Druid segments ingestion

Is it possible to ingest druid segments directly into the druid? I don’t want to change something into the druid metadata tables manually. rather I would prefer something like an API call.

I also tried to see options from http://druid.io/docs/latest/ingestion/firehose.html and would like to know more about this option.

I mean what extra service I should be running to make this API call, whether i should make this API call to overlord? (if not which node this API call should be going to?)

{

“type” : “ingestSegment”,

“dataSource” : “wikipedia”,

“interval” : “2013-01-01/2013-01-02”

}

Look at delta ingestion: http://druid.io/docs/0.9.2/ingestion/batch-ingestion.html