Kubernetes client configuration class
# File lib/kubeclient/config.rb, line 20 def initialize(kcfg, kcfg_path) @kcfg = kcfg @kcfg_path = kcfg_path fail 'Unknown kubeconfig version' if @kcfg['apiVersion'] != 'v1' end
# File lib/kubeclient/config.rb, line 26 def self.read(filename) Config.new(YAML.load_file(filename), File.dirname(filename)) end
# File lib/kubeclient/config.rb, line 34 def context(context_name = nil) cluster, user = fetch_context(context_name || @kcfg['current-context']) ca_cert_data = fetch_cluster_ca_data(cluster) client_cert_data = fetch_user_cert_data(user) client_key_data = fetch_user_key_data(user) auth_options = fetch_user_auth_options(user) ssl_options = {} if !ca_cert_data.nil? cert_store = OpenSSL::X509::Store.new cert_store.add_cert(OpenSSL::X509::Certificate.new(ca_cert_data)) ssl_options[:verify_ssl] = OpenSSL::SSL::VERIFY_PEER ssl_options[:cert_store] = cert_store else ssl_options[:verify_ssl] = OpenSSL::SSL::VERIFY_NONE end unless client_cert_data.nil? ssl_options[:client_cert] = OpenSSL::X509::Certificate.new(client_cert_data) end unless client_key_data.nil? ssl_options[:client_key] = OpenSSL::PKey.read(client_key_data) end Context.new(cluster['server'], @kcfg['apiVersion'], ssl_options, auth_options) end
# File lib/kubeclient/config.rb, line 30 def contexts @kcfg['contexts'].map { |x| x['name'] } end
# File lib/kubeclient/config.rb, line 66 def ext_file_path(path) Pathname(path).absolute? ? path : File.join(@kcfg_path, path) end
# File lib/kubeclient/config.rb, line 90 def fetch_cluster_ca_data(cluster) if cluster.key?('certificate-authority') return File.read(ext_file_path(cluster['certificate-authority'])) elsif cluster.key?('certificate-authority-data') return Base64.decode64(cluster['certificate-authority-data']) end end
# File lib/kubeclient/config.rb, line 70 def fetch_context(context_name) context = @kcfg['contexts'].detect do |x| break x['context'] if x['name'] == context_name end fail "Unknown context #{context_name}" unless context cluster = @kcfg['clusters'].detect do |x| break x['cluster'] if x['name'] == context['cluster'] end fail "Unknown cluster #{context['cluster']}" unless cluster user = @kcfg['users'].detect do |x| break x['user'] if x['name'] == context['user'] end || {} [cluster, user] end
# File lib/kubeclient/config.rb, line 114 def fetch_user_auth_options(user) options = {} if user.key?('token') options[:bearer_token] = user['token'] else %w(username password).each do |attr| options[attr.to_sym] = user[attr] if user.key?(attr) end end options end
# File lib/kubeclient/config.rb, line 98 def fetch_user_cert_data(user) if user.key?('client-certificate') return File.read(ext_file_path(user['client-certificate'])) elsif user.key?('client-certificate-data') return Base64.decode64(user['client-certificate-data']) end end
# File lib/kubeclient/config.rb, line 106 def fetch_user_key_data(user) if user.key?('client-key') return File.read(ext_file_path(user['client-key'])) elsif user.key?('client-key-data') return Base64.decode64(user['client-key-data']) end end