Django simple SQL log
Goal: provide a middleware that inserts start/stop annotations that would land on the SQL logs.
2014-12-08 09:33:58 CET LOG: duration: 0.174 ms statement: BEGIN 2014-12-08 09:33:58 CET LOG: duration: 0.502 ms statement: SET TIME ZONE 'UTC' 2014-12-08 09:33:58 CET LOG: duration: 0.053 ms statement: COMMIT 2014-12-08 09:33:58 CET LOG: duration: 0.228 ms statement: SHOW default_transaction_isolation 2014-12-08 09:33:58 CET LOG: duration: 0.043 ms statement: BEGIN 2014-12-08 09:33:58 CET LOG: duration: 0.354 ms statement: SELECT 'django_sql_log_demo.views.Index_START' 2014-12-08 09:33:58 CET LOG: duration: 1.221 ms statement: SELECT "dummy_article"."id", "dummy_article"."title", "dummy_article"."body" FROM "dummy_article" 2014-12-08 09:33:58 CET LOG: duration: 0.118 ms statement: SELECT 'django_sql_log_demo.views.Index_STOP' 2014-12-08 09:33:58 CET LOG: duration: 0.067 ms statement: ROLLBACK 2014-12-08 09:33:59 CET LOG: duration: 0.179 ms statement: BEGIN 2014-12-08 09:33:59 CET LOG: duration: 0.513 ms statement: SET TIME ZONE 'UTC' 2014-12-08 09:33:59 CET LOG: duration: 0.054 ms statement: COMMIT 2014-12-08 09:33:59 CET LOG: duration: 0.231 ms statement: SHOW default_transaction_isolation 2014-12-08 09:34:00 CET LOG: duration: 117.999 ms statement: DROP DATABASE "test_hello_world"
The available middleware has been tested only with Postgresql databases, but it should work with other SQL-based RDBMs.
Add this package to your requirements, and install it the usual way. You
don't have to add the application to the
INSTALLED_APPS, there's no
model to sync.
Add the middleware like this:
MIDDLEWARE_CLASSES = ( 'django_sql_log.middleware.SQLLoggingMiddleware', # ... )
Although the order of the middlewares is not crucial, it is better to make sure that the middleware is near the first place in the list.
Log format string
By default, the log format string is:
In the demo site, this would result in:
for the START event in the log.
You can customize this format by adding the
your settings. Available format variables are (with correspondance in
the demo tests):
phase: START or STOP,
If you want to run the test-suite, have a look at the
It carries the basic database settings you'll need to run tox tests and
eventually store demo data. Hopefully, by simply creating a
settings_pg_local.py file, you can override the default credentials to fit
your Postgresql server specifics.
Please bear in mind that the database you'll have to connect to must exist on this server, and that your PG user should be able to create and delete databases.
tox installed, simply run the command
tox. This should run
the tests for Sqlite and postgresql environments, if ready.
Logging in Postgresql
For you information, logs are not activated by default in postgresql settings.
To make sure your log file will display the START/STOP events, go edit
postgresql.conf file and set this variable:
log_min_duration_statement = 0
For other database systems, please refer to the official documentation.
This software is published under the terms of the MIT License. Please
LICENSE file for more information.