Logger#with_level

with_level(severity) { || ... }

# File tmp/rubies/ruby-3.3.0/lib/logger.rb, line 408
def with_level(severity)
  prev, @level_override[Fiber.current] = level, Severity.coerce(severity)
  begin
    yield
  ensure
    if prev
      @level_override[Fiber.current] = prev
    else
      @level_override.delete(Fiber.current)
    end
  end
end

Adjust the log level during the block execution for the current Fiber only

Example

logger.with_level(:debug) do
  logger.debug { "Hello" }
end