SCons/Tool/ninja/ninja_daemon_build.py

   1 #!/usr/bin/env python3
   2 #
   3 # MIT License
   4 #
   5 # Copyright The SCons Foundation
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining
   8 # a copy of this software and associated documentation files (the
   9 # "Software"), to deal in the Software without restriction, including
  10 # without limitation the rights to use, copy, modify, merge, publish,
  11 # distribute, sublicense, and/or sell copies of the Software, and to
  12 # permit persons to whom the Software is furnished to do so, subject to
  13 # the following conditions:
  14 #
  15 # The above copyright notice and this permission notice shall be included
  16 # in all copies or substantial portions of the Software.
  17 #
  18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  19 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  20 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  22 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 """
  27 This script is intended to execute a single build target. This script should be
  28 called by ninja, passing the port, ninja dir, and build target via arguments.
  29 The script then executes a simple get request to the scons daemon which is listening
  30 on from localhost on the set port.
  31 """
  32
  33 import http.client
  34 import sys
  35 import time
  36 import os
  37 import logging
  38 import pathlib
  39 import tempfile
  40 import hashlib
  41 import traceback
  42 import socket
  43
  44 ninja_builddir = pathlib.Path(sys.argv[2])
  45 daemon_dir = pathlib.Path(tempfile.gettempdir()) / (
  46     "scons_daemon_" + str(hashlib.md5(str(ninja_builddir).encode()).hexdigest())
  47 )
  48 os.makedirs(daemon_dir, exist_ok=True)
  49
  50 logging.basicConfig(
  51     filename=daemon_dir / "scons_daemon_request.log",
  52     filemode="a",
  53     format="%(asctime)s %(message)s",
  54     level=logging.DEBUG,
  55 )
  56
  57
  58 def log_error(msg) -> None:
  59     logging.debug(msg)
  60     sys.stderr.write(msg)
  61
  62
  63 while True:
  64     try:
  65         if not os.path.exists(daemon_dir / "pidfile"):
  66             if sys.argv[3] != '--exit':
  67                 logging.debug(f"ERROR: Server pid not found {daemon_dir / 'pidfile'} for request {sys.argv[3]}")
  68                 exit(1)
  69             else:
  70                 logging.debug("WARNING: Unnecessary request to shutdown server, it's already shutdown.")
  71                 exit(0)
  72
  73         logging.debug(f"Sending request: {sys.argv[3]}")
  74         conn = http.client.HTTPConnection(
  75             "127.0.0.1", port=int(sys.argv[1]), timeout=60
  76         )
  77         if sys.argv[3] == '--exit':
  78             conn.request("GET", "/?exit=1")
  79         else:
  80             conn.request("GET", "/?build=" + sys.argv[3])
  81         response = None
  82
  83         while not response:
  84             try:
  85                 response = conn.getresponse()
  86             except (http.client.RemoteDisconnected, http.client.ResponseNotReady, socket.timeout):
  87                 time.sleep(0.1)
  88             except http.client.HTTPException:
  89                 log_error(f"Error: {traceback.format_exc()}")
  90                 exit(1)
  91             else:
  92                 msg = response.read()
  93                 status = response.status
  94                 if status != 200:
  95                     log_error(msg.decode("utf-8"))
  96                     exit(1)
  97
  98                 logging.debug(f"Request Done: {sys.argv[3]}")
  99                 exit(0)
 100
 101     except ConnectionRefusedError:
 102         logging.debug(f"Server refused connection to build {sys.argv[3]}, maybe it was too busy, tring again: {traceback.format_exc()}")
 103         time.sleep(0.1)
 104
 105     except Exception:
 106         log_error(f"Failed to send command: {traceback.format_exc()}")
 107         exit(1)
 108
 109
 110
 111 # Local Variables:
 112 # tab-width:4
 113 # indent-tabs-mode:nil
 114 # End:
 115 # vim: set expandtab tabstop=4 shiftwidth=4: