public DataSource getSiddhiDataSource(String dataSourceName) {
        if (dataSourceName != null) {
            return siddhiDataSources.get(dataSourceName);
        }
        return null;
    }
Context information holder associated with {@link SiddhiManager}
modules/siddhi-core/src/main/java/io/siddhi/core/config/SiddhiContext.java