Module: Trailblazer::Developer::Wtf

Defined in:
lib/trailblazer/developer/wtf.rb,
lib/trailblazer/developer/wtf/renderer.rb

Defined Under Namespace

Modules: Exception, Renderer

Class Method Summary collapse

Class Method Details

.invoke(activity, ctx, flow_options, present_options: {}, **circuit_options) ⇒ Object

Run activity with tracing enabled and inject a mutable Stack instance. This allows to display the trace even when an exception happened



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# File 'lib/trailblazer/developer/wtf.rb', line 17

def invoke(activity, (ctx, flow_options), present_options: {}, **circuit_options)
  flow_options ||= {}

  stack = Trace::Stack.new # unfortunately, we need this mutable object before things break.

  complete_stack, signal, (ctx, flow_options) = Trace.invoke(
    activity,
    [ctx, flow_options.merge(stack: stack)],
    **circuit_options
  )

  return signal, [ctx, flow_options], circuit_options

ensure
  # incomplete_stack = flow_options[:stack]
  incomplete_stack = stack

    # in 99%, exception_source is a {Captured::Input}.
  exception_source = incomplete_stack.to_a.last  # DISCUSS: in most cases, this is where the problem has happened.
                                            #   However, what if an error happens in, say, an input filter? TODO: test this

  complete_stack = Exception::Stack.complete(incomplete_stack) # TODO: only in case of exception!

  puts Trace::Present.(
    complete_stack,
    # we can hand in options per node, identified by their captured_input part.
    node_options: {
      exception_source => {data: {exception_source: true}}, # goes to {Debugger::Node.build}
    },

    renderer:   Wtf::Renderer,
    color_map:  Wtf::Renderer::DEFAULT_COLOR_MAP.merge( flow_options[:color_map] || {} ),
    style: {exception_source => [:red, :bold]},
    **present_options, # TODO: test.
  )
end