MobileRead Forums - View Single Post - Can I access the database from a metadata source plugin?

kovidgoyal · 02-02-2015, 10:38 PM

Yes, in the identify() method it wont work, since that is run in a worker process. Because of your previous questions, I somewhat sloppily assumed you meant the url_from_identifier() method.

You can just directly read for the database, with something like this,

Code:

import apsw
conn = apsw.Connection('/path/to/calibre/metadata.db', apsw.SQLITE_OPEN_READONLY)

apsw is multi-process/thread safe so it should be fine.

02-02-2015, 10:38 PM	#6
kovidgoyal creator of calibre Posts: 45,440 Karma: 27757438 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Yes, in the identify() method it wont work, since that is run in a worker process. Because of your previous questions, I somewhat sloppily assumed you meant the url_from_identifier() method. You can just directly read for the database, with something like this, Code: import apsw conn = apsw.Connection('/path/to/calibre/metadata.db', apsw.SQLITE_OPEN_READONLY) apsw is multi-process/thread safe so it should be fine.