Write the points to the ES server.

def export(self, name, columns, points):
        """Write the points to the ES server."""
        logger.debug("Export {} stats to ElasticSearch".format(name))

        # Create DB input
        # https://elasticsearch-py.readthedocs.io/en/master/helpers.html
        actions = []
        for c, p in zip(columns, points):
            dtnow = datetime.utcnow()
            action = {
                "_index": self.index,
                "_id": '{}.{}'.format(name,c),
                "_type": "glances",
                "_source": {
                    "plugin": name,
                    "metric": c,
                    "value": str(p),
                    "timestamp": dtnow.isoformat('T')
                }
            }
            logger.debug("Exporting the following object to elasticsearch: {}".format(action))
            actions.append(action)

        # Write input to the ES index
        try:
            helpers.bulk(self.client, actions)
        except Exception as e:
            logger.error("Cannot export {} stats to ElasticSearch ({})".format(name, e))