2.5.19. DbConfig

DbConfig is a utility for master.cfg to get easy-to-use key-value storage in the Buildbot database.

DbConfig can get and store any json-able object to the db for use by other masters or separate UI plugins to edit them.

The design is intentionally simplistic, as the focus is on ease of use rather than efficiency. A separate db connection is created each time get() or set() is called.

Example:

from buildbot.plugins import util, worker

c = BuildmasterConfig = {}
c['db_url'] = 'mysql://username:password@mysqlserver/buildbot'
dbConfig = util.DbConfig(BuildmasterConfig, basedir)
workers = dbConfig.get("workers")
c['workers'] = [
    worker.Worker(worker['name'], worker['passwd'],
                  properties=worker.get('properties')),
    for worker in workers
]

class DbConfig

__init__(BuildmasterConfig, basedir)

Parameters:

BuildmasterConfig – the BuildmasterConfig, where db_url is already configured
basedir – basedir global variable of the master.cfg run environment. SQLite urls are relative to this dir

get(name, default=MarkerClass)

Parameters:

name – the name of the config variable to retrieve
default – in case the config variable has not been set yet, default is returned if defined, else KeyError is raised

set(name, value)

Parameters:

name – the name of the config variable to be set
value – the value of the config variable to be set