rubocop:disable Metrics/ClassLength TODO extract planning logic to an extra class ExecutionPlanner
all params with default values are part of private api
# File lib/dynflow/execution_plan.rb, line 69 def initialize(world, id = SecureRandom.uuid, label = nil, state = :pending, root_plan_step = nil, run_flow = Flows::Concurrence.new([]), finalize_flow = Flows::Sequence.new([]), steps = {}, started_at = nil, ended_at = nil, execution_time = nil, real_time = 0.0, execution_history = ExecutionHistory.new) @id = Type! id, String @world = Type! world, World @label = Type! label, String, NilClass self.state = state @run_flow = Type! run_flow, Flows::Abstract @finalize_flow = Type! finalize_flow, Flows::Abstract @root_plan_step = root_plan_step @started_at = Type! started_at, Time, NilClass @ended_at = Type! ended_at, Time, NilClass @execution_time = Type! execution_time, Numeric, NilClass @real_time = Type! real_time, Numeric @execution_history = Type! execution_history, ExecutionHistory steps.all? do |k, v| Type! k, Integer Type! v, Steps::Abstract end @steps = steps end
# File lib/dynflow/execution_plan.rb, line 408 def self.new_from_hash(hash, world) check_class_matching hash execution_plan_id = hash[:id] steps = steps_from_hash(hash[:step_ids], execution_plan_id, world) self.new(world, execution_plan_id, hash[:label], hash[:state], steps[hash[:root_plan_step_id]], Flows::Abstract.from_hash(hash[:run_flow]), Flows::Abstract.from_hash(hash[:finalize_flow]), steps, string_to_time(hash[:started_at]), string_to_time(hash[:ended_at]), hash[:execution_time].to_f, hash[:real_time].to_f, ExecutionHistory.new_from_hash(hash[:execution_history])) rescue => plan_exception begin world.logger.error("Could not load execution plan #{execution_plan_id}") world.logger.error(plan_exception) InvalidPlan.new(plan_exception, execution_plan_id, hash[:label], hash[:state], string_to_time(hash[:started_at]), string_to_time(hash[:ended_at]), hash[:execution_time].to_f, hash[:real_time].to_f, ExecutionHistory.new_from_hash(hash[:execution_history])) rescue => invalid_plan_exception world.logger.error("Could not even load a fallback execution plan for #{execution_plan_id}") world.logger.error(invalid_plan_exception) InvalidPlan.new(invalid_plan_exception, execution_plan_id, hash[:label], hash[:state]) end end
# File lib/dynflow/execution_plan.rb, line 54 def self.results @results ||= [:pending, :success, :warning, :error] end
# File lib/dynflow/execution_plan.rb, line 58 def self.state_transitions @state_transitions ||= { pending: [:stopped, :scheduled, :planning], scheduled: [:planning, :stopped], planning: [:planned, :stopped], planned: [:running, :stopped], running: [:paused, :stopped], paused: [:running, :stopped], stopped: [] } end
# File lib/dynflow/execution_plan.rb, line 50 def self.states @states ||= [:pending, :scheduled, :planning, :planned, :running, :paused, :stopped] end
# File lib/dynflow/execution_plan.rb, line 498 def self.steps_from_hash(step_ids, execution_plan_id, world) steps = world.persistence.load_steps(execution_plan_id, world) ids_to_steps = steps.inject({}) do |hash, step| hash[step.id.to_i] = step hash end # to make sure to we preserve the order of the steps step_ids.inject({}) do |hash, step_id| step = ids_to_steps[step_id.to_i] if step.nil? raise Errors::DataConsistencyError, "Could not load steps for execution plan #{execution_plan_id}" else hash[step_id.to_i] = step end hash end end
@return [Array<Action>] actions in Present phase
# File lib/dynflow/execution_plan.rb, line 470 def actions @actions ||= begin [entry_action] + entry_action.all_planned_actions end end
# File lib/dynflow/execution_plan.rb, line 380 def add_finalize_step(action) add_step(Steps::FinalizeStep, action.class, action.id).tap do |step| step.progress_weight = action.finalize_progress_weight finalize_flow << Flows::Atom.new(step.id) end end
# File lib/dynflow/execution_plan.rb, line 362 def add_plan_step(action_class, caller_action = nil) add_step(Steps::PlanStep, action_class, generate_action_id).tap do |step| # TODO: to be removed and preferred by the caller_action if caller_action && caller_action.execution_plan_id == self.id @steps[caller_action.plan_step_id].children << step.id end step.initialize_action(caller_action) end end
# File lib/dynflow/execution_plan.rb, line 372 def add_run_step(action) add_step(Steps::RunStep, action.class, action.id).tap do |step| step.progress_weight = action.run_progress_weight @dependency_graph.add_dependencies(step, action) current_run_flow.add_and_resolve(@dependency_graph, Flows::Atom.new(step.id)) end end
# File lib/dynflow/execution_plan.rb, line 356 def add_scheduling_step(action_class, caller_action = nil) add_step(Steps::PlanStep, action_class, generate_action_id, :scheduling).tap do |step| step.initialize_action(caller_action) end end
# File lib/dynflow/execution_plan.rb, line 476 def caller_execution_plan_id entry_action.caller_execution_plan_id end
sends the cancel event to all currently running and cancellable steps. if the plan is just scheduled, it cancels it (and returns an one-item array with the future value of the cancel result)
# File lib/dynflow/execution_plan.rb, line 272 def cancel(force = false) if state == :scheduled [Concurrent.future.tap { |f| f.success delay_record.cancel }] else event = force ? ::Dynflow::Action::Cancellable::Abort : ::Dynflow::Action::Cancellable::Cancel steps_to_cancel.map do |step| world.event(id, step.id, event) end end end
# File lib/dynflow/execution_plan.rb, line 283 def cancellable? return true if state == :scheduled return false unless state == :running steps_to_cancel.any? end
# File lib/dynflow/execution_plan.rb, line 446 def compute_execution_time self.steps.values.reduce(0) do |execution_time, step| execution_time + (step.execution_time || 0) end end
# File lib/dynflow/execution_plan.rb, line 332 def current_run_flow @run_flow_stack.last end
# File lib/dynflow/execution_plan.rb, line 220 def delay(caller_action, action_class, delay_options, *args) save @root_plan_step = add_scheduling_step(action_class, caller_action) execution_history.add("delay", @world.id) serializer = root_plan_step.delay(delay_options, args) delayed_plan = DelayedPlan.new(@world, id, delay_options[:start_at], delay_options.fetch(:start_before, nil), serializer) persistence.save_delayed_plan(delayed_plan) ensure update_state(error? ? :stopped : :scheduled) end
# File lib/dynflow/execution_plan.rb, line 235 def delay_record @delay_record ||= persistence.load_delayed_plan(id) end
# File lib/dynflow/execution_plan.rb, line 465 def entry_action @entry_action ||= root_plan_step.action(self) end
# File lib/dynflow/execution_plan.rb, line 144 def error? result == :error end
# File lib/dynflow/execution_plan.rb, line 148 def error_in_plan? steps_in_state(:error).any? { |step| step.is_a? Steps::PlanStep } end
# File lib/dynflow/execution_plan.rb, line 152 def errors steps.values.map(&:error).compact end
# File lib/dynflow/execution_plan.rb, line 194 def failed_steps steps_in_state(:error) end
# File lib/dynflow/execution_plan.rb, line 190 def finalize_steps steps_of_type(Dynflow::ExecutionPlan::Steps::FinalizeStep) end
# File lib/dynflow/execution_plan.rb, line 210 def generate_action_id @last_action_id ||= 0 @last_action_id += 1 end
# File lib/dynflow/execution_plan.rb, line 215 def generate_step_id @last_step_id ||= 0 @last_step_id += 1 end
# File lib/dynflow/execution_plan.rb, line 107 def logger @world.logger end
# File lib/dynflow/execution_plan.rb, line 248 def plan(*args) update_state(:planning) world.middleware.execute(:plan_phase, root_plan_step.action_class, self) do with_planning_scope do root_action = root_plan_step.execute(self, nil, false, *args) @label = root_action.label if @dependency_graph.unresolved? raise "Some dependencies were not resolved: #{@dependency_graph.inspect}" end end end if @run_flow.size == 1 @run_flow = @run_flow.sub_flows.first end steps.values.each(&:save) update_state(error? ? :stopped : :planned) end
# File lib/dynflow/execution_plan.rb, line 182 def plan_steps steps_of_type(Dynflow::ExecutionPlan::Steps::PlanStep) end
# File lib/dynflow/execution_plan.rb, line 239 def prepare(action_class, options = {}) options = options.dup caller_action = Type! options.delete(:caller_action), Dynflow::Action, NilClass raise "Unexpected options #{options.keys.inspect}" unless options.empty? save @root_plan_step = add_plan_step(action_class, caller_action) @root_plan_step.save end
@return [0..1] the percentage of the progress. See Action::Progress for more info
# File lib/dynflow/execution_plan.rb, line 454 def progress return 0 if [:pending, :planning, :scheduled].include?(state) flow_step_ids = run_flow.all_step_ids + finalize_flow.all_step_ids plan_done, plan_total = flow_step_ids.reduce([0.0, 0]) do |(done, total), step_id| step = self.steps[step_id] [done + (step.progress_done * step.progress_weight), total + step.progress_weight] end plan_total > 0 ? (plan_done / plan_total) : 1 end
# File lib/dynflow/execution_plan.rb, line 202 def rescue_from_error if rescue_plan_id = self.rescue_plan_id @world.execute(rescue_plan_id) else raise Errors::RescueError, 'Unable to rescue from the error' end end
# File lib/dynflow/execution_plan.rb, line 169 def rescue_plan_id case rescue_strategy when Action::Rescue::Pause nil when Action::Rescue::Fail update_state :stopped nil when Action::Rescue::Skip failed_steps.each { |step| self.skip(step) } self.id end end
# File lib/dynflow/execution_plan.rb, line 156 def rescue_strategy rescue_strategy = entry_action.rescue_strategy || Action::Rescue::Skip Type! rescue_strategy, Action::Rescue::Strategy end
# File lib/dynflow/execution_plan.rb, line 131 def result all_steps = steps.values if all_steps.any? { |step| step.state == :error } return :error elsif all_steps.any? { |step| [:skipping, :skipped].include?(step.state) } return :warning elsif all_steps.all? { |step| step.state == :success } return :success else return :pending end end
# File lib/dynflow/execution_plan.rb, line 186 def run_steps steps_of_type(Dynflow::ExecutionPlan::Steps::RunStep) end
# File lib/dynflow/execution_plan.rb, line 404 def save persistence.save_execution_plan(self) end
# File lib/dynflow/execution_plan.rb, line 295 def skip(step) steps_to_skip = steps_to_skip(step).each(&:mark_to_skip) self.save return steps_to_skip end
# File lib/dynflow/execution_plan.rb, line 198 def steps_in_state(*states) self.steps.values.find_all {|step| states.include?(step.state) } end
@api private
# File lib/dynflow/execution_plan.rb, line 328 def steps_of_type(type) steps.values.find_all { |step| step.is_a?(type) } end
# File lib/dynflow/execution_plan.rb, line 289 def steps_to_cancel steps_in_state(:running, :suspended).find_all do |step| step.action(self).is_a?(::Dynflow::Action::Cancellable) end end
All the steps that need to get skipped when wanting to skip the step includes the step itself, all steps dependent on it (even transitively) FIND maybe move to persistence to let adapter to do it effectively? @return [Array<Steps::Abstract>]
# File lib/dynflow/execution_plan.rb, line 305 def steps_to_skip(step) dependent_steps = steps.values.find_all do |s| next if s.is_a? Steps::PlanStep action = persistence.load_action(s) action.required_step_ids.include?(step.id) end steps_to_skip = dependent_steps.map do |dependent_step| steps_to_skip(dependent_step) end.flatten steps_to_skip << step if step.is_a? Steps::RunStep finalize_step_id = persistence.load_action(step).finalize_step_id steps_to_skip << steps[finalize_step_id] if finalize_step_id end return steps_to_skip.uniq end
# File lib/dynflow/execution_plan.rb, line 161 def sub_plans persistence.find_execution_plans(filters: { 'caller_execution_plan_id' => self.id }) end
# File lib/dynflow/execution_plan.rb, line 165 def sub_plans_count persistence.find_execution_plan_counts(filters: { 'caller_execution_plan_id' => self.id }) end
@api private Switches the flow type (Sequence, Concurrence) to be used within the block.
# File lib/dynflow/execution_plan.rb, line 348 def switch_flow(new_flow, &block) @run_flow_stack << new_flow return block.call ensure @run_flow_stack.pop current_run_flow.add_and_resolve(@dependency_graph, new_flow) if current_run_flow end
# File lib/dynflow/execution_plan.rb, line 387 def to_hash recursive_to_hash id: id, class: self.class.to_s, label: label, state: state, result: result, root_plan_step_id: root_plan_step && root_plan_step.id, run_flow: run_flow, finalize_flow: finalize_flow, step_ids: steps.map { |id, _| id }, started_at: time_to_str(started_at), ended_at: time_to_str(ended_at), execution_time: execution_time, real_time: real_time, execution_history: execution_history.to_hash end
# File lib/dynflow/execution_plan.rb, line 111 def update_state(state) original = self.state case self.state = state when :planning @started_at = Time.now when :stopped @ended_at = Time.now @real_time = @ended_at - @started_at unless @started_at.nil? @execution_time = compute_execution_time unlock_all_singleton_locks! when :paused unlock_all_singleton_locks! else # ignore end logger.debug format('%13s %s %9s >> %9s', 'ExecutionPlan', id, original, state) self.save end
# File lib/dynflow/execution_plan.rb, line 103 def valid? true end
@api private
# File lib/dynflow/execution_plan.rb, line 337 def with_planning_scope(&block) @run_flow_stack = [] @dependency_graph = DependencyGraph.new switch_flow(run_flow, &block) ensure @run_flow_stack = nil @dependency_graph = nil end
# File lib/dynflow/execution_plan.rb, line 486 def add_step(step_class, action_class, action_id, state = :pending) step_class.new(self.id, self.generate_step_id, state, action_class, action_id, nil, world).tap do |new_step| @steps[new_step.id] = new_step end end
# File lib/dynflow/execution_plan.rb, line 482 def persistence world.persistence end
# File lib/dynflow/execution_plan.rb, line 516 def unlock_all_singleton_locks! filter = { :owner_id => 'execution-plan:' + self.id, :class => Dynflow::Coordinator::SingletonActionLock.to_s } world.coordinator.find_locks(filter).each do |lock| world.coordinator.release(lock) end end