public void persist() {
try {
Multimap<AttributeName, AttributeValue<?>> values = attributesManager.takeAllAttributeValues(lastTimestamp.getAndSet(Timestamp.now()), AttributesManager.DEFAULT_ATTR_GROUP);
AttributeValuesView view = new AttributeValuesView(values);
Files.write(output, Arrays.asList(view.toStringArray()), Charset.forName("UTF-8"), StandardOpenOption.CREATE, StandardOpenOption.APPEND);
} catch (IOException e) {
LOG.error("Unable to store data file.", e);
}
}
}