lib/nitcorn/log.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 # Services inserting a timestamp in all prints and to log each requests
  16 # Also keep track of the performances of the requests
  17 module log
  18
  19 import reactor
  20 import realtime
  21 import performance_analysis
  22
  23 redef class Action
  24
  25         redef fun prepare_respond_and_close(request, truncated_uri, http_server) do
  26                 if not log_nitcorn_actions then
  27                         super
  28                         return
  29                 end
  30
  31                 print "{http_server.remote_address}: {class_name} prepare for url:'{request.url}' body:'{request.body}' cookie:'{request.cookie.join(",", ":")}'"
  32
  33                 var clock = new Clock
  34
  35                 super
  36
  37                 var perf = sys.perfs[class_name]
  38                 perf.add(clock.lapse)
  39                 if perf.count % perfs_print_period == 0 then print "{class_name} perfs: {perf}:"
  40         end
  41 end
  42
  43 redef class HttpServer
  44         redef fun read_http_request(str)
  45         do
  46                 print "{remote_address}: received HTTP request"
  47                 super
  48         end
  49
  50         redef fun respond(response)
  51         do
  52                 super
  53                 if log_nitcorn_actions then print "{remote_address}: response header '{response.header.join(",", ":")}' to '{remote_address}'"
  54         end
  55 end
  56
  57 redef fun print(object) do
  58         var timestamp = new Tm.gmtime
  59         super "{timestamp.year}/{timestamp.mon}/{timestamp.mday} "+
  60         "{timestamp.hour}:{timestamp.min}:{timestamp.sec}: {object}"
  61 end
  62
  63 redef fun print_error(object) do
  64         var timestamp = new Tm.gmtime
  65         super "{timestamp.year}/{timestamp.mon}/{timestamp.mday} "+
  66         "{timestamp.hour}:{timestamp.min}:{timestamp.sec}: {object}"
  67 end
  68
  69 # Should the actions be logged? This may log sensitive data.
  70 fun log_nitcorn_actions: Bool do return false
  71
  72 # Number of actions executed before printing the perfs
  73 fun perfs_print_period: Int do return 20