Opened 14 years ago

Closed 14 years ago

Last modified 11 years ago

#7262 closed defect (fixed)

db.close() should not be used in trac 0.12

Reported by: ejucovy Owned by: Jeff Hammel
Priority: normal Component: TracSqlHelperScript
Severity: normal Keywords:
Cc: Trac Release: 0.12

Description (last modified by Ryan J Ollos)

Don't close the db connection after each SQL command is executed. In Trac 0.12 this causes subsequent db queries to have no connection, causing AttributeErrors.


  • tracsqlhelper/

    2929Exception:%s""" %(sql, params, e))
    3030            db.rollback()
    3131            raise
    32         try:
    33             db.close()
    34         except:
    35             pass
     32        #try:
     33        #    db.close()
     34        #except:
     35        #    pass
    3636        return self.return_values(**_data)

AFAICT this is a band-aid over a bigger issue. SQLHelperScript does not distinguish between commands that write to the db and commands that only read from it -- all commands will commit and roll-back the database. It also tries to manage its own database connections (get_db_cnx and the now-commented-out db.close()). And in fact it seems like as of Trac 0.12 it should not be trying to manage its own transactions either, or if it does it should be using the with_transaction decorator. But my hunch is that none of this should be managed at the level of the individual SQL command objects, rather by their callers.

Regardless this small change seems to fix the immediate issue, comment:4:ticket:7182-- though I don't know if it will cause additional problems.

Attachments (1)

connection.diff (724 bytes) - added by ejucovy 14 years ago.
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Change History (8)

comment:1 Changed 14 years ago by ejucovy

I can branch sqlhelperscript for 0.12-compat and commit this patch if you give me access -- I don't seem to have write access on this plugin at trac-hacks. Thanks!

Changed 14 years ago by ejucovy

Attachment: connection.diff added

Attaching patch

comment:2 Changed 14 years ago by anonymous

Resolution: fixed
Status: newclosed

branched for 0.12 compatibility and committed patch on that branch - r8157, r8158, r8159


comment:3 Changed 11 years ago by Ryan J Ollos

(In [12978]) Refs #7262: Renamed anyrelease directory to 0.11.

comment:4 Changed 11 years ago by Ryan J Ollos

Description: modified (diff)

I'm not sure that [12978] was a good idea, but on the other hand, I don't think it's a good idea to retain a directory named anyrelease, when it no longer works with any release. I've tested that the TracHoursPlugin installs correctly in Trac 0.11 from trachoursplugin/branches/0.11, and I'll do the same for other plugins that utilize the TracSqlHelperScript, after changing their setup script to point to 0.11 rather than anyrelease.

comment:5 Changed 11 years ago by Ryan J Ollos

(In [12983]) Refs #7262: Bump version of 0.12 branch, so that it differs from the 0.11 branch following [8159].

comment:6 Changed 11 years ago by Ryan J Ollos

The setup.pys for the following projects point to tracsqlhelperscript/anyrelease, and will need to be modified to point to tracsqlhelperscript/0.11:

comment:7 Changed 11 years ago by Ryan J Ollos

(In [12984]) Refs #7262: Point setup,py link to TracSqlHelperScript 0.11 directory rather than anyrelease directory.

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