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MySQL/SQLite logging plugin for ZNC IRC bouncer written in Python 3

• Supports MySQL, PostgreSQL and SQLite databases.
• Asynchronous database writes on separate thread. Guarantees that ZNC won't hang during SQL connection timeout.
• Automatic table creation (CREATE TABLE IF NOT EXIST)
• Retry after failed inserts. When database server is offline, logs are buffered to memory. They are saved when database is back online, so you won't lose logs during MySQL/PostgreSQL outages.

After having this plugin enabled for around 11 months, below are my statistics of MySQL table:

• Total logs count: more than 4.87 million.
• Space usage: 386 MB (data 270 MB, index 116 MB)

MySQL gives great compression ratio and is easily searchable. SQLite database doesn't support compression, but it's easier to setup and migrate.

1. Copyzlog_sql.py to~/.znc/modules/zlog_sql.py.
2. In Webadmin, open the list of Global Modules.
3. Make suremodpython is enabled.
4. Enable modulezlog_sql and set its argument.

For MySQL, set module argument matching following format:

mysql://username:password@localhost/database_name

Important: you needPyMySQL pip package for MySQL logging. Install it withpip3 install PyMySQL command.

For PostgreSQL, set module argument matching following format:

postgres://username:password@localhost/database_name

Important: you needpsycopg2 pip package for PostgreSQL logging. Install it withpip3 install psycopg2 command.

For SQLite use following string format:

sqlite:///home/user/logs.sqlite

or simply leave out the path

sqlite

in this case, logs are going to be written to the default path~/.znc/moddata/zlog_sql/logs.sqlite.

5. Save changes. SQL table schema is going to be created automatically.