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| zr | hello, I'd like to know how I can setup a security declaration for my BrowserView, so I can access self.context in my view method without raising a ForbiddenAttribute error | 14:35 |
|---|---|---|
| zr | I've browsed around but I have not yet found a document that explains this for my use case | 14:36 |
| mgedmin | zr, you don't want security declarations for the view, you want security declarations for the context object | 14:42 |
| mgedmin | self is never security proxied, so self.anything is always allowed | 14:42 |
| mgedmin | but a view's self.context is always security proxied, so self.context.anything till trigger a security check according to the declarations made for your context class | 14:43 |
| zr | mgedmin: thanks for clearing that up, so I would need a security declaration for the folderish object that is the context of the view? | 14:43 |
| mgedmin | yes | 14:43 |
| zr | hmmm | 14:44 |
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| zr | mgedmin: I've been reading the api docs but I'm having problems grokking the concept behind it. Could you provide an example on how to do this? | 15:06 |
| mgedmin | how to do what, exactly? | 15:11 |
| zr | mgedmin: nevermind, I'll just use zope.security.proxy.getObject for now | 15:20 |
| zr | thanks anyway | 15:20 |
| mgedmin | removeAllProxies() is idiomatic | 15:20 |
| zr | mgedmin: right, thanks | 15:21 |
| mgedmin | naked_context = zope.proxy.removeAllProxies(self.context) | 15:21 |
| mgedmin | although maybe zope.security.proxy.removeSecurityProxy(self.context) would be better | 15:22 |
| mgedmin | oh, hey, it's actually an alias for getObject, but with a more descriptive name | 15:22 |
| zr | mgedmin: hehe | 15:22 |
| zr | mgedmin: do you know where I could introspect the paste httpserver threads? this information should be stored in the environ object of a wsgi application | 15:23 |
| zr | my hope is that, by acquiring a handle on the context, I could traverse to it | 15:23 |
| mgedmin | I'm confused by your question | 15:24 |
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| zr | basically I want to introspect the threads created by paste | 15:25 |
| mgedmin | the wsgi_env['paste.httpserver.thread_pool'] is a dictionary from thread_id to a tuple (time_started, request_info) | 15:26 |
| mgedmin | request_info is either None or a wsgi dictionary of the request that that thread is currently handling | 15:27 |
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| mgedmin | does that help? | 15:27 |
| zr | nice, I can then use threadframe to get a list of threads | 15:27 |
| mgedmin | threading.enumerate() | 15:28 |
| mgedmin | what | 15:28 |
| mgedmin | err, what's threadframe? | 15:28 |
| zr | threadframe is a third party library | 15:28 |
| zr | but I never tried threading.enumerate | 15:28 |
| mgedmin | heh, threadframe's page says "Note: threadframe is obsolete. Python 2.5 and later include a function sys._current_frames() that does the same thing. Threadframe is only useful for Python 2.2 through 2.4." | 15:29 |
| zr | mgeadmin: err... | 15:29 |
| mgedmin | sys._current_frames() is awesome | 15:29 |
| zr | mgedmin: thanks for the pointers | 15:30 |
| mgedmin | I built a web page that shows me the current status of all my threads, including their stack traces and a list of the last N logging messages recorded in each thread | 15:30 |
| mgedmin | it was already helpful chasing down deadlocks when I tried to use storm/postgresql and ZEO in the same app | 15:30 |
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| zr | mgedmin: very cool! | 15:31 |
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| zr | 9 | 15:35 |
| zr | but then again, how do I get a handle on wsgi_env? | 15:40 |
| mgedmin | if you've a zope request handy, it's request.environ | 15:41 |
| mgedmin | sorry | 15:41 |
| mgedmin | request._environ | 15:42 |
| mgedmin | this assumes that you're deploying zope through wsgi | 15:42 |
| mgedmin | which you are, if you're using paste.httpserver :) | 15:42 |
| zr | aargh | 15:42 |
| zr | I never needed to get the context... | 15:42 |
| zr | all I needed was self.request._environ | 15:43 |
| zr | I thought I had checked self.request thorougly using pdb | 15:44 |
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| zr | mgedmin: thanks again for your help | 15:58 |
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| benbangert | J1m: welp, gonna go pure Python in kazoo | 23:04 |
| benbangert | no more C binding or C lib | 23:04 |
| J1m | why? | 23:05 |
| benbangert | we spent over a week debugging a a bug in the Python C binding | 23:06 |
| benbangert | having to track bugs through two layers of C is horrible | 23:06 |
| benbangert | the C binding wasn't using the right password copy function, so if the server generated a byte password with a \0 character, the Python one got truncated | 23:06 |
| benbangert | and after looking through it some more, there's still remaining seg-fault bugs in the C binding and/or C lib itself | 23:07 |
| benbangert | it seems untenable to maintain a Zookeeper library unless you want to maintain/fix bugs in both the C binding and C lib | 23:07 |
| J1m | so you're going to write against the network protocol directly. Sounds like fun. ;) | 23:07 |
| J1m | yeah, which sucks. | 23:07 |
| benbangert | its actually already done for the most part, https://github.com/maguro/pookeeper | 23:08 |
| benbangert | and its a super simple protocol, and implements new ZK 3.4 features as well | 23:08 |
| J1m | Can't say I like that name. | 23:08 |
| benbangert | I need to yank it in, it has some inefficiencies due to generated code | 23:08 |
| benbangert | yea, I'm going to extract the bits and have it integrated inside kazoo | 23:08 |
| benbangert | which is needed anyways to use the IHandler API for gevent compat | 23:08 |
| benbangert | but the network protocol is simple, I can read all the Python code for it in 10 mins | 23:09 |
| benbangert | I can't read half the C binding in 10 mins | 23:09 |
| benbangert | and the C lib.... ergh | 23:09 |
| J1m | wow. | 23:09 |
| J1m | I didn't realize the network protocol was that simple. | 23:09 |
| J1m | cool. | 23:09 |
| benbangert | yea, its a breeze | 23:09 |
| benbangert | so kazoo gets to dump a bunch of the hacks to deal with the C lib thread | 23:10 |
| benbangert | and other edge case hacks that were due to the C lib | 23:10 |
| J1m | very nice. | 23:10 |
| benbangert | and there's the 3.4 read-only feature which might be handy for you | 23:10 |
| J1m | and zc-zookeeper-static can die! | 23:10 |
| benbangert | in a partition event, you can remain connected and go into read-only mode | 23:10 |
| J1m | cool (I assumed that how it worked already :) | 23:11 |
| benbangert | nah, in a partition event, you'll get dropped | 23:11 |
| benbangert | and Zookeeper will only let you connect if its part of a consensus | 23:11 |
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