Module: NdrError::BacktraceCompression

Included in:
Log
Defined in:
lib/ndr_error/backtrace_compression.rb

Overview

Mixin to help compressing/expanding stored backtraces.

Instance Method Summary collapse

Instance Method Details

#application_trace ⇒ Object

Attempts to return just the “application” trace, so we can highlight “our” code vs. 3rd-party libraries.



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# File 'lib/ndr_error/backtrace_compression.rb', line 6

def application_trace
  app_trace = backtrace.select do |line|
    app = line =~ %r{/(#{Rails.root.basename}|current|releases)/}
    ndr = line =~ %r{/gems/ndr_}

    app || ndr
  end

  app_trace = backtrace.reject { |line| line =~ %r{/gems/} } if app_trace.blank?
  app_trace
end

#backtrace ⇒ Object

Returns the backtrace as an array.



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# File 'lib/ndr_error/backtrace_compression.rb', line 19

def backtrace
  inflate_backtrace(lines)
end

#backtrace=(trace) ⇒ Object

Stores as much of the backtrace as is possible in a string. Splits out any nested lines, e.g. TemplateError backtrace.



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# File 'lib/ndr_error/backtrace_compression.rb', line 25

def backtrace=(trace)
  array = trace ? trace.dup : []
  array = array.map { |line| line.split("\n") }.flatten
  dump  = deflate_backtrace(array)

  while dump.length >= 4000
    array.pop
    dump = deflate_backtrace(array)
  end

  self.lines = dump
end