public String getRequiredConfigAttributeWithDefaultValueAndConfigId ( Map < String , Object > props , String key , String defaultValue , String configId ) { String result = getAndTrimConfigAttribute ( props , key ) ; if ( key != null && result == null ) { if ( defaultValue != null ) { result = defaultValue ; } else { logMessageForMissingRequiredAttribute ( key , configId ) ; } } return result ; }
Returns the value for the configuration attribute matching the key provided . If the value does not exist or is empty the provided default value will be returned . If the default value is also null an error message will be logged .