Using Gatling to loop through line by line in a file and send one message at a time to Kafka -

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i have file contains text this

{"content_type":"twitter","id":"77f985b0-a30a-11e5-8791-80000bc51f65","source_id":"676656486307639298","date":"2015-12-15t06:54:12.000z","text":"rt @kokodeikku_bot: ?????: ??,} {"content_type":"twitter","id":"7837a020-a30a-11e5-8791-80000bc51f65","source_id":"676656494700568576",} {"content_type":"twitter","id":"7838d8a0-a30a-11e5-8791-80000bc51f65","source_id":"676656507266703360",}

i'm unable read each line @ time string kafka topic within scenario, since can't iterate on scenario in gatling.

here code

class kafkasimulation extends simulation {     val line = source.fromfile(<passing locn of file>)("utf-8").getlines.mkstring("\n") // 1 way reading source file     val br = new bufferedreader(new filereader("<passing locn of file>"))    var line:string = ""     while ({ line = br.readline() ; line != null } ) {        //in while loop can print line line cant use while loop within scenario below           println(listoflines.mkstring("\n"))               }    val kafkaconf = kafka      // kafka topic name     .topic("test")     // kafka producer configs     .properties(       map(         producerconfig.acks_config -> "1",         // list of kafka broker hostname , port pairs           producerconfig.bootstrap_servers_config -> "localhost:9092",        // required since apache kafka 0.8.2.0         producerconfig.key_serializer_class_config ->           "org.apache.kafka.common.serialization.bytearrayserializer",         producerconfig.value_serializer_class_config ->           "org.apache.kafka.common.serialization.bytearrayserializer"))       val scn = scenario("kafka test")     .exec(kafka("request")         // message send         .send(line.tostring())) //here if put line.tostring(), doesnt read line line instead post entire 3 lines 1 message    setup(       scn.inject(constantuserspersec(10) during (1 seconds)))      .protocols(kafkaconf)  }

any tips how can iterate on file , read line line in scenario?

turn file 1 column csv feeder , use standard gatling way: feed record, send request, , repeat as want.


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