Class: Kiss::ExceptionReport

Inherits:
Object
  • Object
show all
Defined in:
lib/kiss/exception_report.rb

Overview

Generates HTML reports on exceptions raised from the app, showing the backtrace with clickable stack frames with TextMate links to source files, plus login hash, last SQL, GET/POST params, cookies, and Rack environment variables.

Constant Summary collapse

@@context = 
7

Class Method Summary collapse

Class Method Details

.generate(exception, env = nil, cache = nil, sql = nil) ⇒ Object 



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# File 'lib/kiss/exception_report.rb', line 10

def generate(exception, env = nil, cache = nil, sql = nil)
  if env
    req = Rack::Request.new(env)
    path = (req.script_name + req.path_info).squeeze("/")
    url = (req.scheme + '://' + req.host + path) rescue 'n/a'
  end

  backtrace = exception.backtrace
  
  frames = backtrace.map { |line|
    frame = {}
    if line =~ /(.*?):(\d+)(:in `(.*)')?/
      frame.filename = $1
      frame.lineno = $2.to_i
      frame.function = $4
      lines = nil
      
      begin
        lineno = frame.lineno-1
        lines ||= ::File.readlines(frame.filename)
        frame.pre_context_lineno = [lineno-@@context, 0].max
        frame.pre_context = lines[frame.pre_context_lineno...lineno]
        frame.context_line = lines[lineno].chomp
        frame.post_context_lineno = [lineno+@@context, lines.size].min
        frame.post_context = lines[lineno+1..frame.post_context_lineno]
      rescue
      end
      
      frame
    else
      nil
    end
  }.compact
  
  i = 0
  while true do
    break unless (frames[i].filename =~ /\/lib\/kiss(\/|\.rb)/) || (frames[i].filename =~ /\/lib\/sequel/)
    i += 1
  end
  toggle_frame = frames[i] || frames[0]
  
  if env
    env["rack.errors"].puts "#{exception.class}: #{exception.message}"
    env["rack.errors"].puts exception.backtrace.map { |l| "\t" + l }
    env["rack.errors"].flush
  end
  
  db_query = begin (Sequel::MySQL::Database.last_query) rescue nil end
  
  @@erubis ||= Erubis::Eruby.new(template)
  begin
    @@erubis.result(binding)
  rescue => e
    gdebug e.message
  end
end

.h(str) ⇒ Object 



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# File 'lib/kiss/exception_report.rb', line 75

def h(str)
  str.html_escape
end

.template ⇒ Object

:stopdoc:



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# File 'lib/kiss/exception_report.rb', line 81

def template
  @@template ||= File.read( template_dir + '/exception_report.html' )
end

.template_dir ⇒ Object 



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# File 'lib/kiss/exception_report.rb', line 85

def template_dir
  @@template_dir = File.dirname(__FILE__) + '/html'
end

.textmate_href(frame) ⇒ Object 



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# File 'lib/kiss/exception_report.rb', line 67

def textmate_href(frame)
  "txmt://open?url=file://"+(h(Kiss.absolute_path(frame.filename)))+"&line="+(h frame.lineno)
end

.w(str) ⇒ Object 



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# File 'lib/kiss/exception_report.rb', line 71

def w(str)
  str.gsub(/([;\/])/, '\1<wbr/>')
end