How to use Google People V1 API using service acccount in Ruby.

readme.md

How to use Google People V1 API using service acccount in Ruby.

1. You need Google Workplace Account
2. Create/add contacts to the account
3. Create Service Account from the google workplace account cloud console.
4. Enable the People API
5. Add the service account to the google workplace Domain Wide Delegation
6. Update the code to your settings.
7. Run the code

people.rb

require 'google/apis/people_v1'
require 'googleauth'

# Set up authorization
scopes = ['https://www.googleapis.com/auth/contacts']
credentials = Google::Auth::ServiceAccountCredentials.make_creds(
  json_key_io: File.open('g_suite_service_account.json'),
  scope: scopes,
)
credentials.sub = 'the_account_you_want_to_use@email.com'

# Authorize the client
client = Google::Apis::PeopleV1::PeopleServiceService.new
client.authorization = credentials

response = client.list_person_connections(
  'people/me',
  page_size: 100,
  person_fields: 'names,emailAddresses'
)

response.connections.each do |connection|
  puts connection.inspect
end