lib/solid/result/event_logs/tracking/enabled.rb
# frozen_string_literal: true
module Solid::Result::EventLogs
class Tracking::Enabled
attr_accessor :tree, :records, :root_started_at, :listener
private :tree, :tree=, :records, :records=, :root_started_at, :root_started_at=, :listener, :listener=
def exec(name, desc)
event_log_node, scope = start(name, desc)
result = nil
listener.around_event_logs(scope: scope) do
result = EnsureResult[yield]
end
tree.move_to_root! if event_log_node.root?
finish(result)
result
rescue ::Exception => e
err!(e, event_log_node)
end
def err!(exception, event_log_node)
if event_log_node.root?
listener.before_interruption(exception: exception, event_logs: map_event_logs)
reset!
end
raise exception
end
def reset!
self.tree = Tracking::EMPTY_TREE
end
def record(result)
return if tree.frozen?
track(result, time: ::Time.now.getutc)
end
def record_and_then(type_arg, arg)
return yield if tree.frozen?
type = type_arg.instance_of?(::Method) ? :method : type_arg
current_and_then = { type: type, arg: arg }
current_and_then[:method_name] = type_arg.name if type == :method
tree.current.value[1] = current_and_then
scope, and_then = tree.current_value
result = nil
listener.around_and_then(scope: scope, and_then: and_then) { result = yield }
result
end
def reset_and_then!
return if tree.frozen?
tree.current.value[1] = Tracking::EMPTY_HASH
end
private
def start(name, desc)
name_and_desc = [name, desc]
tree.frozen? ? root_start(name_and_desc) : tree.insert!(name_and_desc)
scope = tree.current.value[0]
listener.on_start(scope: scope)
[tree.current, scope]
end
def finish(result)
node = tree.current
tree.move_up!
return unless node.root?
event_logs = map_event_logs
result.send(:event_logs=, event_logs)
listener.on_finish(event_logs: event_logs)
reset!
end
TreeNodeValueNormalizer = ->(id, (nam, des)) { [{ id: id, name: nam, desc: des }, Tracking::EMPTY_HASH] }
def root_start(name_and_desc)
self.root_started_at = now_in_milliseconds
self.listener = build_listener
self.records = []
self.tree = Tree.new(name_and_desc, normalizer: TreeNodeValueNormalizer)
end
def track(result, time:)
record = track_record(result, time)
records << record
listener.on_record(record: record)
record
end
def track_record(result, time)
result_data = result.data.to_h
result_data[:source] = result.send(:source)
root, = tree.root_value
parent, = tree.parent_value
current, and_then = tree.current_value
{ root: root, parent: parent, current: current, result: result_data, and_then: and_then, time: time }
end
def now_in_milliseconds
::Process.clock_gettime(::Process::CLOCK_MONOTONIC, :millisecond)
end
def map_event_logs
duration = (now_in_milliseconds - root_started_at)
trace_id = Config.instance.trace_id.call
ids = { tree: tree.ids, matrix: tree.ids_matrix, level_parent: tree.ids_level_parent }
metadata = { duration: duration, trace_id: trace_id, ids: ids }
{ version: Tracking::VERSION, records: records, metadata: metadata }
end
def build_listener
Config.instance.listener.new
rescue ::StandardError => e
err = "#{e.message} (#{e.class}); Backtrace: #{e.backtrace&.join(', ')}"
warn("Fallback to #{Listener::Null} because registered listener raised an exception: #{err}")
Listener::Null.new
end
end
end