3 """Automated tests of the apt-dht functionality.
5 This script runs several automatic tests of some of the functionality in
8 @type tests: C{dictionary}
9 @var tests: all of the tests that can be run.
10 The keys are the test names (strings) which are used on the command-line
11 to identify the tests (can not be 'all' or 'help'). The values are tuples
12 with four elements: a description of the test (C{string}), the bootstrap
13 nodes to start (C{dictionary}), the downloaders to start (C{dictionary},
14 and the apt-get commands to run (C{list}).
16 The bootstrap nodes keys are integers, which must be in the range 1-9.
17 The values are the dictionary of string formatting values for creating
18 the apt-dht configuration file (see L{apt_dht_conf_template} below).
20 The downloaders keys are also integers in the range 1-99. The values are
21 the dictionary of string formatting values for creating the apt-dht
22 configuration file (see L{apt_dht_conf_template} below).
24 The apt-get commands' list elements are tuples with 2 elements: the
25 downloader to run the command on, and the list of command-line
26 arguments to specify to the apt-get program.
29 @var CWD: the working directory the script was run from
30 @type apt_conf_template: C{string}
31 @var apt_conf_template: the template to use for the apt.conf file
35 from time import sleep, time
36 import sys, os, signal
37 from traceback import print_exc
38 from os.path import exists
40 tests = {'1': ('Start a single bootstrap and downloader, test updating and downloading ' +
45 (1, ['install', 'aboot-base']),
46 (1, ['install', 'aap-doc']),
47 (1, ['install', 'ada-reference-manual']),
48 (1, ['install', 'aspectj-doc']),
49 (1, ['install', 'fop-doc']),
50 (1, ['install', 'jswat-doc']),
51 (1, ['install', 'asis-doc']),
52 (1, ['install', 'bison-doc']),
53 (1, ['install', 'crash-whitepaper']),
54 (1, ['install', 'doc-iana']),
57 '2': ('Start a single bootstrap and 2 downloaders to test downloading from a peer.',
63 (1, ['install', 'aboot-base']),
64 (2, ['install', 'aboot-base']),
65 (1, ['install', 'aap-doc']),
66 (1, ['install', 'ada-reference-manual']),
67 (1, ['install', 'fop-doc']),
68 (1, ['install', 'jswat-doc']),
69 (1, ['install', 'bison-doc']),
70 (1, ['install', 'crash-whitepaper']),
71 (2, ['install', 'aap-doc']),
72 (2, ['install', 'ada-reference-manual']),
73 (2, ['install', 'fop-doc']),
74 (2, ['install', 'jswat-doc']),
75 (2, ['install', 'bison-doc']),
76 (2, ['install', 'crash-whitepaper']),
79 '3': ('Start a single bootstrap and 6 downloaders, to test downloading' +
80 ' speeds from each other.',
89 (1, ['install', 'aboot-base']),
90 (1, ['install', 'ada-reference-manual']),
91 (1, ['install', 'fop-doc']),
92 (1, ['install', 'doc-iana']),
94 (2, ['install', 'aboot-base']),
95 (2, ['install', 'ada-reference-manual']),
96 (2, ['install', 'fop-doc']),
97 (2, ['install', 'doc-iana']),
99 (3, ['install', 'aboot-base']),
100 (3, ['install', 'ada-reference-manual']),
101 (3, ['install', 'fop-doc']),
102 (3, ['install', 'doc-iana']),
104 (4, ['install', 'aboot-base']),
105 (4, ['install', 'ada-reference-manual']),
106 (4, ['install', 'fop-doc']),
107 (4, ['install', 'doc-iana']),
109 (5, ['install', 'aboot-base']),
110 (5, ['install', 'ada-reference-manual']),
111 (5, ['install', 'fop-doc']),
112 (5, ['install', 'doc-iana']),
114 (6, ['install', 'aboot-base']),
115 (6, ['install', 'ada-reference-manual']),
116 (6, ['install', 'fop-doc']),
117 (6, ['install', 'doc-iana']),
120 '4': ('Start a single bootstrap and 1 downloader, requesting the same' +
121 ' packages multiple times to test caching.',
125 (1, ['install', 'aboot-base']),
126 (1, ['install', 'ada-reference-manual']),
127 (1, ['install', 'fop-doc']),
128 (1, ['install', 'doc-iana']),
130 (1, ['install', 'aboot-base']),
131 (1, ['install', 'ada-reference-manual']),
132 (1, ['install', 'fop-doc']),
133 (1, ['install', 'doc-iana']),
135 (1, ['install', 'aboot-base']),
136 (1, ['install', 'ada-reference-manual']),
137 (1, ['install', 'fop-doc']),
138 (1, ['install', 'doc-iana']),
141 '5': ('Start a single bootstrap and 6 downloaders, update all to test' +
142 ' that they can all see each other.',
144 {1: ([], {'suites': 'contrib non-free'}),
145 2: ([], {'suites': 'contrib non-free'}),
146 3: ([], {'suites': 'contrib non-free'}),
147 4: ([], {'suites': 'contrib non-free'}),
148 5: ([], {'suites': 'contrib non-free'}),
149 6: ([], {'suites': 'contrib non-free'})},
158 '6': ('Test caching with multiple apt-get updates.',
167 '7': ('Test pipelining of multiple simultaneous downloads.',
171 (1, ['install', 'aboot-base', 'aap-doc', 'ada-reference-manual',
172 'aspectj-doc', 'fop-doc', 'jswat-doc', 'asis-doc',
173 'bison-doc', 'crash-whitepaper', 'doc-iana',
174 'bash-doc', 'apt-howto-common', 'autotools-dev',
175 'aptitude-doc-en', 'armagetron-common', 'asr-manpages',
176 'atomix-data', 'alcovebook-sgml-doc', 'alamin-doc',
177 'aegis-doc', 'afbackup-common', 'airstrike-common',
181 '8': ('Test pipelining of multiple simultaneous downloads with many peers.',
190 (1, ['install', 'aboot-base', 'aap-doc', 'ada-reference-manual',
191 'aspectj-doc', 'fop-doc', 'jswat-doc', 'asis-doc',
192 'bison-doc', 'crash-whitepaper', 'doc-iana',
193 'bash-doc', 'apt-howto-common', 'autotools-dev',
194 'aptitude-doc-en', 'armagetron-common', 'asr-manpages',
195 'atomix-data', 'alcovebook-sgml-doc', 'alamin-doc',
196 'aegis-doc', 'afbackup-common', 'airstrike-common',
199 (2, ['install', 'aboot-base', 'aap-doc', 'ada-reference-manual',
200 'aspectj-doc', 'fop-doc', 'jswat-doc', 'asis-doc',
201 'bison-doc', 'crash-whitepaper', 'doc-iana',
202 'bash-doc', 'apt-howto-common', 'autotools-dev',
203 'aptitude-doc-en', 'armagetron-common', 'asr-manpages',
204 'atomix-data', 'alcovebook-sgml-doc', 'alamin-doc',
205 'aegis-doc', 'afbackup-common', 'airstrike-common',
208 (3, ['install', 'aboot-base', 'aap-doc', 'ada-reference-manual',
209 'aspectj-doc', 'fop-doc', 'jswat-doc', 'asis-doc',
210 'bison-doc', 'crash-whitepaper', 'doc-iana',
211 'bash-doc', 'apt-howto-common', 'autotools-dev',
212 'aptitude-doc-en', 'armagetron-common', 'asr-manpages',
213 'atomix-data', 'alcovebook-sgml-doc', 'alamin-doc',
214 'aegis-doc', 'afbackup-common', 'airstrike-common',
217 (4, ['install', 'aboot-base', 'aap-doc', 'ada-reference-manual',
218 'aspectj-doc', 'fop-doc', 'jswat-doc', 'asis-doc',
219 'bison-doc', 'crash-whitepaper', 'doc-iana',
220 'bash-doc', 'apt-howto-common', 'autotools-dev',
221 'aptitude-doc-en', 'armagetron-common', 'asr-manpages',
222 'atomix-data', 'alcovebook-sgml-doc', 'alamin-doc',
223 'aegis-doc', 'afbackup-common', 'airstrike-common',
226 (5, ['install', 'aboot-base', 'aap-doc', 'ada-reference-manual',
227 'aspectj-doc', 'fop-doc', 'jswat-doc', 'asis-doc',
228 'bison-doc', 'crash-whitepaper', 'doc-iana',
229 'bash-doc', 'apt-howto-common', 'autotools-dev',
230 'aptitude-doc-en', 'armagetron-common', 'asr-manpages',
231 'atomix-data', 'alcovebook-sgml-doc', 'alamin-doc',
232 'aegis-doc', 'afbackup-common', 'airstrike-common',
235 (6, ['install', 'aboot-base', 'aap-doc', 'ada-reference-manual',
236 'aspectj-doc', 'fop-doc', 'jswat-doc', 'asis-doc',
237 'bison-doc', 'crash-whitepaper', 'doc-iana',
238 'bash-doc', 'apt-howto-common', 'autotools-dev',
239 'aptitude-doc-en', 'armagetron-common', 'asr-manpages',
240 'atomix-data', 'alcovebook-sgml-doc', 'alamin-doc',
241 'aegis-doc', 'afbackup-common', 'airstrike-common',
247 assert 'all' not in tests
248 assert 'help' not in tests
251 apt_conf_template = """
253 // Location of the state dir
258 userstatus "status.user";
259 cdroms "cdroms.list";
262 // Location of the cache dir
263 Cache "var/cache/apt/" {
264 Archives "archives/";
265 srcpkgcache "srcpkgcache.bin";
266 pkgcache "pkgcache.bin";
271 SourceList "sources.list";
273 Preferences "preferences";
277 // Locations of binaries
279 methods "/usr/lib/apt/methods/";
282 dpkg "/usr/bin/dpkg --simulate";
283 dpkg-source "/usr/bin/dpkg-source";
284 dpkg-buildpackage "/usr/bin/dpkg-buildpackage";
285 apt-get "/usr/bin/apt-get";
286 apt-cache "/usr/bin/apt-cache";
290 /* Options you can set to see some debugging text They correspond to names
291 of classes in the source code */
294 pkgProblemResolver "false";
295 pkgDepCache::AutoInstall "false"; // what packages apt install to satify dependencies
297 pkgAcquire::Worker "false";
298 pkgAcquire::Auth "false";
300 pkgDPkgProgressReporting "false";
301 pkgOrderList "false";
304 pkgInitialize "false"; // This one will dump the configuration space
306 Acquire::Ftp "false"; // Show ftp command traffic
307 Acquire::Http "false"; // Show http command traffic
308 Acquire::Debtorrent "false"; // Show http command traffic
309 Acquire::gpgv "false"; // Show the gpgv traffic
310 aptcdrom "false"; // Show found package files
315 apt_dht_conf_template = """
318 # Port to listen on for all requests (TCP and UDP)
321 # Directory to store the downloaded files in
322 CACHE_DIR = %(CACHE_DIR)s
324 # Other directories containing packages to share with others
325 # WARNING: all files in these directories will be hashed and available
326 # for everybody to download
329 # User name to try and run as
332 # Whether it's OK to use an IP addres from a known local/private range
335 # Unload the packages cache after an interval of inactivity this long.
336 # The packages cache uses a lot of memory, and only takes a few seconds
337 # to reload when a new request arrives.
338 UNLOAD_PACKAGES_CACHE = 5m
340 # Which DHT implementation to use.
341 # It must be possile to do "from <DHT>.DHT import DHT" to get a class that
342 # implements the IDHT interface.
343 DHT = apt_dht_Khashmir
345 # Whether to only run the DHT (for providing only a bootstrap node)
346 DHT-ONLY = %(DHT-ONLY)s
349 # bootstrap nodes to contact to join the DHT
350 BOOTSTRAP = %(BOOTSTRAP)s
352 # whether this node is a bootstrap node
353 BOOTSTRAP_NODE = %(BOOTSTRAP_NODE)s
355 # Kademlia "K" constant, this should be an even number
358 # SHA1 is 160 bits long
361 # checkpoint every this many seconds
362 CHECKPOINT_INTERVAL = 5m
364 # concurrent xmlrpc calls per find node/value request!
367 # how many hosts to post to
370 # how many times in a row a node can fail to respond before it's booted from the routing table
373 # never ping a node more often than this
374 MIN_PING_INTERVAL = 15m
376 # refresh buckets that haven't been touched in this long
377 BUCKET_STALENESS = 1h
379 # time before expirer starts running
380 KEINITIAL_DELAY = 15s
382 # time between expirer runs
385 # expire entries older than this
388 # whether to spew info about the requests/responses in the protocol
393 """Remove all the files and directories below a top-level one.
396 @param top: the top-level directory to start at
400 for root, dirs, files in os.walk(top, topdown=False):
402 os.remove(os.path.join(root, name))
404 os.rmdir(os.path.join(root, name))
407 """Join together a list of directories into a path string.
409 @type dir: C{list} of C{string}
410 @param dir: the path to join together
412 @return: the joined together path
418 joined = os.path.join(joined, i)
422 """Create all the directories to make a path.
424 @type dir: C{list} of C{string}
425 @param dir: the path to create
428 if not os.path.exists(join(dir)):
429 os.makedirs(join(dir))
432 """Create an empty file.
434 @type path: C{list} of C{string}
435 @param path: the path to create
439 f = open(join(path), 'w')
442 def start(cmd, args, work_dir = None):
443 """Fork and start a background process running.
446 @param cmd: the name of the command to run
447 @type args: C{list} of C{string}
448 @param args: the argument to pass to the command
449 @type work_dir: C{string}
450 @param work_dir: the directory to change to to execute the child process in
451 (optional, defaults to the current directory)
453 @return: the PID of the forked process
457 new_cmd = [cmd] + args
458 pid = os.spawnvp(os.P_NOWAIT, new_cmd[0], new_cmd)
462 """Stop a forked background process that is running.
465 @param pid: the PID of the process to stop
467 @return: the return status code from the child
471 # First try a keyboard interrupt
472 os.kill(pid, signal.SIGINT)
475 (r_pid, r_value) = os.waitpid(pid, os.WNOHANG)
479 # Try a keyboard interrupt again, just in case
480 os.kill(pid, signal.SIGINT)
483 (r_pid, r_value) = os.waitpid(pid, os.WNOHANG)
488 os.kill(pid, signal.SIGTERM)
491 (r_pid, r_value) = os.waitpid(pid, os.WNOHANG)
495 # Finally a kill, don't return until killed
496 os.kill(pid, signal.SIGKILL)
499 (r_pid, r_value) = os.waitpid(pid, os.WNOHANG)
503 def apt_get(num_down, cmd):
504 """Start an apt-get process in the background.
506 The default argument specified to the apt-get invocation are
507 'apt-get -d -q -c <conf_file>'. Any additional arguments (including
508 the apt-get action to use) should be specified.
510 @type num_down: C{int}
511 @param num_down: the number of the downloader to use
512 @type cmd: C{list} of C{string}
513 @param cmd: the arguments to pass to the apt-get process
515 @return: the PID of the background process
519 print '*************** apt-get (' + str(num_down) + ') ' + ' '.join(cmd) + ' ****************'
520 apt_conf = join([down_dir(num_down), 'etc', 'apt', 'apt.conf'])
521 dpkg_status = join([down_dir(num_down), 'var', 'lib', 'dpkg', 'status'])
522 args = ['-d', '-c', apt_conf, '-o', 'Dir::state::status='+dpkg_status] + cmd
523 pid = start('apt-get', args)
526 def bootstrap_address(num_boot):
527 """Determine the bootstrap address to use for a node.
529 @type num_boot: C{int}
530 @param num_boot: the number of the bootstrap node
532 @return: the bootstrap address to use
536 return 'localhost:1' + str(num_boot) + '969'
538 def down_dir(num_down):
539 """Determine the working directory to use for a downloader.
541 @type num_down: C{int}
542 @param num_down: the number of the downloader
544 @return: the downloader's directory
548 return os.path.join(CWD,'downloader' + str(num_down))
550 def boot_dir(num_boot):
551 """Determine the working directory to use for a bootstrap node.
553 @type num_boot: C{int}
554 @param num_boot: the number of the bootstrap node
556 @return: the bootstrap node's directory
560 return os.path.join(CWD,'bootstrap' + str(num_boot))
562 def start_downloader(bootstrap_addresses, num_down, options = {},
563 mirror = 'ftp.us.debian.org/debian',
564 suites = 'main contrib non-free', clean = True):
565 """Initialize a new downloader process.
567 The default arguments specified to the downloader invocation are
568 the configuration directory, apt port, minport, maxport and the
570 Any additional arguments needed should be specified by L{options}.
572 @type num_down: C{int}
573 @param num_down: the number of the downloader to use
574 @type options: C{dictionary}
575 @param options: the dictionary of string formatting values for creating
576 the apt-dht configuration file (see L{apt_dht_conf_template} above).
577 (optional, defaults to only using the default arguments)
578 @type mirror: C{string}
579 @param mirror: the Debian mirror to use
580 (optional, defaults to 'ftp.us.debian.org/debian')
581 @type suites: C{string}
582 @param suites: space separated list of suites to download
583 (optional, defaults to 'main contrib non-free')
584 @type clean: C{boolean}
585 @param clean: whether to remove any previous downloader files
586 (optional, defaults to removing them)
588 @return: the PID of the downloader process
592 assert num_down < 100
594 print '************************** Starting Downloader ' + str(num_down) + ' **************************'
596 downloader_dir = down_dir(num_down)
604 # Create the directory structure needed by apt
605 makedirs([downloader_dir, 'etc', 'apt', 'apt.conf.d'])
606 makedirs([downloader_dir, 'var', 'lib', 'apt', 'lists', 'partial'])
607 makedirs([downloader_dir, 'var', 'lib', 'dpkg'])
608 makedirs([downloader_dir, 'var', 'cache', 'apt', 'archives', 'partial'])
609 touch([downloader_dir, 'var', 'lib', 'apt', 'lists', 'lock'])
610 touch([downloader_dir, 'var', 'lib', 'dpkg', 'lock'])
611 touch([downloader_dir, 'var', 'lib', 'dpkg', 'status'])
612 touch([downloader_dir, 'var', 'cache', 'apt', 'archives', 'lock'])
614 # Create apt's config files
615 f = open(join([downloader_dir, 'etc', 'apt', 'sources.list']), 'w')
616 f.write('deb http://localhost:1%02d77/%s/ stable %s\n' % (num_down, mirror, suites))
619 f = open(join([downloader_dir, 'etc', 'apt', 'apt.conf']), 'w')
620 f.write('Dir "' + downloader_dir + '"')
621 f.write(apt_conf_template)
624 defaults = {'PORT': '1%02d77' % num_down,
625 'CACHE_DIR': downloader_dir,
627 'BOOTSTRAP': bootstrap_addresses,
628 'BOOTSTRAP_NODE': 'no'}
631 defaults[k] = options[k]
632 f = open(join([downloader_dir, 'apt-dht.conf']), 'w')
633 f.write(apt_dht_conf_template % defaults)
636 pid = start('python', [join([sys.path[0], 'apt-dht.py']),
637 '--config-file=' + join([downloader_dir, 'apt-dht.conf']),
638 '--log-file=' + join([downloader_dir, 'apt-dht.log']),],
642 def start_bootstrap(bootstrap_addresses, num_boot, options = [], clean = True):
643 """Initialize a new bootstrap node process.
645 The default arguments specified to the apt-dht invocation are
646 the state file and port to use. Any additional arguments needed
647 should be specified by L{options}.
649 @type num_boot: C{int}
650 @param num_boot: the number of the bootstrap node to use
651 @type options: C{list} of C{string}
652 @param options: the arguments to pass to the bootstrap node
653 (optional, defaults to only using the default arguments)
654 @type clean: C{boolean}
655 @param clean: whether to remove any previous bootstrap node files
656 (optional, defaults to removing them)
658 @return: the PID of the downloader process
664 print '************************** Starting Bootstrap ' + str(num_boot) + ' **************************'
666 bootstrap_dir = boot_dir(num_boot)
674 makedirs([bootstrap_dir])
676 defaults = {'PORT': '1%d969' % num_boot,
677 'CACHE_DIR': bootstrap_dir,
679 'BOOTSTRAP': bootstrap_addresses,
680 'BOOTSTRAP_NODE': 'yes'}
683 defaults[k] = options[k]
684 f = open(join([bootstrap_dir, 'apt-dht.conf']), 'w')
685 f.write(apt_dht_conf_template % defaults)
688 pid = start('python', [join([sys.path[0], 'apt-dht.py']),
689 '--config-file=' + join([bootstrap_dir, 'apt-dht.conf']),
690 '--log-file=' + join([bootstrap_dir, 'apt-dht.log']),],
695 def run_test(bootstraps, downloaders, apt_get_queue):
696 """Run a single test.
698 @type bootstraps: C{dictionary} of {C{int}: C{list} of C{string}}
699 @param bootstraps: the bootstrap nodes to start, keys are the bootstrap numbers and
700 values are the list of options to invoke the bootstrap node with
701 @type downloaders: C{dictionary} of {C{int}: (C{int}, C{list} of C{string})}
702 @param downloaders: the downloaders to start, keys are the downloader numbers and
703 values are the list of options to invoke the downloader with
704 @type apt_get_queue: C{list} of (C{int}, C{list} of C{string})
705 @param apt_get_queue: the apt-get downloader to use and commands to execute
706 @rtype: C{list} of (C{float}, C{int})
707 @return: the execution time and returned status code for each element of apt_get_queue
711 running_bootstraps = {}
712 running_downloaders = {}
717 boot_keys = bootstraps.keys()
719 bootstrap_addresses = bootstrap_address(boot_keys[0])
720 for i in xrange(1, len(boot_keys)):
721 bootstrap_addresses += '\n ' + bootstrap_address(boot_keys[i])
723 for k, v in bootstraps.items():
724 running_bootstraps[k] = start_bootstrap(bootstrap_addresses, k, v)
728 for k, v in downloaders.items():
729 running_downloaders[k] = start_downloader(bootstrap_addresses, k, v)
733 for (num_down, cmd) in apt_get_queue:
734 running_apt_get[num_down] = apt_get(num_down, cmd)
736 (pid, r_value) = os.waitpid(running_apt_get[num_down], 0)
737 elapsed = time() - start_time
738 del running_apt_get[num_down]
739 r_value = r_value / 256
740 apt_get_results.append((elapsed, r_value))
743 print '********** apt-get completed successfully in ' + str(elapsed) + ' sec. *****************'
745 print '********** apt-get finished with status ' + str(r_value) + ' in ' + str(elapsed) + ' sec. ************'
750 print '************************** Exception occurred **************************'
752 print '************************** will attempt to shut down *******************'
754 print '*********************** shutting down the apt-gets *******************'
755 for k, v in running_apt_get.items():
757 print 'apt-get', k, stop(v)
759 print '************************** Exception occurred **************************'
764 print '*********************** shutting down the downloaders *******************'
765 for k, v in running_downloaders.items():
767 print 'downloader', k, stop(v)
769 print '************************** Exception occurred **************************'
774 print '************************** shutting down the bootstraps *******************'
775 for k, v in running_bootstraps.items():
777 print 'bootstrap', k, stop(v)
779 print '************************** Exception occurred **************************'
782 print '************************** Test Results *******************'
784 for (num_down, cmd) in apt_get_queue:
786 s = str(num_down) + ': "apt-get ' + ' '.join(cmd) + '" '
787 if len(apt_get_results) > i:
788 (elapsed, r_value) = apt_get_results[i]
789 s += 'took ' + str(elapsed) + ' secs (' + str(r_value) + ')'
791 s += 'did not complete'
794 return apt_get_results
797 """Get the usage information to display to the user.
800 @return: the usage information to display
804 s = 'Usage: ' + sys.argv[0] + ' (all|<test>|help)\n\n'
805 s += ' all - run all the tests\n'
806 s += ' help - display this usage information\n'
807 s += ' <test> - run the <test> test (see list below for valid tests)\n\n'
812 s += 'test "' + str(k) + '" - ' + v[0] + '\n'
816 if __name__ == '__main__':
817 if len(sys.argv) != 2:
819 elif sys.argv[1] == 'all':
820 for k, v in tests.items():
821 run_test(v[1], v[2], v[3])
822 elif sys.argv[1] in tests:
823 v = tests[sys.argv[1]]
824 run_test(v[1], v[2], v[3])
825 elif sys.argv[1] == 'help':
828 print 'Unknown test to run:', sys.argv[1], '\n'