# encoding: utf-8 module Eurydice module Pelops class Keyspace include ExceptionHelpers include ConsistencyLevelHelpers attr_reader :name def initialize(name, cluster, pool_name, driver) @name = name @cluster = cluster @pool_name = pool_name @driver = driver @batch_key = "#{@name}-batch-#{object_id}" end def definition(reload=false) thrift_exception_handler do @definition = nil if reload @definition ||= keyspace_manager.get_keyspace_schema(@name).to_h @definition end end def exists? keyspace_manager.keyspace_names.map { |ks_def| ks_def.name }.include?(@name) end def create!(options={}) thrift_exception_handler do ks_properties = options.merge(:name => @name) ks_properties[:strategy_class] = DEFAULT_STRATEGY_CLASS unless ks_properties.key?(:strategy_class) ks_properties[:strategy_options] = DEFAULT_STRATEGY_OPTIONS if !ks_properties.key?(:strategy_options) && ks_properties[:strategy_class] == DEFAULT_STRATEGY_CLASS ks_def = Cassandra::KsDef.from_h(ks_properties) keyspace_manager.add_keyspace(ks_def) @driver.add_pool(@pool_name, @cluster, @name) end end def drop! keyspace_manager.drop_keyspace(@name) rescue Exception => e transform_thrift_exception(e) end def column_families(reload=false) definition(reload)[:column_families].keys end def column_family(name, options={}) create = options.fetch(:create, true) cf = ColumnFamily.new(self, name) cf.create! if create && !cf.exists? cf end def create_mutator @driver.create_mutator(@pool_name) end def create_selector @driver.create_selector(@pool_name) end def create_row_deletor @driver.create_row_deletor(@pool_name) end def keyspace_manager @keyspace_manager ||= @driver.create_keyspace_manager(@cluster) end def column_family_manger @column_family_manger ||= @driver.create_column_family_manager(@cluster, @name) end def batch(options={}) if batch_in_progress? check_batch_options!(options) yield current_batch_mutator else start_batch(options) begin yield current_batch_mutator end_batch! ensure clear_batch! end end nil end private DEFAULT_STRATEGY_CLASS = Cassandra::LOCATOR_STRATEGY_CLASSES[:simple] DEFAULT_STRATEGY_OPTIONS = {:replication_factor => 1}.freeze def start_batch(options={}) thread_local_storage[@batch_key] ||= { :mutator => Mutator.new(self), :options => options } end def batch_in_progress? !!thread_local_storage[@batch_key] end def check_batch_options!(options) unless default_cl?(options) required_cl = get_cl(options) current_cl = get_cl(current_batch_options) raise BatchError, %(Inconsistent consistency levels! Current batch: #{current_cl}, required: #{required_cl}) unless required_cl == current_cl end end def current_batch_mutator thread_local_storage[@batch_key][:mutator] end def current_batch_options thread_local_storage[@batch_key][:options] end def clear_batch! thread_local_storage.delete(@batch_key) end def end_batch! current_batch_mutator.execute!(current_batch_options) end def thread_local_storage Thread.current[:eurydice_pelops] ||= {} end end end end