Re: [Zope] ZSQL with different user
Alle 18:42, lunedì 19 dicembre 2005, hai scritto: Pier Luigi Fiorini wrote: Hello, I'm developing a Zope application that uses a PostgreSQL connection and several ZSQL objects. People should log in using a Postgres user and ZSQL object should be executed by the user that's logged in. Multiple people can be logged at the same time. Unfortunately it is not possible because the same Postgres connection is used by all the ZSQL object. Is there a way to change the user executing a ZSQL query? An alternative would be to log into the event.log some information (like the username, that's stored in the session) and the query source. Your alternative is dead easy. zLOG (or, better, the Python logging module, for which zLOG is now a facade) is quite easy to use. You can even make your own log file to contain only such events. I know _how_ to use zLOG. I just don't know how to log the query source. Is there some documentation about these things. I can find only documentation about making things like a simple form which is not so useful because you can learn it in some days. -- YACME S.r.l. Via del Mobiliere, 9 40138 Bologna Tel: +39 051 538709 Fax: +39 051 532399 [EMAIL PROTECTED] www.yacme.com pgp3kODOcvUzE.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] ZSQL with different user
Pier Luigi Fiorini wrote: Alle 18:42, lunedì 19 dicembre 2005, hai scritto: Pier Luigi Fiorini wrote: Hello, I'm developing a Zope application that uses a PostgreSQL connection and several ZSQL objects. People should log in using a Postgres user and ZSQL object should be executed by the user that's logged in. Multiple people can be logged at the same time. Unfortunately it is not possible because the same Postgres connection is used by all the ZSQL object. Is there a way to change the user executing a ZSQL query? An alternative would be to log into the event.log some information (like the username, that's stored in the session) and the query source. Your alternative is dead easy. zLOG (or, better, the Python logging module, for which zLOG is now a facade) is quite easy to use. You can even make your own log file to contain only such events. I know _how_ to use zLOG. I just don't know how to log the query source. Is there some documentation about these things. I can find only documentation about making things like a simple form which is not so useful because you can learn it in some days. That depends. What do you mean by query source? --jcc -- Building Websites with Plone http://plonebook.packtpub.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] ZSQL with different user
Hello, I'm developing a Zope application that uses a PostgreSQL connection and several ZSQL objects. People should log in using a Postgres user and ZSQL object should be executed by the user that's logged in. Multiple people can be logged at the same time. Unfortunately it is not possible because the same Postgres connection is used by all the ZSQL object. Is there a way to change the user executing a ZSQL query? An alternative would be to log into the event.log some information (like the username, that's stored in the session) and the query source. Can you point me to some information? Thanks ___ 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] ZSQL with different user
Pier Luigi Fiorini schrieb: Hello, I'm developing a Zope application that uses a PostgreSQL connection and several ZSQL objects. People should log in using a Postgres user and ZSQL object should be executed by the user that's logged in. Multiple people can be logged at the same time. Unfortunately it is not possible because the same Postgres connection is used by all the ZSQL object. Is there a way to change the user executing a ZSQL query? Well good news and bad news... Good news first: yes it can be done Bad news: you would have to code it ;) You could base on the database adapter you currently have but organize your connection pool on a per user basis - so you need a connection with a user-folder as well (Interesting if you could subclass Userfolder and PsycopgDA...) so when a user logs in you look in the connection pool and/or authorize the user and use an idle/new connection for this user when ZSQL methods are called. Interesting project but not so easy. Also in worst case you could end up having zope-threads X users connection to your database. And connection setup is somewhat expensive, so if your pool is too small performance will suffer. Regards Tino ___ 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] ZSQL with different user
On Mon, Dec 19, 2005 at 03:39:51PM +0100, Tino Wildenhain wrote: Pier Luigi Fiorini schrieb: Hello, I'm developing a Zope application that uses a PostgreSQL connection and several ZSQL objects. People should log in using a Postgres user and ZSQL object should be executed by the user that's logged in. Multiple people can be logged at the same time. Unfortunately it is not possible because the same Postgres connection is used by all the ZSQL object. Is there a way to change the user executing a ZSQL query? Well good news and bad news... Good news first: yes it can be done Bad news: you would have to code it ;) You could base on the database adapter you currently have but organize your connection pool on a per user basis - so you need a connection with a user-folder as well (Interesting if you could subclass Userfolder and PsycopgDA...) so when a user logs in you look in the connection pool and/or authorize the user and use an idle/new connection for this user when ZSQL methods are called. Interesting project but not so easy. Also in worst case you could end up having zope-threads X users connection to your database. And connection setup is somewhat expensive, so if your pool is too small performance will suffer. The postgresql commandline tool psql has a command /user to change the details of the current connection. Wouldn't it be easier to use a command like that at the beginning of each database request? (I think that would still need some hacking in Userfolder and/or PsycopgDA, or even in Psyco itself...) -- __ Nothing is as subjective as reality Reinoud van Leeuwen[EMAIL PROTECTED] http://www.xs4all.nl/~reinoud __ ___ 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] ZSQL with different user
--On 19. Dezember 2005 15:32:46 +0100 Pier Luigi Fiorini [EMAIL PROTECTED] wrote: Hello, I'm developing a Zope application that uses a PostgreSQL connection and several ZSQL objects. People should log in using a Postgres user and ZSQL object should be executed by the user that's logged in. Multiple people can be logged at the same time. Unfortunately it is not possible because the same Postgres connection is used by all the ZSQL object. Is there a way to change the user executing a ZSQL query? The short version: forget it. DA connections are tied to a particular user. Connections are persistent and shared across threads and requests. You really don't want to connect/re-connect for every request and user. You would have to implement your own connection management including connection pooling *somehow*. -aj pgpQhnV4SPuHW.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] ZSQL with different user
Am Montag, den 19.12.2005, 15:43 +0100 schrieb Reinoud van Leeuwen: The postgresql commandline tool psql has a command /user to change the details of the current connection. Wouldn't it be easier to use a command like that at the beginning of each database request? Well this \connect command really reconnecting. There is SET SESSION AUTHORIZATION but I'm not sure if it really helps. Regards Tino Wildenhain ___ 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 )
