Module: Mbeditor::ExceptionLog

Defined in:
lib/mbeditor/exception_log.rb

Overview

A bounded, in-memory ring of exceptions raised by the host app, so a failed request shows up in the editor instead of only in the log.

Lives in lib/ (required from lib/mbeditor.rb, NOT autoloaded) for the same reason as RubyLspClient: a Zeitwerk reload in the host's dev environment must not wipe the buffer you are trying to read.

Fed by an ActiveSupport::Notifications subscriber wired up in the engine. A Rack middleware cannot be used here: ActionDispatch::DebugExceptions rescues and renders the error, so nothing outside it ever sees the raise.

Constant Summary collapse

MAX_ENTRIES = 
50
MAX_FRAMES =

Backtraces are mostly framework and gem frames, which this editor cannot open and which push the app's own frames off the end.

10

Class Method Summary collapse

Class Method Details

.clear! ⇒ Object 



43
44
45
46
 
# File 'lib/mbeditor/exception_log.rb', line 43

def clear!
  MUTEX.synchronize { @entries = [] }
  nil
end

.entries ⇒ Object

Newest first — the one you just triggered is the one you want.



39
40
41
 
# File 'lib/mbeditor/exception_log.rb', line 39

def entries
  MUTEX.synchronize { (@entries || []).reverse }
end

.record(exception, payload = {}, workspace_root: nil) ⇒ Object

Returns the recorded entry, or nil when there was nothing to record.



26
27
28
29
30
31
32
33
34
35
36
 
# File 'lib/mbeditor/exception_log.rb', line 26

def record(exception, payload = {}, workspace_root: nil)
  return nil if exception.nil?

  entry = build(exception, payload, workspace_root)
  MUTEX.synchronize do
    @entries ||= []
    @entries << entry
    @entries.shift while @entries.length > MAX_ENTRIES
  end
  entry
end