looking.py

def validate_database_relationship():                                                                
    #Connect to the sentrys and fetch the transmitted details                                        
    sent_config = d.sentry.unit['mysql/0'].relation('db', 'owncloud:db')                             
    #Connect to owncloud's sentry and read the configuration PHP file
    prod_config = d.sentry.unit['owncloud/0'].file_contents('/var/www/owncloud/config/config.php')
    cfg_to_check = {'dbuser': 'user', 'dbpass': 'password', 'dbhost': 'host'}

    for cfg_file_key, juju_cfg_key in cfg_to_check.items():
        #Search the return string of the config for the transmit values
        if prod_config.find("'%s' => '%s'" % (cfg_file_key, sent_config[juju_cfg_key]) == -1:
            amulet.raise_status(amulet.SKIP, msg="Unable to validate db sent %s" % juju_cfg_key)