/usr/share/pyshared/mod_python/importer.py is in libapache2-mod-python 3.3.1-11.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 | # vim: set sw=4 expandtab :
#
# Copyright 2004 Apache Software Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you
# may not use this file except in compliance with the License. You
# may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing
# permissions and limitations under the License.
#
# Originally developed by Gregory Trubetskoy.
#
# The code in this file originally donated by Graham Dumpleton.
#
# $Id: importer.py 481741 2006-12-03 09:14:06Z grahamd $
from mod_python import apache
from mod_python import publisher
import os
import sys
import new
import types
import pdb
import imp
import md5
import time
import string
import StringIO
import traceback
import cgi
try:
import threading
except:
import dummy_threading as threading
# Define a transient per request modules cache. This is
# not the same as the true global modules cache used by
# the module importer. Instead, the per request modules
# cache is where references to modules loaded in order
# to satisfy the requirements of a specific request are
# stored for the life of that request. Such a cache is
# required to ensure that two distinct bits of code that
# load the same module do in fact use the same instance
# of the module and that an update of the code for a
# module on disk doesn't cause the latter handler code
# to load its own separate instance. This is in part
# necessary because the module loader does not reload a
# module on top of the old module, but loads the new
# instance into a clean module.
class _module_cache(dict): pass
_request_modules_cache = {}
def _cleanup_request_modules_cache(thread=None):
thread = thread or threading.currentThread()
_request_modules_cache.pop(thread, None)
def _setup_request_modules_cache(req=None):
thread = threading.currentThread()
if not _request_modules_cache.has_key(thread):
_request_modules_cache[thread] = _module_cache()
_request_modules_cache[thread].generation = 0
_request_modules_cache[thread].ctime = 0
if req:
req.register_cleanup(_cleanup_request_modules_cache, thread)
def _get_request_modules_cache():
thread = threading.currentThread()
return _request_modules_cache.get(thread, None)
def request_modules_graph(verbose=0):
output = StringIO.StringIO()
modules = _get_request_modules_cache()
print >> output, 'digraph REQUEST {'
print >> output, 'node [shape=box];'
for module in modules.values():
name = module.__name__
filename = module.__file__
if verbose:
cache = module.__mp_info__.cache
ctime = time.asctime(time.localtime(cache.ctime))
mtime = time.asctime(time.localtime(cache.mtime))
atime = time.asctime(time.localtime(cache.atime))
generation = cache.generation
direct = cache.direct
indirect = cache.indirect
path = module.__mp_path__
message = '%s [label="%s\\nmtime = %s\\nctime = %s\\natime = %s\\n'
message += 'generation = %d, direct = %d, indirect = %d\\n'
message += 'path = %s"];'
print >> output, message % (name, filename, mtime, ctime, atime, \
generation, direct, indirect, path)
else:
message = '%s [label="%s"];'
print >> output, message % (name, filename)
children = module.__mp_info__.children
for child_name in children:
print >> output, '%s -> %s' % (name, child_name)
print >> output, '}'
return output.getvalue()
apache.request_modules_graph = request_modules_graph
# Define a transient per request cache into which
# the currently active configuration and handler root
# directory pertaining to a request is stored. This is
# done so that it can be accessed directly from the
# module importer function to obtain configuration
# settings indicating if logging and module reloading is
# enabled and to determine where to look for modules.
_current_cache = {}
def _setup_current_cache(config, options, directory):
thread = threading.currentThread()
if directory:
directory = os.path.normpath(directory)
cache = _current_cache.get(thread, (None, None, None))
if config is None and options is None:
del _current_cache[thread]
else:
_current_cache[thread] = (config, options, directory)
return cache
def get_current_config():
thread = threading.currentThread()
config, options, directory = _current_cache.get(thread,
(apache.main_server.get_config(), None, None))
return config
def get_current_options():
thread = threading.currentThread()
config, options, directory = _current_cache.get(thread,
(None, apache.main_server.get_options(), None))
return options
def get_handler_root():
thread = threading.currentThread()
config, options, directory = _current_cache.get(thread,
(None, None, None))
return directory
apache.get_current_config = get_current_config
apache.get_current_options = get_current_options
apache.get_handler_root = get_handler_root
# Define an alternate implementation of the module
# importer system and substitute it for the standard one
# in the 'mod_python.apache' module.
apache.ximport_module = apache.import_module
def _parent_context():
# Determine the enclosing module which has called
# this function. From that module, return the info
# stashed in it by the module importer system.
try:
raise Exception
except:
parent = sys.exc_info()[2].tb_frame.f_back
while (parent and parent.f_globals.has_key('__file__') and
parent.f_globals['__file__'] == __file__):
parent = parent.f_back
if parent and parent.f_globals.has_key('__mp_info__'):
parent_info = parent.f_globals['__mp_info__']
parent_path = parent.f_globals['__mp_path__']
return (parent_info, parent_path)
return (None, None)
def _find_module(module_name, path):
# Search the specified path for a Python code module
# of the specified name. Note that only Python code
# files with a '.py' extension will be used. Python
# packages will be ignored.
for directory in path:
if directory is not None:
if directory == '~':
root = get_handler_root()
if root is not None:
directory = root
elif directory[:2] == '~/':
root = get_handler_root()
if root is not None:
directory = os.path.join(root, directory[2:])
file = os.path.join(directory, module_name) + '.py'
if os.path.exists(file):
return file
def import_module(module_name, autoreload=None, log=None, path=None):
file = None
import_path = []
# Deal with explicit references to a code file.
# Allow some shortcuts for referring to code file
# relative to handler root or directory of parent
# module. Those relative to parent module are not
# allowed if parent module not imported using this
# module importing system.
if os.path.isabs(module_name):
file = module_name
elif module_name[:2] == '~/':
directory = get_handler_root()
if directory is not None:
file = os.path.join(directory, module_name[2:])
elif module_name[:2] == './':
(parent_info, parent_path) = _parent_context()
if parent_info is not None:
directory = os.path.dirname(parent_info.file)
file = os.path.join(directory, module_name[2:])
elif module_name[:3] == '../':
(parent_info, parent_path) = _parent_context()
if parent_info is not None:
directory = os.path.dirname(parent_info.file)
file = os.path.join(directory, module_name)
if file is None:
# If not an explicit file reference, it is a
# module name. Determine the list of directories
# that need to be searched for a module code
# file. These directories will be, the directory
# of the parent if also imported using this
# importer and any specified search path.
search_path = []
if path is not None:
search_path.extend(path)
(parent_info, parent_path) = _parent_context()
if parent_info is not None:
directory = os.path.dirname(parent_info.file)
search_path.append(directory)
if parent_path is not None:
search_path.extend(parent_path)
options = get_current_options()
if options.has_key('mod_python.importer.path'):
directory = eval(options['mod_python.importer.path'])
search_path.extend(directory)
# Attempt to find the code file for the module
# if we have directories to actually search.
if search_path:
file = _find_module(module_name, search_path)
else:
# For module imported using explicit path, the
# path argument becomes the special embedded
# search path for 'import' statement executed
# within that module.
if path is not None:
import_path = path
# Was a Python code file able to be identified.
if file is not None:
# Use the module importing and caching system
# to load the code from the specified file.
return _global_modules_cache.import_module(file, autoreload, \
log, import_path)
else:
# If a module code file could not be found,
# defer to the standard Python module importer.
# We should always end up here if the request
# was for a package.
return __import__(module_name, {}, {}, ['*'])
apache.import_module = import_module
class _CacheInfo:
def __init__(self, label, file, mtime):
self.label = label
self.file = file
self.mtime = mtime
self.module = None
self.instance = 0
self.generation = 0
self.children = {}
self.path = []
self.atime = 0
self.ctime = 0
self.direct = 0
self.indirect = 0
self.reload = 0
self.lock = threading.Lock()
class _InstanceInfo:
def __init__(self, label, file, cache):
self.label = label
self.file = file
self.cache = cache
self.children = {}
class _ModuleCache:
_prefix = "_mp_"
def __init__(self):
self._cache = {}
self._lock1 = threading.Lock()
self._lock2 = threading.Lock()
self._generation = 0
self._frozen = False
self._directories = {}
def _log_notice(self, msg):
pid = os.getpid()
name = apache.interpreter
flags = apache.APLOG_NOERRNO|apache.APLOG_NOTICE
text = "mod_python (pid=%d, interpreter=%s): %s" % (pid, `name`, msg)
apache.main_server.log_error(text, flags)
def _log_warning(self, msg):
pid = os.getpid()
name = apache.interpreter
flags = apache.APLOG_NOERRNO|apache.APLOG_WARNING
text = "mod_python (pid=%d, interpreter=%s): %s" % (pid, `name`, msg)
apache.main_server.log_error(text, flags)
def _log_exception(self):
pid = os.getpid()
name = apache.interpreter
flags = apache.APLOG_NOERRNO|apache.APLOG_ERR
msg = 'Application error'
text = "mod_python (pid=%d, interpreter=%s): %s" % (pid, `name`, msg)
apache.main_server.log_error(text, flags)
etype, evalue, etb = sys.exc_info()
for text in traceback.format_exception(etype, evalue, etb):
apache.main_server.log_error(text[:-1], flags)
etb = None
def cached_modules(self):
self._lock1.acquire()
try:
return self._cache.keys()
finally:
self._lock1.release()
def module_info(self, label):
self._lock1.acquire()
try:
return self._cache[label]
finally:
self._lock1.release()
def freeze_modules(self):
self._frozen = True
def modules_graph(self, verbose=0):
self._lock1.acquire()
try:
output = StringIO.StringIO()
modules = self._cache
print >> output, 'digraph GLOBAL {'
print >> output, 'node [shape=box];'
for cache in modules.values():
name = cache.label
filename = cache.file
if verbose:
ctime = time.asctime(time.localtime(cache.ctime))
mtime = time.asctime(time.localtime(cache.mtime))
atime = time.asctime(time.localtime(cache.atime))
generation = cache.generation
direct = cache.direct
indirect = cache.indirect
path = cache.path
message = '%s [label="%s\\nmtime = %s\\nctime = %s\\n'
message += 'atime = %s\\ngeneration = %d, direct = %d,'
message += 'indirect = %d\\npath = %s"];'
print >> output, message % (name, filename, mtime, ctime,
atime, generation, direct, indirect, path)
else:
message = '%s [label="%s"];'
print >> output, message % (name, filename)
children = cache.children
for child_name in children:
print >> output, '%s -> %s' % (name, child_name)
print >> output, '}'
return output.getvalue()
finally:
self._lock1.release()
def _check_directory(self, file):
directory = os.path.dirname(file)
if not directory in self._directories:
self._directories[directory] = None
if directory in sys.path:
msg = 'Module directory listed in "sys.path". '
msg = msg + 'This may cause problems. Please check code. '
msg = msg + 'File being imported is "%s".' % file
self._log_warning(msg)
def import_module(self, file, autoreload=None, log=None, path=None):
# Ensure that file name is normalised so all
# lookups against the cache equate where they
# are the same file. This isn't necessarily
# going to work where symlinks are involved, but
# not much else that can be done in that case.
file = os.path.normpath(file)
# Determine the default values for the module
# autoreloading and logging arguments direct
# from the Apache configuration rather than
# having fixed defaults.
if autoreload is None or log is None:
config = get_current_config()
if autoreload is None:
autoreload = int(config.get("PythonAutoReload", 1))
if log is None:
log = int(config.get("PythonDebug", 0))
# Warn of any instances where a code file is
# imported from a directory which also appears
# in 'sys.path'.
if log:
self._check_directory(file)
# Retrieve the parent context. That is, the
# details stashed into the parent module by the
# module importing system itself.
(parent_info, parent_path) = _parent_context()
# Check for an attempt by the module to import
# itself.
if parent_info:
assert(file != parent_info.file), "Import cycle in %s." % file
# Retrieve the per request modules cache entry.
modules = _get_request_modules_cache()
# Calculate a unique label corresponding to the
# name of the file which is the module. This
# will be used as the '__name__' attribute of a
# module and as key in various tables.
label = self._module_label(file)
# See if the requested module has already been
# imported previously within the context of this
# request or at least visited by way of prior
# dependency checks where it was deemed that it
# didn't need to be reloaded. If it has we can
# skip any additional dependency checks and use
# the module already identified. This ensures
# the same actual module instance is used. This
# check is also required so that we don't get
# into cyclical import loops. Still need to at
# least record the fact that the module is a
# child of the parent.
if modules is not None:
if modules.has_key(label):
if parent_info:
parent_info.children[label] = time.time()
return modules[label]
# Now move on to trying to find the actual
# module.
try:
cache = None
# First determine if the module has been loaded
# previously. If not already loaded or if a
# dependency of the module has been changed on disk
# or reloaded since parent was loaded, must load the
# module.
(cache, load) = self._reload_required(modules,
label, file, autoreload)
# Make sure that the cache entry is locked by the
# thread so that other threads in a multithreaded
# system don't try and load the same module at the
# same time.
cache.lock.acquire()
# If this per request modules cache has just
# been created for the first time, record some
# details in it about current cache state and
# run time of the request.
if modules.ctime == 0:
modules.generation = self._generation
modules.ctime = time.time()
# Import module or obtain it from cache as is
# appropriate.
if load:
# Setup a new empty module to load the code for
# the module into. Increment the instance count
# and set the reload flag to force a reload if
# the import fails.
cache.instance = cache.instance + 1
cache.reload = 1
module = imp.new_module(label)
# If the module was previously loaded we need to
# manage the transition to the new instance of
# the module that is being loaded to replace it.
# This entails calling the special clone method,
# if provided within the existing module. Using
# this method the existing module can then
# selectively indicate what should be transfered
# over to the next instance of the module,
# including thread locks. If this process fails
# the special purge method is called, if
# provided, to indicate that the existing module
# is being forcibly purged out of the system. In
# that case any existing state will not be
# transferred.
if cache.module != None:
if hasattr(cache.module, "__mp_clone__"):
try:
# Migrate any existing state data from
# existing module instance to new module
# instance.
if log:
msg = "Cloning module '%s'" % file
self._log_notice(msg)
cache.module.__mp_clone__(module)
except:
# Forcibly purging module from system.
self._log_exception()
if log:
msg = "Purging module '%s'" % file
self._log_notice(msg)
if hasattr(cache.module, "__mp_purge__"):
try:
cache.module.__mp_purge__()
except:
self._log_exception()
cache.module = None
# Setup a fresh new module yet again.
module = imp.new_module(label)
if log:
if cache.module == None:
msg = "Importing module '%s'" % file
self._log_notice(msg)
else:
msg = "Reimporting module '%s'" % file
self._log_notice(msg)
else:
if log:
msg = "Importing module '%s'" % file
self._log_notice(msg)
# Must add to the module the path to the modules
# file. This ensures that module looks like a
# normal module and this path will also be used
# in certain contexts when the import statement
# is used within the module.
module.__file__ = file
# Setup a new instance object to store in the
# module. This will refer back to the actual
# cache entry and is used to record information
# which is specific to this incarnation of the
# module when reloading is occuring.
instance = _InstanceInfo(label, file, cache)
module.__mp_info__ = instance
# Cache any additional module search path which
# should be used for this instance of the module
# or package. The path shouldn't be able to be
# changed during the lifetime of the module to
# ensure that module imports are always done
# against the same path.
if path is None:
path = []
module.__mp_path__ = list(path)
# Place a reference to the module within the
# request specific cache of imported modules.
# This makes module lookup more efficient when
# the same module is imported more than once
# within the context of a request. In the case
# of a cyclical import, avoids a never ending
# recursive loop.
if modules is not None:
modules[label] = module
# If this is a child import of some parent
# module, add this module as a child of the
# parent.
atime = time.time()
if parent_info:
parent_info.children[label] = atime
# Perform actual import of the module.
try:
execfile(file, module.__dict__)
except:
# Importation of the module has failed for
# some reason. If this is the very first
# import of the module, need to discard the
# cache entry entirely else a subsequent
# attempt to load the module will wrongly
# think it was successfully loaded already.
if cache.module is None:
del self._cache[label]
raise
# Update the cache and clear the reload flag.
cache.module = module
cache.reload = 0
# Need to also update the list of child modules
# stored in the cache entry with the actual
# children found during the import. A copy is
# made, meaning that any future imports
# performed within the context of the request
# handler don't result in the module later being
# reloaded if they change.
cache.children = dict(module.__mp_info__.children)
# Create link to embedded path at end of import.
cache.path = module.__mp_path__
# Increment the generation count of the global
# state of all modules. This is used in the
# dependency management scheme for reloading to
# determine if a module dependency has been
# reloaded since it was loaded.
self._lock2.acquire()
self._generation = self._generation + 1
cache.generation = self._generation
self._lock2.release()
# Update access time and reset access counts.
cache.ctime = atime
cache.atime = atime
cache.direct = 1
cache.indirect = 0
else:
# Update the cache.
module = cache.module
# Place a reference to the module within the
# request specific cache of imported modules.
# This makes module lookup more efficient when
# the same module is imported more than once
# within the context of a request. In the case
# of a cyclical import, avoids a never ending
# recursive loop.
if modules is not None:
modules[label] = module
# If this is a child import of some parent
# module, add this module as a child of the
# parent.
atime = time.time()
if parent_info:
parent_info.children[label] = atime
# Didn't need to reload the module so simply
# increment access counts and last access time.
cache.atime = atime
cache.direct = cache.direct + 1
return module
finally:
# Lock on cache object can now be released.
if cache is not None:
cache.lock.release()
def _reload_required(self, modules, label, file, autoreload):
# Make sure cache lock is always released.
try:
self._lock1.acquire()
# Check if this is a new module.
if not self._cache.has_key(label):
mtime = os.path.getmtime(file)
cache = _CacheInfo(label, file, mtime)
self._cache[label] = cache
return (cache, True)
# Grab entry from cache.
cache = self._cache[label]
# Check if reloads have been disabled.
# Only avoid a reload though if module
# hadn't been explicitly marked to be
# reloaded.
if not cache.reload:
if self._frozen or not autoreload:
return (cache, False)
# Determine modification time of file.
try:
mtime = os.path.getmtime(file)
except:
# Must have been removed just then. We return
# currently cached module and avoid a reload.
# Defunct module would need to be purged later.
msg = 'Module code file has been removed. '
msg = msg + 'This may cause problems. Using cached module. '
msg = msg + 'File being imported "%s".' % file
self._log_warning(msg)
return (cache, False)
# Check if modification time has changed or
# if module has been flagged to be reloaded.
if cache.reload or mtime != cache.mtime:
cache.mtime = mtime
return (cache, True)
# Check if children have changed in any way
# that would require a reload.
if cache.children:
visited = {}
ancestors = [label]
for tag in cache.children:
# If the child isn't in the cache any longer
# for some reason, force a reload.
if not self._cache.has_key(tag):
return (cache, True)
child = self._cache[tag]
# Now check the actual child module.
if self._check_module(modules, cache, child,
visited, ancestors):
return (cache, True)
# No need to reload the module. Module
# should be cached in the request object by
# the caller if required.
return (cache, False)
finally:
self._lock1.release()
def _check_module(self, modules, parent, current, visited, ancestors):
# Update current modules access statistics.
current.indirect = current.indirect + 1
current.atime = time.time()
# Check if current module has been marked
# for reloading.
if current.reload:
return True
# Check if current module has been reloaded
# since the parent was last loaded.
if current.generation > parent.generation:
return True
# If the current module has been visited
# already, no need to continue further as it
# should be up to date.
if visited.has_key(current.label):
return False
# Check if current module has been modified on
# disk since last loaded.
try:
mtime = os.path.getmtime(current.file)
if mtime != current.mtime:
return True
except:
# Current module must have been removed.
# Don't cause this to force a reload though
# as can cause problems. Rely on the parent
# being modified to cause a reload.
msg = 'Module code file has been removed. '
msg = msg + 'This may cause problems. Using cached module. '
msg = msg + 'File being imported "%s".' % current.file
self._log_warning(msg)
if modules is not None:
modules[current.label] = current.module
return False
# Check to see if all the children of the
# current module need updating or are newer than
# the current module.
if current.children:
ancestors = ancestors + [current.label]
for label in current.children.keys():
# Check for a child which refers to one of its
# ancestors. Hopefully this will never occur. If
# it does we will force a reload every time to
# highlight there is a problem. Note this does
# not get detected first time module is loaded,
# only here on subsequent checks. If reloading
# is not enabled, then problem will never be
# detected and flagged.
if label in ancestors:
msg = 'Module imports an ancestor module. '
msg = msg + 'This may cause problems. Please check code. '
msg = msg + 'File doing import is "%s".' % current.file
self._log_warning(msg)
return True
# If the child isn't in the cache any longer for
# some reason, force a reload.
if not self._cache.has_key(label):
return True
child = self._cache[label]
# Recurse back into this function to check
# child.
if self._check_module(modules, current, child,
visited, ancestors):
return True
# No need to reload the current module. Now safe
# to mark the current module as having been
# visited and cache it into the request object
# for quick later lookup if a parent needs to be
# reloaded.
visited[current.label] = current
if modules is not None:
modules[current.label] = current.module
return False
def _module_label(self, file):
# The label is used in the __name__ field of the
# module and then used in determining child
# module imports. Thus really needs to be
# unique. We don't really want to use a module
# name which is a filesystem path. Hope MD5 hex
# digest is okay.
return self._prefix + md5.new(file).hexdigest()
_global_modules_cache = _ModuleCache()
def _get_global_modules_cache():
return _global_modules_cache
apache.freeze_modules = _global_modules_cache.freeze_modules
apache.modules_graph = _global_modules_cache.modules_graph
apache.module_info = _global_modules_cache.module_info
class _ModuleLoader:
def __init__(self, file):
self.__file = file
def load_module(self, fullname):
return _global_modules_cache.import_module(self.__file)
class _ModuleImporter:
def find_module(self, fullname, path=None):
# Return straight away if requested to import a
# sub module of a package.
if '.' in fullname:
return None
# Retrieve the parent context. That is, the
# details stashed into the parent module by the
# module importing system itself. Only consider
# using the module importing system for 'import'
# statement if parent module was imported using
# the same.
(parent_info, parent_path) = _parent_context()
if parent_info is None:
return None
# Determine the list of directories that need to
# be searched for a module code file. These
# directories will be, the directory of the
# parent and any specified search path. When
# enabled, the handler root directory will also
# be searched.
search_path = []
directory = os.path.dirname(parent_info.file)
search_path.append(directory)
if parent_path is not None:
search_path.extend(parent_path)
options = get_current_options()
if options.has_key('mod_python.importer.path'):
directory = eval(options['mod_python.importer.path'])
search_path.extend(directory)
# Return if we have no search path to search.
if not search_path:
return None
# Attempt to find the code file for the module.
file = _find_module(fullname, search_path)
if file is not None:
return _ModuleLoader(file)
return None
sys.meta_path.insert(0, _ModuleImporter())
# Replace mod_python.publisher page cache object with a
# dummy object which uses new module importer.
class _PageCache:
def __getitem__(self,req):
return import_module(req.filename)
publisher.xpage_cache = publisher.page_cache
publisher.page_cache = _PageCache()
# Define alternate implementations of the top level
# mod_python entry points and substitute them for the
# standard one in the 'mod_python.apache' callback
# object.
_callback = apache._callback
_callback.xConnectionDispatch = _callback.ConnectionDispatch
_callback.xFilterDispatch = _callback.FilterDispatch
_callback.xHandlerDispatch = _callback.HandlerDispatch
_callback.xIncludeDispatch = _callback.IncludeDispatch
_callback.xImportDispatch = _callback.ImportDispatch
_callback.xReportError = _callback.ReportError
_result_warning = """Handler has returned result or raised SERVER_RETURN
exception with argument having non integer type. Type of value returned
was %s, whereas expected """ + str(types.IntType) + "."
_status_values = {
"postreadrequesthandler": [ apache.DECLINED, apache.OK ],
"transhandler": [ apache.DECLINED ],
"maptostoragehandler": [ apache.DECLINED ],
"inithandler": [ apache.DECLINED, apache.OK ],
"headerparserhandler": [ apache.DECLINED, apache.OK ],
"accesshandler": [ apache.DECLINED, apache.OK ],
"authenhandler": [ apache.DECLINED ],
"authzhandler": [ apache.DECLINED ],
"typehandler": [ apache.DECLINED ],
"fixuphandler": [ apache.DECLINED, apache.OK ],
"loghandler": [ apache.DECLINED, apache.OK ],
"handler": [ apache.DECLINED, apache.OK ],
}
def _execute_target(config, req, object, arg):
try:
# Only permit debugging using pdb if Apache has
# actually been started in single process mode.
pdb_debug = int(config.get("PythonEnablePdb", "0"))
one_process = apache.exists_config_define("ONE_PROCESS")
if pdb_debug and one_process:
# Don't use pdb.runcall() as it results in
# a bogus 'None' response when pdb session
# is quit. With this code the exception
# marking that the session has been quit is
# propogated back up and it is obvious in
# the error message what actually occurred.
debugger = pdb.Pdb()
debugger.reset()
sys.settrace(debugger.trace_dispatch)
try:
result = object(arg)
finally:
debugger.quitting = 1
sys.settrace(None)
else:
result = object(arg)
except apache.SERVER_RETURN, value:
# For a connection handler, there is no request
# object so this form of response is invalid.
# Thus exception is reraised to be handled later.
if not req:
raise
# The SERVER_RETURN exception type when raised
# otherwise indicates an abort from below with
# value as (result, status) or (result, None) or
# result.
if len(value.args) == 2:
(result, status) = value.args
if status:
req.status = status
else:
result = value.args[0]
# Only check type of return value for connection
# handlers and request phase handlers. The return
# value of filters are ultimately ignored.
if not req or req == arg:
assert (type(result) == types.IntType), _result_warning % type(result)
return result
def _process_target(config, req, directory, handler, default, arg, silent):
if not callable(handler):
# Determine module name and target object.
parts = handler.split('::', 1)
module_name = parts[0]
if len(parts) == 1:
object_str = default
else:
object_str = parts[1]
# Update 'sys.path'. This will only be done if we
# have not encountered the current value of the
# 'PythonPath' config previously.
if config.has_key("PythonPath"):
apache._path_cache_lock.acquire()
try:
pathstring = config["PythonPath"]
if not apache._path_cache.has_key(pathstring):
newpath = eval(pathstring)
apache._path_cache[pathstring] = None
sys.path[:] = newpath
finally:
apache._path_cache_lock.release()
# Import module containing target object. Specify
# the handler root directory in the search path so
# that it is still checked even if 'PythonPath' set.
path = []
if directory:
path = [directory]
module = import_module(module_name, path=path)
# Obtain reference to actual target object.
object = apache.resolve_object(module, object_str, arg, silent=silent)
else:
# Handler is the target object.
object = handler
# Lookup expected status values that allow us to
# continue when multiple handlers exist.
expected = _status_values.get(default, None)
# Default to apache.DECLINED unless in content
# handler phase.
if not expected or apache.DECLINED not in expected:
result = apache.OK
else:
result = apache.DECLINED
if object is not None or not silent:
result = _execute_target(config, req, object, arg)
# Stop iteration when target object returns a
# value other than expected values for the phase.
if expected and result not in expected:
return (True, result)
return (False, result)
def ConnectionDispatch(self, conn):
"""
This is the dispatcher for connection handlers.
"""
# Determine the default handler name.
default_handler = "connectionhandler"
# Be cautious and return server error as default.
result = apache.HTTP_INTERNAL_SERVER_ERROR
# Setup transient per request modules cache. Note
# that this cache will always be thrown away when
# connection handler returns as there is no way to
# transfer ownership and responsibility for
# discarding the cache entry to latter handlers.
_setup_request_modules_cache()
try:
try:
# Cache the server configuration for the
# current request so that it will be
# available from within 'import_module()'.
config = conn.base_server.get_config()
options = conn.base_server.get_options()
cache = _setup_current_cache(config, options, None)
(aborted, result) = _process_target(config=config, req=None,
directory=None, handler=conn.hlist.handler,
default=default_handler, arg=conn, silent=0)
finally:
# Restore any previous cached configuration.
# There should not actually be any, but this
# will cause the configuration cache entry to
# be discarded.
_setup_current_cache(*cache)
# Also discard the modules cache entry.
_cleanup_request_modules_cache()
except apache.PROG_TRACEBACK, traceblock:
# Program runtime error flagged by the application.
debug = int(config.get("PythonDebug", 0))
try:
(exc_type, exc_value, exc_traceback) = traceblock
result = self.ReportError(exc_type, exc_value, exc_traceback,
conn=conn, phase="ConnectionHandler",
hname=conn.hlist.handler, debug=debug)
finally:
exc_traceback = None
except:
# Module loading error or some other runtime error.
debug = int(config.get("PythonDebug", 0))
try:
exc_type, exc_value, exc_traceback = sys.exc_info()
result = self.ReportError(exc_type, exc_value, exc_traceback,
conn=conn, phase="ConnectionHandler",
hname=conn.hlist.handler, debug=debug)
finally:
exc_traceback = None
return result
def FilterDispatch(self, filter):
"""
This is the dispatcher for input/output filters.
"""
# Determine the default handler name.
if filter.is_input:
default_handler = "inputfilter"
else:
default_handler = "outputfilter"
# Setup transient per request modules cache. Note
# that this will only actually do anything in this
# case if no Python request phase handlers have been
# specified. A cleanup handler is registered to
# later discard the cache entry if it was created.
_setup_request_modules_cache(filter.req)
try:
try:
directory = filter.dir
handler = filter.handler
# If directory for filter is not set,
# then search back through parents and
# inherit value from parent if found.
if directory is None:
parent = filter.parent
while parent is not None:
if parent.directory is not None:
directory = parent.directory
break
parent = parent.parent
# If directory for filter still not
# able to be determined, use the server
# document root.
if directory is None:
directory = filter.req.document_root()
# Expand relative addressing shortcuts.
if type(handler) == types.StringType:
if handler[:2] == './':
if directory is not None:
handler = os.path.join(directory, handler[2:])
elif handler[:3] == '../':
if directory is not None:
handler = os.path.join(directory, handler)
# Cache the server configuration for the
# current request so that it will be
# available from within 'import_module()'.
config = filter.req.get_config()
options = filter.req.get_options()
cache = _setup_current_cache(config, options, directory)
(aborted, result) = _process_target(config=config,
req=filter.req, directory=directory,
handler=handler, default=default_handler,
arg=filter, silent=0)
if not filter.closed:
filter.flush()
finally:
# Restore any previous cached configuration.
_setup_current_cache(*cache)
except apache.PROG_TRACEBACK, traceblock:
# Program runtime error flagged by the application.
debug = int(config.get("PythonDebug", 0))
filter.disable()
try:
(exc_type, exc_value, exc_traceback) = traceblock
result = self.ReportError(exc_type, exc_value,
exc_traceback, req=filter.req, filter=filter,
phase="Filter (%s)"%filter.name,
hname=filter.handler, debug=debug)
finally:
exc_traceback = None
except:
# Module loading error or some other runtime error.
debug = int(config.get("PythonDebug", 0))
filter.disable()
try:
exc_type, exc_value, exc_traceback = sys.exc_info()
result = self.ReportError(exc_type, exc_value,
exc_traceback, req=filter.req, filter=filter,
phase="Filter: " + filter.name,
hname=filter.handler, debug=debug)
finally:
exc_traceback = None
return apache.OK
def HandlerDispatch(self, req):
"""
This is the dispatcher for handler phases.
"""
# Cache name of phase in case something changes it.
phase = req.phase
# Determine the default handler name.
default_handler = phase[len("python"):].lower()
# Be cautious and return server error as default.
result = apache.HTTP_INTERNAL_SERVER_ERROR
# Setup transient per request modules cache. Note
# that this will only do something if this is the
# first Python request handler phase to be executed.
# A cleanup handler is registered to later discard
# the cache entry if it needed to be created.
_setup_request_modules_cache(req)
# Cache configuration for later.
config = req.get_config()
options = req.get_options()
try:
(aborted, hlist) = False, req.hlist
# The actual handler root is the directory
# associated with the handler first in the
# chain. This may be a handler which was called
# in an earlier phase if the req.add_handler()
# method was used. The directory for those that
# follow the first may have been overridden by
# directory supplied to the req.add_handler()
# method.
root = hlist.directory
parent = hlist.parent
while parent is not None:
root = parent.directory
parent = parent.parent
# If directory for handler still not able to be
# determined, use the server document root.
if root is None:
root = req.document_root()
# Iterate over the handlers defined for the
# current phase and execute each in turn
# until the last is reached or prematurely
# aborted.
while not aborted and hlist.handler is not None:
try:
cache = None
directory = hlist.directory
handler = hlist.handler
# If directory for handler is not set,
# then search back through parents and
# inherit value from parent if found.
# This directory is that where modules
# are searched for first and may not be
# the same as the handler root if it
# was supplied explicitly to the method
# req.add_handler().
if directory is None:
parent = hlist.parent
while parent is not None:
if parent.directory is not None:
directory = parent.directory
break
parent = parent.parent
# Expand relative addressing shortcuts.
if type(handler) == types.StringType:
if handler[:2] == './':
if directory is not None:
handler = os.path.join(directory, handler[2:])
elif handler[:3] == '../':
if directory is not None:
handler = os.path.join(directory, handler)
# Cache the server configuration for the
# current request so that it will be
# available from within 'import_module()'.
cache = _setup_current_cache(config, options, root)
(aborted, result) = _process_target(config=config, req=req,
directory=directory, handler=handler,
default=default_handler, arg=req, silent=hlist.silent)
finally:
# Restore any previous cached configuration.
_setup_current_cache(*cache)
hlist.next()
except apache.PROG_TRACEBACK, traceblock:
# Program runtime error flagged by the application.
debug = int(config.get("PythonDebug", 0))
try:
(exc_type, exc_value, exc_traceback) = traceblock
result = self.ReportError(exc_type, exc_value,
exc_traceback, req=req, phase=phase,
hname=hlist.handler, debug=debug)
finally:
exc_traceback = None
except:
# Module loading error or some other runtime error.
debug = int(config.get("PythonDebug", 0))
try:
exc_type, exc_value, exc_traceback = sys.exc_info()
result = self.ReportError(exc_type, exc_value,
exc_traceback, req=req, phase=phase,
hname=hlist.handler, debug=debug)
finally:
exc_traceback = None
return result
_callback.ConnectionDispatch = new.instancemethod(
ConnectionDispatch, _callback, apache.CallBack)
_callback.FilterDispatch = new.instancemethod(
FilterDispatch, _callback, apache.CallBack)
_callback.HandlerDispatch = new.instancemethod(
HandlerDispatch, _callback, apache.CallBack)
def IncludeDispatch(self, filter, tag, code):
# Setup transient per request modules cache. Note
# that this will only actually do anything in this
# case if no Python request phase handlers have been
# specified. A cleanup handler is registered to
# later discard the cache entry if it was created.
_setup_request_modules_cache(filter.req)
try:
try:
# Cache the server configuration for the
# current request so that it will be
# available from within 'import_module()'.
config = filter.req.get_config()
options = filter.req.get_options()
cache = _setup_current_cache(config, options, None)
debug = int(config.get("PythonDebug", 0))
if not hasattr(filter.req,"ssi_globals"):
filter.req.ssi_globals = {}
filter.req.ssi_globals["filter"] = filter
class _InstanceInfo:
def __init__(self, label, file, cache):
self.label = label
self.file = file
self.cache = cache
self.children = {}
filter.req.ssi_globals["__file__"] = filter.req.filename
filter.req.ssi_globals["__mp_info__"] = _InstanceInfo(
None, filter.req.filename, None)
filter.req.ssi_globals["__mp_path__"] = []
code = code.replace('\r\n', '\n').rstrip()
if tag == 'eval':
result = eval(code, filter.req.ssi_globals)
if result is not None:
filter.write(str(result))
elif tag == 'exec':
exec(code, filter.req.ssi_globals)
filter.flush()
finally:
filter.req.ssi_globals["filter"] = None
# Restore any previous cached configuration.
_setup_current_cache(*cache)
except:
try:
exc_type, exc_value, exc_traceback = sys.exc_info()
result = self.ReportError(exc_type, exc_value, exc_traceback,
filter=filter, phase=filter.name,
hname=filter.req.filename, debug=debug)
finally:
exc_traceback = None
raise
return apache.OK
_callback.IncludeDispatch = new.instancemethod(
IncludeDispatch, _callback, apache.CallBack)
def ImportDispatch(self, name):
config = apache.main_server.get_config()
debug = int(config.get("PythonDebug", "0"))
# evaluate pythonpath and set sys.path to
# resulting value if not already done
if config.has_key("PythonPath"):
apache._path_cache_lock.acquire()
try:
pathstring = config["PythonPath"]
if not apache._path_cache.has_key(pathstring):
newpath = eval(pathstring)
apache._path_cache[pathstring] = None
sys.path[:] = newpath
finally:
apache._path_cache_lock.release()
# split module::function
l = name.split('::', 1)
module_name = l[0]
func_name = None
if len(l) != 1:
func_name = l[1]
try:
# Setup transient per request modules cache.
# Note that this cache will always be thrown
# away when the module has been imported.
_setup_request_modules_cache()
# Import the module.
module = import_module(module_name, log=debug)
# Optionally call function within module.
if func_name:
getattr(module, func_name)()
finally:
# Discard the modules cache entry.
_cleanup_request_modules_cache()
_callback.ImportDispatch = new.instancemethod(
ImportDispatch, _callback, apache.CallBack)
def ReportError(self, etype, evalue, etb, conn=None, req=None, filter=None,
phase="N/A", hname="N/A", debug=0):
try:
try:
if str(etype) == "exceptions.IOError" \
and str(evalue)[:5] == "Write":
# If this is an I/O error while writing to
# client, it is probably better not to try to
# write to the cleint even if debug is on.
# XXX Note that a failure to write back data in
# a response should be indicated by a special
# exception type which is caught here and not a
# generic I/O error as there could be false
# positives. See MODPYTHON-92.
debug = 0
# Determine which log function we are going
# to use to output any messages.
if filter and not req:
req = filter.req
if req:
log_error = req.log_error
elif conn:
log_error = conn.log_error
else:
log_error = apache.main_server.log_error
# Always log the details of any exception.
pid = os.getpid()
iname = apache.interpreter
flags = apache.APLOG_NOERRNO|apache.APLOG_ERR
text = "mod_python (pid=%d, interpreter=%s, " % (pid, `iname`)
text = text + "phase=%s, handler=%s)" % (`phase`, `hname`)
text = text + ": Application error"
log_error(text, flags)
if req:
location = None
directory = None
context = req.hlist
if context:
while context.parent != None:
context = context.parent
location = context.location
directory = context.directory
hostname = req.server.server_hostname
root = req.document_root()
log_error('ServerName: %s' % `hostname`, flags)
log_error('DocumentRoot: %s' % `root`, flags)
log_error('URI: %s' % `req.uri`, flags)
log_error('Location: %s' % `location`, flags)
log_error('Directory: %s' % `directory`, flags)
log_error('Filename: %s' % `req.filename`, flags)
log_error('PathInfo: %s' % `req.path_info`, flags)
tb = traceback.format_exception(etype, evalue, etb)
for line in tb:
log_error(line[:-1], flags)
if not debug or not req:
return apache.HTTP_INTERNAL_SERVER_ERROR
output = StringIO.StringIO()
req.status = apache.HTTP_INTERNAL_SERVER_ERROR
req.content_type = 'text/html'
print >> output
print >> output, '<pre>'
print >> output, 'MOD_PYTHON ERROR'
print >> output
print >> output, 'ProcessId: %s' % pid
print >> output, 'Interpreter: %s' % `iname`
if req:
print >> output
print >> output, 'ServerName: %s' % `hostname`
print >> output, 'DocumentRoot: %s' % `root`
print >> output
print >> output, 'URI: %s' % `req.uri`
print >> output, 'Location: %s' % `location`
print >> output, 'Directory: %s' % `directory`
print >> output, 'Filename: %s' % `req.filename`
print >> output, 'PathInfo: %s' % `req.path_info`
print >> output
print >> output, 'Phase: %s' % `phase`
print >> output, 'Handler: %s' % cgi.escape(repr(hname))
print >> output
for line in tb:
print >> output, cgi.escape(line)
modules = _get_request_modules_cache()
if modules.ctime != 0:
accessed = time.asctime(time.localtime(modules.ctime))
print >> output
print >> output, 'MODULE CACHE DETAILS'
print >> output
print >> output, 'Accessed: %s' % accessed
print >> output, 'Generation: %s' % modules.generation
print >> output
labels = {}
keys = modules.keys()
for key in keys:
module = modules[key]
labels[module.__file__] = key
keys = labels.keys()
keys.sort()
for key in keys:
label = labels[key]
module = modules[label]
name = module.__name__
filename = module.__file__
cache = module.__mp_info__.cache
ctime = time.asctime(time.localtime(cache.ctime))
mtime = time.asctime(time.localtime(cache.mtime))
atime = time.asctime(time.localtime(cache.atime))
instance = cache.instance
generation = cache.generation
direct = cache.direct
indirect = cache.indirect
path = module.__mp_path__
print >> output, '%s {' % name
print >> output, ' FileName: %s' % `filename`
print >> output, ' Instance: %s' % instance,
if instance == 1 and (cache.reload or \
generation > modules.generation):
print >> output, '[IMPORT]'
elif cache.reload or generation > modules.generation:
print >> output, '[RELOAD]'
else:
print >> output
print >> output, ' Generation: %s' % generation,
if cache.reload:
print >> output, '[ERROR]'
else:
print >> output
if cache.mtime:
print >> output, ' Modified: %s' % mtime
if cache.ctime:
print >> output, ' Imported: %s' % ctime
if path:
text = ',\n '.join(map(repr, path))
print >> output, ' ModulePath: %s' % text
friends = []
children = []
if cache.reload:
for child in module.__mp_info__.children:
entry = modules[child].__mp_info__.file
children.append(entry)
else:
for child in module.__mp_info__.cache.children:
entry = modules[child].__mp_info__.file
children.append(entry)
for child in module.__mp_info__.children:
if child not in module.__mp_info__.cache.children:
try:
entry = modules[child].__mp_info__.file
friends.append(entry)
except:
try:
entry = apache.module_info(child).file
friends.append(entry)
except:
pass
children.sort()
friends.sort()
if children:
text = ',\n '.join(map(repr, children))
print >> output, ' Children: %s' % text
if friends:
text = ',\n '.join(map(repr, friends))
print >> output, ' Friends: %s' % text
print >> output, '}'
print >> output
print >> output, '</pre>'
text = output.getvalue()
if filter:
filter.write(text)
filter.flush()
else:
req.write(text)
return apache.DONE
except:
# When all else fails try and dump traceback
# directory standard error and flush it.
traceback.print_exc()
sys.stderr.flush()
finally:
etb = None
_callback.ReportError = new.instancemethod(
ReportError, _callback, apache.CallBack)
|