[Zope-Checkins] SVN: Zope/trunk/lib/python/Zope.py Put warning on a single line.
Log message for revision 37481: Put warning on a single line. Changed: U Zope/trunk/lib/python/Zope.py -=- Modified: Zope/trunk/lib/python/Zope.py === --- Zope/trunk/lib/python/Zope.py 2005-07-27 13:38:39 UTC (rev 37480) +++ Zope/trunk/lib/python/Zope.py 2005-07-27 13:56:04 UTC (rev 37481) @@ -20,8 +20,7 @@ sys.modules['Zope'] = Zope2 import warnings -warnings.warn(The Zope package has been renamed to Zope2.\n - Import of a package named 'Zope' is deprecated\n - and will be disabled starting in Zope 2.11.\n - , +warnings.warn(The Zope package has been renamed to Zope2. + Import of a package named 'Zope' is deprecated + and will be disabled starting in Zope 2.11., DeprecationWarning, stacklevel=2) ___ Zope-Checkins maillist - Zope-Checkins@zope.org http://mail.zope.org/mailman/listinfo/zope-checkins
[Zope-Checkins] SVN: Zope/branches/Zope-2_8-branch/lib/python/Zope.py Put warning on a single line.
Log message for revision 37482: Put warning on a single line. Changed: U Zope/branches/Zope-2_8-branch/lib/python/Zope.py -=- Modified: Zope/branches/Zope-2_8-branch/lib/python/Zope.py === --- Zope/branches/Zope-2_8-branch/lib/python/Zope.py2005-07-27 13:56:04 UTC (rev 37481) +++ Zope/branches/Zope-2_8-branch/lib/python/Zope.py2005-07-27 13:58:22 UTC (rev 37482) @@ -20,8 +20,7 @@ sys.modules['Zope'] = Zope2 import warnings -warnings.warn(The Zope package has been renamed to Zope2.\n - Import of a package named 'Zope' is deprecated\n - and will be disabled starting in Zope 2.11.\n - , +warnings.warn(The Zope package has been renamed to Zope2. + Import of a package named 'Zope' is deprecated + and will be disabled starting in Zope 2.11., DeprecationWarning, stacklevel=2) ___ Zope-Checkins maillist - Zope-Checkins@zope.org http://mail.zope.org/mailman/listinfo/zope-checkins
[Zope] product organization
As usual, my question is rather simple :) I'd like to know what are the best practices for product organization - for example I have _tons_ of queries to sqlserver, and my main class is becoming less manageble every time I look at it :/ I like the way SQL integrates in Zope, what I don't like is having a giant __init__ and a lot of _sqlSomething at the end of the class. Can I associate queries to something else than a _variable ? Something like a dictionary or a class ? Can I move SQL calls outside the initializer ? I'd prefer to have a class for data access andanother one to glue all the parts together, maybe I'm plain wrong but I think that my product would bea lot cleaner. What are the best practices for FS based products ? Yahoo! Mail: gratis 1GB per i messaggi, antispam, antivirus, POP3___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] product organization
Nicholas Wieland wrote:
As usual, my question is rather simple :)
I'd like to know what are the best practices for product organization -
for example I have _tons_ of queries to sqlserver, and my main class is
becoming less manageble every time I look at it :/
I like the way SQL integrates in Zope, what I don't like is having a
giant __init__ and a lot of _sqlSomething at the end of the class.
Can I associate queries to something else than a _variable ? Something
like a dictionary or a class ? Can I move SQL calls outside the
initializer ? I'd prefer to have a class for data access and another one
to glue all the parts together, maybe I'm plain wrong but I think that
my product would be a lot cleaner.
What are the best practices for FS based products ?
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I can't talk for best practise. You can put your queries also outside of
the init, in this way:
class YourProduct:
_my_query = SQL('doMyQuery', '',
'your_connection', '', 'select * from data')
def __init__(self):
pass
Also, if you have a *LOT* of queries, consider in building your query on
the fly.
Regards
Marco
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[Zope] unwise.exe missing on linux
Hi Does anyone know if the zope uninstall program 'unwise.exe' can be got separately? I have installed zope on linux but the unwise.exe program isn't within the package. Thanks Michael ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] ZPsycopg - Losing Connections
Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) Hi I am experiencing a new problem, that was not present in the past on the above server. From the Zope error log: Exception Type OperationalError Exception ValuePQsendQuery() -- There is no connection to the backend. Traceback (innermost last): Module ZPublisher.Publish, line 92, in publish Module ZPublisher.BaseRequest, line 433, in traverse Module Products.exUserFolder.exUserFolder, line 869, in validate Module Products.exUserFolder.exUserFolder, line 1133, in listOneUser Module Products.exUserFolder.pgAuthSource.pgAuthSource, line 244, in listOneUser Module Shared.DC.ZRDB.DA, line 454, in __call__ SQL instance at 922dd70 Module Products.ZPsycopgDA.db, line 228, in query OperationalError: PQsendQuery() -- There is no connection to the backend. When I check in psql, I can see a connection still being there. Using the query: SELECT count(pg_stat_activity.datname) AS count, pg_stat_activity.datname FROM pg_stat_activity GROUP BY pg_stat_activity.datname; (Is this really showing active connections? Or just recent usage?) If I use the close connection and then open connection buttons in the Z Psycopg Database Connection in Zope, I get the connection usually back. Sometimes I have to re-submit the properties to make it work, though. Properties settings are: Connect immediately is checked Use Zope's internal DateTime module (instead of mxDateTime) is checked Transaction isolation level: Serializable Backend encoding: UTF-8 Output Unicode strings is not checked This is fast becoming a real headache for us! What has changed? We have recently increased the max_connections and shared_buffers for PostgreSQL and now run more Zope instances with now averaging about 40 connections from the database (using the query above). So this is an increase. Any help on how I can find out what's going on here is very welcome! (or in short: HELP, PLEASE!) Cheers ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] unwise.exe missing on linux
On 7/27/05, michael nt milne [EMAIL PROTECTED] wrote: Does anyone know if the zope uninstall program 'unwise.exe' can be got separately? I have installed zope on linux but the unwise.exe program isn't within the package. That's because unwise.exe is only needed if you used wise to install it. Which you only can if you are on windows. On Unix you uninstall Zope by deleting the directory. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] product organization
Well, not exactly - just a way to separate access to data from everything else in the product. Maybe a separate class that needs the connection asargument and that just returns the data I need in appropriate data structures by calling class methods. class DataModel (object): def __init__ (self, conn): self.conn = conn self.sqlFetchSomething = SQL (.) def fetchSomething (self): return self.sqlFetchSomething This is really simple, but I think it gives the idea. Obviously I'd like to perform various operation at the data level, for example return a list of lists for reportlab tables and so on. TIA, ngw Yahoo! Mail: gratis 1GB per i messaggi, antispam, antivirus, POP3___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Running more than one instance on windows often block each other
I will try to recreate the problem on other
flavours of windows asap. I will get back to you
later.
I guess my reporting was a bit too quick, sorry:
I'm running python 2.3.5, (installed from windows binary).
Zope 2.7.7 (not necessary for the test scripts)
Windows XP Home SP2 (blush - my laptop came with that... ;) )
Sune
Tim Peters wrote:
[Sune Brøndum Wøller]
Thanks for the pointer. I have been debugging
select_trigger.py, and has some more info:
The problem is that the call a.accept() sometimes hangs.
Apparently a.bind(self.address) allows us to bind to
a port that another zope instance already is bound to.
The code creates the server socket a, and the client socket w,
and gets the client socket r by connecting w to a. Then it closes a.
a goes out of scope when __init__ terminates, and is probably garbage
collected at some point.
Unless you're using a very old Python, `a` is collected before the
call returns (where the call means the call of the function in which
`a` is a local variable). Very old Pythons had an idiotic __del__
method attached to their Windows socket wrapper, which inhibited
timely gc.
I tried moving the code to the following standalone script, and I can reproduce
the error with that. In the original code w is kept as an instance variable, and
r is passed to asyncore.dispatcher.__init__ and probably kept there.
Yes, the socket bound to `r` also gets bound to `self.socket` by this call:
asyncore.dispatcher.__init__ (self, r)
I simulate that by returning them, then the caller of socktest can keep them
around.
I try to call socktest from different processes A and B (two pythons):
(w,r = socktest())
The call in A gets port 1. The second call, in B, either blocks, or takes
over port 1 (I see the second process taking over the port in a port
scanner.)
Sorry, I can't reproduce this -- but you didn't give a test program,
just an isolated function, and I'm not sure what you did with it. I
called that function in an infinite loop, appending the return value
to a global list, with a short ( 0.1 second) sleep between
iterations, and closed the returned sockets fifty iterations after
they were created. Ran that loop in two processes. No hangs, or any
other oddities, for some minutes. It did _eventually_ hang-- and both
processes at the same time --with netstat showing more than 4000
sockets hanging around in TIME_WAIT state then. I assume I bashed
into some internal Windows socket resource limit there, which Windows
didn't handle gracefully. Attaching to the processes under the MSVC 6
debugger, they were hung inside the MS socket libraries. Repeated
this several times (everything appeared to work fine until 4000
sockets were sitting in TIME_WAIT, and then both processes hung at
approximately the same time).
Concretely:
sofar = []
try:
while 1:
print '.',
stuff = socktest() # calling your function
sofar.append(stuff)
time.sleep(random.random()/10)
if len(sofar) == 50:
tup = sofar.pop(0)
w, r = tup
msg = str(random.randrange(100))
w.send(msg)
msg2 = r.recv(100)
assert msg == msg2, (msg, msg2)
for s in tup:
s.close()
except KeyboardInterrupt:
for tup in sofar:
for s in tup:
s.close()
Note that there's also a bit of code there to verify that the
connected sockets can communicate correctly; the `assert` never
triggered.
You haven't said which versions of Windows or Python you're using. I
was using XP Pro SP2 and Python 2.3.5. Don't know whether either
matters.
It was certainly the case when I ran it that your
print port
statement needed to display ports less than 1 at times, meaning that the
a.bind((host, port))
did raise an exception at times. It never printed a port number less
than 19997 for me. Did you ever see it print a port number less than
1?
a.bind in B does not raise socket.error: (10048, 'Address already in use') as
expected, when the server socket in A is closed, even though the port is used by
the client socket r in A.
I'm not sure what that's saying, but could be it's an illusion. For example,
import socket
s = socket.socket()
s.bind(('localhost', 1))
s.listen(2)
a1 = socket.socket()
a2 = socket.socket()
a1.connect(('localhost', 1))
a2.connect(('localhost', 1))
b1 = s.accept()
b2 = s.accept()
b1[0].getsockname()
('127.0.0.1', 1)
b2[0].getsockname()
('127.0.0.1', 1)
That is, it's normal for the `r` in
r, addr = a.accept()
to repeat port numbers across multiple `accept()` calls, and indeed to
duplicate the port number from the `bind` call. This always confused
me (from way back in my Unix days -- it's not a Windows thing), and
maybe it's not what you're talking about anyway.
If I remove a.close(), and keep a around (by passing it to the caller), a.bind
works as expected - it
[Zope] Re: Running more than one instance on windows often block each other
I will try to recreate the problem on other
flavours of windows asap. I will get back to you
later.
I guess my reporting was a bit too quick, sorry:
I'm running python 2.3.5, (installed from windows binary).
Zope 2.7.7 (not necessary for the test scripts)
Windows XP Home SP2 (blush - my laptop came with that... ;) )
Sune
Tim Peters wrote:
[Sune Brøndum Wøller]
Thanks for the pointer. I have been debugging
select_trigger.py, and has some more info:
The problem is that the call a.accept() sometimes hangs.
Apparently a.bind(self.address) allows us to bind to
a port that another zope instance already is bound to.
The code creates the server socket a, and the client socket w,
and gets the client socket r by connecting w to a. Then it closes a.
a goes out of scope when __init__ terminates, and is probably garbage
collected at some point.
Unless you're using a very old Python, `a` is collected before the
call returns (where the call means the call of the function in which
`a` is a local variable). Very old Pythons had an idiotic __del__
method attached to their Windows socket wrapper, which inhibited
timely gc.
I tried moving the code to the following standalone script, and I can reproduce
the error with that. In the original code w is kept as an instance variable, and
r is passed to asyncore.dispatcher.__init__ and probably kept there.
Yes, the socket bound to `r` also gets bound to `self.socket` by this call:
asyncore.dispatcher.__init__ (self, r)
I simulate that by returning them, then the caller of socktest can keep them
around.
I try to call socktest from different processes A and B (two pythons):
(w,r = socktest())
The call in A gets port 1. The second call, in B, either blocks, or takes
over port 1 (I see the second process taking over the port in a port
scanner.)
Sorry, I can't reproduce this -- but you didn't give a test program,
just an isolated function, and I'm not sure what you did with it. I
called that function in an infinite loop, appending the return value
to a global list, with a short ( 0.1 second) sleep between
iterations, and closed the returned sockets fifty iterations after
they were created. Ran that loop in two processes. No hangs, or any
other oddities, for some minutes. It did _eventually_ hang-- and both
processes at the same time --with netstat showing more than 4000
sockets hanging around in TIME_WAIT state then. I assume I bashed
into some internal Windows socket resource limit there, which Windows
didn't handle gracefully. Attaching to the processes under the MSVC 6
debugger, they were hung inside the MS socket libraries. Repeated
this several times (everything appeared to work fine until 4000
sockets were sitting in TIME_WAIT, and then both processes hung at
approximately the same time).
Concretely:
sofar = []
try:
while 1:
print '.',
stuff = socktest() # calling your function
sofar.append(stuff)
time.sleep(random.random()/10)
if len(sofar) == 50:
tup = sofar.pop(0)
w, r = tup
msg = str(random.randrange(100))
w.send(msg)
msg2 = r.recv(100)
assert msg == msg2, (msg, msg2)
for s in tup:
s.close()
except KeyboardInterrupt:
for tup in sofar:
for s in tup:
s.close()
Note that there's also a bit of code there to verify that the
connected sockets can communicate correctly; the `assert` never
triggered.
You haven't said which versions of Windows or Python you're using. I
was using XP Pro SP2 and Python 2.3.5. Don't know whether either
matters.
It was certainly the case when I ran it that your
print port
statement needed to display ports less than 1 at times, meaning that the
a.bind((host, port))
did raise an exception at times. It never printed a port number less
than 19997 for me. Did you ever see it print a port number less than
1?
a.bind in B does not raise socket.error: (10048, 'Address already in use') as
expected, when the server socket in A is closed, even though the port is used by
the client socket r in A.
I'm not sure what that's saying, but could be it's an illusion. For example,
import socket
s = socket.socket()
s.bind(('localhost', 1))
s.listen(2)
a1 = socket.socket()
a2 = socket.socket()
a1.connect(('localhost', 1))
a2.connect(('localhost', 1))
b1 = s.accept()
b2 = s.accept()
b1[0].getsockname()
('127.0.0.1', 1)
b2[0].getsockname()
('127.0.0.1', 1)
That is, it's normal for the `r` in
r, addr = a.accept()
to repeat port numbers across multiple `accept()` calls, and indeed to
duplicate the port number from the `bind` call. This always confused
me (from way back in my Unix days -- it's not a Windows thing), and
maybe it's not what you're talking about anyway.
If I remove a.close(), and keep a around (by passing it to the caller), a.bind
works as expected - it
Re: [Zope] ZPsycopg - Losing Connections
On 7/27/05, Fernando Lujan [EMAIL PROTECTED] wrote: On 7/27/05, David [EMAIL PROTECTED] wrote: Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) The Psycopg version 1.1.19 solves this problem. :) The 1.1.19 version isn't in debian yet. $ apt-get show python-psycopg shows only 1.1.18 :( -- Fernando Lujan ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZPsycopg - Losing Connections
On 7/27/05, Peter Bengtsson [EMAIL PROTECTED] wrote: On 7/27/05, Fernando Lujan [EMAIL PROTECTED] wrote: On 7/27/05, David [EMAIL PROTECTED] wrote: Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) The Psycopg version 1.1.19 solves this problem. :) The 1.1.19 version isn't in debian yet. $ apt-get show python-psycopg shows only 1.1.18 :( So, use the source... ;) -- Fernando Lujan ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] reportlab and images
I know, I'm flooding the list ... I use images inside my reports, so I have to open PIL-image objects inside my product. Everything is fine, but I must use the full path, like /Zope-Instance/Products/foobar/image/blah.png, and this is a problem, because the product will have a different path when put in production. My solution is to have a class variable to use, like: imagepath = "/Zope-Instance/.../image" and then use that variable to build the path, but I think it's ugly. How do you solve this problem and just use 'image/blah.png' just like ZPTs, knowing that all image files will be stored in an "image" subdirectory of the product ? TIA, ngw Yahoo! Messenger: chiamate gratuite in tutto il mondo ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZPsycopg - Losing Connections
On Wednesday den 27. July 2005 14:45, Peter Bengtsson wrote: On 7/27/05, Fernando Lujan [EMAIL PROTECTED] wrote: On 7/27/05, David [EMAIL PROTECTED] wrote: Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) The Psycopg version 1.1.19 solves this problem. :) The 1.1.19 version isn't in debian yet. $ apt-get show python-psycopg shows only 1.1.18 :( #wget http://ftp.de.debian.org/debian/pool/main/p/psycopg/python-psycopg_1.1.19-1_i386.deb #dpkg -i python-psycopg_1.1.19-1_i386.deb -- Med venlig hilsen Thomas Olsen http://www.headnet.dk ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Re: Running more than one instance on windows often block each other
[Sune B. Woeller] I will try to recreate the problem on other flavours of windows asap. I will get back to you later. Cool! If you can, posting a self-contained program that demonstrates the problem is the best way to make progress. I guess my reporting was a bit too quick, sorry: Not at all -- you did excellent detective work here! It's appreciated. The problem is that English descriptions are nearly always ambiguous, especially when trying to explain something complicated that other people haven't reported. Posting a program removes all that guesswork: it reproduces the problem for other people on other boxes, or it doesn't, and we learn something valuable either way; if it does fail for others, then they can help investigate _why_ it fails. At the start, thoroughly demonstrating a problem exists is more important than guessing at what might be needed to worm around it. I'm running python 2.3.5, (installed from windows binary). Zope 2.7.7 (not necessary for the test scripts) Windows XP Home SP2 (blush - my laptop came with that... ;) ) Good -- thanks. A pretty vanilla system, then. I've heard that XP Home has special limitations on network capabilities, but don't know more than that; it's at least possible they're relevant. I'm not sure that running multiple Zope instances on a laptop is a prime use case for Zope wink. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] find a file's type
is there any dtml codes that can display a file's type? I made a site that allows a person to send up a document file. But in the end what I really wanted is to let people to upload .doc files. Since I didn't put any restriction on it, people always send up a smaller .pdf file instead. So how do I encode my webpage to show the file type of the file that have already being uploaded?? Start your day with Yahoo! - make it your home page ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] find a file's type
All File objects have a content_type property. Try dtml-var _['somefile.doc'].content_type On 7/27/05, Allen Huang [EMAIL PROTECTED] wrote: is there any dtml codes that can display a file's type? I made a site that allows a person to send up a document file. But in the end what I really wanted is to let people to upload .doc files. Since I didn't put any restriction on it, people always send up a smaller .pdf file instead. So how do I encode my webpage to show the file type of the file that have already being uploaded?? Start your day with Yahoo! - make it your home page ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] use combined propertysheet variables to form a file name for a zObject
I made a propertysheet for a customed zclass and I wish to use some variables and combine them to form a name for my newed created object. Say I have variable a = 'name a' b = 'value b' c = 'string c' what do I encode in my dtml method some_add dtml-with "NewsClass.createInObjectManager(REQUEST['??'], REQUEST)" ?? into the combination of a, b, and c ? Start your day with Yahoo! - make it your home page ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] use combined propertysheet variables to form a file name fora zObject
Here's a code snippet from one of our applications (you should be able to figure out what you need from this example): dtml-with UserData dtml-with "manage_addProduct['TCAide']" dtml-with "TCAUsers.createInObjectManager(REQUEST['clientid'], REQUEST)" dtml-call "propertysheets.TCAUsersPS.manage_changeProperties(REQUEST)" dtml-call reindex_object /dtml-with /dtml-with UserData is a folder where new zclass instances are stored. TCAUsers is our zclass TCAUsersPS is the common instance propertysheet for the zclass All of the property fields/values are stored in REQUEST (as a result of a user filling in an html form) We call reindex_object because our zclasses are 'catalog aware' and we are reindexing the catalog. hth Jonathan - Original Message - From: Allen Huang To: zope@zope.org Sent: Wednesday, July 27, 2005 12:07 PM Subject: [Zope] use combined propertysheet variables to form a file name fora zObject I made a propertysheet for a customed zclass and I wish to use some variables and combine them to form a name for my newed created object. Say I have variable a = 'name a' b = 'value b' c = 'string c' what do I encode in my dtml method some_add dtml-with "NewsClass.createInObjectManager(REQUEST['??'], REQUEST)" ?? into the combination of a, b, and c ? Start your day with Yahoo! - make it your home page ___Zope maillist - Zope@zope.orghttp://mail.zope.org/mailman/listinfo/zope** No cross posts or HTML encoding! **(Related lists - http://mail.zope.org/mailman/listinfo/zope-announcehttp://mail.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] product organization
Nicholas Wieland wrote: As usual, my question is rather simple :) I'd like to know what are the best practices for product organization - for example I have _tons_ of queries to sqlserver, and my main class is becoming less manageble every time I look at it :/ I like the way SQL integrates in Zope, what I don't like is having a giant __init__ and a lot of _sqlSomething at the end of the class. Can I associate queries to something else than a _variable ? Something like a dictionary or a class ? Can I move SQL calls outside the initializer ? I'd prefer to have a class for data access and another one to glue all the parts together, maybe I'm plain wrong but I think that my product would be a lot cleaner. What are the best practices for FS based products ? If you're writing SQL queries attached to a Product and using them in said Product, you should look at ExtZSQL: http://www.zope.org/Members/jccooper/extzsql It was made for precisely this problem. --jcc -- Building Websites with Plone http://plonebook.packtpub.com/ Enfold Systems, LLC http://www.enfoldsystems.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] what the namespace means in Script(python)?
Hi list: In Script(python) binding page. there is some description about namespace binding: When the script is called from DTML, this is the caller's DTML namespace, otherwise it is an empty namespace. Recommended value: |_| (underscore character) But in zope book, when talk about Error Handling in the Advanced Page Templates chapter. It looks that it use ZPT with script's namespace. See below. For more flexible error handling you can call a script. For example: div tal:on-error=structure here/handleError ... /div Any error that occurs inside the |div| will call the |handleError| script. Note that the |structure| option allows the script to return HTML. Your error handling script can examine the error and take various actions depending on the error. Your script gets access to the error through the |error| variable in the namespace. For example: ## Script (Python) handleError ##bind namespace=_ ## error=_['error'] if error.type==ZeroDivisionError: return pCan't divide by zero./p else: return pAn error occurred./p pError type: %s/p pError value: %s/p % (error.type, error.value) So what happened with namespace when calling Script from ZPT? ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] reportlab and images
Nicholas Wieland wrote at 2005-7-27 15:47 +0200: I use images inside my reports, so I have to open PIL-image objects inside my product. Everything is fine, but I must use the full path, like /Zope-Instance/Products/foobar/image/blah.png, and this is a problem, because the product will have a different path when put in production. Maybe, you should learn about package_home. You find it in App.Common. It is used in the form package_home(globals()) and returns the directory the current module is located in (provided this module lies in a Python package or is one). -- Dieter ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] product organization
Nicholas Wieland wrote at 2005-7-27 13:54 +0200: Well, not exactly - just a way to separate access to data from everything else in the product. Maybe a separate class that needs the connection as argument and that just returns the data I need in appropriate data structures by calling class methods. class DataModel (object): def __init__ (self, conn): self.conn = conn self.sqlFetchSomething = SQL (.) I think, a class variable sqlFetchSomething would do a better job -- unless SQL depends on conn. Advantages: * fewer objects in the ZODB, fewer loads, faster operations * easier evolution of your SQL (in you need to change the SQL executed) -- Dieter ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] ZSQLMethod conditional insert
Hi This is probably an FAQ but I haven't been able to find and answer. I need a counter for a certain CMFType and want to store the hits in a MySQL database not to fill up the ZODB. I've checked to two suggestions below but they both use two ZSQLMethods first to check if the URL is already in the table, then to do the actual update or insert. http://www.zope.org/Members/element/Simple_SQL_Page_Counter http://zopelabs.com/cookbook/991116439 I'd like to be able to do that just in one ZSQLMethod for efficiency but I cant seem to figure out a way of doing it. The table is very simple: CREATE TABLE mostread ( path varchar(255) NOT NULL default '', num bigint(20) NOT NULL default '0', dt datetime NOT NULL default '-00-00 00:00:00', PRIMARY KEY (path) ) For now my ZSQLMethod get the argument path which is a relative URL and it looks like this: select @lastval:=num from mostread where dtml-sqltest path type=string dtml-var sql_delimiter update mostread set [EMAIL PROTECTED], dt=now() where dtml-sqltest path type=string; /dtml-if But that naturally only works if there is already a record containing path. What I want to do is something like this (pseudo-code): select @lastval:=num from mostread where dtml-sqltest path type=string dtml-var sql_delimiter dtml-if sequence-length 0 update mostread set [EMAIL PROTECTED], dt=now() where dtml-sqltest path type=string; dtml-else insert into mostread(path, num, dt) values(dtml-sqlvar path type=string, 1, now()) /dtml-if Is there a way of doing this or should I just create that extra ZSQLMethod? -- Med venlig hilsen Thomas Olsen http://www.headnet.dk ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Running more than one instance on windows often block each other
[Tim Peters]
...
Ran that loop in two processes. No hangs, or any
other oddities, for some minutes. It did _eventually_ hang-- and both
processes at the same time --with netstat showing more than 4000
sockets hanging around in TIME_WAIT state then. I assume I bashed
into some internal Windows socket resource limit there, which Windows
didn't handle gracefully. Attaching to the processes under the MSVC 6
debugger, they were hung inside the MS socket libraries. Repeated
this several times (everything appeared to work fine until 4000
sockets were sitting in TIME_WAIT, and then both processes hung at
approximately the same time).
More info on that: since WinXP Pro supplies only about 4000 ephemeral
ports by default, and the program kept hanging after about 4000
ephemeral ports were in use (albeit most in their 4-minute TIME_WAIT
shutdown state), I tried boosting the # of ephemeral ports:
http://support.microsoft.com/kb/q196271
After that, I never saw the processes hang again. BUT, I saw
something worse: after about 20 minutes, both processes died with
assert errors, in the code I added to verify that the sockets were
communicating correctly. The random string created in process A was
actually read by a socket in process B (instead of by its pair in
process A), and vice versa: the random string created in process B
was read in process A, and at approximately the same time process B
was reading process A's string.
I tried it again, and got a pair of similar assert failures after
about 15 minutes.
That's dreadful, and I don't see how it could be anything except a
race bug in the Windows socket implementation.
The same program on Linux doesn't run long enough to say anything
interesting -- it raises BindError, 'Cannot bind trigger!' very
quickly every time, because it apparently keeps server port numbers
(1, 19998, ,,,) reserved for a long time after the server socket
is closed (where a long time just means longer than the few seconds
it takes for the program to die on Linux).
All of the above is wrt using socktest1() below.
socktest2() below contains the Windows code I already changed ZODB 3.4
to use. I've been running socktest2() in two processes that way on
Windows for more than 2 hours now, with no glitches. The same code is
running fine on a Linux box too.
So best guess now is that there is a subtle, rare error in the Windows
socket code that could cause the Medusa/ZODB3.2 Windows trigger code
to screw up.
Complete code:
import socket, errno
import time, random
class BindError(Exception):
pass
def socktest1():
blabla
address = ('127.9.9.9', 1)
a = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
w = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
# set TCP_NODELAY to true to avoid buffering
w.setsockopt(socket.IPPROTO_TCP, 1, 1)
# tricky: get a pair of connected sockets
host='127.0.0.1'
port=1
while 1:
if port 1:
print port
try:
a.bind((host, port))
break
except:
if port = 19950:
raise BindError, 'Cannot bind trigger!'
port -= 1
a.listen (1)
w.setblocking (0)
try:
w.connect ((host, port))
except:
pass
r, addr = a.accept()
a.close()
w.setblocking (1)
#return (a, w, r)
return (r, w)
#return w
def socktest2():
a = socket.socket()
w = socket.socket()
# set TCP_NODELAY to true to avoid buffering
w.setsockopt(socket.IPPROTO_TCP, 1, 1)
# Specifying port 0 tells Windows to pick a port for us.
a.bind((127.0.0.1, 0))
connect_address = a.getsockname() # assigned (host, port) pair
a.listen(1)
w.connect(connect_address)
r, addr = a.accept() # r becomes asyncore's (self.)socket
a.close()
#return (a, w, r)
return (r, w)
#return w
sofar = []
try:
while 1:
print '.',
stuff = socktest1()
sofar.append(stuff)
time.sleep(random.random()/10)
if len(sofar) == 50:
tup = sofar.pop(0)
r, w = tup
msg = str(random.randrange(100))
w.send(msg)
msg2 = r.recv(100)
assert msg == msg2, (msg, msg2)
for s in tup:
s.close()
except KeyboardInterrupt:
for tup in sofar:
for s in tup:
s.close()
___
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[Zope] Plone doesn't show up in the Zope Interface - ./runzope issue
Hello This is my first experience of unix installs from source and I need a small amount of help to finish off my installation. I've installed Zope and Python from source, remotely, onto a RedHat box and am able to access the browser based ZMI admin screen remotely. I've followed the following instructions for getting Plone up and running but on stopping and starting the zope instance, Plone isn't available. I've tried stopping the service using the ZMI and restarting using telnet. 1. Download Plone 2 from http://www.plone.org/download, and select the tarball file. 2. Unzip the archive using the following: tar xzf CMFPlone2.0.tar.gz 3. You'll find that a directory has been created called CMFPlone-xxx, where xxx is the version (for example, CMFPlone-2.0). 4. Move the contents of that directory into your Zope installation's Product directory. For example, if the Zope Products directory is in /var/zope, then do this: mv CMFPlone2.0/ /var/zope/Products* The zope products directory is /home/zopeinstance/Products/ which lists Plone-2.0.5 I also have an issue where running /home/zopeinstance/bin/runzope using ./runzope as the zopeinstance user starts the service but the Unix prompt just hangs and doesn't do anything. I am able to get the browser management screen but on exiting the telnet session the service stops. Would anyone have any ideas at all? By the way ./start_zope and ./stop_zope from the core /zopeinstance directory don't seem to work. Thanks for any help Michael ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Does Plone need the Zope CMF?
Hi This isn't clear to me. I've installed Zope and Python from source but do I need to also install the Zope CMF for Plone to run properly? This isn't mentioned specifically any where if so. It would good to have some of these components wrapped up etc for easier install. I couldn't find the RPM's on the site. Michael ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Does Plone need the Zope CMF?
Yes, it does (heavily). See http://plone.org/documentation/how-to/setup-from-source - C On Wed, 2005-07-27 at 20:57 +0100, michael nt milne wrote: Hi This isn't clear to me. I've installed Zope and Python from source but do I need to also install the Zope CMF for Plone to run properly? This isn't mentioned specifically any where if so. It would good to have some of these components wrapped up etc for easier install. I couldn't find the RPM's on the site. Michael ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Does Plone need the Zope CMF?
--On 27. Juli 2005 20:57:23 +0100 michael nt milne [EMAIL PROTECTED] wrote: Hi This isn't clear to me. I've installed Zope and Python from source but do I need to also install the Zope CMF for Plone to run properly? This isn't mentioned specifically any where if so. CMF is mandatory is likely documented somewhere as requirement. -aj pgpq5uAiRda9o.pgp Description: PGP signature ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Zope Foundation Update
Hi! Andrew Milton wrote: You took someone else's work and claimed it as your own. This is the worst crime you can commit in the Open Source world. I think it's not really a discussion about Open Source here as it should make no difference to the Zope community whether ZC or ZEA is holding the TM. Both don't represent it and both possibly could do harm to it if they just wanted to (which they don't want as I see it). I think it's more a story about a company which some time ago made their software open source. The result of that was a big win for the Zope project as it attracted a lot of developers and, as a result, created a lot of additional projects like Silva, Plone, CPS etc. So now we have quite a big community advocating the use of Zope and now also doing the main development of the software itself (in form of Zope3). I am part of that community and I am proud of that :-) So from Zope having it's roots in that company these problems arise IMHO. So having said that I am a bit disappointed by the recent discussions here as it's maybe the sign of some unresolved problems between certain important players in the Zope world. Some points: - How the thread was started by ZC was IMHO not really good style. For me it sounded like very hard words and threatening with not doing the foundation did not sound too good and not really a good thing for the community. I also still don't understand what the foundation has to do with the actual TM discussion - wasn't it just the logo about which was being discussed? So what would have happened in the case if not ZEA did register it but any evil guy? To hold the creation of the Foundation should not have been the answer in any case! - if ZEA has registered the TM without telling ZC this is of course not ok. I understand if you don't discuss it loudly so that other parties hurry to register it but it could have been solved easily back then with a silent negotiation between the two parties. (too bad ZC did not simply register everything themselves so we would have one discussion less) - in general: Bashing each other will not help Zope and not the community. And a damaged community cannot help ZC or ZEA or any other player in the Zope world. So it should be in everyones interest to keep things going in a good mood. So that much about the form now more about my worries about the TM itself. Legally of course ZC is the right owner of the TMs as they created Zope. But OTOH it would feel more right if the TM would be transferred to the Zope Foundation. ZC once opensourced their project and the main work in terms of coding and marketing seems to be done by the community now and less and less by ZC (at least it seems to me that way). And for me Zope also feels like an open source project through and through and not something belonging to some single company. From what I see that's also the way most of the rest of the world thinks about it, especially in Europe. Thus for me it would just feel better if also the TM would be given to the community in form of the foundation (as the community is no real legal person the foundation might be the next possible thing). I also read about the irrevocable license given to the Zope Foundation and it might make no difference legally for the TM whether ZC or the ZF owns it. But as said before, I am no legal expert and thus I don't know about all the impacts and thus I am worried. So also because of this it would feel better for me if the TM would be owned by the ZF as there are just more checksbalances between their members than there will be with a single player. And hopefully I would at least trust one of them ;-) But maybe somebody can answer me some questions about it anyway: 1. What does the license mean. Does it mean that ZF will also have the right to decide who is allowed what to do with the TM, and even restrict ZC? 2. If ZC might get evil (I don't assume that, btw :-): What might happen with sites like zopelabs or any other site/institution having Zope in it's name. Can they tell them to remove that name? 3. What will happen in this worst case if ZC (or more exactly evil ZC) will suddenly start doing a Java CMS under the name Zope? Can the ZF prevent this? So basically it's not quite clear to me if the license just means that ZF is allowed to use the name or if they also can really protect it. There might always be the possibility to rename the whole project but why should I advocate Zope now if this investment might be lost someday? So because of this discussion I am a bit worried. It might be called irrational fears but I might not be the only one and as many in the community are not fluent in legal things this stuff should be thought about very carefully in order to keep the environment intact as this is what Zope makes alive. (OTOH the community seems not really taking part in that discussion so maybe it's just me who is a bit worried ;-) Finally I would
Re: [Zope] ZSQLMethod conditional insert
Hi Thomas. I would say postgres is better for this sort of thing. In postgres, you can write a function in plpgsql or other function language (there is also a python function language) that you install in postgres. In any case once you write it and then call it - it is executed in a single transaction. You are only left with selecting the function in your zsql from your script. It is hard to comment on the method you have sketched out not knowing what arguments you are passing into the method. You have identified path but I see others that you haven't discussed so don't really know where you plan on getting them from. Regards, David On Wednesday, July 27, 2005, at 03:22 PM, Thomas Olsen wrote: Hi This is probably an FAQ but I haven't been able to find and answer. I need a counter for a certain CMFType and want to store the hits in a MySQL database not to fill up the ZODB. I've checked to two suggestions below but they both use two ZSQLMethods first to check if the URL is already in the table, then to do the actual update or insert. http://www.zope.org/Members/element/Simple_SQL_Page_Counter http://zopelabs.com/cookbook/991116439 I'd like to be able to do that just in one ZSQLMethod for efficiency but I cant seem to figure out a way of doing it. The table is very simple: CREATE TABLE mostread ( path varchar(255) NOT NULL default '', num bigint(20) NOT NULL default '0', dt datetime NOT NULL default '-00-00 00:00:00', PRIMARY KEY (path) ) For now my ZSQLMethod get the argument path which is a relative URL and it looks like this: select @lastval:=num from mostread where dtml-sqltest path type=string dtml-var sql_delimiter update mostread set [EMAIL PROTECTED], dt=now() where dtml-sqltest path type=string; /dtml-if But that naturally only works if there is already a record containing path. What I want to do is something like this (pseudo-code): select @lastval:=num from mostread where dtml-sqltest path type=string dtml-var sql_delimiter dtml-if sequence-length 0 update mostread set [EMAIL PROTECTED], dt=now() where dtml-sqltest path type=string; dtml-else insert into mostread(path, num, dt) values(dtml-sqlvar path type=string, 1, now()) /dtml-if Is there a way of doing this or should I just create that extra ZSQLMethod? -- Med venlig hilsen Thomas Olsen http://www.headnet.dk ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZSQLMethod conditional insert
Hi David On Wednesday den 27. July 2005 23:50, David Pratt wrote: Hi Thomas. I would say postgres is better for this sort of thing. In postgres, you can write a function in plpgsql or other function language (there is also a python function language) that you install in postgres. In any case once you write it and then call it - it is executed in a single transaction. You are only left with selecting the function in your zsql from your script. I would prefer postgres too but it is decided to use MySQL in the project... It is hard to comment on the method you have sketched out not knowing what arguments you are passing into the method. You have identified path but I see others that you haven't discussed so don't really know where you plan on getting them from. Well path is actually the only argument passed to the method. select @lastval:=num is a (I think) MySQL specific way of assigning values to local variables. I could probably use a sub-select or something but my SQL is a bit rusty ;-) Regards, David On Wednesday, July 27, 2005, at 03:22 PM, Thomas Olsen wrote: Hi This is probably an FAQ but I haven't been able to find and answer. I need a counter for a certain CMFType and want to store the hits in a MySQL database not to fill up the ZODB. I've checked to two suggestions below but they both use two ZSQLMethods first to check if the URL is already in the table, then to do the actual update or insert. http://www.zope.org/Members/element/Simple_SQL_Page_Counter http://zopelabs.com/cookbook/991116439 I'd like to be able to do that just in one ZSQLMethod for efficiency but I cant seem to figure out a way of doing it. The table is very simple: CREATE TABLE mostread ( path varchar(255) NOT NULL default '', num bigint(20) NOT NULL default '0', dt datetime NOT NULL default '-00-00 00:00:00', PRIMARY KEY (path) ) For now my ZSQLMethod get the argument path which is a relative URL and it looks like this: select @lastval:=num from mostread where dtml-sqltest path type=string dtml-var sql_delimiter update mostread set [EMAIL PROTECTED], dt=now() where dtml-sqltest path type=string; /dtml-if But that naturally only works if there is already a record containing path. What I want to do is something like this (pseudo-code): select @lastval:=num from mostread where dtml-sqltest path type=string dtml-var sql_delimiter dtml-if sequence-length 0 update mostread set [EMAIL PROTECTED], dt=now() where dtml-sqltest path type=string; dtml-else insert into mostread(path, num, dt) values(dtml-sqlvar path type=string, 1, now()) /dtml-if Is there a way of doing this or should I just create that extra ZSQLMethod? -- Med venlig hilsen Thomas Olsen http://www.headnet.dk ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) -- Med venlig hilsen Thomas Olsen http://www.headnet.dk ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: ZSQLMethod conditional insert
Hi! Might something like this help? INSERT INTO table (a,b,c) VALUES (1,2,3) ON DUPLICATE KEY UPDATE c=c+1; So this will catch errors and instead do the update. Available from version 4.1.0 on as the docs say. See also the docs: http://dev.mysql.com/doc/mysql/en/insert.html -- christian PS: I might have misunderstood something ;-) Thomas Olsen wrote: Hi This is probably an FAQ but I haven't been able to find and answer. I need a counter for a certain CMFType and want to store the hits in a MySQL database not to fill up the ZODB. I've checked to two suggestions below but they both use two ZSQLMethods first to check if the URL is already in the table, then to do the actual update or insert. http://www.zope.org/Members/element/Simple_SQL_Page_Counter http://zopelabs.com/cookbook/991116439 I'd like to be able to do that just in one ZSQLMethod for efficiency but I cant seem to figure out a way of doing it. The table is very simple: CREATE TABLE mostread ( path varchar(255) NOT NULL default '', num bigint(20) NOT NULL default '0', dt datetime NOT NULL default '-00-00 00:00:00', PRIMARY KEY (path) ) For now my ZSQLMethod get the argument path which is a relative URL and it looks like this: select @lastval:=num from mostread where dtml-sqltest path type=string dtml-var sql_delimiter update mostread set [EMAIL PROTECTED], dt=now() where dtml-sqltest path type=string; /dtml-if But that naturally only works if there is already a record containing path. What I want to do is something like this (pseudo-code): select @lastval:=num from mostread where dtml-sqltest path type=string dtml-var sql_delimiter dtml-if sequence-length 0 update mostread set [EMAIL PROTECTED], dt=now() where dtml-sqltest path type=string; dtml-else insert into mostread(path, num, dt) values(dtml-sqlvar path type=string, 1, now()) /dtml-if Is there a way of doing this or should I just create that extra ZSQLMethod? ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZPsycopg - Losing Connections
Fernando: I have downloaded the source from http://initd.org/pub/software/psycopg/PSYCOPG-1-1/ and compiled it (in RH FC4 and RHEL3, tough) with no problams whatsoever. I am using Zope 2.7.5, Python 2.3.5, Psycopg sources 1.1.19 and PostgreSQL 8.0.3 The only advice would be to upgrade your postgresql to 8.0.3 since the version you are using is a bit outdated. Best regards. Felipe Barousse Boué Piensa Technologies - Bufete Consultor de Mexico www.piensa.com On Wed, 2005-07-27 at 12:00 -0400, [EMAIL PROTECTED] wrote: Message: 15 Date: Wed, 27 Jul 2005 13:45:52 +0100 From: Peter Bengtsson [EMAIL PROTECTED] Subject: Re: [Zope] ZPsycopg - Losing Connections To: Fernando Lujan [EMAIL PROTECTED] Cc: zope@zope.org Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=ISO-8859-1 On 7/27/05, Fernando Lujan [EMAIL PROTECTED] wrote: On 7/27/05, David [EMAIL PROTECTED] wrote: Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) The Psycopg version 1.1.19 solves this problem. :) The 1.1.19 version isn't in debian yet. $ apt-get show python-psycopg shows only 1.1.18 :( ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Re: ZSQLMethod conditional insert
On Thursday den 28. July 2005 00:23, Christian Scholz wrote: INSERT INTO table (a,b,c) VALUES (1,2,3) ON DUPLICATE KEY UPDATE c=c+1; Thanks - that was exactly what I needed -- Med venlig hilsen Thomas Olsen http://www.headnet.dk ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Zope 2.8 Installation trouble on XP
Just to chirp in, I just tried to install 2.8 on my dev box and I am receiving the same error (XP SP2) Previous versions of Zope that have been (and still are) installed: 2.7.3, 2.7.5, 2.7.6 ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Re: Zope 2.8 Installation trouble on XP
--On 28. Juli 2005 13:59:54 +1200 Chris Beaven [EMAIL PROTECTED] wrote: Just to chirp in, I just tried to install 2.8 on my dev box and I am receiving the same error (XP SP2) Could you please tell us *which error*? The people in charge for fixing such issues need some more useful information that the same error. -aj pgpWbfMcbjUKn.pgp Description: PGP signature ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Running more than one instance on windows often block each other
It's starting to look a lot like the Windows bind() implementation is
unreliable, sometimes (but rarely -- hard to provoke) allowing two
sockets to bind to the same (address, port) pair simultaneously,
instead of raising 'Address already in use' for one of them. Disaster
ensues.
WRT the last version of the code I posted, on another XP Pro SP2
machine (again after playing registry games to boost the number of
ephemeral ports) I eventually saw all of: hangs during accept(); the
assertion errors I mentioned last time; and mystery Connection
refused errors during connect().
The variant of the code below _only_ tries to use port 1. If it
can't bind to that on the first try, socktest111() raises an exception
instead of trying again (or trying a different port number). Ran two
processes. After about 15 minutes, both died with assert errors at
about the same time (identical, so far as I could tell by eyeball):
Process A:
Traceback (most recent call last):
File socktest.py, line 209, in ?
assert msg == msg2, (msg, msg2, r.getsockname(), w.getsockname())
AssertionError: ('292739', '821744', ('127.0.0.1', 1), ('127.0.0.1', 3845))
Process B:
Traceback (most recent call last):
File socktest.py, line 209, in ?
assert msg == msg2, (msg, msg2, r.getsockname(), w.getsockname())
AssertionError: ('821744', '292739', ('127.0.0.1', 1), ('127.0.0.1', 3846))
So it's again the business where each process is recv'ing the random
string intended to be recv'ed by a socket in the other process.
Hypothesized timeline:
process A's `a` binds to 1
process B's `a` binds to 1 -- according to me, this should be impossible
in the absence of SO_REUSEADDR (which acts very differently on
Windows than it does on Linux, BTW -- on Linux this should be impossible
even in the presence of SO_REUSEADDR; regardless, we're not using
SO_REUSEADDR here, and the braindead hard-coded
w.setsockopt(socket.IPPROTO_TCP, 1, 1)
is actually using the right magic constant for TCP_NODELAY on
Windows, as it intends).
A and B both listen()
A connect()s, and accidentally gets on B.a's accept queue
B connect()s, and accidentally gets on A.a's accept queue
the rest follows inexorably
Note that because this never tries a port number other than 1, it
can't be a bulletproof workaround simply to hold on to the `a` socket.
If the hypothesized timeline above is right, bind() can't be trusted
on Windows in any situation where two processes may try to bind to the
same hostname:port pair at the same time. Holding on to `a`, and
cycling through port numbers when bind() failed, would still
potentially leave two processes trying to bind to the same port number
simultaneously (just a port other than 1).
Ick: this happens under Pythons 2.3.5 (MSVC 6) and 2.4.1 (MSVC 7.1),
so if it is -- as is looking more and more likely --an error in MS's
socket implementation, it isn't avoided by switching to a newer MS C
library.
Frankly, I don't see a sane way to worm around this -- it's difficult
for application code to worm around what smells like a missing
critical section in system code.
Using the simpler socket dance from the ZODB 3.4 code, I haven't yet
seen an instance of the assert failure, or a hang. However, let two
processes run that long enough simultaneously, and it always (so far)
eventually fails with
socket.error: (10048, 'Address already in use')
in the w.connect() call, and despite that Windows picks the port numbers here!
While that also smells to heaven of a missing critical section in the
Windows socket implementation, an exception is much easier to live
with / worm around. Alas, we don't have the MS source code, and I
don't have time to try disassembling / reverse-engineering the opcodes
(what EULA wink?), so best I can do is run this for many more hours
to try to increase confidence that an exception is the worst that can
occur under the ZODB 3.4 spelling.
Here's full code for the only try port 1 version:
import socket, errno
import time, random
def socktest111():
Raise an exception if we can't get 1.
a = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
w = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
# set TCP_NODELAY to true to avoid buffering
w.setsockopt(socket.IPPROTO_TCP, 1, 1)
# tricky: get a pair of connected sockets
host = '127.0.0.1'
port = 1
try:
a.bind((host, port))
except:
raise RuntimeError
else:
print 'b',
a.listen (1)
w.setblocking (0)
try:
w.connect ((host, port))
except:
pass
print 'c',
r, addr = a.accept()
print 'a',
a.close()
print 'c',
w.setblocking (1)
return (r, w)
sofar = []
try:
while 1:
try:
stuff = socktest111()
except RuntimeError:
print 'x',
time.sleep(random.random()/10)
continue
sofar.append(stuff)
