options+ is a hash which may contain the following keys:
# client_secret: if present, this will overwrite config.client_secret
# client_id: if present, this will overwrite config.client_id
# client_options: a hash or ::Google::Apis::ClientOptions. See
# https://www.rubydoc.info/github/google/google-api-ruby-client/Google/Apis/ClientOptions
# for an explanation of legal sub-fields.
# request_options: a hash or ::Google::Apis::RequestOptions. See
# https://www.rubydoc.info/github/google/google-api-ruby-client/Google/Apis/RequestOptions
# for an explanation of legal sub-fields.
def self.from_config(config, options = {})
if config.is_a?(String)
config_path = config
config = Config.new(config_path)
if config.type == 'service_account'
return from_service_account_key(
config_path, options[:scope] || DEFAULT_SCOPE, options[:client_options],
options[:request_options]
)
end
end
config.scope ||= DEFAULT_SCOPE
if options[:client_id] && options[:client_secret]
config.client_id = options[:client_id]
config.client_secret = options[:client_secret]
end
if !config.client_id || !config.client_secret
raise(
ArgumentError,
'client_id or client_secret is missing in the config. Follow ' \
'https://github.com/gimite/google-drive-ruby/blob/master/doc/authorization.md ' \
'to provide a valid config. google_drive library no longer provides ' \
'the default credential due to a limitation of Google API.'
)
end
credentials = Google::Auth::UserRefreshCredentials.new(
client_id: config.client_id,
client_secret: config.client_secret,
scope: config.scope,
redirect_uri: 'urn:ietf:wg:oauth:2.0:oob'
)
if config.refresh_token
credentials.refresh_token = config.refresh_token
credentials.fetch_access_token!
else
$stderr.print(
format("\n1. Open this page:\n%s\n\n", credentials.authorization_uri)
)
$stderr.print('2. Enter the authorization code shown in the page: ')
credentials.code = $stdin.gets.chomp
credentials.fetch_access_token!
config.refresh_token = credentials.refresh_token
end
config.save
Session.new(
credentials, nil, options[:client_options], options[:request_options]
)
end
def initialize(
credentials_or_access_token, proxy = nil, client_options = nil,
request_options = nil
)
if proxy
raise(
ArgumentError,
'Specifying a proxy object is no longer supported. ' \
'Set ENV["http_proxy"] instead.'
)
end
if credentials_or_access_token
if credentials_or_access_token.is_a?(String)
credentials = AccessTokenCredentials.new(credentials_or_access_token)
# Equivalent of credentials_or_access_token.is_a?(OAuth2::AccessToken),
# without adding dependency to "oauth2" library.
elsif credentials_or_access_token
.class
.ancestors
.any? { |m| m.name == 'OAuth2::AccessToken' }
credentials =
AccessTokenCredentials.new(credentials_or_access_token.token)
else
credentials = credentials_or_access_token
end
@fetcher = ApiClientFetcher.new(
credentials, client_options, request_options
)
else
@fetcher = nil
end
end
# Proc or Method called when authentication has failed.
# When this function returns +true+, it tries again.
attr_accessor :on_auth_fail
# Returns an instance of Google::Apis::DriveV3::DriveService.
def drive_service
@fetcher.drive
end
alias drive drive_service
# Returns an instance of Google::Apis::SheetsV4::SheetsService.
def sheets_service
@fetcher.sheets
end
# Returns list of files for the user as array of GoogleDrive::File or its
# subclass. You can specify parameters documented at
# https://developers.google.com/drive/v3/web/search-parameters
#
# e.g.
# session.files
# session.files(q: "name = 'hoge'")
# # Same as above with a placeholder
# session.files(q: ["name = ?", "hoge"])
#
# By default, it returns the first 100 files. You can get all files by
# calling with a block:
# session.files do |file|
# p file
# end
# Or passing "pageToken" parameter:
# page_token = nil
# begin
# (files, page_token) = session.files(page_token: page_token)
# p files
# end while page_token
def files(params = {}, &block)
params = convert_params(params)
execute_paged!(
method: drive_service.method(:list_files),
parameters: { fields: '*', supports_all_drives: true, include_items_from_all_drives: true }.merge(params),
items_method_name: :files,
converter: proc { |af| wrap_api_file(af) },
&block
)
end
# Returns a file (including a spreadsheet and a folder) whose title exactly
# matches +title+.
#
# Returns an instance of GoogleDrive::File or its subclass
# (GoogleDrive::Spreadsheet, GoogleDrive::Collection). Returns nil if not
# found. If multiple files with the +title+ are found, returns one of them.
#
# If given an Array, traverses folders by title. e.g.:
# session.file_by_title(
# ["myfolder", "mysubfolder/even/w/slash", "myfile"])
def file_by_title(title)
if title.is_a?(Array)
root_collection.file_by_title(title)
else
files(q: ['name = ?', title], page_size: 1)[0]
end
end
alias file_by_name file_by_title
# Returns a file (including a spreadsheet and a folder) with a given +id+.
#
# Returns an instance of GoogleDrive::File or its subclass
# (GoogleDrive::Spreadsheet, GoogleDrive::Collection).
def file_by_id(id)
api_file = drive_service.get_file(id, fields: '*', supports_all_drives: true)
wrap_api_file(api_file)
end
# Returns a file (including a spreadsheet and a folder) with a given +url+.
# +url+ must be the URL of the page you open to access a
# document/spreadsheet in your browser.
#
# Returns an instance of GoogleDrive::File or its subclass
# (GoogleDrive::Spreadsheet, GoogleDrive::Collection).
def file_by_url(url)
file_by_id(url_to_id(url))
end
# Returns list of spreadsheets for the user as array of
# GoogleDrive::Spreadsheet.
# You can specify parameters documented at
# https://developers.google.com/drive/v3/web/search-parameters
#
# e.g.
# session.spreadsheets
# session.spreadsheets(q: "name = 'hoge'")
# # Same as above with a placeholder
# session.spreadsheets(q: ["name = ?", "hoge"])
#
# By default, it returns the first 100 spreadsheets. See document of files
# method for how to get all spreadsheets.
def spreadsheets(params = {}, &block)
params = convert_params(params)
query = construct_and_query(
[
"mimeType = 'application/vnd.google-apps.spreadsheet'",
params[:q]
]
)
files(params.merge(q: query), &block)
end
# Returns GoogleDrive::Spreadsheet with given +key+.
#
# e.g.
# # https://docs.google.com/spreadsheets/d/1L3-kvwJblyW_TvjYD-7pE-AXxw5_bkb6S_MljuIPVL0/edit
# session.spreadsheet_by_key(
# "1L3-kvwJblyW_TvjYD-7pE-AXxw5_bkb6S_MljuIPVL0")
def spreadsheet_by_key(key)
file = file_by_id(key)
unless file.is_a?(Spreadsheet)
raise(
GoogleDrive::Error,
format('The file with the ID is not a spreadsheet: %s', key)
)
end
file
end
# Returns GoogleDrive::Spreadsheet with given +url+. You must specify either
# of:
# - URL of the page you open to access the spreadsheet in your browser
# - URL of worksheet-based feed of the spreadseet
#
# e.g.
# session.spreadsheet_by_url(
# "https://docs.google.com/spreadsheets/d/" \
# "1L3-kvwJblyW_TvjYD-7pE-AXxw5_bkb6S_MljuIPVL0/edit")
def spreadsheet_by_url(url)
file = file_by_url(url)
unless file.is_a?(Spreadsheet)
raise(
GoogleDrive::Error,
format('The file with the URL is not a spreadsheet: %s', url)
)
end
file
end
# Returns GoogleDrive::Spreadsheet with given +title+.
# Returns nil if not found. If multiple spreadsheets with the +title+ are
# found, returns one of them.
def spreadsheet_by_title(title)
spreadsheets(q: ['name = ?', title], page_size: 1)[0]
end
alias spreadsheet_by_name spreadsheet_by_title
# Returns GoogleDrive::Worksheet with given +url+.
# You must specify URL of either worksheet feed or cell-based feed of the
# worksheet.
#
# e.g.:
# # Worksheet feed URL
# session.worksheet_by_url(
# "https://spreadsheets.google.com/feeds/worksheets/" \
# "1smypkyAz4STrKO4Zkos5Z4UPUJKvvgIza32LnlQ7OGw/private/full/od7")
# # Cell-based feed URL
# session.worksheet_by_url(
# "https://spreadsheets.google.com/feeds/cells/" \
# "1smypkyAz4STrKO4Zkos5Z4UPUJKvvgIza32LnlQ7OGw/od7/private/full")
def worksheet_by_url(url)
case url
when %r{^https?://spreadsheets.google.com/feeds/worksheets/(.*)/.*/full/(.*)$}
spreadsheet_id = Regexp.last_match(1)
worksheet_feed_id = Regexp.last_match(2)
when %r{^https?://spreadsheets.google.com/feeds/cells/(.*)/(.*)/private/full(\?.*)?$}
spreadsheet_id = Regexp.last_match(1)
worksheet_feed_id = Regexp.last_match(2)
else
raise(
GoogleDrive::Error,
'URL is neither a worksheet feed URL nor a cell-based feed URL: ' \
"#{url}"
)
end
spreadsheet = spreadsheet_by_key(spreadsheet_id)
worksheet = spreadsheet.worksheets.find{ |ws| ws.worksheet_feed_id == worksheet_feed_id }
unless worksheet
raise(
GoogleDrive::Error,
"Worksheet not found for the given URL: #{url}"
)
end
worksheet
end
# Returns the root folder.
def root_collection
@root_collection ||= file_by_id('root')
end
alias root_folder root_collection
# Returns the top-level folders (direct children of the root folder).
#
# By default, it returns the first 100 folders. See document of files method
# for how to get all folders.
def collections(params = {}, &block)
root_collection.subcollections(params, &block)
end
alias folders collections
# Returns a top-level folder whose title exactly matches +title+ as
# GoogleDrive::Collection.
# Returns nil if not found. If multiple folders with the +title+ are found,
# returns one of them.
def collection_by_title(title)
root_collection.subcollection_by_title(title)
end
alias folders_by_name collection_by_title
# Returns GoogleDrive::Collection with given +url+.
#
# You must specify the URL of the page you get when you go to
# https://drive.google.com/ with your browser and open a folder.
#
# e.g.
# session.collection_by_url(
# "https://drive.google.com/drive/folders/" \
# "1u99gpfHIk08RVK5q_vXxUqkxR1r6FUJH")
def collection_by_url(url)
file = file_by_url(url)
unless file.is_a?(Collection)
raise(
GoogleDrive::Error,
format('The file with the URL is not a folder: %s', url)
)
end
file
end
alias folder_by_url collection_by_url
# Returns GoogleDrive::Collection with given +id+.
#
# e.g.
# # https://drive.google.com/drive/folders/1rPPuzAew4tO3ORc88Vz1JscPCcnrX7-J
# session.collection_by_id("1rPPuzAew4tO3ORc88Vz1JscPCcnrX7-J")
def collection_by_id(id)
file = file_by_id(id)
unless file.is_a?(Collection)
raise(
GoogleDrive::Error,
format('The file with the ID is not a folder: %s', id)
)
end
file
end
alias folder_by_id collection_by_id
# Creates a top-level folder with given title. Returns GoogleDrive::Collection
# object.
def create_collection(title, file_properties = {})
create_file(title, file_properties.merge(mime_type: 'application/vnd.google-apps.folder'))
end
alias create_folder create_collection
# Creates a spreadsheet with given title. Returns GoogleDrive::Spreadsheet
# object.
#
# e.g.
# session.create_spreadsheet("My new sheet")
def create_spreadsheet(title = 'Untitled', file_properties = {})
create_file(title, file_properties.merge(mime_type: 'application/vnd.google-apps.spreadsheet'))
end
# Creates a file with given title and properties. Returns objects
# with the following types: GoogleDrive::Spreadsheet, GoogleDrive::File,
# GoogleDrive::Collection
#
# You can pass a MIME Type using the file_properties-function parameter,
# for example: create_file('Document Title', mime_type: 'application/vnd.google-apps.document')
#
# A list of available Drive MIME Types can be found here:
# https://developers.google.com/drive/v3/web/mime-types
def create_file(title, file_properties = {})
file_metadata = {
name: title,
}.merge(file_properties)
file = drive_service.create_file(
file_metadata, fields: '*', supports_all_drives: true
)
wrap_api_file(file)
end
# Uploads a file with the given +title+ and +content+.
# Returns a GoogleSpreadsheet::File object.
#
# e.g.
# # Uploads and converts to a Google Docs document:
# session.upload_from_string(
# "Hello world.", "Hello", content_type: "text/plain")
#
# # Uploads without conversion:
# session.upload_from_string(
# "Hello world.", "Hello", content_type: "text/plain", convert: false)
#
# # Uploads and converts to a Google Spreadsheet:
# session.upload_from_string(
# "hoge\tfoo\n", "Hoge", content_type: "text/tab-separated-values")
# session.upload_from_string(
# "hoge,foo\n", "Hoge", content_type: "text/tsv")
def upload_from_string(content, title = 'Untitled', params = {})
upload_from_source(StringIO.new(content), title, params)
end
# Uploads a local file.
# Returns a GoogleSpreadsheet::File object.
#
# e.g.
# # Uploads a text file and converts to a Google Docs document:
# session.upload_from_file("/path/to/hoge.txt")
#
# # Uploads without conversion:
# session.upload_from_file("/path/to/hoge.txt", "Hoge", convert: false)
#
# # Uploads with explicit content type:
# session.upload_from_file(
# "/path/to/hoge", "Hoge", content_type: "text/plain")
#
# # Uploads a text file and converts to a Google Spreadsheet:
# session.upload_from_file("/path/to/hoge.csv", "Hoge")
# session.upload_from_file(
# "/path/to/hoge", "Hoge", content_type: "text/csv")
def upload_from_file(path, title = nil, params = {})
# TODO: Add a feature to upload to a folder.
file_name = ::File.basename(path)
default_content_type =
EXT_TO_CONTENT_TYPE[::File.extname(file_name).downcase] ||
'application/octet-stream'
upload_from_source(
path,
title || file_name,
{ content_type: default_content_type }.merge(params)
)
end
# Uploads a file. Reads content from +io+.
# Returns a GoogleDrive::File object.
def upload_from_io(io, title = 'Untitled', params = {})
upload_from_source(io, title, params)
end
# @api private
def wrap_api_file(api_file)
case api_file.mime_type
when 'application/vnd.google-apps.folder'
Collection.new(self, api_file)
when 'application/vnd.google-apps.spreadsheet'
Spreadsheet.new(self, api_file)
else
File.new(self, api_file)
end
end
# @api private
def execute_paged!(opts, &block)
if block
page_token = nil
loop do
parameters =
(opts[:parameters] || {}).merge(page_token: page_token)
(items, page_token) =
execute_paged!(opts.merge(parameters: parameters))
items.each(&block)
break unless page_token
end
elsif opts[:parameters] && opts[:parameters].key?(:page_token)
response = opts[:method].call(opts[:parameters])
items = response.__send__(opts[:items_method_name]).map do |item|
opts[:converter] ? opts[:converter].call(item) : item
end
[items, response.next_page_token]
else
parameters = (opts[:parameters] || {}).merge(page_token: nil)
(items,) = execute_paged!(opts.merge(parameters: parameters))
items
end
end
# @api private
def request(method, url, params = {})
# Always uses HTTPS.
url = url.gsub(%r{^http://}, 'https://')
data = params[:data]
auth = params[:auth] || :wise
response_type = params[:response_type] || :xml
extra_header = if params[:header]
params[:header]
elsif data
{
'Content-Type' => 'application/atom+xml;charset=utf-8'
}
else
{}
end
extra_header = { 'GData-Version' => '3.0' }.merge(extra_header)
loop do
response = @fetcher.request_raw(method, url, data, extra_header, auth)
next if response.code == '401' && @on_auth_fail && @on_auth_fail.call
unless response.code =~ /^2/
raise(
(response.code == '401' ? AuthenticationError : ResponseCodeError)
.new(response.code, response.body, method, url)
)
end
return convert_response(response, response_type)
end
end
def inspect
format('#<%p:0x%x>', self.class, object_id)
end
private
def upload_from_source(source, title, params = {})
api_params = {
upload_source: source,
content_type: 'application/octet-stream',
fields: '*',
supports_all_drives: true
}
for k, v in params
unless %i[convert convert_mime_type parents].include?(k)
api_params[k] = v
end
end
file_metadata = { name: title }
content_type = api_params[:content_type]
if params[:convert_mime_type]
file_metadata[:mime_type] = params[:convert_mime_type]
elsif params.fetch(:convert, true) &&
IMPORTABLE_CONTENT_TYPE_MAP.key?(content_type)
file_metadata[:mime_type] = IMPORTABLE_CONTENT_TYPE_MAP[content_type]
end
file_metadata[:parents] = params[:parents] if params[:parents]
file = drive_service.create_file(file_metadata, api_params)
wrap_api_file(file)
end
def convert_response(response, response_type)
case response_type
when :xml
Nokogiri.XML(response.body)
when :raw
response.body
when :response
response
else
raise(GoogleDrive::Error,
format('Unknown params[:response_type]: %s', response_type))
end
end
def url_to_id(url)
uri = URI.parse(url)
if ['spreadsheets.google.com', 'docs.google.com', 'drive.google.com']
.include?(uri.host)
case uri.path
# Document feed.
when /^\/feeds\/\w+\/private\/full\/\w+%3A(.*)$/
return Regexp.last_match(1)
# Worksheets feed of a spreadsheet.
when /^\/feeds\/worksheets\/([^\/]+)/
return Regexp.last_match(1)
# Human-readable new spreadsheet/document.
when /\/d\/([^\/]+)/
return Regexp.last_match(1)
# Human-readable new folder page.
when /^\/drive\/[^\/]+\/([^\/]+)/
return Regexp.last_match(1)
# Human-readable old folder view.
when /\/folderview$/
if (uri.query || '').split(/&/).find { |s| s =~ /^id=(.*)$/ }
return Regexp.last_match(1)
end
# Human-readable old spreadsheet.
when /\/ccc$/
if (uri.query || '').split(/&/).find { |s| s =~ /^key=(.*)$/ }
return Regexp.last_match(1)
end
end
case uri.fragment
# Human-readable old folder page.
when /^folders\/(.+)$/
return Regexp.last_match(1)
end
end
raise(
GoogleDrive::Error,
format('The given URL is not a known Google Drive URL: %s', url)
)
end
end
end