/usr/share/pyshared/ZEO/scripts/zeopack.test is in python-zodb 1:3.10.5-0ubuntu3.
This file is owned by root:root, with mode 0o644.
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=======
The zeopack script can be used to pack one or more storages. It uses
ClientStorage to do this. To test it's behavior, we'll replace the
normal ClientStorage with a fake one that echos information we'll want
for our test:
>>> class ClientStorage:
... connect_wait = 0
... def __init__(self, *args, **kw):
... if args[0] == 'bad':
... import logging
... logging.getLogger('test.ClientStorage').error(
... "I hate this address, %r", args[0])
... raise ValueError("Bad address")
... print "ClientStorage(%s %s)" % (
... repr(args)[1:-1],
... ', '.join("%s=%r" % i for i in sorted(kw.items())),
... )
... def pack(self, t=None, *args, **kw):
... now = time.localtime(time.time())
... local_midnight = time.mktime(now[:3]+(0, 0, 0)+now[6:])
... t -= local_midnight # adjust for tz
... t += 86400*7 # add a week to make sure we're positive
... print "pack(%r,%s %s)" % (
... t, repr(args)[1:-1],
... ', '.join("%s=%r" % i for i in sorted(kw.items())),
... )
... def is_connected(self):
... self.connect_wait -= 1
... print 'is_connected', self.connect_wait < 0
... return self.connect_wait < 0
... def close(self):
... print "close()"
>>> import ZEO
>>> ClientStorage_orig = ZEO.ClientStorage.ClientStorage
>>> ZEO.ClientStorage.ClientStorage = ClientStorage
Now, we're ready to try the script:
>>> from ZEO.scripts.zeopack import main
If we call it with no arguments, we get help:
>>> import os; os.environ['COLUMNS'] = '80' # for consistent optparse output
>>> main([], 'zeopack')
Usage: zeopack [options] [servers]
<BLANKLINE>
Pack one or more storages hosted by ZEO servers.
<BLANKLINE>
The positional arguments specify 0 or more tcp servers to pack, where
each is of the form:
<BLANKLINE>
host:port[:name]
<BLANKLINE>
<BLANKLINE>
<BLANKLINE>
Options:
-d DAYS, --days=DAYS Pack objects that are older than this number of days
-t TIME, --time=TIME Time of day to pack to of the form: HH[:MM[:SS]].
Defaults to current time.
-u UNIX_SOCKETS, --unix=UNIX_SOCKETS
A unix-domain-socket server to connect to, of the
form: path[:name]
-h HOST Deprecated: Used with the -p and -S options, specified
the host to connect to.
-p PORT Deprecated: Used with the -h and -S options, specifies
the port to connect to.
-S NAME Deprecated: Used with the -h and -p, options, or with
the -U option specified the storage name to use.
Defaults to 1.
-U UNIX Deprecated: Used with the -S option, Unix-domain
socket to connect to.
Since packing involves time, we'd better have our way with it. Replace
time.time() with a function that always returns the same value. The
value is timezone dependent.
>>> import time
>>> time_orig = time.time
>>> time.time = lambda : time.mktime((2009, 3, 24, 10, 55, 17, 1, 83, -1))
>>> sleep_orig = time.sleep
>>> def sleep(t):
... print 'sleep(%r)' % t
>>> time.sleep = sleep
Normally, we pass one or more TCP server specifications:
>>> main(["host1:8100", "host1:8100:2"])
ClientStorage(('host1', 8100), read_only=1, storage='1', wait=False)
is_connected True
pack(644117.0, wait=True)
close()
ClientStorage(('host1', 8100), read_only=1, storage='2', wait=False)
is_connected True
pack(644117.0, wait=True)
close()
We can also pass unix-domain-sockey servers using the -u option:
>>> main(["-ufoo", "-ubar:spam", "host1:8100", "host1:8100:2"])
ClientStorage(('host1', 8100), read_only=1, storage='1', wait=False)
is_connected True
pack(644117.0, wait=True)
close()
ClientStorage(('host1', 8100), read_only=1, storage='2', wait=False)
is_connected True
pack(644117.0, wait=True)
close()
ClientStorage('foo', read_only=1, storage='1', wait=False)
is_connected True
pack(644117.0, wait=True)
close()
ClientStorage('bar', read_only=1, storage='spam', wait=False)
is_connected True
pack(644117.0, wait=True)
close()
The -d option causes a pack time the given number of days earlier to
be used:
>>> main(["-ufoo", "-ubar:spam", "-d3", "host1:8100", "host1:8100:2"])
ClientStorage(('host1', 8100), read_only=1, storage='1', wait=False)
is_connected True
pack(384917.0, wait=True)
close()
ClientStorage(('host1', 8100), read_only=1, storage='2', wait=False)
is_connected True
pack(384917.0, wait=True)
close()
ClientStorage('foo', read_only=1, storage='1', wait=False)
is_connected True
pack(384917.0, wait=True)
close()
ClientStorage('bar', read_only=1, storage='spam', wait=False)
is_connected True
pack(384917.0, wait=True)
close()
The -t option allows us to control the time of day:
>>> main(["-ufoo", "-d3", "-t1:30", "host1:8100:2"])
ClientStorage(('host1', 8100), read_only=1, storage='2', wait=False)
is_connected True
pack(351000.0, wait=True)
close()
ClientStorage('foo', read_only=1, storage='1', wait=False)
is_connected True
pack(351000.0, wait=True)
close()
Connection timeout
------------------
The zeopack script tells ClientStorage not to wait for connections
before returning from the constructor, but will time out after 60
seconds of waiting for a connect.
>>> ClientStorage.connect_wait = 3
>>> main(["-d3", "-t1:30", "host1:8100:2"])
ClientStorage(('host1', 8100), read_only=1, storage='2', wait=False)
is_connected False
sleep(1)
is_connected False
sleep(1)
is_connected False
sleep(1)
is_connected True
pack(351000.0, wait=True)
close()
>>> def call_main(args):
... import sys
... old_stderr = sys.stderr
... sys.stderr = sys.stdout
... try:
... try:
... main(args)
... except SystemExit, v:
... print "Exited", v
... finally:
... sys.stderr = old_stderr
>>> ClientStorage.connect_wait = 999
>>> call_main(["-d3", "-t1:30", "host1:8100", "host1:8100:2"])
... # doctest: +ELLIPSIS
ClientStorage(('host1', 8100), read_only=1, storage='1', wait=False)
is_connected False
sleep(1)
...
is_connected False
sleep(1)
Couldn't connect to: (('host1', 8100), '1')
close()
ClientStorage(('host1', 8100), read_only=1, storage='2', wait=False)
is_connected False
sleep(1)
...
is_connected False
sleep(1)
Couldn't connect to: (('host1', 8100), '2')
close()
>>> ClientStorage.connect_wait = 0
Legacy support
--------------
>>> main(["-d3", "-h", "host1", "-p", "8100", "-S", "2"])
ClientStorage(('host1', 8100), read_only=1, storage='2', wait=False)
is_connected True
pack(384917.0, wait=True)
close()
>>> import socket
>>> old_gethostname = socket.gethostname
>>> socket.gethostname = lambda : 'test.host.com'
>>> main(["-d3", "-p", "8100"])
ClientStorage(('test.host.com', 8100), read_only=1, storage='1', wait=False)
is_connected True
pack(384917.0, wait=True)
close()
>>> socket.gethostname = old_gethostname
>>> main(["-d3", "-U", "foo/bar", "-S", "2"])
ClientStorage('foo/bar', read_only=1, storage='2', wait=False)
is_connected True
pack(384917.0, wait=True)
close()
Error handling
--------------
>>> call_main(["-d3"])
Error:
No servers specified.
Exited 1
>>> call_main(["-d3", "a"])
Error:
Invalid server specification: 'a'
Exited 1
>>> call_main(["-d3", "a:b:c:d"])
Error:
Invalid server specification: 'a:b:c:d'
Exited 1
>>> call_main(["-d3", "a:b:2"])
Error:
Invalid port in server specification: 'a:b:2'
Exited 1
>>> call_main(["-d3", "-u", "a:b:2"])
Error:
Invalid server specification: 'a:b:2'
Exited 1
>>> call_main(["-d3", "-u", "bad"]) # doctest: +ELLIPSIS
test.ClientStorage ERROR I hate this address, 'bad'
Traceback (most recent call last):
...
ValueError: Bad address
Error:
Error packing storage 1 in 'bad'
Exited 1
Note that in the previous example, the first line was output through logging.
.. tear down
>>> ZEO.ClientStorage.ClientStorage = ClientStorage_orig
>>> time.time = time_orig
>>> time.sleep = sleep_orig
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