4 <dt>Homepage</dt><dd><a href="http://www.github.com/google/google-api-ruby-client">http://www.github.com/google/google-api-ruby-client</a></dd>
5 <dt>Authors</dt><dd>Bob Aman, <a href="mailto:sbazyl@google.com">Steven Bazyl</a></dd>
6 <dt>Copyright</dt><dd>Copyright © 2011 Google, Inc.</dd>
7 <dt>License</dt><dd>Apache 2.0</dd>
10 [![Build Status](https://secure.travis-ci.org/google/google-api-ruby-client.png)](http://travis-ci.org/google/google-api-ruby-client)
11 [![Dependency Status](https://gemnasium.com/google/google-api-ruby-client.png)](https://gemnasium.com/google/google-api-ruby-client)
15 The Google API Ruby Client makes it trivial to discover and access supported
20 Be sure `https://rubygems.org/` is in your gem sources.
22 For normal client usage, this is sufficient:
25 $ gem install google-api-client
31 require 'google/api_client'
32 require 'google/api_client/client_secrets'
33 require 'google/api_client/auth/installed_app'
35 # Initialize the client.
36 client = Google::APIClient.new(
37 :application_name => 'Example Ruby application',
38 :application_version => '1.0.0'
41 # Initialize Google+ API. Note this will make a request to the
42 # discovery service every time, so be sure to use serialization
43 # in your production code. Check the samples for more details.
44 plus = client.discovered_api('plus')
46 # Load client secrets from your client_secrets.json.
47 client_secrets = Google::APIClient::ClientSecrets.load
49 # Run installed application flow. Check the samples for a more
50 # complete example that saves the credentials between runs.
51 flow = Google::APIClient::InstalledAppFlow.new(
52 :client_id => client_secrets.client_id,
53 :client_secret => client_secrets.client_secret,
54 :scope => ['https://www.googleapis.com/auth/plus.me']
56 client.authorization = flow.authorize
59 result = client.execute(
60 :api_method => plus.activities.list,
61 :parameters => {'collection' => 'public', 'userId' => 'me'}
71 To take full advantage of the client, load API definitions prior to use. To load an API:
74 urlshortener = client.discovered_api('urlshortener')
77 Specific versions of the API can be loaded as well:
80 drive = client.discovered_api('drive', 'v2')
83 Locally cached discovery documents may be used as well. To load an API from a local file:
86 doc = File.read('my-api.json')
87 my_api = client.register_discovery_document('myapi', 'v1', doc)
92 Most interactions with Google APIs require users to authorize applications via OAuth 2.0. The client library uses [Signet](https://github.com/google/signet) to handle most aspects of authorization. For additional details about Google's OAuth support, see [Google Developers](https://developers.google.com/accounts/docs/OAuth2).
94 Credentials can be managed at the connection level, as shown, or supplied on a per-request basis when calling `execute`.
96 For server-to-server interactions, like those between a web application and Google Cloud Storage, Prediction, or BigQuery APIs, use service accounts.
99 key = Google::APIClient::KeyUtils.load_from_pkcs12('client.p12', 'notasecret')
100 client.authorization = Signet::OAuth2::Client.new(
101 :token_credential_uri => 'https://accounts.google.com/o/oauth2/token',
102 :audience => 'https://accounts.google.com/o/oauth2/token',
103 :scope => 'https://www.googleapis.com/auth/prediction',
104 :issuer => '123456-abcdef@developer.gserviceaccount.com',
106 client.authorization.fetch_access_token!
110 Service accounts are also used for delegation in Google Apps domains. The target user for impersonation is specified by setting the `:person` parameter to the user's email address
111 in the credentials. Detailed instructions on how to enable delegation for your domain can be found at [developers.google.com](https://developers.google.com/drive/delegation).
114 ### Batching Requests
116 Some Google APIs support batching requests into a single HTTP request. Use `Google::APIClient::BatchRequest`
117 to bundle multiple requests together.
122 client = Google::APIClient.new
123 urlshortener = client.discovered_api('urlshortner')
125 batch = Google::APIClient::BatchRequest.new do |result|
129 batch.add(:api_method => urlshortener.url.insert,
130 :body_object => { 'longUrl' => 'http://example.com/foo' })
131 batch.add(:api_method => urlshortener.url.insert,
132 :body_object => { 'longUrl' => 'http://example.com/bar' })
133 client.execute(batch)
136 Blocks for handling responses can be specified either at the batch level or when adding an individual API call. For example:
139 batch.add(:api_method=>urlshortener.url.insert, :body_object => { 'longUrl' => 'http://example.com/bar' }) do |result|
146 For APIs that support file uploads, use `Google::APIClient::UploadIO` to load the stream. Both multipart and resumable
147 uploads can be used. For example, to upload a file to Google Drive using multipart
150 drive = client.discovered_api('drive', 'v2')
152 media = Google::APIClient::UploadIO.new('mymovie.m4v', 'video/mp4')
154 'title' => 'My movie',
155 'description' => 'The best home movie ever made'
157 client.execute(:api_method => drive.files.insert,
158 :parameters => { 'uploadType' => 'multipart' },
159 :body_object => metadata,
163 To use resumable uploads, change the `uploadType` parameter to `resumable`. To check the status of the upload
164 and continue if necessary, check `result.resumable_upload`.
167 client.execute(:api_method => drive.files.insert,
168 :parameters => { 'uploadType' => 'resumable' },
169 :body_object => metadata,
171 upload = result.resumable_upload
175 client.execute(upload)
181 Included with the gem is a command line interface for working with Google APIs.
185 google-api oauth-2-login --client-id='...' --client-secret='...' --scope="https://www.googleapis.com/auth/plus.me"
187 # List the signed-in user's activities
188 google-api execute plus.activities.list --api=plus -- userId="me" collection="public"
190 # Start an interactive API session
192 >> plus = $client.discovered_api('plus')
193 >> $client.execute(plus.activities.list, {'userId' => 'me', 'collection' => 'public'})
194 => # returns a response from the API
197 For more information, use `google-api --help`
201 See the full list of [samples on Github](https://github.com/google/google-api-ruby-client-samples).
206 Please [report bugs at the project on Github](https://github.com/google/google-api-ruby-client/issues). Don't hesitate to [ask questions](http://stackoverflow.com/questions/tagged/google-api-ruby-client) about the client or APIs on [StackOverflow](http://stackoverflow.com).