Class: Embulk::Output::Bigquery::GoogleClient

Inherits:
Object
  • Object
show all
Defined in:
lib/embulk/output/bigquery/google_client.rb

Direct Known Subclasses

BigqueryClient, GcsClient

Instance Method Summary collapse

Constructor Details

#initialize(task, scope, client_class) ⇒ GoogleClient

Returns a new instance of GoogleClient.



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# File 'lib/embulk/output/bigquery/google_client.rb', line 11

def initialize(task, scope, client_class)
  @task = task
  @scope = scope
  @client_class = client_class
end

Instance Method Details

#client ⇒ Object 



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# File 'lib/embulk/output/bigquery/google_client.rb', line 17

def client
  return @cached_client if @cached_client && @cached_client_expiration > Time.now

  client = @client_class.new
  client.client_options.application_name = @task['application_name']
  client.request_options.retries = @task['retries']
  client.request_options.timeout_sec = @task['timeout_sec']
  client.request_options.open_timeout_sec = @task['open_timeout_sec']
  Embulk.logger.debug { "embulk-output-bigquery: client_options: #{client.client_options.to_h}" }
  Embulk.logger.debug { "embulk-output-bigquery: request_options: #{client.request_options.to_h}" }

  case @task['auth_method']
  when 'private_key'
    private_key_passphrase = 'notasecret'
    key = Google::APIClient::KeyUtils.load_from_pkcs12(@task['p12_keyfile'], private_key_passphrase)
    auth = Signet::OAuth2::Client.new(
      token_credential_uri: "https://accounts.google.com/o/oauth2/token",
      audience: "https://accounts.google.com/o/oauth2/token",
      scope: @scope,
      issuer: @task['service_account_email'],
      signing_key: key)

  when 'compute_engine'
    auth = Google::Auth::GCECredentials.new

  when 'json_key'
    json_key = @task['json_keyfile']
    if File.exist?(json_key)
      auth = File.open(json_key) do |f|
        Google::Auth::ServiceAccountCredentials.make_creds(json_key_io: f, scope: @scope)
      end
    else
      key = StringIO.new(json_key)
      auth = Google::Auth::ServiceAccountCredentials.make_creds(json_key_io: key, scope: @scope)
    end

  when 'application_default'
    auth = Google::Auth.get_application_default([@scope])

  else
    raise ConfigError, "Unknown auth method: #{@task['auth_method']}"
  end

  client.authorization = auth

  @cached_client_expiration = Time.now + 1800
  @cached_client = client
end