class Occi::Api::Client::Http::AuthnPlugins::Keystone
Constants
- KEYSTONE_URI_REGEXP
- KEYSTONE_VERSION_REGEXP
Public Instance Methods
authenticate(options = {})
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# File lib/occi/api/client/http/authn_plugins/keystone.rb, line 21 def authenticate(options = {}) # OCCI-OS doesn't support HEAD method! response = @env_ref.class.get "#{@env_ref.endpoint.to_s}/-/" raise ::Occi::Api::Client::Errors::AuthnError, "Authentication failed with code #{response.code.to_s}!" unless response.success? end
setup(options = {})
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# File lib/occi/api/client/http/authn_plugins/keystone.rb, line 10 def setup(options = {}) # get Keystone URL if possible set_keystone_base_url # discover Keystone API version set_auth_token ENV['ROCCI_CLIENT_KEYSTONE_TENANT'] raise ::Occi::Api::Client::Errors::AuthnError, "Unable to get a tenant from Keystone, fallback failed!" if @env_ref.class.headers['X-Auth-Token'].blank? end
Private Instance Methods
process_headers(response)
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# File lib/occi/api/client/http/authn_plugins/keystone.rb, line 41 def process_headers(response) authN_header = response.headers['www-authenticate'] if authN_header.blank? raise ::Occi::Api::Client::Errors::AuthnError, "Response does not contain the www-authenticate header, fallback failed!" end match = KEYSTONE_URI_REGEXP.match(authN_header) raise ::Occi::Api::Client::Errors::AuthnError, "Unable to get Keystone's URL from the response, fallback failed!" unless match && match[2] @keystone_url = match[2] end
set_auth_token(tenant = nil)
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# File lib/occi/api/client/http/authn_plugins/keystone.rb, line 56 def set_auth_token(tenant = nil) response = @env_ref.class.get @keystone_url Occi::Api::Log.debug response.inspect raise ::Occi::Api::Client::Errors::AuthnError, "Unable to get Keystone API version from the response, fallback failed!" if (400..599).include?(response.code) # multiple choices, sort them by version id if response.code == 300 versions = response['versions']['values'].sort_by { |v| v['id']} else # assume a single version versions = [response['version']] end versions.each do |v| match = KEYSTONE_VERSION_REGEXP.match(v['id']) raise ::Occi::Api::Client::Errors::AuthnError, "Unable to get Keystone API version from the response, fallback failed!" unless match && match[1] if match[1] == '2' handler_class = KeystoneV2 elsif match[1] == '3' handler_class = KeystoneV3 end v['links'].each do |link| begin if link['rel'] == 'self' keystone_url = link['href'].chomp('/') keystone_handler = handler_class.new(keystone_url, @env_ref, @options) token = keystone_handler.set_auth_token(tenant) # found a working keystone, stop looking return end rescue ::Occi::Api::Client::Errors::AuthnError # ignore and try with next link end end end end
set_keystone_base_url()
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# File lib/occi/api/client/http/authn_plugins/keystone.rb, line 30 def set_keystone_base_url response = @env_ref.class.get "#{@env_ref.endpoint.to_s}/-/" Occi::Api::Log.debug response.inspect return if response.success? raise ::Occi::Api::Client::Errors::AuthnError, "Keystone AuthN failed with #{response.code.to_s}!" unless response.code == 401 process_headers(response) end