google-api-ruby-client/lib/google/api_client/auth/compute_service_account.rb

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# 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 'faraday'
require 'signet/oauth_2/client'
module Google
class APIClient
class ComputeServiceAccount < Signet::OAuth2::Client
def fetch_access_token(options={})
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connection = options[:connection] || Faraday.default_connection
response = connection.get 'http://metadata/computeMetadata/v1beta1/instance/service-accounts/default/token'
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Signet::OAuth2.parse_json_credentials(response.body)
end
end
end
end